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1.
J. appl. oral sci ; 31: e20220323, 2023. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1421903

ABSTRACT

Abstract Objectives This is a double-blind, split-mouth, randomized clinical study that aims to evaluate the influence of bulk-fill composite packaging presented in syringes (BSy) and capsules (BCa), and the effect of selective enamel etching (SEE) on the clinical performance of class I and II bulk-fill resin composite restorations after 24 months. Methodology A total of 295 class I or class II restorations were performed on 70 patients. One universal adhesive was applied in all restorations. SEE was used in 148 restorations and self-etching mode (SET) in 147 restorations. After the adhesive application, cavities were restored with Filtek Bulk-fill Posterior Restorative in syringes (BSy), Filtek One Bulk-fill in capsules (BCa), or Filtek Supreme Ultra in syringes with the incremental technique (In). All restorations were evaluated using the FDI criteria after one week and after six, 12, and 24 months. Kaplan-Meier survival analysis and Pearson's Chi-square test were used (α=0.05) for statistical analysis. Results After 24 months, 62 patients were evaluated and four restorations were lost due to fracture (one for SEEBSy, two for SEEIn, and one for SETIn). No significant differences in the fracture and retention rate were found between groups (p>0.05). SEE showed significantly fewer marginal adaptation defects than SET (p<0.05). BCa and BSy groups showed fewer marginal discrepancies compared to In (p<0.05). Restorations performed with BCa showed less color mismatch than BSy or In (p<0.05). Conclusion Although all restorations exhibited satisfactory clinical performance after 24 months of clinical service, the clinical behavior of class I and II restorations' improved when performed with a bulk-fill composite in capsules, mainly when associated with a universal adhesive applied with SEE.

2.
Braz. oral res. (Online) ; 33: e089, 2019. tab, graf
Article in English | LILACS | ID: biblio-1039299

ABSTRACT

Abstract The objectives of this double-blind randomized clinical trial were to compare (a) the clinical times and (b) the occurrence and severity of postoperative sensitivity, of posterior restoration that used a universal adhesive, in a self-etch or selective enamel-etching technique, along with incremental or bulk-fill composites (presented in syringes or capsules). A total of 295 posterior restorations were placed according to the following groups: SETB - self-etch/bulk-fill in syringe; SETC - self-etch/bulk-fill in capsules; SETI - self-etch/incremental; SEEB - selective enamel-etching/bulk-fill in syringe; SEEC - selective enamel-etching/bulk-fill in capsules; and SEEI - selective enamel-etching/incremental. Clinical time was assessed by a reason (s/mm3) between the total volume of resin inserted and the total time required to perform the restorations. Postoperative sensitivity was evaluated using two scales (Numeric Rating Scale and Visual Analogue Scale). Mean clinical time results, analyzed by Wald's Chi-square, showed significant statistical differences among all groups (p<0.001), indicating that the restorative strategy affected the time required for the restoration. A generalized estimating equation model statistical analysis, performed to compare postoperative sensitivity, showed that neither the restorative technique, the adhesive strategy nor the presentation mode of the bulk-fill composite affected the overall risk of postoperative sensitivity (4.06 [2.22-6.81]). The use of bulk-fill composite, presented in capsules or syringes, is less time consuming and does not increase the risk or intensity of postoperative sensitivity relative to the traditional incremental technique.


Subject(s)
Humans , Male , Female , Composite Resins/therapeutic use , Dental Restoration, Permanent/adverse effects , Dentin Sensitivity/etiology , Postoperative Complications/etiology , Reference Values , Syringes , Time Factors , Capsules , Double-Blind Method , Reproducibility of Results , Risk Factors , Treatment Outcome
4.
Rev. flum. odontol ; 16(34): 55-59, jul.-dez. 2010. tab
Article in Portuguese | LILACS, BBO | ID: lil-605632

ABSTRACT

Com o objetivo de comparar as principais características de três materiais elastoméricos (Silicona de condensação, Silicona de adição e Poliéter) foi feita uma revisão de literatura. A conclusão foi que a seleção do melhor material para moldagem deve ser baseada nos conhecimentos de suas propriedades físico-químicas, que o sucesso da impressão também depende da habilidade clínica do operador e que a melhor moldagem será obtida quando o profissional dominar o material, controlando todas as possíveis causas de alteração dimensional.


In order to compare the main features of three elastomeric materials (condensation silicone, addition silicone and polyether) was a review of literature. The conclusion was that the selection of the best material for molding must be based on knowledge of their physico-chemical properties, that the success of the print also depends on the clinical skill of the operator and that the best molding Will be obtained when the Professional máster the material, controlling all possible causes of change dimensional.


Subject(s)
Dental Impression Materials , Dental Prosthesis
5.
Rev. flum. odontol ; 16(33): 40-43, jan.-jun. 2010. ilus
Article in Portuguese | LILACS, BBO | ID: lil-589638

ABSTRACT

Este estudo teve como objetivo avaliar a resistência flexural de barras longilíneas confeccionadas no Sistema Empress II, com o intuito de extrapolar os resultados para o planejamento de próteses parciais fixas sem metal. Variou-se a extensão e a proporção altura/largura das barras de teste. Os espécimes foram levados à máquina de ensaios universal, onde foi aplicada uma força contínua. Os valores obtidos foram analisados e demonstraram diferença estatisticamente significante entre os grupos testados, indicando que ao aumentar-se a extensão da área correspondente ao(s) pôntico(s) de 0,8mm para 1,6mm cria-se maior susceptibilidade à fratura. Ficou também demonstrado que a altura da conexão é mais relevante que a largura, quando a extensão corresponde a 0,8mm (ANOVA 0,5%).


The purpose of this study was to evaluate the flexural resistance of logitudinal bars of IPS Empress II, with the aim to extrapolate the results to dental bridges planning. It was obtained bars with different extensions and lengths, with standardized width. The specimens were carried to a universal testing machine, when was applied a continuous force. The values obtained were analyzed and showed significant statistical difference between the tested groups, indicating that with an increase of the surface extension related to the pontic(s) from 0,8mm to 1,6mm, it creates more susceptibility to fracture. It also demonstrated that the connection height its more relevant than the width, when the extension corresponds to 0,8mm (ANOVA 0,5%).


Subject(s)
Ceramics , Dental Materials , Denture, Partial, Fixed
6.
Rev. flum. odontol ; 15(31): 28-32, jan.-jun. 2009. ilus
Article in Portuguese | LILACS, BBO | ID: lil-589624

ABSTRACT

A evolução das cerâmicas odontológicas permitiu a confecção de restaurações que aliam excelência estética a boas propriedades físicas, podendo ser indicadas em diversas situações clínicas, recuperando a harmonia do sorriso, sem prejuízo da resistência e da durabilidade. Sendo assim, este trabalho consiste no relato de um caso clínico onde a cerâmica odontológica do Sistema Procera All Ceram foi utilizada visando a reabilitação estética em dois incisivos superiores.


The evolution of the dentals ceramics allowed the making of restorations that joint aesthetic excellence to good physical properties, being able to be suitable in several clinical situations, recovering the smile’a harmony, without damage of the resistance and of the durability. Being like this, this work consists of the report of a clinical case where the dental ceramic of the Procera AllCeram System was used seeking a esthetic rehabilitation of the maxillary incisors.


Subject(s)
Ceramics , Crowns , Dental Restoration, Permanent , Esthetics, Dental
7.
Rev. flum. odontol ; 15(31): 37-43, jan.-jun. 2009. ilus
Article in Portuguese | LILACS, BBO | ID: lil-589626

ABSTRACT

A combinação perfeita da reposição protética da dentição natural é uma das tarefas m,ais desafiantes encontradas pelo cirurgião dentista, uma vez que vários são os fatores envolvidos em questão. Com o objetivo de padronizar uma técnica adequada de seleção de cor foi feita essa revisão de literatura. Conclui-se que além de fatores técnicos e científicos sobre a compreensão da interação entre luz e cor, ambiente ideal e técnica adequada existe ainda o fator fisiológico do olho humano com toda sua complexidade de formação, identificação e percepção de imagem.


The perfect match between a natural teeth and artificial restoration, is one of the most challenge procedures in restorative dentistry, as it has many factors involved. Aiming to standardize a technique suitable for selection of color was the review of literature. It is concluded that factors in addition to technical and scientific understanding about the interaction of light and color, ideal environment and proper technique is still the physiological factors of the human eye with all its complexity of training, identification and perception of image.


Subject(s)
Color , Esthetics, Dental , Light
8.
Rev. bras. odontol ; 63(3/4): 267-270, 2006. graf
Article in Portuguese | LILACS, BBO | ID: lil-541686

ABSTRACT

O objetivo desse trabalho foi avaliar o xilitol contido em uma goma de mascar mediante a variação do pH salivar, comparando-o com a clorexidina. Foram selecionadas 19 crianças que não possuíam clinicamente atividade de cárie. Utilizou-se: xilitol (grupo teste). clorexidina (controle positivo) e sacarose (controle negativo). Coletou-se a saliva de cada criança e foram medidos os pH iniciais e após o uso de cada substância (pH final). Foi concluído que a ação do xilitol na elevação do pH salivar pode ser considerada um efeito anticariogênico, assim como a clorexidina.


Subject(s)
Humans , Male , Female , Child , Chewing Gum , Dental Caries/prevention & control , Hydrogen-Ion Concentration , Saliva , Xylitol/therapeutic use , Chlorhexidine/therapeutic use , Sucrose/therapeutic use
9.
RGO (Porto Alegre) ; 47(3): 147-9, jul.-set. 1999. tab
Article in Portuguese | LILACS, BBO | ID: lil-262592

ABSTRACT

Os autores avaliaram o efeito de restauraçöes de amálgama de prata e de resina composta na resistência à compressäo de dentes debilitados por acesso endodôntico e pela perda de paredes proximais. Para isto, utilizaram 24 molares divididos em 3 grupos: dentes íntegros, restaurados com amálgama de prata e restaurados com resina composta e sistema adesivo. Concluiu-se que nenhuma das técnicas restauradoras restabelece a resistência a compressäo do dente íntegro e que, entre os materiais restauradores, o grupo das resinas compostas apresentou melhores resultados


Subject(s)
Humans , Male , Female , Dental Amalgam/therapeutic use , Composite Resins/therapeutic use , Tensile Strength , Tooth, Nonvital
10.
JBC j. bras. odontol. clín ; 2(12): 78-9, nov.-dez. 1998.
Article in Portuguese | LILACS, BBO | ID: lil-296598

ABSTRACT

O objetivo deste estudo foi avaliar se um sistema adesivo contendo glutaraldeído, criado especificamente para unir-se quimicamente à dentina, sem condicionamento ácido, apresenta melhor desempenho se executado o condicionamento, com ácido fosfórico a 35 por cento, no substrato dentinário previamente à aplicaçäo do primer. Os testes de cisalhamento, näo mostram diferenças quando utilizado o agente condicionante, indicando que a tentativa de obtençäo de efeito micromecânico, associado à açäo química, näo resultou em melhoria e também näo interferiu negativamente na açäo do adesivo


Subject(s)
Animals , Cattle , Acid Etching, Dental , Dentin-Bonding Agents , Glutaral , Compressive Strength , Tensile Strength
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