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1.
Rev. Odontol. Araçatuba (Impr.) ; 42(1): 38-43, jan.-abr. 2021. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1252861

ABSTRACT

Existem técnicas amplamente utilizadas na atualidade e diversos tipos de substâncias clareadoras em diferentes formas de apresentação que podem implicar no procedimento quando se é executado podendo trazer benefícios e/ou malefícios. O objetivo deste estudo foi realizar uma revisão integrativa da literatura acercar dos benefícios e/ou malefícios existente durante o processo de clareamento dental, nas bases de dados Lilacs e Pubmed, utilizando os descritores "Clareamento Dental"; "Odontologia baseada em evidências" e "Estética Dentária". Os critérios de inclusão foram artigos completos, nas línguas inglesa e portuguesa, indexados no período de 2010 a 2020. Após os artigos serem filtrados, 5.929 foram encontrados, e a partir destes, 9 artigos apresentaram informações que estavam relacionados com a temática a ser proposta. A partir da analise ficou explicito que a realização de um procedimento consciente de todas as etapas, com conhecimento da técnica e indicação é necessária para que se tenha sucesso(AU)


There are techniques used today and several types of whitening substances in different forms of presentation that may involve the procedure when it is possible to bring benefits and / or harms. The aim of this study was to carry out an integrative literature review about the benefits and / or harms that exist during the tooth whitening process, in the Lilacs and Pubmed databases, using the descriptors "Dental Whitening"; "Evidence-based dentistry" and "Dental Aesthetics". The inclusion criteria were complete articles, in English and Portuguese, indexed in the period from 2010 to 2020. After the articles were filtered, 5,929 were found, and from these, 9 articles presented information that was related to the theme to be proposed. From the analysis it was made explicit that the performance of a conscious procedure of all stages, with knowledge of the technique and indication is necessary for success(AU)


Subject(s)
Tooth Bleaching , Esthetics, Dental , Tooth Bleaching/methods
2.
Medisan ; 25(2)mar.-abr. 2021. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1250339

ABSTRACT

Introducción: La discromía dental es una afectación estética, de causa multifactorial, caracterizada por el cambio de coloración de uno o varios dientes. Objetivo: Evaluar la efectividad de la terapia láser como fuente de luz y calor en pacientes con discromías dentales. Método: Se realizó un estudio cuasi experimental, de intervención terapéutica, en 24 pacientes con discromías dentales atendidos en la Clínica Estomatológica Provincial DocenteMártires del Moncada de Santiago de Cuba, desde julio de 2017 hasta julio de 2018. Los integrantes del estudio se asignaron de forma aleatoria a 2 grupos de tratamiento:a los pares (grupo de estudio) se les aplicó láser combinado con la técnica convencional de peróxido de hidrógeno;a los impares (grupo control), tratamiento convencional solamente.Se utilizaron las frecuencias absoluta y relativa como medidas de resumen, así como la prueba de X 2 de homogeneidad para la validación estadística, con un nivel de significación de 0,05. Resultados: Para los pacientes del grupo de estudio, la segunda y tercera sesiones fueron más efectivas. Al culminar el tratamiento, ambos resultaron efectivos, pero los que recibieron láser evolucionaron más rápidamente que los tratados solo con peróxido de hidrógeno. Conclusiones: El uso de la terapia láser y peróxido de hidrógeno fue efectivo en pacientes con discromías dentales y demostró que no provoca efectos adversos en los dientes tratados.


Introduction: The dental dischromya is an esthetic disorder, of multifactorial cause, characterized by the change of coloration of one or several teeth. Objective: To evaluate the effectiveness of laser therapy as a source of light and heat in patients with dental dischromya. Method: A quasi-experiment, of therapeutic intervention study, was carried out in 24 patients with dental dischromya assisted in Mártires del Moncada Teaching Provincial Stomatological Clinic in Santiago de Cuba, from July, 2017 to March, 2018. The members of the study were assigned at random with 2 treatment groups: a study group (pairs) to whom laser combined with the conventional technique of peroxide of hydrogen was applied; to odd number patients (control group), conventional treatment only. The absolute and relative frequencies were used as summary measures, as well as the chi-square test of homogeneity for the statistical validation, with a level of significance of 0.05. Results: For the patients of the study group, the second and third sessions were more effective. When culminating the treatment, both were effective, but those that received laser evolved more quickly than those treated with peroxide of hydrogen. Conclusions: The use of the laser therapy and peroxide of hydrogen was effective in patients with dental dischromya and it was demonstrated that doesn't cause adverse effects in the treated teeth.


Subject(s)
Tooth Discoloration/therapy , Laser Therapy , Tooth Bleaching/methods , Hydrogen Peroxide/therapeutic use
3.
Odontoestomatol ; 23(37): e402, 2021. graf
Article in Spanish | LILACS | ID: biblio-1250425

ABSTRACT

Resumen Introducción: El oscurecimiento de un diente anterior interfiere negativamente en el aspecto de la sonrisa, y varias son las causas que pueden ser responsables por este oscurecimiento. Objetivo: Describir las técnicas de blanqueamiento mixto e inmediato a través del reporte de dos casos clínicos. Caso 1: Individuo de sexo masculino, con Síndrome de Treacher Collins, se quejó sobre alteración cromática del diente 33, verificada mediante examen clínico, radiográficamente presencia de tratamiento endodóntico satisfactorio. Por lo que fue planeado el blanqueamiento interno mediante técnica mixta. Caso 2: Individuo de sexo masculino, con Síndrome de Apert reportó cambio cromático en el diente 22, observado en el examen clínico, radiográficamente presentando tratamiento endodóntico insatisfactorio. Se realizó retratamiento endodóntico y a los 6 meses se realizó blanqueamiento interno mediante técnica inmediata. Conclusión: El blanqueamiento dental ejecutado con las técnicas mixtas e inmediatas, devuelve la armonía de la sonrisa, recuperando el color ideal y elevando la autoestima a los pacientes.


Resumo Introdução: O escurecimento de um dente anterior interfere negativamente na aparência do sorriso, e várias são as causas que podem ser responsáveis por esse escurecimento. Objetivo: Descrever as técnicas clareadoras mista e imediata através do relato de dois casos clínicos. Caso 1: Indivíduo do gênero masculino com Síndrome de Treacher Collins, queixou-se de alteração cromática no dente 33, constatado no exame clínico, radiograficamente apresentando tratamento endodôntico satisfatório. O clareamento interno foi planejado e realizado pela técnica mista. Caso 2: Indivíduo do gênero masculino, com Síndrome de Apert, relatou alteração cromática no dente 22, constatado ao exame clínico, apresentando tratamento endodôntico insatisfatório. Foi realizada a reintervenção endodôntica e após 6 meses, foi realizado clareamento interno pela técnica imediata. Conclusão: O uso das técnicas clareadoras mista e imediata, resulta na devolução da harmonia do sorriso, recuperando a coloração ideal e devolvendo a autoestima aos pacientes.


Abstract Introduction: The darkening of a single anterior tooth negatively affects the smile's appearance, and several factors may cause this darkening. Objective: To describe the mixed and immediate bleaching techniques by reporting two clinical cases. Case 1: A male individual with Treacher Collins Syndrome. He complained of chromatic alteration in tooth 33, which was verified on clinical examination. X-ray imaging showed satisfactory endodontic treatment. Internal bleaching was performed with the mixed technique. Case 2: A male individual with Apert Syndrome reported chromatic alteration in tooth 22, observed on clinical examination. X-ray imaging showed unsatisfactory endodontic treatment. Endodontic retreatment was performed. Six months later, internal whitening was performed immediately. Conclusion: The use of mixed and immediate whitening techniques restores the smile's harmony, the tooth's ideal color, and patients' self-esteem.


Subject(s)
Tooth Bleaching/methods , Tooth, Nonvital , Tooth Bleaching Agents
4.
Rev. cuba. med. mil ; 49(4): e640, tab
Article in Spanish | LILACS, CUMED | ID: biblio-1156500

ABSTRACT

Introducción: La odontología conservadora ha afrontado un problema conocido como discromía, la cual ocurre cuando el diente sufre un cambio de color. No es grave en cuanto a la repercusión para la salud, pero es una condición desagradable que afecta la estética del paciente y su estado psíquico. Algunos estudios evidencian un aumento en cuanto a la discromía dental, como motivo de consulta de los pacientes, quienes en ocasiones solicitan la avulsión dentaria. Objetivo: Describir las características clínicas y epidemiológicas de pacientes con discromía. Método: Se realizó una investigación observacional, descriptiva transversal, en pacientes que acudieron a consulta en la clínica estomatológica docente del Hospital Militar Central Dr. Carlos J. Finlay, en el período comprendido entre febrero de 2016 a octubre de 2019, con un universo de 349 pacientes. Resultados: Los pacientes menos afectados fueron los menores de 19 años con un 4,3 por ciento, el sexo masculino representó un 65,9 por ciento. Predominaron las tinciones por bacterias cromógenas tanto para el sexo masculino como el femenino, con un 27,3 por ciento y 15,9 por ciento respectivamente, el grupo de edad de 35-59 años fue el más afectado con un 44,1 por ciento; las tinciones por descomposición aparecieron en el 48,4 por ciento de los pacientes. Conclusiones: Los pacientes más afectados por discromía dental fueron del sexo masculino, del rango de edad entre 35-59 años y causas extrínsecas(AU)


Introduction: Conservative dentistry has faced a problem known as dyschromia, which occurs when the tooth undergoes a color change. It is not serious in terms of consequences for health, but it is an unpleasant condition that affects the aesthetics of the patient and her psychic state. Some studies show an increase in terms of dental dyschromia, as a reason for consulting patients, who sometimes request dental avulsion. Objective: To describe the clinical and epidemiological characteristics of patients with dyschromia. Method: An observational, descriptive cross-sectional investigation was carried out in patients who came to the clinic at the teaching dental clinic of the Central Military Hospital Dr. Carlos J. Finlay, in the period from February 2016 to October 2019, with a universe of 349 patients. Results: The least affected patients were under 19 years old with 4.3 percent, the male sex represented 65.9 percent. Staining by chromogenic bacteria predominated for both the male and female sex, with 27.3 percent and 15.9 percent respectively, the age group of 35-59 years was the most affected with 44.1 percent; decomposition stains appeared in 48.4 percent of patients. Conclusions: The patients most affected by dental dyschromia were male, with an age range between 35-59 years and extrinsic causes(AU)


Subject(s)
Humans , Male , Female , Tooth Bleaching/methods , Epidemiology, Descriptive , Cross-Sectional Studies , Dentistry , Observational Study
5.
Rev. cuba. invest. bioméd ; 39(3): e559, jul.-set. 2020. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1138930

ABSTRACT

Introducción: Existen muchos estudios de efectividad del blanqueamiento dental; sin embargo, son muy pocos los que hablan de regresión de color (fenómeno que se produce posterior a un blanqueamiento dental), lo mismo ocurre en relación a pacientes fumadores. Objetivo Determinar la regresión de la luminosidad del color en pacientes sometidos a blanqueamiento dental casero con peróxido de carbamida al 10 por ciento, en pacientes fumadores y no fumadores. Métodos: Estudio descriptivo, transversal, en 43 pacientes de un grupo de 60 previamente tratados de forma casera durante 3 semanas con peróxido de carbamida al 10 por ciento. Fueron divididos en un grupo experimental (pacientes fumadores GE) y grupo control (no fumadores GC). Se midió la variación del color con el espectrofotómetro Vita Easyshade® a la semana, mes, 6 meses y 9 meses posblanqueamiento. Los datos obtenidos mediante la medición con el espectrofotómetro fueron analizados por el test de Shapiro Wilk y Kolmogorov-Smirnov para evaluar normalidad de la distribución y, posteriormente, sometidos al test Mann-Whitney U y Wilcoxon W (#945; = 0,05). Resultados: El delta L* fue: 2,3 (GE) y 3,66 (GC); deltas calculados con datos de los 9 meses vs. semana posblanqueamiento. No hubo diferencias estadísticamente significativas entre ambos grupos. Conclusiones: No existen diferencias estadísticamente significativas en la regresión del color posteriores al blanqueamiento casero con peróxido de carbamida al 10 por ciento en pacientes fumadores y no fumadores(AU)


Introduction: Many studies have been conducted about the effectiveness of tooth whitening, but few refer to color regression (a phenomenon occurring after tooth whitening) or to smoking patients. Objective: Determine color luminosity regression in smoking and nonsmoking patients undergoing home tooth whitening with 10 percent carbamide peroxide. Methods: A descriptive cross-sectional study was conducted of 43 patients from a group of 60 previously undergoing home treatment with 10 percent carbamide peroxide for 3 weeks. The patients were divided into an experimental group (EG, smoking patients) and a control group (CG, nonsmoking patients). A Vita Easyshade® spectrophotometer was used to measure color variation one week, one month, 6 months and 9 months after whitening. The data obtained by spectrophotometry were analyzed with the Shapiro-Wilk and the Kolmogorov-Smirnov tests to evaluate the normality of the distribution, and then they were subjected to the Mann-Whitney-Wilcoxon U test (α = 0,05). Results: Delta L* was 2,3 (EG) and 3,66 (CG); delta values were estimated from data obtained 9 months vs. one week after whitening. No statistically significant differences were found between the groups. Conclusions: No statistically significant color regression differences are found in either smoking or nonsmoking patients after home whitening with 10 percent carbamide peroxide(AU)


Subject(s)
Humans , Male , Female , Tooth Bleaching/methods , Color , Smokers , Carbamide Peroxide/therapeutic use , Epidemiology, Descriptive , Cross-Sectional Studies
6.
Rev. cuba. estomatol ; 57(2): e2229, abr.-jun. 2020. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1126499

ABSTRACT

RESUMEN Objetivo: Determinar la influencia en la variación de la autopercepción estética dental, al someterse a dos modalidades distintas de blanqueamiento dental. Métodos: Investigación descriptiva transversal con 48 pacientes que fueron tratados con dos sistemas de blanqueamiento. Se aplicó la encuesta "Perfil de impacto de salud oral", versión en español (OHIP-e, por sus siglas en inglés), con el fin de medir la autopercepción estética previamente al tratamiento de blanqueamiento. Estos pacientes fueron asignados a uno de los dos grupos de tratamiento, grupo de blanqueamiento "ambulatorio" o grupo de blanqueamiento "clínico". La encuesta OHIP-e volvió a ser aplicada una semana luego del término de la intervención. Se analizaron los puntajes obtenidos en la escala de autopercepción de estética bucal, antes y después de la intervención, en ambos grupos de estudio. Se realizó la prueba Z de Kolmogórov-Smirnov para determinar la normalidad de los puntajes promedio de OHIP-e. Se realizó una prueba t de Student, que evaluó el cambio de la autopercepción de estética dental antes y después al blanqueamiento. Los análisis estadísticos se realizaron aceptando una probabilidad de error tipo I de 0,05 (p< 0,05). Resultados: Los puntajes de OHIP-e inicialmente fueron distintos en ambos grupos y mejoraron (disminuyeron no significativamente con la aplicación de los tratamientos de blanqueamiento en ambos grupos, p< 0,05), excepto en la dimensión dolor físico en el grupo "clínico" (p= 0,03). Conclusiones: El blanqueamiento dental "ambulatorio" y "clínico", presentan un cambio en la autopercepción estética dental similar, luego de una semana de realizado el tratamiento. Ambos tratamientos presentaron un impacto positivo en la autopercepción estética dental de los pacientes(AU)


ABSTRACT Objective: Determine the effect of two different types of tooth whitening on dental esthetics self-perception. Methods: A descriptive cross-sectional study was conducted of 48 patients treated with two whitening systems. The Spanish version of the Oral Health Impact Profile (OHIP-e) was used to measure esthetic self-perception before the whitening treatment. The patients were assigned to one of two treatment groups: ambulatory whitening group and clinical whitening group. The OHIP-e survey was applied again one week after completion of the intervention. The scores obtained by both groups were analyzed with the oral esthetics self-perception scale before and after the intervention. The Kolmogorov-Smirnov Z test was applied to determine the normality of mean OHIP-e scores. Student's t test was used to evaluate the change in dental esthetics self-perception before and after whitening. The statistical analyses performed accepted a type I error probability of 0.05 (p< 0.05). Results: OHIP-e scores were initially different in the two groups and improved in both (decreased non-significantly with the application of the whitening treatments, p< 0.05), except for the physical pain dimension in the clinical group (p= 0.03). Conclusions: Ambulatory and clinical tooth whitening bring about a similar change in dental esthetics self-perception a week after completion of the treatment. Both treatments had a positive impact on the patients' dental esthetics self-perception(AU)


Subject(s)
Humans , Male , Female , Adult , Self Concept , Tooth Bleaching/methods , Esthetics, Dental , Epidemiology, Descriptive , Cross-Sectional Studies , Statistical Analysis
7.
J. appl. oral sci ; 28: e20190384, 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1134801

ABSTRACT

Abstract Objectives This study evaluated if the use of a bioactive glass-ceramic-based gel, named Biosilicate (BS), before, after or mixed with bleaching gel, could influence the inflammation of the dental pulp tissue of rats' molars undergoing dental bleaching with hydrogen peroxide (H2O2). Methodology The upper molars of Wistar rats (Rattus norvegicus, albinus) were divided into Ble: bleached (35% H2O2, 30-min); Ble-BS: bleached and followed by BS-based gel application (20 min); BS-Ble: BS-based gel application and then bleaching; BS/7d-Ble: BS-based gel applications for 7 days and then bleaching; Ble+BS: blend of H2O2 with BS-based gel (1:1, 30-min); and control: placebo gel. After 2 and 30 days (n=10), the rats were euthanized for histological evaluation. The Kruskal-Wallis and Dunn statistical tests were performed (P<0.05). Results At 2 days, the Ble and Ble-BS groups had significant alterations in the pulp tissue, with an area of necrosis. The groups with the application of BS-based gel before H2O2 had moderate inflammation and partial disorganization in the occlusal third of the coronary pulp and were significantly different from the Ble in the middle and cervical thirds (P<0.05). The most favorable results were observed in the Ble+BS, which was similar to the control in all thirds of the coronary pulp (P>0.05). At 30 days, the pulp tissue was organized and the bleached groups presented tertiary dentin deposition. The Ble group had the highest deposition of tertiary dentin, followed by the Ble-BS, and both were different from control (P<0.05). Conclusion A single BS-based gel application beforehand or BS-based gel blended with a bleaching gel minimize the pulp damage induced by dental bleaching.


Subject(s)
Animals , Male , Pulpitis/prevention & control , Tooth Bleaching/methods , Dental Pulp/drug effects , Tooth Bleaching Agents/chemistry , Glass/chemistry , Hydrogen Peroxide/chemistry , Pulpitis/chemically induced , Pulpitis/pathology , Time Factors , Tooth Bleaching/adverse effects , Random Allocation , Reproducibility of Results , Treatment Outcome , Rats, Wistar , Dental Pulp/pathology , Tooth Bleaching Agents/adverse effects , Hydrogen Peroxide/adverse effects , Molar
8.
J. appl. oral sci ; 28: e20190720, 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1134776

ABSTRACT

Abstract Objective This study evaluated the clinical effect of violet LED light on in-office bleaching used alone or combined with 37% carbamide peroxide (CP) or 35% hydrogen peroxide (HP). Methodology A total of 100 patients were divided into five groups (n=20): LED, LED/CP, CP, LED/HP and HP. Colorimetric evaluation was performed using a spectrophotometer (ΔE, ΔL, Δa, Δb) and a visual shade guide (ΔSGU). Calcium (Ca)/phosphorous (P) ratio was quantified in the enamel microbiopsies. Measurements were performed at baseline (T 0 ), after bleaching (T B ) and in the 14-day follow-up (T 14 ). At each bleaching session, a visual scale determined the absolute risk (AR) and intensity of tooth sensitivity (TS). Data were evaluated by one-way (ΔE, Δa, ΔL, Δb), two-way repeated measures ANOVA (Ca/P ratio), and Tukey post-hoc tests. ΔSGU and TS were evaluated by Kruskal-Wallis and Mann-Whitney, and AR by Chi-Squared tests (a=5%). Results LED produced the lowest ΔE (p<0.05), but LED/HP promoted greater ΔE, ΔSGU and Δb (T 14 ) than HP (p<0.05). No differences were observed in ΔE and ΔSGU for LED/CP and HP groups (p>0.05). ΔL and Δa were not influenced by LED activation. After bleaching, LED/CP exhibited greater Δb than CP (p>0.05), but no differences were found between these groups at T 14 (p>0.05). LED treatment promoted the lowest risk of TS (16%), while HP promoted the highest (94.4%) (p<0.05). No statistical differences of risk of TS were found for CP (44%), LED/CP (61%) and LED/HP (88%) groups (p>0.05). No differences were found in enamel Ca/P ratio among treatments, regardless of evaluation times. Conclusions Violet LED alone produced the lowest bleaching effect, but enhanced HP bleaching results. Patients treated with LED/CP reached the same efficacy of HP, with reduced risk and intensity of tooth sensitivity and none of the bleaching protocols adversely affected enamel mineral content.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Phototherapy/methods , Tooth Bleaching/methods , Tooth Bleaching Agents/administration & dosage , Carbamide Peroxide/administration & dosage , Hydrogen Peroxide/administration & dosage , Light , Reference Values , Spectrophotometry , Surface Properties/drug effects , Surface Properties/radiation effects , Risk Factors , Analysis of Variance , Treatment Outcome , Colorimetry , Combined Modality Therapy , Statistics, Nonparametric , Dental Enamel/drug effects , Dental Enamel/radiation effects , Dentin Sensitivity/chemically induced
9.
Rev. Ciênc. Plur ; 6(2): 101-112, 2020. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1100314

ABSTRACT

Introdução:Oclareamento dental é o procedimento estético mais realizado nos consultórios odontológicos. O uso de fontes luminosas tem sido recomendado para acelerar a ação do gel clareador, entretanto evidências científicas são controversas no que se diz respeito a essas fontes.Objetivo:Avaliar protocolos de clareamento dentário modificados por fontes luminosas, objetivando verificar, qual a influência dessas fontes no procedimento de clareamento dentário.Metodologia:Sendo essa, uma pesquisa que utilizou material biológico, a mesma foi submetida e aprovada pelo Comitê de Ética em Pesquisa da UEPB. Realizou-se a obtenção de dentes(n = 20)por meio de parceria com o Banco de Dentes Humanos do curso de Odontologia da UEPB Campus VIII. Posteriormente realizou-se identificação dos dentes, em seguida registro inicial da cor do dente(escala VITA), o preparo dos blocos dentários e seleção dos grupos. Os dentes foram submetidos a dois protocolos de clareamentos distintos, com luz halógena e com LED, com ou sem troca do gel. Por fim, realizada a análise estatística. Resultados:A modificação do protocolo, seja quanto o tempo de aplicação do agente clareador, seja quanto à fonte de luz utilizada, alcança resultados satisfatórios. Houve diferença estatisticamente significativa entre os gruposda luz halógena (p = 0.041)Conclusões:Tendo em vista os resultados e a discussão encontrados na pesquisa, podemos verificar que as evidências científicas nos levam a observar que não há bases suficientes que comprovem a eficácia e benefícios a curto prazo da modificação dos protocolos de clareamento dental pelas fontes luminosas (AU).


Introduction:Tooth whitening is the most common cosmetic procedure performed in dental offices. The use of light sources has been recommended to accelerate the action of the whitening gel;however scientific evidence is controversial regardingthese sources.Objective:Evaluate tooth whitening protocols modified by light sources, aiming to verify, what is the influence of these sources in the tooth whitening procedure. Methodology:This being a research that used biological material, it was submitted and approved by theResearch Ethics Committee of UEPB. Teeth (n = 20) were obtained through a partnership with the Human Teeth Bank of the Dentistry course at UEPB Campus VIII. Subsequently, teeth identification was performed, followed by initial registration of tooth color(VITA scale), preparation of dental blocks and selection of groups. The teeth were submitted to two different whitening protocols, with halogen light and with LED, with or without changing the gel. Finally, statistical analysis was performed. Results:Themodification of the protocol, both in terms of the application time of the bleaching agent and in terms of the light source used, achieves satisfactory results. There was statistically significant difference between groupswith halogen light (p = 0.041). Conclusions:In view of the results and the discussion found in the research, we can see that the scientific evidence leads us to observe that there are not enough bases to prove the effectiveness and short-term benefits of modifying the teeth whitening protocols by light sources (AU).


Introducción: El blanqueamiento dental es el procedimiento cosmético más común que se realiza en consultorios dentales. Se ha recomendado el uso de fuentesde luz para acelerar la acción del gel blanqueador, sin embargo, la evidencia científica es controvertida con respecto a estas fuentes.Objetivo: Evaluar los protocolos de blanqueamiento dental modificados por fuentes de luz, con el objetivo de verificar cuál es la influencia de estas fuentes en el procedimiento de blanqueamiento dental. Metodología: Al tratarse de una investigación que utilizó material biológico, fue presentada y aprobada por el Comité de Ética en Investigación de la UEPB. Los dientes (n = 20) se obtuvieron a través de una asociación con el Banco de Dientes Humanos del curso de Odontología en el Campus VIII de la UEPB. Posteriormente, se realizó la identificación de los dientes, seguida del registro inicial del color del diente(escala VITA), la preparación de los bloques dentales y la selección de grupos. Los dientes fueron sometidos a dos protocolos diferentes de blanqueamiento, con luz halógena y con LED, con o sin cambiar el gel. Finalmente, se realizó un análisis estadístico. Resultados: La modificación del protocolo, tanto en términos del tiempo de aplicación del agente blanqueador como en términos de la fuente de luz utilizada, logra resultados satisfactorios. Hubo diferencias estadísticamente significativas entre los gruposcom luz halógena (p =0.041).Conclusiones: En vista de los resultados y la discusión encontrada en la investigación, podemos ver que la evidencia científica nos lleva a observar que no hay suficientes bases para probar la efectividad y los beneficios a corto plazo de modificar los protocolos de blanqueamiento dental por fuentes de luz (AU).


Subject(s)
Humans , Tooth Bleaching/methods , Clinical Protocols , Hydrogen Peroxide , Lasers , Light , Brazil , Statistics, Nonparametric , Molar
10.
Rev. Ciênc. Plur ; 6(3): 239-254, 2020. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1128178

ABSTRACT

Introdução: Os padrões de beleza atuais aumentaram o nível de exigência estética e a busca por sorrisos cada vez mais harmônicos. As facetas cerâmicas destacam-se dentre as opções de tratamentos por associarem estética, longevidade e previsibilidade. Objetivo: Este trabalho objetivou apresentar um caso clínico de substituição de facetas diretas de resina composta por facetas indiretas de porcelana. Descrição do caso: A pacienteC.L.M, 25 anos, sexo feminino relatou insatisfação com a estética do seu sorriso, destacando o formato, o tamanho e a cor 1M2dos elementos dentários 11 e 21. Diante da queixa e da situação clínica observada, propôs-se a confecção de laminados cerâmicos de dissilicato de lítio, mediante a realização prévia de gengivoplastia e de clareamento dentário. Conclusões: Conclui-se que o planejamento cuidadoso, o conhecimento da técnica operatória e a execução adequada do protocolo reabilitador permitem que os laminados cerâmicos reestabeleçam o sorriso de forma estética e funcional (AU).


Introduction:The current beauty standards have increased the level of aesthetic demand and the search for more and more harmonious smiles. The ceramicveneers stand out among the treatment options for combining aesthetics, longevity and predictability. Objective:This study aimed to present a clinical case of substitution of direct resin veneers composed of indirect porcelain veneers. Case description:Patient C.L.M, 25 years old, female, reported dissatisfaction with the aesthetics of her smile, highlighting the shape, size and 1M2 colorof dental elements 11 and 21. In view of the complaint and the clinical situation observed, it was proposed to make lithium disilicate ceramic veneers, through previous gingivoplasty and tooth bleaching. Conclusions:It is concluded that the careful planning, the knowledge of the operative technique and the proper execution of the rehabilitation protocol allow the ceramic veneers to reestablish the smile in an aesthetic and functional way (AU).


Introducción: los estándares de belleza actuales han aumentado el nivel de demanda estética y la búsqueda de sonrisas cada vez más armoniosas. Las facetas cerámicas se destacan entre las opciones de tratamiento para combinar estética, longevidad y previsibilidad. Objetivo: Este estudio tuvo como objetivo presentar un caso clínico de sustitución de carillas de resina directas compuestas de carillas de porcelana indirectas.Descripción del caso: La paciente C.L.M, 25 años, mujer, refirió insatisfacción con la estética de su sonrisa, destacando la forma, tamaño y color 1M2de los elementosdentales 11 y 21. En vista de la queja y la situación clínica observada, se propuso hacer laminados de cerámica disilicato de litio, mediante reparación gingival previa y blanqueamiento dental. Conclusiones: se concluye que la planificación cuidadosa, el conocimiento de la técnica operativa y la ejecución adecuada del protocolo de rehabilitación permiten a los laminados cerámicos restablecer la sonrisa de una manera estética y funcional (AU).


Subject(s)
Humans , Female , Adult , Tooth Bleaching/methods , Dental Porcelain , Dental Veneers , Esthetics, Dental , Gingivoplasty , Brazil , Radiography, Dental/instrumentation
11.
J. appl. oral sci ; 27: e20180442, 2019. tab, graf
Article in English | LILACS | ID: biblio-1002405

ABSTRACT

Abstract Objective To assess pulp oxygen saturation levels (SaO2) in maxillary central incisors after dental bleaching. Materials and Methods 80 participants (160 teeth) were randomly allocated to four groups: G1 In-office bleaching with two applications of 35% hydrogen peroxide (HP) (20 minutes), followed by at-home bleaching with 10% carbamide peroxide (CP) (2 hours/day for 16 days); G2 - Same protocol as G1, plus desensitizing toothpaste; G3 - In-office bleaching with 35% HP and one application of placebo gel (20 minutes), followed by at-home bleaching with 10% CP (2 hours/day for 16 days); and G4 - Same protocol as G3, plus desensitizing toothpaste. Pulp SaO2 levels were measured before (T0) and immediately after (T1) in-office bleaching; on the 5th (T2), 8th (T3), 12th (T4), and 16th days of at-home bleaching (T5); and on the 7th (T6) and 30th (T7) days. Mean (SD) pulp SaO2 levels were compared within groups by generalized estimating equations (GEE) and Student's t-test (P<0.05). Results Mean pulp SaO2 at T0 was 84.29% in G1, 84.38% in G2, 84.79% in G3, and 85.83% in G4. At T1, these values decreased to 81.96%, 82.06%, 82.19%, and 81.15% in G1, G2, G3, and G4 respectively, with significant difference in G4 (P<0.05). During home bleaching, pulp SaO2 levels varied in all groups, with 86.55%, 86.60%, 85.71%, and 87.15% means at T7 for G1, G2, G3, and G4, respectively; G2 presented significant difference (P<0.05). Conclusions Pulp SaO2 level in maxillary central incisors was similar at baseline, reducing immediately after in-office bleaching, regardless of using desensitizing toothpaste and increasing at 30 days after dental bleaching.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Oxygen/metabolism , Tooth Bleaching/adverse effects , Dental Pulp/metabolism , Tooth Bleaching Agents/adverse effects , Incisor/metabolism , Reference Values , Time Factors , Tooth Bleaching/methods , Toothpastes/therapeutic use , Oximetry/methods , Treatment Outcome , Dental Pulp/drug effects , Dentin Sensitivity/chemically induced , Dentin Sensitivity/prevention & control , Dentin Desensitizing Agents/therapeutic use , Carbamide Peroxide/adverse effects , Hydrogen Peroxide/adverse effects , Incisor/drug effects
12.
J. appl. oral sci ; 27: e20180453, 2019. graf
Article in English | LILACS | ID: biblio-1012522

ABSTRACT

Abstract Objective This study was designed for the chemical activation of a 35% hydrogen peroxide (H2O2) bleaching gel to increase its whitening effectiveness and reduce its toxicity. Methodology First, the bleaching gel - associated or not with ferrous sulfate (FS), manganese chloride (MC), peroxidase (PR), or catalase (CT) - was applied (3x 15 min) to enamel/dentin discs adapted to artificial pulp chambers. Then, odontoblast-like MDPC-23 cells were exposed for 1 h to the extracts (culture medium + components released from the product), for the assessment of viability (MTT assay) and oxidative stress (H2DCFDA). Residual H2O2 and bleaching effectiveness (DE) were also evaluated. Data were analyzed with one-way ANOVA complemented with Tukey's test (n=8. p<0.05). Results All chemically activated groups minimized MDPC-23 oxidative stress generation; however, significantly higher cell viability was detected for MC, PR, and CT than for plain 35% H2O2 gel. Nevertheless, FS, MC, PR, and CT reduced the amount of residual H2O2 and increased bleaching effectiveness. Conclusion Chemical activation of 35% H2O2 gel with MC, PR, and CT minimized residual H2O2 and pulp cell toxicity; but PR duplicated the whitening potential of the bleaching gel after a single 45-minute session.


Subject(s)
Tooth Bleaching/methods , Tooth Bleaching Agents/toxicity , Tooth Bleaching Agents/chemistry , Hydrogen Peroxide/toxicity , Hydrogen Peroxide/chemistry , Reference Values , Time Factors , Ferrous Compounds/chemistry , Catalase/chemistry , Cell Survival , Cells, Cultured , Chlorides/chemistry , Reproducibility of Results , Analysis of Variance , Manganese Compounds/chemistry , Color , Peroxidase/chemistry , Statistics, Nonparametric , Dental Pulp/chemistry , Dental Pulp/diagnostic imaging , Dentin/drug effects , Dentin/chemistry , Odontoblasts/drug effects
13.
J. appl. oral sci ; 27: e20180233, 2019. tab, graf
Article in English | LILACS | ID: biblio-975899

ABSTRACT

Abstract Objective: To analyze color change, microhardness and chemical composition of enamel bleached with in-office bleaching agent with different desensitizing application protocols. Materials and Methods: One hundred and seventeen polished anterior human enamel surfaces were obtained and randomly divided into nine groups (n = 13). After recording initial color, microhardness and chemical composition, the bleaching treatments were performed as G1: Signal Professional White Now POWDER&LIQUID FAST 38% Hydrogen peroxide(S); G2: S+Flor Opal/0.5% fluoride ion(F); G3: S+GC Tooth Mousse/Casein Phosphopeptide-Amorphous Calcium Phosphate (CPP-ACP) paste(TM); G4: S+UltraEZ/3% potassium nitrate&0.11% fluoride(U); G5: S+Signal Professional SENSITIVE PHASE 1/30% Nano-Hydroxyapatite (n-HAP) suspension(SP); G6: S-F mixture; G7: S-TM mixture; G8: S-U mixture; G9: S-SP mixture. Color, microhardness and chemical composition measurements were repeated after 1 and 14 days. The percentage of microhardness loss (PML) was calculated 1 and 14 days after bleaching. Data were analyzed with ANOVA, Welch ANOVA, Tukey and Dunnett T3 tests (p<0.05). Results: Color change was observed in all groups. The highest ΔE was observed at G7 after 1 day, and ΔE at G8 was the highest after 14 days (p<0.05). A decrease in microhardness was observed in all groups except G6 and G7 after 1 day. The microhardness of all groups increased after 14 days in comparison with 1 day after bleaching (p>0.05). PML was observed in all groups except G6 and G7 after bleaching and none of the groups showed PML after 14 days. No significant changes were observed after bleaching at Ca and P levels and Ca/P ratios at 1 or 14 days after bleaching (p>0.05). F mass increased only in G2 and G6, 1 day after bleaching (p<0.05). Conclusions: The use of desensitizing agents containing fluoride, CPP-ACP, potassium nitrate or n-HAP after in-office bleaching or mixed in bleaching agent did not inhibit the bleaching effect. However, they all recovered microhardness of enamel 14 days after in-office bleaching.


Subject(s)
Humans , Tooth Bleaching/methods , Dental Enamel/drug effects , Dentin Desensitizing Agents/chemistry , Tooth Bleaching Agents/chemistry , Reference Values , Saliva, Artificial/chemistry , Spectrometry, X-Ray Emission , Spectrophotometry , Surface Properties/drug effects , Time Factors , Materials Testing , Calcium Phosphates/chemistry , Microscopy, Electron, Scanning , Caseins/chemistry , Random Allocation , Reproducibility of Results , Analysis of Variance , Potassium Compounds/chemistry , Color , Statistics, Nonparametric , Dental Enamel/chemistry , Hardness Tests , Hydrogen Peroxide/chemistry , Nitrates/chemistry
14.
J. appl. oral sci ; 27: e20180051, 2019. tab, graf
Article in English | LILACS | ID: biblio-975887

ABSTRACT

Abstract The efficacy of whitening toothpastes is questionable and controversial. Clinicians, patients and researchers have expressed concern with whitening toothpastes due to the risk of wearing the dental structure and the potential for disappointment if the advertised cosmetic results are not achieved. Objective: This study compared the whitening performance of toothpastes with different whitening technologies after initial and continued use. Material and Methods: Ninety bovine incisors were stained using a concentrated solution of black tea. They were randomly distributed into 6 groups, according to the toothpaste whitening technology: activated charcoal (B&W), blue covarine (WAD), hydrogen peroxide (LWA), microbeads (Oral B 3D White Perfection - 3DW) and optimized abrasives (XW4D). They were compared to a traditional toothpaste without a whitening agent (TA - control). Specimens underwent a brushing machine with controlled pressure, time and temperature. A calibrated examiner measured the color using a VITA-Classical scale before the first brushing cycle (T0), after the first brushing cycle (TI), and after a brushing cycle that simulates continuous use (TCU). Whitening performance was evaluated by the difference of shades (ΔSGU) between T0-TI and T0-TCU timepoints, using the Kruskal-Wallis and Dunn's non-parametric test. The Wilcoxon test was used to evaluate the cumulative effect (α=0.05). Results: Statistically significant differences were observed between toothpastes in both TI and TCU (p<0.05). The time of use also had a significant effect (p<0.05). Conclusion: Only WAD and 3DW showed whitening performance after the first use (TI). The greatest whitening performance after continuous use was obtained by WAD, followed by LWA and 3DW. The use of conventional toothpaste (TA) promotes no tooth whitening. Clinical relevance: Microbead abrasives (3DW) and blue covarine (WAD) were the active technology tested that presented the best global tooth whitening performance.


Subject(s)
Animals , Cattle , Tooth Bleaching/methods , Toothpastes/chemistry , Charcoal/chemistry , Isoindoles/chemistry , Tooth Bleaching Agents/chemistry , Hydrogen Peroxide/chemistry , Metalloporphyrins/chemistry , Microspheres , Reference Values , Surface Properties , Time Factors , Tooth/drug effects , Toothbrushing/methods , Random Allocation , Reproducibility of Results
15.
Int. j. odontostomatol. (Print) ; 12(4): 416-422, dic. 2018. tab, graf
Article in Spanish | LILACS | ID: biblio-975767

ABSTRACT

RESUMEN: El resultado del tratamiento de blanqueamiento dental puede verse afectado en pacientes que consumen bebidas pigmentantes durante el tratamiento. El objetivo de este trabajo consistió en valuar el efecto in vitro de la exposición al extracto de maíz morado (chicha morada) sobre el color del esmalte humano, durante y después del tratamiento del blanqueamiento dental con peróxido de hidrógeno al 35 %. Se utilizaron 48 dientes humanos, divididos en grupos según la bebida a la que se expuso: Extracto de maíz morado peruano (MM), té verde (T) y agua destilada (A); la mitad de los especímenes expuestos a cada bebida fueron sometidos a blanqueamiento dental con peróxido de hidrógeno al 35 % durante los primeros días de exposición a la pigmentación, resultando en los siguientes grupos: Grupo A: Sin blanqueamiento + maíz morado, Grupo B: Sin blanqueamiento + té verde, Grupo C: Sin blanqueamiento + agua destilada, Grupo D: Con blanqueamiento + maíz morado, Grupo E: Con blanqueamiento + té verde, Grupo F: Con blanqueamiento + agua destilada. Los cambios de color se midieron con un espectrofotómetro digital (VITA Easyshade Advance 4.0, VITA, Alemania) antes del blanqueamiento, durante el blanqueamiento, finalizado el blanqueamiento y al final de los 36 días de exposición a los pigmentos. Según el ∆E, el extracto de maíz morado difiere significativamente con el agua destilada (p < 0,05). Con respecto al grado de luminosidad, el extracto de maíz morado con blanqueamiento presentó los menores valores de luminosidad (p < 0,05). En cuanto al croma, no hubo diferencias entre los grupos (p > 0,05). La exposición al extracto de maíz morado pigmenta los dientes, durante el blanqueamiento el extracto de maíz morado no afecta el tratamiento, pero si la exposición continúa luego del blanqueamiento dental, el color de los dientes se verá afectado.


ABSTRACT: The result of tooth whitening treatment may be affected in patients who consume staining drinks during treatment. The aim of this work was to evaluate the in vitro effect of the exposure to purple corn extract (chicha morada) on human enamel color, during and after the treatment of teeth whitening with 35 % hydrogen peroxide. Forty-eight human teeth were used, divided into groups according to the drink to which it was exposed: Peruvian purple corn extract (MM), green tea (T) and distilled water (A); half of the specimens exposed to each drink were subjected to tooth whitening with 35 % hydrogen peroxide during the first days of exposure to pigmentation, resulting in the following groups: Group A: Without bleaching + purple corn, Group B: Without whitening + green tea, Group C: No whitening + distilled water, Group D: With whitening + purple corn, Group E: With whitening + green tea, Group F: With whitening + distilled water. The color changes were measured with a digital spectrophotometer (VITA Easyshade Advance 4.0, VITA, Germany) before bleaching, during whitening, after whitening and at the end of 36 days of exposure to pigments. According to the ∆E, the purple corn extract differs significantly with the distilled water (p <0.05). Regarding the degree of luminosity, the purple corn extract with whitening presented the lowest luminosity values (p <0.05). As for the chroma, there were no differences between the groups (p> 0.05). Exposure to purple corn extract pigments the teeth, during whitening the purple corn extract does not affect the treatment, but if the exposure continues after tooth whitening, the color of the teeth will be affected.


Subject(s)
Humans , Pigments, Biological/chemistry , Tooth Bleaching/methods , Zea mays/chemistry , Tooth Bleaching Agents/chemistry , Beverages , In Vitro Techniques , Plant Extracts/chemistry , Color , Hydrogen Peroxide
16.
Braz. dent. j ; 29(6): 541-546, Nov.-Dec. 2018. tab, graf
Article in English | LILACS | ID: biblio-974196

ABSTRACT

Abstract The present study assessed oxygen saturation (SaO2) levels before, during, and after at-home bleaching treatment in the pulps of healthy maxillary central incisors. SaO2 levels were measured in 136 healthy maxillary central incisors using a pulse oximeter. The bleaching protocol consisted of 10% carbamide peroxide gel placed in individual trays and used for four hours daily for 14 days. SaO2 levels were assessed before bleaching (T0), immediately after the first session (T1), on the 7th day of treatment (T2), on the 15th day (the day following the last session) (T3), and 30 days after completion of the bleaching protocol (T4). Data were statistically analyzed using generalized estimating equations (GEE), Student's t test (p<0.05) and Pearson's correlation. Mean pulp SaO2 levels were 85.1% at T0, 84.9% at T1, 84.7% at T2, 84.3% at T3, and 85.0% at T4. Gradual reductions in SaO2 levels were observed, with significant differences (p<0.001) during the course of home bleaching treatment. However, 30 days after the end of the bleaching protocol, SaO2 levels returned to baseline levels. Home bleaching caused a reversible transient decrease in SaO2 levels in the pulps.


Resumo Este estudo verificou o grau de saturação de oxigênio (SaO2) pulpar antes, durante e após o clareamento dental caseiro em incisivos centrais superiores hígidos. O nível de SaO2 foi verificado em 136 incisivos centrais superiores hígidos usando oxímetro de pulso. A técnica de clareamento empregou peróxido de carbamida 10% em moldeira individual por quatro horas diárias durante 14 dias. Os níveis de SaO2 foram analisados antes do clareamento (T0), imediatamente após a primeira sessão (T1), no sétimo dia de tratamento (T2), no décimo quinto dia (um dia após a última sessão) (T3) e 30 dias após o término do clareamento dental (T4). A análise estatística utilizou o modelo de equações de estimações generalizadas (GEE), teste t de Student (p<0,05) e correlação de Pearson. Os níveis médios de SaO2 pulpar foram 85,1% em T0, 84,9% em T1, 84,7% em T2, 84,3% em T3 e 85,0% em T4. Foi observada uma redução gradual dos níveis de SaO2, com diferenças significantes (p<0,001) durante o clareamento dental caseiro. No entanto, 30 dias após o término do clareamento dental, houve retorno aos valores iniciais. O clareamento dental caseiro provocou uma diminuição transitória reversível no grau de SaO2 pulpar.


Subject(s)
Humans , Male , Female , Adult , Oxygen/metabolism , Tooth Bleaching/methods , Dental Pulp/drug effects , Dental Pulp/metabolism , Carbamide Peroxide/pharmacology , Incisor/drug effects , Oximetry , Prospective Studies , Dental Pulp Test , Tooth Bleaching Agents/pharmacology , Maxilla
17.
Odovtos (En línea) ; 20(3): 71-79, Sep.-Dec. 2018. tab
Article in Spanish | LILACS, BBO | ID: biblio-1091461

ABSTRACT

RESUMEN El objetivo del presente estudio fue evaluar los efectos de la aplicación de un antioxidante sobre las fuerzas de unión (SBS) de brackets de ortodoncia posterior al blanqueamiento con peróxido de hidrógeno (HP). Metodología: Cincuenta premolares recién extraídos se dividieron aleatoriamente en tres grupos. El Grupo 1 se trató con 40% de HP (n=20), el grupo 2 con 40% de HP y se activó con láser de Nd: YAG (n=20) y un grupo de control (Grupo 3) no recibió tratamiento (n=10). Después del blanqueamiento, los Grupos 1 y 2 se dividieron en dos subgrupos (Grupo 1a, Grupo 1b, Grupo 2a y Grupo 2b). Las muestras en los subgrupos 1a y 2a (n=10) no recibieron ninguna aplicación del antioxidante. Se aplicó una solución de ascorbato de sodio al 10% a las muestras en los Grupos 1b y 2b (n=10). Luego, los brackets se adherieron a las superficies de esmalte de todos los grupos experimentales. Las muestras se sometieron a pruebas de SBS y los datos analizados estadisticamente. Resultados: La fuerza de unión de los grupos 1 y 2 fue significativamente más baja que el grupo de control (p <0.001); sin embargo, no se observaron diferencias estadísticamente significativas en SBS entre los grupos 1 y 2 (p>0.001). Las muestras tratadas con antioxidantes de los grupos 1b y 2b fueron significativamente mayores que las de los grupos 1a y 2a (p <0,001). Conclusion: La aplicación de 40% HP tuvo un efecto negativo en la resistencia de unión de los brackets. El uso de antioxidante durante 15 minutos mejoró significativamente la SBS.


ABSTRACT Purpose: The purpose of this study was to evaluate the effects of the application of antioxidant on the shear bond strengths (SBS) of orthodontic brackets bonded to human enamel after extra-coronal bleaching with hydrogen peroxide (HP). Materials and methods: Fifty freshly extracted premolars were randomly divided into three groups. One group (Group 1) was bleached with 40% HP (n=20), another group (Group 2) was bleached with 40% HP and activated with an Nd: YAG laser (n=20), and a control group (Group 3) received no treatment (n=10). After the bleaching procedure, Groups 1 and 2 were further divided into two subgroups (Group 1a, Group 1b, Group 2a, and Group 2b). Specimens in Groups 1a and 2a (n=10) received no antioxidant application. A 10% sodium ascorbate solution was applied to specimens in Groups 1b and 2b (n=10). The brackets were then bonded with light-cure adhesive paste to the enamel surfaces of all experimental groups. Specimens were subjected to SBS tests for debonding. Results: The SBS of brackets bonded in Groups 1 and 2 were significantly lower than those of brackets bonded to the control group (p<0.001); however, no statistically significant differences in SBS were noted in Groups 1 and 2 (p>0.001). The antioxidant-treated SBS of brackets in Groups 1b and 2b were significantly higher than those of Groups 1a and 2a (p<0.001). Conclusions: The application of 40% HP had a negative effect on the bond strength. The use of antioxidant for 15 min resulted in the reversal of failed bond strength.


Subject(s)
Tooth Bleaching/methods , Orthodontic Brackets , Shear Strength/drug effects , Hydrogen Peroxide/adverse effects , Laser Therapy
18.
Int. j. odontostomatol. (Print) ; 12(2): 152-159, jun. 2018. tab, graf
Article in Spanish | LILACS | ID: biblio-954258

ABSTRACT

RESUMEN: El objetivo del presente trabajo fue comparar espectrofotométricamente el número de sesiones para un cambio efectivo de coloración con peróxido de carbamida al 100 %, 37 % y peróxido de hidrógeno al 35 %, a través de la técnica Walking Bleach. Este fue un estudio experimental, in vitro, en paralelo, con ciego en la medición del efecto y en el análisis de datos. Se utilizaron 88 premolares extraídos por indicación ortodóncica. Estos fueron tratados endodónticamente y artificialmente pigmentados con cromógenos derivados de productos de descomposición de la sangre. Se dividieron aleatoriamente en 4 grupos de 22 dientes (un grupo por cada agente blanqueador, más un grupo control con agua destilada). El régimen de tratamiento para cada grupo fue de 4 sesiones existiendo una separación de 4 días entre cada una. El registro de color previo (baseline) y posterior a cada aplicación fue realizado mediante el espectrofotómetro dental Vita Easyshade V, con el cual se registraron los colores en espacio de color CIE L*a*b*. Se calcularon posteriormente los valores de la variación total de color (DE) entre los parámetros iniciales y los distintos tiempos de evaluación. El análisis de significancia se realizó mediante la prueba Kruskal-Wallis y para comparar las diferencias se usó el test de comparaciones múltiples por pares mediante el procedimiento de Steel-Dwass-Critchlow-Fligner, registrando diferencias estadísticamente significativas en la variación total del color desde la primera sesión de blanqueamiento. En conclusión, utilizando peróxido de carbamida al 100 %, la técnica Walking Bleach no requiere un menor número de sesiones para un cambio efectivo de coloración al compararlo con peróxido de hidrógeno al 35 %, pero si con relación al peróxido de carbamida al 37 %, donde el objetivo se consigue en un menor número de sesiones.


ABSTRACT: The objective of this study was to spectrophotometrically compare the number of sessions for an effective color change using 100 % and 37 % carbamide peroxide, and 35 % hydrogen peroxide, applying the Walking Bleach technique. This was an experimental study, performed in vitro, in parallel, and was a blind study in relation to the measurement of the effect and the analysis of data. 88 premolars extracted by orthodontics indications were used. These were endodontically treated and artificially pigmented with chromogens derived from blood decomposition products. They were randomly divided into 4 groups of 22 teeth (one group for each whitening agent, plus a control group with distilled water). The treatment regime for each group was 4 sessions, with a separation of 4 days between each session. The registration of color before (baseline) and after each application was done using the dental spectrophotometer Vita Easyshade V, with which the colors were registered in the CIE L*a*b* color space. The values of total color variation (DE) were later calculated between the initial parameters and the different stages of evaluation. Significance testing was undertaken using Kruskal-Wallis and to compare the differences the method used was Steel-Dwass-Critchlow- Fligner, registering significant statistical differences in the total color variation from the first bleaching session. In conclusion, using 100 % carbamide peroxide, the Walking Bleach technique does not require fewer sessions for an effective change in coloration when compared to 35 % hydrogen peroxide, however, it does using 37 % carbamide peroxide, where the result is achieved in a lower number of sessions.


Subject(s)
Humans , Spectrophotometry/methods , Tooth Bleaching/methods , Carbamide Peroxide/pharmacology , Chile , Epidemiology, Experimental , Coloring Agents/analysis , Hydrogen Peroxide
19.
Int. j. odontostomatol. (Print) ; 12(2): 121-124, jun. 2018. tab
Article in Spanish | LILACS | ID: biblio-954252

ABSTRACT

RESUMEN: El objetivo de este estudio in vitro fue evaluar la eficacia en el aclaramiento dental de tres enjuagues orales que contienen peróxido de hidrógeno en diferentes períodos de inmersión en comparación con el peróxido de carbamida al 10 %. Cuarenta muestras de premolares humanos se dividieron aleatoriamente en cuatro grupos según el agente al que se expuso: G1: Colgate Plax®Whitening, G2: Listerine®Whitening Extreme y G3: Oral B® 3D White™ se sumergieron dos minutos al día durante 28 días y G4: Peróxido de carbamida al 10 %, ocho horas al día durante 14 días. La medición de color se realizó con un espectrofotómetro Vita Easyshade usando la escala CIELab inicialmente, a los 14, 28 y 35 días de evaluación. Las comparaciones entre los grupos se realizaron utilizando las pruebas Kruskal-Wallis y U Mann-Whitney, mientras que entre los tiempos las pruebas Friedman y Signo-Rango de Wilcoxon. Los resultados revelaron que a los 14 días, los cuatro grupos mostraron cambios de color, pero no se evidenció mayor eficacia de alguno sobre el otro (p>0,05). Sin embargo, a los 28 y 35 días se observó una clara eficacia del peróxido de carbamida sobre los enjuagues (p<0,05). Los enjuagatorios orales aclaran los dientes a partir de los 28 días, con los protocolos indicados; sin embargo no llegan a tener resultados similares a un aclaramiento profesional con gel de peróxido de carbamida al 10 %.


ABSTRACT: The objective of this in vitro study was to evaluate the efficacy in dental toothbleaching of three mouthwashes containing hydrogen peroxide in different periods of immersion compared to 10 % carbamide peroxide. Forty samples of human premolars were randomly divided into four groups according to the agent to which they were exposed: G1: Colgate Plax®Whitening, G2: Listerine®Whitening Extreme and G3: Oral B® 3D White ™ were immersed two minutes a day during 28 days and G4: 10 % carbamide peroxide, eight hours a day for 14 days. The color measurement was performed with a Vita Easyshade spectrophotometer using the CIELab scale initially, at 14, 28 and 35 days of evaluation. The comparisons between the groups were made using the Kruskal-Wallis and U Mann-Whitney tests. While between the times the tests Friedman and Sign-Range of Wilcoxon. The results revealed that at 14 days, the four groups showed color changes, but no greater effectiveness was shown of one over the other (p>0,05). However, at 28 and 35 days a clear efficacy of carbamide peroxide was observed on the rinses (p<0,05). Mouthwashes clear the teeth after 28 days, with the indicated protocols; however, they do not reach similar results to a professional clarification with 10 % carbamide peroxide gel.


Subject(s)
Humans , Self Care/methods , Tooth Bleaching/methods , Tooth Bleaching Agents/therapeutic use , Spectrophotometry , In Vitro Techniques , Carbamide Peroxide/therapeutic use , Hydrogen Peroxide/therapeutic use , Mouthwashes/therapeutic use
20.
Braz. dent. j ; 29(2): 109-116, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-951533

ABSTRACT

Abstract This study aimed to evaluate the effect on oral health-related quality of life (OHRQoL) of two treatment protocols for dental fluorosis in individuals enrolled in a randomized clinical trial. Seventy volunteers, who lived in a fluorosis endemic area in Brazil, and had at least four maxillary anterior teeth showing fluorosis with a Thylstrup and Fejerskov index from 1 to 7, were randomized into two treatment groups (n= 35): GI- enamel microabrasion; or GII- microabrasion associated with at-home bleaching. Microabrasion was performed using 37% phosphoric acid and pumice, and at-home tooth bleaching with 10% carbamide peroxide in a tray. Volunteers completed a questionnaire at baseline and 1-month post treatment to assess changes in OHRQoL, using the Oral Impact on Daily Performance (OIDP). Differences in overall impact scores between and within treatment groups were analyzed with Wilcoxon (within) and Mann-Whitney (between) tests. Changes in performance scores were analyzed using Wilcoxon tests (a< 0.05). One month after treatment, subjects reported improvement in OHRQoL. Both groups showed lower OIDP scores (p< 0.001), but there was no difference between them. Eating, cleaning teeth, smiling and emotional state performance scores were lower after treatment for the whole sample. In conclusion, the treatment with microabrasion improved the OHRQoL in this sample of individuals living in a fluorosis endemic area regardless of the addition of at-home bleaching.


Resumo Este estudo teve como objetivo avaliar o efeito na qualidade de vida relacionada à saúde bucal (QVRSB) de dois protocolos de tratamento para fluorose dentária, em indivíduos incluídos em um ensaio clínico randomizado. Setenta voluntários, os quais viviam em uma área de fluorose endêmica no Brasil, e que possuíam pelo menos quatro dentes ântero-superiores com índice de Thylstrup e Fejerskov de 1 a 7, foram randomizados em dois grupos de tratamento (n= 35): GI- microabrasão de esmalte; ou GII- microabrasão associada com clareamento caseiro. A microabrasão foi realizada com ácido fosfórico 37% e pedra pomes e, o clareamento caseiro com peróxido de carbamida 10% e uso de moldeira. Os voluntários responderam um questionário antes e 1 mês após o tratamento, visando avaliar mudanças na QVRSB através do instrumento Oral Impact on Daily Performance (OIDP). Diferenças nos escores de impacto geral entre e nos mesmos grupos de tratamento foram analisadas através dos testes Wilcoxon (mesmo grupo) e Mann-Whitney (entre grupos), respectivamente. Alterações no escores dos domínios foram analisadas usando o teste Wilcoxon (a<0.05). Um mês após o tratamento, os indivíduos relataram melhora na QVRSB. Ambos os grupos apresentaram menores escores do OIDP (p<0,001), sem diferença entre eles. Os escores dos domínios comer, limpar os dentes, sorrir e estado emocioal diminuíram após o tratamento para toda a amostra. Concluiu-se que o tratamento com microabrasão melhorou a QVRSB de indivíduos vivendo em uma área de fluorose endêmica independentemente da associação com o clareamento caseiro.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Phosphoric Acids/administration & dosage , Quality of Life , Oral Health , Enamel Microabrasion/methods , Carbamide Peroxide/administration & dosage , Fluorosis, Dental/drug therapy , Phosphoric Acids/therapeutic use , Tooth Bleaching/methods , Brazil/epidemiology , Surveys and Questionnaires , Silicates , Endemic Diseases , Carbamide Peroxide/therapeutic use , Fluorosis, Dental/psychology , Fluorosis, Dental/epidemiology
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