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1.
Braz. j. oral sci ; 21: e224013, jan.-dez. 2022. ilus
Article in English | LILACS, BBO | ID: biblio-1354702

ABSTRACT

Aim: The aim of the study was to evaluate the cleaning of mandibular incisors with WaveOne Gold® (WO) under different preparation techniques. Methods: A total of 210 human mandibular incisors were selected and divided into seven groups (n = 30), prepared by WO single-files (Small 20/.07 ­ WOS; Primary 25/.07 ­ WOP; Medium 35/.06 ­ WOM; or Large 45/.05 - WOL) and sequential-file techniques (WOS to WOP; WOS to WOM; and WOS to WOL). Further subdivision was made according to irrigation protocol: control group (manual irrigation - CON), E1 Irrisonic® - EIR, and EDDY® - EDD. Debris removal and the smear layer were evaluated by scanning electron microscopy. Data were analyzed by using Spearman's correlation test. The significance level was set at 5%. Results: For debris and smear layer removal, WOS and WOP, EIR differed from CON and EDD (p <0.05). Conclusion: Regardless of the instrumentation used, the agitation of the irrigant solution provided better cleanability. These findings reinforce the need for agitation techniques as adjuvants in cleaning root canal systems in mandibular incisors


Subject(s)
Root Canal Irrigants , Microscopy, Electron, Scanning , Root Canal Preparation , Endodontics
2.
Braz. dent. j ; 33(1): 13-21, jan.-fev. 2022. tab, graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1364489

ABSTRACT

Abstract To investigate the genetic association in a sample of replanted teeth, it is necessary to observe the extreme phenotypes, such as, teeth that underwent functional healing and those extracted due to severe external root resorption. Thus, this study aimed to investigate the association of age of the patients, root development, storage media, and polymorphisms in the interleukin 4 (IL4) and interleukin 6 (IL6) genes with teeth that presented extreme outcomes, as functional healing or extraction, in a group whose replantation techniques did not follow the International Association of Dental Traumatology (IADT) 2012 guidelines. Forty-three avulsed and replanted teeth that did not follow IADT 2012 guidelines and underwent functional healing or were extracted were included. Periapical radiographs employed for this study were taken soon after tooth replantation and after 1 year. For genotypic IL4 and IL6 genes analysis, DNA of oral mucosa cells was extracted. Real-time- PCR performed for genotyping polymorphisms in IL4 and IL6 genes. Clinical and genetic variables were analyzed by the Chi-square test and the "Z" test. P values < .05 were considered significant. The results showed that functional healing and extraction were associated with storage media and with the rs2243268 of IL- 4 gene polymorphisms. As conclusion, the C rs2243268 allele of IL4 gene may have a positive relationship with functional healing teeth that were replanted not following the 2012 IADT guidelines. Keeping the tooth dry is associated to a fast loss of avulsed and replanted teeth after 1-year follow-up.


Resumo Para investigar a influência genética em uma amostra de dentes reimplantados, é necessário observar os fenótipos extremos, como os dentes que sofreram cura funcional e os extraídos devido à reabsorção radicular externa severa. Assim, este estudo teve como objetivo investigar a associação da idade dos pacientes, desenvolvimento radicular dos dentes, assim como o meio de transporte até o reimplante e polimorfismos nos genes da interleucina 4 (IL4) e da interleucina 6 (IL6) com dentes que apresentaram cura funcional ou extração, em um grupo cujas técnicas de reimplante não seguiu a International Association of Dental Traumatology (IADT) 2012. Foram incluídos 43 dentes avulsionados e reimplantados que não seguiram as diretrizes do IADT, e tiveram cura funcional ou foram extraídos. As radiografias periapicais utilizadas para este estudo foram feitas logo após o reimplante dentário e após 1 ano. Para a análise genotípica dos genes IL4 e IL6, foi extraído DNA de células da mucosa oral. PCR em tempo real realizou a análise dos polimorfismos dos genes. As variáveis ​​clínicas e genéticas foram analisadas pelos testes Qui-quadrado e "Z". Valores de p <0,05 foram considerados significativos. Os resultados mostraram que a cura ou perda dos dentes está associada ao meio de armazenamento e polimorfismos no gene rs2243268 da IL-4. Como conclusão, o alelo C rs2243268 do gene IL4 pode ter uma relação positiva com a cura functional do dente reimplantado. Manter o dente seco está associado a uma perda rápida de dentes avulsionados e reimplantados que não seguiram o IADT 2012.

3.
Braz. j. oral sci ; 20: e21378, jan.-dez. 2021. tab
Article in English | LILACS, BBO | ID: biblio-1254637

ABSTRACT

Aim: To evaluate the apical extrusion of debris in flat-oval canals, using three reciprocating systems at two different working lengths (WL), 0 mm and 1 mm from the apical foramen. Methods: Ninety mandibular incisors were randomly divided into three groups based on the systems: WaveOne Gold #25.07 (WOG), ProDesign R #25.06 (PDR), and X1 Blue #25.06 (X1B). Extruded debris were collected and dried in pre-weighed Eppendorf tubes. Three consecutive weighings were performed for each tube, and the mean was calculated. If the assumptions of normality and homogeneity of variance were not met, the Kruskal-Wallis test was used to analyze the amount of extruded debris between groups with the same WL, and the Mann-Whitney U test was used for comparison within groups for each WL. Results: All groups had extruded debris, with higher median values occurring at 1 mm. No significant difference regarding the amount of debris extrusion was observed at 0 mm (p>0.05) and 1 mm (p>0.05) between groups. However, within the groups, at different WL, there was greater extrusion at 1 mm (p<0.05), with PDR differing significantly from the other systems (p<0.05). Conclusion: The extrusion of debris occurred regardless of the group, with higher values at 1 mm. However, using PDR at 1 mm from the apical foramen showed the highest values of extrusion


Subject(s)
Root Canal Preparation , Tooth Apex , Dental Pulp Cavity
4.
Braz. dent. j ; 32(6): 107-114, Nov.-Dec. 2021. tab, graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1355836

ABSTRACT

Abstract The purpose of the study was to investigate the association between single nucleotide polymorphisms (SNPs) in genes encoding estrogen receptors (ESR1 and ESR2, respectively) and delayed tooth emergence (DTE). This cross-sectional study was composed of biological unrelated children of both sexes, age ranging from 11 to 13 years old. DTE was defined when the successor primary tooth was still present in the oral cavity after its exfoliation time or the absence of the permanent tooth emergence into the oral cavity. Children were diagnosed with DTE when they had at least one delayed permanent tooth, according to age of exfoliation of each tooth proposed by The American Dental Association. Genomic DNA from saliva was used to evaluate the SNPs in ESR1 (rs9340799 and rs2234693) and ESR2 (rs1256049 and rs4986938) using Real-Time PCR. Chi-square or Fisher exact tests and Logistic Regression adjusted by age and gender were performed. SNP-SNP interaction was accessed by multifactor dimensionality reduction (MDR) analysis also adjusted by gender and age. The established alpha of this study was 5%. Among 537 included children, 296 (55%) were in the "DTE" group and the 241 (45%) were in the "Control" group. Age and gender were not statistically different among the groups (p>0.05). Genotype distribution of the SNPs rs9340799, rs2234693, rs1256049 and rs4986938 were not associated with DTE (p> 0.05). The models elected by MDR were not statistically significant either. Conclusions: The studied SNPs in ESR1 and ESR2 were not associated with permanent DTE.


RESUMO O objetivo do presente estudo foi investigar a associação entre polimorfismos de nucleotídeo único (SNPs) em genes que codificam receptores de estrógeno (ESR1 e ESR2, respectivamente) e o retardo na emergência dentária (DTE). Este estudo transversal foi composto por crianças biológicas não relacionadas de ambos os sexos, com idades entre 11 e 13 anos. O DTE foi definido pela presença do dente decíduo na cavidade bucal após seu tempo e também, quando as crianças apresentaram pelo menos um dente permanente com atraso. O DNA genômico foi usado para avaliar os SNPs em ESR1 (rs9340799 e rs2234693) e ESR2 (rs1256049 e rs4986938) usando PCR em tempo real. Foram realizados testes Qui-quadrado ou exato de Fisher e Regressão Logística ajustados por idade e sexo. A interação SNP-SNP foi acessada pela análise de redução de dimensionalidade multifatorial (MDR), também ajustada por sexo e idade. O alfa de 5% foi estabelecido. Entre 537 crianças incluídas, 296 (55%) estavam no grupo "DTE" e 241 (45%) estavam no grupo "Controle". A idade e o sexo não foram estatisticamente diferentes entre os grupos (p> 0,05). A distribuição de genótipos dos SNPs rs9340799, rs2234693, rs1256049 e rs4986938 não foi associada ao DTE (p> 0,05). Os modelos eleitos pelo MDR também não foram estatisticamente significativos. Conclusões: Os SNPs estudados na ESR1 e ESR2 não foram associados ao DTE na dentição permanente.

5.
Dent. press endod ; 10(3): 88-93, Sept-Dec.2020. Tab
Article in English | LILACS | ID: biblio-1348054

ABSTRACT

Objetivo: O objetivo do presente estudo foi avaliar clinicamente a descoloração da coroa dentária após obturação do canal radicular com diferentes cimentos endodônticos. Métodos: Trinta e dois dentes foram tratados endodonticamente e obturados com AH Plus (AHP), Endofill (END), MTA Fillapex (MTA) ou Sealer 26 (SEA), divididos em oito pacientes por grupo. O registro das cores foi realizado com um espectrofotômetro antes da intervenção (T0 ), aos 30 (T1 ) e aos 90 dias após a intervenção (T2 ). As avaliações foram feitas no centro da coroa dentária e a variação de cor (ΔE) foi calculada por meio da Commission International de l'Eclai- rage (CIE) L*a*b. Um operador, especialista em Endodontia, realizou os procedimentos clínicos. Os dados foram submetidos a medidas repetidas ANOVA e teste de Tukey (Δ=5%). Resultados: Não houve diferença estatisticamente significativa na variação de cores entre os cimentos (AHP ΔE=4,11; END ΔE = 6,34; SEA ΔE = 8,77 e MTA ΔE = 12,15), p>0,05. Porém, houve diferença entre os períodos analisados (T1ΔE= 5,65; T2 ΔE = 10,02). Conclusões: Dentro das limitações deste estudo, todos os cimentos endodônticos causaram alterações cromáticas clinicamente perceptíveis na coroa dentária. No entanto, o AH Plus promoveu menos alterações cromáticas na coroa dentária (AU).


Introduction: The aim of this study was to evaluate the crown discoloration after root canal filling with different endodontic cements clinically. Methods: Thirty-two teeth were endodontically treated and filled with AH Plus (AHP), Endofill (END), MTA Fillapex (MTA), or Sealer 26 (SEA), divided into eight patients per group. Color recording was performed with a spectrophotometer before the intervention (T0 ) and at 30 (T1 ) and 90 days post-intervention (T2 ). The evaluations were done in the center of the dental crown and color variation (ΔE) was calculated by means of the Commission International de IEclairage (CIE) L*a*b. The data were subjected to repeated measures ANOVA and Tukeys test (alpha=5%). Results: There was no statistically significant difference in color variation between the cements (AHP ΔE=4.11; END ΔE=6.34; SEA ΔE=8.77, and MTA ΔE=12.15), p>0.05. However, there was a difference between the periods tested (T1 ΔE=5.65; T2 ΔE=10.02). Conclusions: All tested endodontic cements altered the color of dental crowns (AU).


Subject(s)
Humans , Root Canal Obturation , Tooth Discoloration , Tooth Crown , Spectrophotometry , Analysis of Variance
6.
Braz. dent. j ; 31(4): 417-422, July-Aug. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132312

ABSTRACT

Abstract The aim of this study was to evaluate the effect of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) on bond strength of fiberglass posts in root canals obturated with different endodontic sealers. Seventy-eight mandibular premolars were obturated with three sealers (n=26): Endofill (END), AH Plus (AHP), and Endosequence BC Sealer (EBS). After preparation of the post space, two subgroups were formed according to the cementation of the posts (n=13): with EDC (EDC), and without EDC (control - CON). The specimens were submitted to a pull-out test, failure mode classification, and root canal surface evaluation by scanning electron microscopy after post displacement. Regarding the bond strength, a significant difference between the EDC and CON subgroups occurred only in the END (p=0.001). No difference was detected among the CON subgroups (p=0.339). However, among the EDC subgroups, AHP presented significantly higher values (END versus AHP: p=0.001; AHP versus EBS: p=0.016). Upon classification of failure modes, score 1 (≥ 50% of cement) was the most commonly observed, except for the END + EDC. Remains of endodontic sealers and resin cements were found in the cervical third, but without statistical difference (p=0.269), while in the middle third, difference occurred (p=0.004). In conclusion, EDC decreases bond strength when associated with END sealer, without changing the failure mode between the resin cement and fiberglass post. The best performance was observed when EDC was combined with AHP sealer.


Resumo O objetivo deste estudo foi avaliar o efeito da 1-etil-3- (3-dimetilaminopropil) carbodiimida (EDC) na resistência de união de pinos de fibra de vidro em canais radiculares obturados com diferentes cimentos endodônticos. Setenta e oito pré-molares inferiores foram obturados com três cimentos endodônticos (n=26): Endofill (END), AH Plus (AHP) e Endosequence BC Sealer (EBS). Após o preparo do espaço para pino, dois subgrupos formaram-se conforme a cimentação dos pinos (n=13): com EDC e sem EDC (controle - CON). Os espécimes foram submetidos ao teste pull-out, classificação do modo de falha e avaliação da superfície do canal radicular por microscopia eletrônica de varredura após o deslocamento. Quanto à força de resistência de união, uma diferença estatisticamente significativa ocorreu entre os subgrupos EDC e CON apenas no END (p=0,001). Não foi detectada diferença entre os subgrupos CON (p=0,339). Contudo, no subgrupo EDC, o AHP apresentou maiores valores (END versus AHP: p=0,001; AHP versus EBS: p=0,016). Acerca da classificação dos modos de falha, o escore 1 (≥50% de cimento) foi o mais comumente observado, exceto para END + EDC. Restos de cimentos endodônticos e cimentos resinosos foram encontrados no terço cervical, mas sem diferença estatística (p=0,269), enquanto no terço médio, houve diferença (p=0,004). Em conclusão, o EDC diminui a resistência de união quando associado ao cimento END, sem alterar o modo de falha entre o cimento resinoso e o pino de fibra de vidro. O melhor desempenho foi observado quanto o EDC foi usado com o cimento AHP.


Subject(s)
Post and Core Technique , Dental Bonding , Carbodiimides , Cementation , Resin Cements
7.
Braz. dent. j ; 30(3): 259-265, May-June 2019. tab, graf
Article in English | LILACS | ID: biblio-1011543

ABSTRACT

Abstract The objective was to evaluate the color stability of thin ceramic veneers as a function of the curing mode (with and without pre-cure) of different adhesive systems applied to the internal surface of ceramics. Five adhesive systems (Scotchbond Multi-Purpose, Single Bond Universal, Gluma 2 Bond, Ambar, and Ambar APS) and photo-cured resin cement (Allcem Veneer) were used for cementing 0.6 mm-thick feldspathic veneers (Mark II) on composite resin substrates (Charisma Diamond). The groups, according to adhesive system, were divided into two subgroups (n=10): i) adhesive and resin cement were polymerized separately (pre-cure of the adhesive), ii) adhesive and resin cement were polymerized simultaneously. The CIELab color parameters were determined with a spectrophotometer at 24h (baseline), 7 days, 30 days and 12 months. Data were analyzed by two-way ANOVA and Tukey's test (α=0.05). The results indicated statistically significant differences for adhesive systems and time. The mode of curing of the adhesive system was not statistically significant: pre-cured adhesives (2.6±1.3) and not pre-cured adhesives (2.8±1.4). For the adhesives, ΔE values varied in the following order: Ambar-APS (1.6±0.5) < Scotchbond Multi-Purpose (2.6±1.2) = Gluma 2 Bond (2.7±1.2) = Ambar (2.9±1.2) < Single Bond Universal (3.5±1.5). For time, ΔE values were: 7 days (1.7±0.7), 30 days (3.5±1.2) and 12 months (2.9±1.3). It can be concluded that the different adhesive systems used for cementing thin ceramic veneers influenced the final color of the indirect restorations. The adhesives curing mode did not present a significant effect in the color stability of thin ceramic veneers.


Resumo O objetivo deste estudo foi avaliar a estabilidade de cor de laminados cerâmicos de espessura fina em função do momento de ativação de diferentes sistemas adesivos na superfície interna das cerâmicas. Foram utilizados 5 sistemas adesivos (Scotchbond Multiuso, Single Bond Universal, Gluma 2 Bond, Ambar and Ambar APS) e o cimento resinoso fotoativado (Allcem Veneer) para cimentação de lâminas de cerâmica feldspática (Mark II) com 0,6 mm de espessura, sobre substratos de resina composta (Charisma Diamond). Os grupos, de acordo com o sistema adesivo utilizado, foram divididos em dois subgrupos (n=10): i) adesivo e cimento resinoso foram polimerizados separadamente (polimerização isolada do adesivo), ii) adesivo e cimento resinoso foram polimerizados ao mesmo tempo (polimerização simultânea). Os parâmetros de cor do sistema CIELab foram determinados com um espectrofotômetro nos tempos de 24 h (baseline), 7 dias, 30 dias e 12 meses. Os dados foram analisados por ANOVA a dois fatores e teste de Tukey (α=0,05). Os resultados indicaram diferenças estatísticas significantes para os sistemas adesivos e tempo. O momento da fotoativação do sistema adesivo não foi estatisticamente significante: polimerização prévia (2,6±1,3) e polimerização simultânea (2,8±1,4). Para o sistema adesivo, os valores médios de ΔE variaram na seguinte ordem: Ambar APS (1,6±0,5)<Scotchbond Multi-Purpose (2,6±1,2)=Gluma 2 Bond (2,7±1,2)=Ambar (2,9±1,2)<Single Bond Universal (3,5±1,5). Para o fator tempo o ΔE foi: 7 dias (1,7±0,7), 30 dias (3,5±1,2) e 12 meses (2,9±1,3). Pode-se concluir que os diferentes sistemas adesivos utilizados na cimentação de laminados cerâmicos de espessura fina influenciaram na cor final das restaurações. O momento da fotoativação, isolada ou simultânea ao cimento resinoso, não apresentou efeito significativo na estabilidade de cor dos laminados cerâmicos de espessura fina.


Subject(s)
Dental Cements , Dental Veneers , Materials Testing , Ceramics , Color , Resin Cements , Light-Curing of Dental Adhesives
8.
Braz. j. oral sci ; 18: e191376, jan.-dez. 2019. tab
Article in English | LILACS, BBO | ID: biblio-1087491

ABSTRACT

Aim: The aim was to evaluate the bond strength at the cement/dentin interface in the post space, after specimens were treated with different final irrigation protocols, followed by cementation with a dual resin cement. Methods: Forty-eight extracted uniradicular human premolars were divided into four groups according to the irrigation (n = 12): control with distilled water; 2.5% sodium hypochlorite (NaOCl) + ethylenediaminetetraacetic acid (EDTA); 2.5% NaOCl + passive ultrasonic irrigation (PUI); and 2% chlorhexidine (CHX). The pull-out test was performed. The results were evaluated using ANOVA with Tukey's paired comparisons, with a significance of 5%. Results: When all groups were compared, significant difference occurred (p = 0.006), and in the paired comparison, NaOCl + PUI and CHX differed (p = 0.005). The CHX showed significantly higher adhesive defects between cement and dentin than other groups. Conclusions: The final irrigation protocol for cleaning after preparation for post space directly influences the bond strength at the cement/dentin interface


Subject(s)
Root Canal Irrigants , Sodium Hypochlorite , Smear Layer , Dental Cements , Dental Pins
9.
Braz. j. oral sci ; 18: e191636, jan.-dez. 2019. ilus
Article in English | LILACS, BBO | ID: biblio-1095339

ABSTRACT

Aim: The aim of this study was to evaluate knowledge and attitudes regarding potentially malignant oral lesions and oral cancer among undergraduate dental students with or without training in the oral medicine. Methods: A cross-sectional study was undertaken to assess all undergraduate dental student (1st to 5th year) in two private universities in the state of Paraná, Brazil. A structured questionnaire about knowledge regarding potentially malignant oral lesions, continuing education, and different approaches to diagnosis was administered to dental students with or without training in the oral medicine discipline between May and July 2015. Descriptive statistics were obtained, and the data were analyzed using a chi-square test to compare knowledge in dental students. Results: A total of 662 undergraduate dental students were invited to participate, and the response rate was 97.6% (n = 646). Of the responders, 472 were female (73.1%), 168 were male (26.0%), and 6 did not declare what sex they were (0.9%). Undergraduate dental students who had previously studied oral medicine tended to report that they always perform complete intraoral examination (76.3%) and identified alcohol (87%) and tobacco consumption (97%) and sun exposure (80%) as major risk factors for developing oral cancer. While students who had not yet studied oral medicine poorly identified these factors. Students who had previously studied the discipline did not identify cheilitis actinica (26%) and erythroplakia (32%) as potentially malignant lesions. Only, 32.6% of dental students participate in continuing education during the past year. Conclusions: Dental students trained in the oral medicine discipline exhibited satisfactory knowledge necessary for the prevention and early identification of potentially malignant oral lesions and oral cancer. Continuing education during undergraduate and after academic training is very important


Subject(s)
Humans , Male , Female , Adult , Students, Dental , Mouth Neoplasms , Oral Medicine , Knowledge , Education, Dental, Continuing
10.
Rev. ABENO ; 19(2): 63-70, 2019. tab, graf
Article in Portuguese | LILACS, BBO | ID: biblio-1023160

ABSTRACT

O Objective Structured Clinical Examination (OSCE) é uma avaliação que observa e intervém nas inseguranças dos estudantes em uma condição clínica simulada. Essa forma de avaliar competências, habilidades clínicas, conhecimento, atitudes, comunicação e profissionalismo é considerada uma ferramenta importante no processo de ensino-aprendizagem. Nesse contexto, surgiu a necessidade em implementar, no curso de Odontologia, a avaliação de competência clínica OSCE. O objetivo do estudo foi avaliar a percepção do estudante de Odontologia sobre o método OSCE e seu impacto na formação acadêmica deles. Participaram 34 estudantes do último ano do curso. O instrumento de coleta de dados foi um questionário com opções de respostas ("discordo", "concordo", "concordo parcialmente", "indiferente") que foi respondido voluntariamente. Os dados foram submetidos ao teste Qui-quadrado que comparou as respostas das quatro aplicações da metodologia OSCE durante o ano, com nível de significância de 95% (p<0,05). Em relação à mesma pergunta, a diferença também foi significativa na última avaliação (93,1%; p=0,017). Quanto ao método ter contribuído para o futuro na prática profissional, 93,1% (p=0,042) dos estudantes concordaram, na última avaliação do ano. Pode-se concluir, com base na análise de resposta dos questionários nos quatro bimestres, que a percepção dos estudantes de Odontologia do 5á´¼ ano noturno da Universidade Positivo frente à introdução do método OSCE foi bem aceita e positiva, uma vez que a maioria das respostas indicaram que o método contribuiu significativamente para a formação e ofereceu oportunidade de aprendizagem (AU).


The Objective Structured Clinical Examination (OSCE) is used to detect and intervene in the students' lack of confidence in a simulated clinical condition. The OSCE assesses competences, clinical skills, knowledge, attitude, communication, and professionalism, being considered an important tool in the teachinglearning process. This context raised the need to implement the OSCE clinical competence assessment. The objective of the study was to assess the dentistry student's perception of the OSCE method and its impact on their academic training. This study included thirty-four sênior students. The data were collected using a multiple-choice questionnaire ("disagree", "agree", "partially agree", "indifferent") voluntarily answered. The chi-square test was used to analyze the data by comparing the answers of four OSCE methodology applications during the year, with a 95% (p <0.05) significance level. The difference was also significant regarding the same question in the last assessment (93.1%, p = 0.017). As for the method having contributed to their future professional practice, 93.1% (p = 0.042) of the students agreed in the last assessment of the year. Based on the analysis of questionnaire answers in the four bimesters, we concluded that the perception of the students attending the 5th year of dentistry at Positivo University is that the implementation of the OSCE method was well accepted and positive, since most of the answers indicated that the method significantly contributed to their training and provided learning opportunities (AU).


Subject(s)
Humans , Students, Dental , Health Knowledge, Attitudes, Practice , Clinical Competence , Education, Dental , Educational Measurement/methods , Perception , Brazil , Chi-Square Distribution , Surveys and Questionnaires , Problem-Based Learning
11.
Rev. ABENO ; 18(3): 53-61, jul.-set. 2018. ilus, tab, graf
Article in Portuguese | LILACS, BBO | ID: biblio-964723

ABSTRACT

O objetivo deste trabalho foi descrever um método de controle de esterilização dos materiais utilizados pelos acadêmicos de Odontologia, bem como comparar a sua eficiência frente ao antigo método de controle. Um software foi criado pela Gestão de Tecnologia da Informação da Universidade Positivo, a partir de uma demanda interna do curso, a fim de aprimorar o controle da central de esterilização. O novo método permite que etiquetas com código de barras sejam colocadas externamente em todas as caixas dos alunos, controlando todo o fluxo de entrada e saída de materiais, gerando maior segurança e agilidade do processo de esterilização. Além disso, o sistema permite que o professor tenha acesso à lista de todo o material esterilizado pelo aluno, bem como a data, horário e número da autoclave na qual o material foi esterilizado. Para avaliar a satisfação com o método foram entregues questionários para os estudantes do último ano do curso de Odontologia, contendo perguntas subjetivas sobre o novo e sobre o antigo método de controle. De acordo com o questionário aplicado, demonstrou-se que novo método utilizado diminui os atrasos para atendimento e o número de materiais danificados e perdidos, aumenta a segurança e acelera o tempo para a colocação e retirada dos materiais (p0,05). Na avalição geral, o método também se mostrou melhor quando comparado ao antigo (p0,001). Assim, conclui-se que o método implantado para o controle da esterilização proporcionou maior satisfação e segurança para os alunos (AU).


This study aims to describe a method for controlling the sterilization of materials used by dentistry students and to compare its efficiency against the former control method. A software was developed by the Information Technology Management Department at the Positivo University, motivated by an internal demand to improve the sterilizing department control. The new method allows the placement of labels with bar codes on the external surface of the students' boxes, controls the entire entrance-and-exit flow of materials and provides greater safety and agility for the sterilization process. Furthermore, the system allows professors to access the list of materials sterilized by students, and the date, time, and number of the autoclave in which the material was sterilized. Questionnaires including subjective questions about the new and former method of control were administered to final-year dentistry students to evaluate their satisfaction toward the methods. The new method decreases delays in patient care and the number of damaged and lost materials, increases safety, and reduces the time spent in material drop-off and withdrawal (p  better when compared to the former one (p  t the method implemented to control sterilization resulted in greater student satisfaction and provided greater safety (AU).


Subject(s)
Humans , Male , Female , Software , Brazil , Sterilization/methods , Containment of Biohazards/methods , Education, Dental , Software Validation , Surveys and Questionnaires , Technology, Dental , Statistics, Nonparametric , Consumer Behavior , Information Technology
12.
Braz. dent. j ; 29(3): 254-260, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-951553

ABSTRACT

Abstract In spite of advances in root canal therapy and better knowledge of pulpal and periapical inflammation, up 40% of endodontic patients report varying degrees of pain. The aim of this present study was to compare the effect of single preoperative dose of ibuprofen or dexamethasone on post-endodontic pain. Sixty volunteers were divided into three groups (n=20 per group): PL, placebo; IB, 400 mg of ibuprofen; and DE, 8 mg of dexamethasone. The primary outcome was the post-endodontic pain intensity measured with a numerical rating scale (4, 8, 12, 24, and 48 h). Secondary outcomes included number of anesthetic cartridges used and consumption of rescue medication. Data were analyzed by one-way ANOVA, chi-square and Kruskal-Wallis tests. There was no significant difference among groups (p>0.05) considering the pain intensity. Only 37% of IB group patients and 28% of DE group patients used some rescue medication. On the other hand, 74% of PL group patients mentioned the consumption of rescue medication; PL group had a statistically significant difference (p<0.05) in comparison with IB and DE groups. The number of anesthetic cartridges used had no statistically significant difference among the groups (p>0.05). Significant differences were not found in the reduction of pain intensity and the number of anesthetic cartridges used. Considering the consumption of rescue medication (secondary outcome), preoperative administration of Ibuprofen or dexamethasone reduces post-endodontic pain and discomfort in comparison with a placebo. Premedication with anti-inflammatory drugs drugs could be contributed to control of the post-endodontic pain, mainly in patients more sensible for pain.


Resumo Apesar dos avanços no tratamento do canal radicular e melhor conhecimento da inflamação pulpar e periapical, 40% dos pacientes submetidos ao tratamento de endodôntico relatam diferentes graus de dor. O objetivo deste estudo foi comparar o efeito pré-operatório (dose única) de ibuprofeno ou dexametasona na dor pós-endodôntica. Sessenta voluntários foram divididos em três grupos (n=20 por grupo): PL, placebo; IB, 400 mg de ibuprofeno; e DE, 8 mg de dexametasona. O desfecho primário foi a intensidade da dor pós-endodôntica medida com uma escala numérica (4, 8, 12, 24 e 48 h). Os desfechos secundários incluíram o número de tubetes anestésicos utilizados e o consumo de medicação resgate. Os dados foram analisados com os testes ANOVA, qui-quadrado e Kruskal-Wallis. Não houve diferença entre os grupos (p>0,05) considerando a intensidade da dor. Apenas 37% dos pacientes do grupo IB e 28% do grupo DE utilizaram alguma medicação resgate. Por outro lado, 74% dos pacientes do grupo PL mencionaram o consumo de medicação resgate; o grupo PL apresentou diferença significativa (p<0,05) em comparação com os grupos IB e DE. O número de tubetes anestésicos utilizados não apresentou diferença significativa entre os grupos (p>0,05). Não encontramos diferença significativa na redução da intensidade da dor e no número de tubetes anestésicos utilizados. Considerando o consumo de medicação resgate (desfecho secundário), a administração pré-operatória de ibuprofeno ou dexametasona reduz a dor pós-endodôntica e o desconforto em comparação com placebo. A pré-medicação com anti-inflamatórios poderia contribuir para o controle da dor pós-endodôntica, principalmente em pacientes mais sensíveis à dor.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Young Adult , Dexamethasone/administration & dosage , Dexamethasone/therapeutic use , Anti-Inflammatory Agents, Non-Steroidal/administration & dosage , Ibuprofen/administration & dosage , Anti-Inflammatory Agents/administration & dosage , Anti-Inflammatory Agents/therapeutic use , Pain, Postoperative/drug therapy , Placebos , Premedication , Root Canal Therapy/adverse effects , Anti-Inflammatory Agents, Non-Steroidal/therapeutic use , Ibuprofen/therapeutic use , Administration, Oral
13.
Rev. cuba. estomatol ; 55(1): 26-33, ene.-mar. 2018.
Article in Portuguese | LILACS | ID: biblio-960398

ABSTRACT

Objetivo: avaliar a associação entre doença periodontal, parto prematuro e recém-nascidos de baixo peso, em um grupo de mulheres no município de Curitiba, PR, Brasil. Métodos: no presente caso-controle foram avaliadas 51 mães, com idade entre 16 e 40 anos, divididas em dois grupos: as que tiveram parto prematuro, sendo os recém-nascidos de baixo peso; e as que não tiveram parto prematuro também com recém-nascidos de baixo peso. Foram coletados dados das mães e dos recém-nascidos por meio de questionários e análise de registros médicos. O exame periodontal foi realizado em seis sítios de cada dente presente, com exceção dos terceiros molares. Resultados: foi encontrado que 82,4 porcento das mulheres tiveram partos normais, 25,5 porcento das mães tiveram seus bebês prematuramente, 19,6 porcento dos bebês nasceram com peso inferior a 2 500 g e 5,9 porcento das mulheres tinham doença periodontal. Conclusão: nesta amostra não foi identificada associação entre doença periodontal, parto prematuro e recém-nascidos de baixo peso(AU)


Objetivo: evaluar la asociación entre la enfermedad periodontal, los nacimientos prematuros y recién nacidos con bajo peso en un grupo de mujeres en la ciudad de Curitiba, PR, Brasil. Métodos: en estudio de casos y controles se evaluaron 51 madres, de edades comprendidas entre los 16 y 40 años, divididas en dos grupos: las que habían tenido un parto prematuro y con bajo peso y las que no habían tenido un parto prematuro pero sí bebés con bajo peso. Se recogieron datos de las madres y los recién nacidos a través de cuestionarios y análisis de los registros médicos. El examen periodontal se llevó a cabo en seis sitios de cada diente presente, excepto los terceros molares. Resultados: se encontró que 82,4 por ciento de las mujeres tuvieron un parto normal, el 25,5 pr ciento de las madres tenían a sus bebés antes de tiempo, el 19,6 por ciento de los bebés que nacieron con un peso inferior a 2 500 g, y 5,9 por ciento de las mujeres tenían enfermedad periodontal. Conclusiones: en esta muestra no se identificó ninguna asociación entre la enfermedad periodontal y los partos prematuros y el bajo peso al nacer(AU)


Objective: evaluate the association between periodontal disease, preterm births and low birth weight neonates in a group of women from the city of Curitiba, PR, Brazil. Methods: in this case-control study, an evaluation was conducted of 51 mothers aged 16-40 years divided into two groups: those with a preterm delivery and low birth weight babies, and those without a preterm delivery but with low birth weight babies. Data about the mothers and the neonates were collected via questionnaires and medical record analysis. Periodontal examination was performed at six sites of each tooth present, except for the third molars. Results: it was found that 82.4 percent of the women had had a normal delivery and 25.5 percent a preterm delivery. 19.6 percent of the babies weighed less than 2 500 g at birth, and 5.9 percent of the women had periodontal disease. Conclusions: no association was found in the sample between periodontal disease and preterm delivery and low birth weight(AU)


Subject(s)
Humans , Female , Pregnancy , Infant, Newborn , Periodontal Diseases/epidemiology , Infant, Low Birth Weight/physiology , Data Collection/statistics & numerical data , Obstetric Labor, Premature/physiopathology , Case-Control Studies , Medical Records/statistics & numerical data , Surveys and Questionnaires/statistics & numerical data
14.
Braz. oral res. (Online) ; 32(supl.1): e72, 2018. tab, graf
Article in English | LILACS | ID: biblio-974467

ABSTRACT

Abstract: Genetics is an emerging topic in endodontic research focusing on the host response regarding the pathogenesis of apical periodontitis (AP). A number of genetic epidemiological studies carried out by many investigators worldwide have shown evidence of an association between certain candidate genes and AP. Some studies have been conducted on knockout mice with a deficiency in certain proteins, leading to more or less severe AP, and thus suggesting a pivotal role of these genes in AP pathogenesis. Other research has evaluated the association between genetic polymorphisms in humans with different AP aspects; these studies pointed out that genetic polymorphisms in some candidate genes are involved in inter-individual variations in their response to AP. Therefore, the objective of this report was to provide an updated overview of the genes involved in AP pathogenesis, with a focus on the most relevant candidate genes.


Subject(s)
Humans , Animals , Periapical Periodontitis/genetics , Polymorphism, Genetic , Genetic Association Studies , Periapical Periodontitis/pathology , Severity of Illness Index , Risk Factors
15.
Braz. j. oral sci ; 17: e18483, 2018. tab
Article in English | LILACS, BBO | ID: biblio-970525

ABSTRACT

Aim: To evaluate crown and root discoloration promoted by different endodontic sealers after root canal filling. Methods: Eighty bovine incisors were prepared and filled with: Endofill, Sealer 26, AH Plus, and MTA Fillapex. Color was recorded using a spectrophotometer before endodontic treatment (T0) and at 24 hours (T1), seven days (T2), 30 days (T3), and 90 days (T4) after treatment. Analyses were performed on the middle and cervical regions of the crown, and on the cervical third of the root, immediately below the cementoenamel junction. The color alterations (ΔE) were calculated using Commission International de I'Eclairage (CIE) L*a*b parameters, and data were analyzed by analysis of variance (ANOVA) and Tukey's test (p<0.05). Results: All sealers induced color alterations. Sealer 26 resulted in the smallest changes in color (E = 5.32). The other materials did not present statistical differences (AH Plus E = 6.98; MTA Fillapex E = 6.88; Endofill E = 6.41). Of the three regions analyzed, the largest discoloration was observed at the cervical third of the root (E=10.67). In terms of time, the largest ΔE values (E=7.72) were observed at T4. Color changes at T1 (E=5.88), T2 (E=6.10), and T3 (E=5.89) were statistically similar. Conclusions: All endodontic sealers promoted discoloration on the tooth crown and root


Subject(s)
Animals , Cattle , Root Canal Filling Materials , Tooth Discoloration , Tooth Crown , Endodontics
16.
Braz. dent. j ; 28(3): 380-384, May-June 2017. tab, graf
Article in English | LILACS | ID: biblio-888653

ABSTRACT

Abstract The influence of root canal filling techniques on the penetration of AH Plus into dentinal tubules was evaluated using confocal laser scanning microscopy (CLSM) and the impact on the bond strength of the filling material on the root dentin was evaluated using the push-out test. Roots of the maxillary central incisors (n=40) were prepared with ProTaper Universal and assigned to four groups: lateral condensation, vertical compaction, modified Tagger hybrid and single cone. After root canal filling with gutta-percha and AH Plus, along with the addition of 0.01% fluorescein, the roots were cut into 2-mm slices. CLSM was performed on the first slice of each root third, followed by the push-out test. The second slice was analyzed under SEM. ANOVA demonstrated a statistically significant difference between the root canal filling techniques and the root thirds (p<0.05). For percent penetration, Tukey's test showed that the vertical compaction (91.77±13.51), lateral condensation (89.18±10.91) and modified Tagger hybrid (87.53±15.42) presented the highest values, which significantly differed (p<0.05) from those of the single cone (78.19±22.46). For bond strength (MPa), lateral condensation (3.42±0.54) and vertical compaction (3.47±0.53) had the highest values (p<0.05), while the modified Tagger hybrid (2.19±0.41) and single cone (0.54±0.21) had the lowest. In conclusion, the lateral condensation, vertical compaction and Modified Tagger's hybrid techniques resulted in greater penetration and bond strength to the intra-radicular dentin.


Resumo Avaliou-se a influência da técnica obturadora na penetração do cimento AH Plus nos túbulos dentinários, por meio de microscopia confocal de varredura a laser (MCVL), e o impacto na resistência de união do material obturador à dentina, por meio do teste de push out. Raízes de incisivos centrais superiores (n=40) foram preparadas com ProTaper Universal e distribuídas em 4 grupos: Condensação lateral, Compactação vertical, Híbrida de Tagger Modificada e Cone único. Após obturação com guta percha e AH Plus acrescido de fluoresceína 0,01%, as raízes foram seccionadas em slices de 2,0 mm. O primeiro slice de cada terço foi submetido à MCVL e, posteriormente, ao teste de push out. O segundo slice foi analisado em MEV. ANOVA demonstrou diferença estatisticamente significante para as técnicas obturadoras e terços radiculares (p<0,05). Para o percentual de penetração, Tukey evidenciou que compactação vertical (91,77±13,51), Condensação lateral (89,18±10,91) e Híbrida de Tagger Modificada (87,53±15,42) apresentaram os maiores valores, estatisticamente diferentes (p<0,05) da Cone único (78,19±22,46). Na resistência de união (MPa), Condensação lateral (3,42±0,54) e Compactação vertical (3,47±0,53) obtiveram os maiores valores, diferentes (p<0,05) da Híbrida de Tagger Modificada (2,19±0,41) e da Cone único (0,54±0,21), que teve os menores valores. Concluiu-se que as técnicas obturadoras Condensação lateral, Compactação vertical e Híbrida de Tagger Modificada propiciaram maior penetração e resistência de união à dentina intrarradicular.


Subject(s)
Humans , Dental Bonding/methods , Dentin/chemistry , Root Canal Filling Materials/chemistry , Root Canal Therapy/methods , Microscopy, Confocal , Microscopy, Electron, Scanning
17.
Braz. oral res. (Online) ; 31: e114, 2017. graf
Article in English | LILACS | ID: biblio-952083

ABSTRACT

Abstract: The aim of this study was to compare two irrigation techniques and four devices for endodontic sealer placement into the dentinal tubules. Ninety-nine single-rooted human teeth were instrumented and allocated to either the control (CO) (n=11) or experimental groups according to the irrigation method: syringe and NaveTip needle (NT) (n=44), and EndoActivator (EA) (n=44). These groups were subdivided according to sealer placement into K-File (KF), lentulo spiral (LS), Easy Clean (EC), and EndoActivator (EA) subgroups. Moreover, the distances of 5 mm and 2 mm from the apex were analyzed. The teeth were obturated with AH Plus and GuttaCore X3. Analyses were performed by scanning electron microscopy associated to cathodoluminescence. The percentage and maximum depth of sealer penetration were measured. Data were evaluated by three-way analysis of variance (ANOVA) and Games-Howell test (p<0.05). EA was superior to NT in percentage of sealer penetration. EC was significantly superior to EA (subgroup) for sealer penetration, and both improved the percentage of sealer penetration when compared to LS. Better sealer penetration was observed at the distance of 5 mm from the apex. Sealer penetration into the dentinal tubules was significantly improved by sonic irrigant activation.


Subject(s)
Humans , Root Canal Filling Materials/chemistry , Root Canal Irrigants/chemistry , Root Canal Obturation/methods , Root Canal Preparation/methods , Dentin/drug effects , Therapeutic Irrigation/methods , Rhodamines , Root Canal Filling Materials/therapeutic use , Root Canal Irrigants/therapeutic use , Root Canal Obturation/instrumentation , Materials Testing , Microscopy, Electron, Scanning , Reproducibility of Results , Analysis of Variance , Microscopy, Confocal , Root Canal Preparation/instrumentation , Dental Pulp Cavity/drug effects , Dental Pulp Cavity/ultrastructure , Dentin/ultrastructure , Epoxy Resins/therapeutic use , Epoxy Resins/chemistry , Therapeutic Irrigation/instrumentation
18.
Rev. ABENO ; 17(3): 55-65, 2017. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-882808

ABSTRACT

A importância de um banco de dentes humanos em uma instituição de se justifica e se mostra vantajosa, uma vez que permite a máxima aproximação da realidade ao se trabalhar com o órgão extraído. Este estudo teve o propósito de avaliar métodos de manutenção da esterilidade do órgão dental humano extraído armazenado. Foram utilizados 72 dentes incisivos humanos extraídos, obtidos em clínicas de graduação e de pós-graduação da Universidade Positivo, Curitiba, PR, Brasil. Os elementos dentários foram cedidos pelos pacientes, por meio de termo de doação devidamente assinado. Após os procedimentos de limpeza e de desinfecção, 36 dentes foram esterilizados em autoclave e 36 foram somente limpos. Os dentes foram, então, armazenados em recipientes contendo o método (autoclavagem ou limpeza) ou a solução de escolha, por um período de 15 e 120 dias. Testes microbiológicos foram realizados a fim de determinar qual método ou solução de armazenamento promove a manutenção da esterilidade no tempo determinado. Melhores desempenhos foram observados quando as amostras foram armazenadas em Incidin Extra N®, formol e álcool, mesmo para os dentes não autoclavados. As substâncias em análise nos períodos propostos se mostraram capazes de impedir o crescimento microbiano. Este experimento poderá auxiliar o desenvolvimento de um protocolo de processamento e de administração do órgão dental humano extraído em um banco de dentes (AU).


The importance of a human teeth bank in an institution is justified and it is advantageous, since it allows the maximum approximation of reality when working with the extracted organ. This study aimed to evaluate methods for maintaining the sterility of extracted human teeth during storage. A total of 72 human incisors extracted in the undergraduate and graduate clinics of Universidade Positivo (Curitiba, PR, Brazil) were used in this study. The teeth were provided by patients, who signed a donation form. After all teeth were subjected to cleaning and disinfection procedures, 36 teeth were autoclaved as well. Teeth were then stored in various solutions for periods of 15 and 120 days. Microbiological tests were conducted to determine which method or storage promoted maintenance of sterility. Better results were obtained for teeth - including autoclaved teeth - stored in Incidin Extra N®, formaldehyde, and alcohol. The solutions analyzed over the proposed time periods have been shown to prevent microbial growth. Results of this study will aid in developing a protocol of processing for extracted human dental teeth to be stored in a tooth bank (AU).


Subject(s)
Humans , Male , Female , Containment of Biohazards/methods , Dentistry , Incisor , Sterilization , Tissue Banks , Brazil , Infection Control
19.
Stomatos ; 22(42)20161214.
Article in English | LILACS-Express | LILACS | ID: biblio-827262
20.
Stomatos ; 22(42)20161214.
Article in English | LILACS-Express | LILACS | ID: biblio-827263
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