RESUMO
OBJECTIVES: The aim of this clinical study was to evaluate the performance of restorations for non-carious cervical lesions performed with a two-step etch-and-rinse or with a two-step self-etch adhesive. MATERIALS AND METHODS: The teeth to be restored (15 patients, N = 90 restorations) were randomly assigned into 3 groups (n = 30), according to the adhesive system: group 1 (G1): Peak LC Bond; group 2 (G2): Clearfil Protect Bond; and group 3 (G3): prior selective acid etching of the enamel margins before bonding with Clearfil Protect Bond. The NCCLs were restored with Amelogen Plus composite resin. Two calibrated examiners evaluated the restorations using modified US Public Health Service criteria. The data of retention, marginal integrity, and marginal discoloration were analyzed using the Kruskal-Wallis and Wilcoxon tests. RESULTS: There were no significant differences in clinical performance among the groups for the variables: retention, marginal integrity, and marginal discoloration after 1 year and 2 years. The alpha rates after 2 years were: 93.3% for G1 and 96.7% for G2 and G3 for retention; 93.3%, 100%, and 90% for G1, G2, and G3 for marginal discoloration; 86.7%, 96.7%, and 90% for G1, G2, and G3 for marginal integrity, respectively. CONCLUSIONS: The adhesives presented similar clinical performance at the end of 2 years. Also, the prior etching with phosphoric acid did not significantly improve the clinical performance of self-etch adhesive.
Assuntos
Condicionamento Ácido do Dente/métodos , Preparo da Cavidade Dentária/métodos , Restauração Dentária Permanente/métodos , Adesivos Dentinários , Adulto , Resinas Compostas/química , Colagem Dentária , Adaptação Marginal Dentária , Materiais Dentários/química , Adesivos Dentinários/química , Feminino , Fluoretos/química , Humanos , Cura Luminosa de Adesivos Dentários , Masculino , Teste de Materiais , Pessoa de Meia-Idade , Compostos de Piridínio , Propriedades de Superfície , Resultado do TratamentoRESUMO
CONTEXT: The possibility of bleaching vital teeth with peroxide-based products considerably revolutionized esthetic dentistry. AIM: The aim of this clinical study was to evaluate tooth color change and dental sensitivity after exposure to preloaded film containing a 10% hydrogen peroxide whitening system (Opalescence Trθswhite Supreme). MATERIALS AND METHODS: A total of 13 volunteers, aged 18 to 25 years, participated in this study. The patients used the whitening system once a day for 60 minutes during the 8-day study. For maxillary incisors and canines, the color change was visually evaluated with the Vita color scale before, immediately, and six months after the treatment. Tooth sensitivity was evaluated during the daily gel applications. All whitening applications were done in office and under the supervision of a dental professional. STATISTICAL ANALYSIS USED: The results were analyzed using the Friedman Test (nonparametric repeated measures ANOVA) at a level of 5%, and Dunn's Multiple Comparison Test at the level of 5%. RESULTS: It was verified that the original mean color values observed at the baseline analysis differed significantly from those observed immediately after bleaching, as well as from those seen in the analysis at six months ( P = 0.001). There was no significant difference between the mean color values observed in the immediate time and in the analysis at six months ( P = 0.474). No tooth sensitivity was observed in any patients. CONCLUSION: It was concluded that the bleaching technique using the 10% hydrogen peroxide system was effective in a short period of time without tooth sensitivity during applications.
Assuntos
Peróxido de Hidrogênio/administração & dosagem , Clareamento Dental , Adolescente , Adulto , Cor , Humanos , Adulto JovemAssuntos
Microabrasão do Esmalte , Clareamento Dental , Descoloração de Dente/terapia , Peróxido de Carbamida , Misturas Complexas/uso terapêutico , Dentifrícios/uso terapêutico , Microabrasão do Esmalte/métodos , Feminino , Humanos , Peróxidos/uso terapêutico , Sorriso , Clareamento Dental/métodos , Clareadores Dentários/uso terapêutico , Ureia/análogos & derivados , Ureia/uso terapêutico , Adulto JovemRESUMO
The aim of this study was to assess the color alteration and sensitivity of teeth throughout and following in-office bleaching. Twenty-two volunteers participated in this clinical trial of bleaching treatment (35% hydrogen peroxide bleaching gel and placebo) applied on maxillary incisors and canines. According to a split-mouth design, the volunteers' maxillary hemi-arches received either the bleaching or placebo agent, applied four times, at 1-week intervals. Color alteration and tooth sensitivity were assessed throughout and following bleaching. Statistical calculations were performed using gamma distribution and repeated-measures ANOVA. There was a statistically significant difference between teeth submitted to a bleaching agent and placebo (P < .001). At the end of the first, second, third, and fourth sessions, the bleached teeth presented color scores statistically lower than those observed immediately before bleaching. There was no difference in the color scale scores of the bleached teeth between bleaching sessions. The sensitivity data test showed a significant difference among treatments (P < .0001). Color alteration and dental sensitivity were altered by the bleaching agent.
Assuntos
Dente Canino/efeitos dos fármacos , Sensibilidade da Dentina/etiologia , Incisivo/efeitos dos fármacos , Clareadores Dentários/uso terapêutico , Clareamento Dental/métodos , Adolescente , Adulto , Cor , Dente Canino/patologia , Seguimentos , Humanos , Peróxido de Hidrogênio/administração & dosagem , Peróxido de Hidrogênio/uso terapêutico , Incisivo/patologia , Placebos , Fatores de Tempo , Clareadores Dentários/administração & dosagem , Adulto JovemAssuntos
Estética Dentária , Sorriso , Descoloração de Dente/terapia , Adolescente , Peróxido de Carbamida , Cariostáticos/uso terapêutico , Esmalte Dentário/patologia , Humanos , Peróxido de Hidrogênio/administração & dosagem , Peróxido de Hidrogênio/uso terapêutico , Peróxidos/administração & dosagem , Peróxidos/uso terapêutico , Ácidos Fosfóricos/uso terapêutico , Silicatos/uso terapêutico , Fluoreto de Sódio/uso terapêutico , Clareamento Dental/métodos , Clareadores Dentários/administração & dosagem , Clareadores Dentários/uso terapêutico , Ureia/administração & dosagem , Ureia/análogos & derivados , Ureia/uso terapêuticoRESUMO
The following is a clinical case report of a patient whose chief complaint was the presence of generalized spacing in the maxillary anterior segment following orthodontic treatment. After meticulous clinical analyses and discussions of the clinical procedures to be adopted, dental bleaching was performed in both arches with 10% hydrogen peroxide (Opalescence Trèswhite Supreme 10% Hydrogen Peroxide - Ultradent Products, Inc., South Jordan, USA) after the conclusion and stabilization of orthodontic treatment. Then, the orthodontic appliance was removed and the diastemas in the maxillary anterior teeth were closed with Amelogen Plus (Ultradent Products, Inc., South Jordan, USA) resin composite. It was observed that the association of orthodontic, bleaching, and restorative procedures was capable of restoring dental shape, function, and esthetics, allowing the patient to smile without hesitation.
Assuntos
Restauração Dentária Permanente/métodos , Estética Dentária , Sorriso , Condicionamento Ácido do Dente/métodos , Adolescente , Peróxido de Carbamida , Resinas Compostas/química , Cimentos Dentários/química , Materiais Dentários/química , Dentina/patologia , Diastema/terapia , Feminino , Seguimentos , Gengivoplastia/métodos , Humanos , Peróxido de Hidrogênio/uso terapêutico , Incisivo/patologia , Peróxidos/uso terapêutico , Ácidos Fosfóricos/química , Retratamento , Clareamento Dental/métodos , Clareadores Dentários/uso terapêutico , Coroa do Dente/patologia , Descoloração de Dente/terapia , Ureia/análogos & derivados , Ureia/uso terapêuticoRESUMO
The objective of this study was to measure the thickness of the hybrid layer (HLT), length of resin tags (RTL) and bond strength (BS) in the same teeth, using a self-etching adhesive system Adper Prompt L Pop to intact dentin and to analyze the correlation between HLTand RTL and their BS. Ten human molars were used for the restorative procedures and each restored tooth was sectioned in mesio-distal direction. One section was submitted to light microscopy analysis of HLT and RTL (400x). Another section was prepared and submitted to the microtensile bond test (0.5 mm/min). The fractured surfaces were analyzed using scanning electron microscopy to determine the failure pattern. Correlation between HLT and RTL with the BS data was analyzed by linear regression. The mean values of HLT, RTL and BS were 3.36 microm, 12.97 microm and 14.10 MPa, respectively. No significant relationship between BS and HLT (R2= 0.011, p>0.05) and between BS and RTL (R2= 0.038) was observed. The results suggested that there was no significant correlation between the HLT and RTL with the BS of the self-etching adhesive to dentin.