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1.
Arq. odontol ; 55: 1-7, jan.-dez. 2019. tab
Article in Portuguese | BBO, LILACS | ID: biblio-1051703

ABSTRACT

Objetivo: O objetivo deste estudo foi avaliar a percepção de boca seca em uma amostra de pacientes, de uma clínica de um curso de odontologia, usuários de próteses totais. Métodos: Fizeram parte do estudo 80 pacientes, que responderam a um questionário com 12 questões que caracterizavam o participante e abordava a sensação de boca seca e como a pessoa a percebia. O questionário foi pré-testado antes de sua aplicação definitiva. A análise estatística foi realizada por meio do Teste Exato de Fischer para identificar a associação da xerostomia com as variáveis independentes, com nível de significância de 5%. Resultados: Os participantes do estudo tinham, em média, 62,3 anos de idade e 55% eram do gênero feminino. Metade (50,0%) dos participantes percebiam a boca seca e 72,5% apresentavam alguma doença crônica, principalmente a hipertensão (36,1%) e a diabetes (17,1%) e estas doenças se refletiam na alta (78,8%) utilização de medicamentos de uso contínuo. Apresentavam hábitos bucais nocivos 38,8% dos participantes, principalmente o tabagismo e o bruxismo. A sensação de boca seca foi associada ao gênero, a presença de mau hálito, ao uso de medicamentos contínuos e a sensação de ardência na boca. Conclusão: A partir dos dados coletados pode-se concluir que a xerostomia foi frequente na população estudada e deve ter impacto negativo na qualidade de vida dessas pessoas. (AU)


Aim: The purpose of this study was to assess xerostomia (dry mouth) in a sample of patients who received dental care at a dentistry course clinic and who used dentures. Methods: This study included 80 patients, who answered a questionnaire with 12 questions that characterized the participant and addressed the sensation of dry mouth and how the person perceived it. The questionnaire was pre-tested before its final application. The statistical analyses were performed to identify the differences between the groups, establishing a significance level of 5% and applying the Fisher's exact test. Results: The participants of the study were, on average, 62.3 years of age, 55% of whom were female. Half (50.0%) of the participants perceived dry mouth and 72.5% had some form of chronic disease, mainly hypertension (36.1%) and diabetes (17.1%). These diseases are reflected in the high (78.8%) intake of continuous use medications. This study found that 38.8% of the participants presented harmful oral hygiene habits, mainly smoking and bruxism. The sensation of dry mouth was associated with gender, the presence of bad breath, the intake of continuous use medications, and a burning sensation in the mouth. Conclusion: From the collected data, it is possible to conclude that xerostomia (dry mouth) was frequent in the studied population, most likely causing a negative impact on these people's quality of life. (AU)


Subject(s)
Saliva , Xerostomia , Dental Prosthesis , Adult , Denture, Complete , Cross-Sectional Studies , Surveys and Questionnaires
2.
Braz. dent. j ; 27(4): 430-435, July-Aug. 2016. tab, graf
Article in English | LILACS | ID: lil-794606

ABSTRACT

Abstract The aim of this study was to assess the influence of sealer and light-curing unit on regional bond strength of resin composite to the weakened roots. Ninety roots of incisors were experimentally weakened, subjected to biomechanical preparation and filled with either Endofill, AH Plus or MTA Fillapex The roots were desobturated e reinforced with resin composite and fiber post light-activated with one of the light sources: halogen at 600 mW/ cm2 (QTH-600), LED at 800 mW/ cm2 (LED-800) and LED at 1500 mW/ cm2 (LED-1500). The roots were sectioned in slices from cervical, middle and apical root-reinforcement regions and analyzed by push out test, scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). Bond strength data were analyzed using three-way ANOVA and Tukey´s test (α=0.05). Specimens filled with AH Plus had higher bond strength, followed by MTA Fillapex and Endofill (p<0.05). For light-curing unit, LED-1500 presented superior bond strength than LED-800, which was higher than QTH-600 (p<0.05). The cervical region had the greatest mean values (p<0.05) while apical part showed the lowest bond strength (p<0.05). CLMS revealed remaining filling material in the dentinal tubules for all groups. The eugenol-containing sealer (Endofill) compromised the push-out bond strength of composite resin to the root dentin. Bond strength was favored in the cervical region, and when LED-1500 was used.


Resumo O objetivo neste estudo foi avaliar a influência do cimento endodôntico e da fonte de luz fotoativadora na resistência de união (RU) regional da resina composta às raízes fragilizadas. Noventa raízes de incisivos foram experimentalmente fragilizados, submetidos ao preparo biomecânico e obturadas com Endofill, AH Plus ou MTA Fillapex. Os canais foram desobturados e reforçados com pinos de fibra de vidro e resina composta fotoativada com uma das fontes de luz: halógena a 600 mW/cm2 (QTH-600), diodo emissor de luz a 800 mW/cm2 (LED-800) e LED a 1500 mW/cm2 (LED-1500). As raízes foram seccionadas em slices provenientes dos terços cervical, médio e apical das regiões da raiz reforçada e analisadas por meio do teste de push out, microscopia eletrônica de varredura (MEV) e microscopia confocal de varredura a laser (MCVL). Os dados de resistência de união foram analisados por ANOVA a três critérios e teste de Tukey (α=0,05). Os espécimes obturados com AH Plus apresentaram maior resistência de união, seguido do MTA Fillapex e do Endofill (p<0,05). Para fonte de luz fotoativadora, LED-1500 apresentou resistência de união superior ao LED-800 que foi maior que QTH-600 (p<0,05). A região cervical obteve as maiores médias (p<0,05), enquanto que a região apical apresentou a menor resistência de união (p<0,05). MCVL revelou remanescente de material endodôntico nos túbulos dentinários para todos os grupos. O cimento contendo eugenol (Endofill) comprometeu a resistência de união da resina composta à dentina radicular. A resistência de união foi favorecida na região cervical, e quando o LED-1500 foi empregado.


Subject(s)
Humans , Composite Resins , Materials Testing , Tooth Root
3.
Braz. dent. j ; 25(6): 519-523, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-732263

ABSTRACT

Surface treatment of dentin before the bleaching procedure may affect its permeability and influence the bond strength of restorative materials. This study evaluated the influence of surface treatment before the bleaching on shear bond strength (SBT) of restorative materials to intracoronal dentin. Dentin slabs were subjected to surface treatment: no bleaching (control - CON), no surface treatment + bleaching (HP), 37% phosphoric acid + bleaching (PA) and Er:YAG laser + bleaching (L). After the bleaching procedure, specimens (n=10) were restored with: microhybrid composite resin (MH), flowable composite resin (F), and resin-modified glass-ionomer cement (RMGIC). The shear test was carried out. ANOVA and Tukey's test (α=0.05) showed significant difference for surface treatment and restorative materials (p<0.05). CON presented higher STB and was statistically different from HP (p<0.05). PA and L showed intermediate values and were statistically similar to CON and HP (p>0.05). STB for MH and F were higher than RMGIC (p<0.05), and did not differ from each other (p>0.05). The surface treatments with phosphoric acid and Er:YAG laser before the bleaching procedure provided shear bond strength at the same level of unbleached dentin and the composite resins presented superior bond strength to the intracoronal dentin.


O tratamento superficial da dentina previamente ao clareamento pode afetar a sua permeabilidade e influenciar a resistência de união de materiais restaurados. Este estudo avaliou a influência do tratamento superficial antes do clareamento na resistência ao cisalhamento (RC) de materiais restauradores à dentina intracoronária. Fragmentos de dentina foram submetidos ao tratamento de superfície: não clareadas (controle - CON), sem tratamento de superfície + clareamento (HP), ácido fosfórico 37% + clareamento (AF), e laser Er:YAG + clareamento (L). Após o procedimento clareador, os espécimes foram restaurados com (n=10): resina composta micro-híbrida (MH), resina composta fluida (F), e cimento de ionômero de vidro modificado por resina (CIVMR). O teste de cisalhamento foi realizado. ANOVA e teste de Tukey (α=0,05) mostraram diferença significante para tratamento superficial e material restaurador (p<0,05). O grupo controle apresentou maior resistência de união e foi estatisticamente diferente de HP (p<0,05). AF e L mostraram valores intermediários e foram similares ao CON e HP (p>0,05). A resistência de união para MH e F foi maior que CIVMR (p<0,05), e não diferiram entre si (p>0,05). O tratamento da superfície dentinária com ácido fosfórico e laser Er:YAG previamente ao clareamento promoveu resistência de união ao nível da dentina não clareada e a adesão à dentina intracoronária foi superior com as resinas compostas.


Subject(s)
Female , Humans , Male , Fragile X Syndrome/diagnosis , Sex Chromosome Aberrations/diagnosis , Chromosome Aberrations , Chromosome Banding , Developmental Disabilities/etiology , Developmental Disabilities/genetics , Fragile X Syndrome/genetics
4.
RSBO (Impr.) ; 11(4): 417-422, Oct.-Dec. 2014.
Article in English | LILACS | ID: lil-778312

ABSTRACT

Introduction: The ultra-thin porcelain laminates provide the esthetic harmony to the smile compromised by the presence of diastema between maxillary incisors. Objective: To report the dental aesthetic recovery with ultra-thin porcelain laminates, so-called "contact lenses". Case report: Patient sought treatment reporting presence of diastema between the anterior teeth. After the clinical examination, impressions were made to obtain study models and diagnostic wax-up. Home bleaching was conducted using 10% carbamide peroxide for 21 days. Next, the mock-up with bisacrylic self-curing composite resin and the functional impression were conducted. For cementation, dental surfaces were etched with 37% phosphoric acid followed by applying the adhesive system. The resin cement was inserted within internal part of the contact lenses previously treated with hydrof luoric acid and silane, and the prosthetic samples were positioned over the labial surfaces of the anterior teeth. After light-curing, the finishing procedure was performed. Conclusion: Ultra-thin porcelain laminates (contact lenses) were viable, efficient, and conservative procedures for recovering dental esthetic, with no need of invasive procedures.

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