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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.

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Introdução: A avulsão é caracterizada pelo deslocamento do dente para fora da cavidade alveolar, ocasionando danos no ligamento periodontal e na polpa dentária. Seu prognóstico depende das ações imediatas ao acidente, e o reimplante é a melhor forma de devolver função e estética ao paciente. Objetivo: Comparar os três últimos protocolos da International Association of Dental Traumatology (IADT) e avaliar a evolução do tratamento, destacando a terapêutica preconizada. Material e Métodos: Foram utilizadas diretrizes da IADT publicadas nos anos 2007, 2012 e 2020 e artigos relacionados à avulsão dentária, pesquisados nas plataformas digitais Pubmed e Google Acadêmico. Uma análise de classificação dos artigos encontrados, pelo indicador Scimago Journal Rank (SJR) foi utilizada. Foram incluídos apenas estudos que constaram classificações de Q1 e Q2. Resultados: atualizações importantes em meios de armazenamento com osmolaridade fisiológica, limpeza do dente avulsionado, terapia antibiótica, tratamento do canal radicular, tratamento da superfície radicular e retirada do coágulo da cavidade alveolar foram implementadas. Conclusão: A atualização dos profissionais em relação aos protocolos terapêuticos relacionados à avulsão se faz necessária tendo em vista a ampla atualização quanto as estratégias de manejo preconizadas.

Objectives This study evaluated the relationship between the battery charge level and irradiance of light-emitting diode (LED) light-curing units (LCUs) and how these variables influence the Vickers hardness number (VHN) of a bulk-fill resin. Materials and Methods Four LCUs were evaluated: Radii Plus (SDI), Radii-cal (SDI), Elipar Deep Cure (Filtek Bulk Fill, 3M Oral Care), and Poly Wireless (Kavo Kerr). Irradiance was measured using a radiometer every ten 20-second activations until the battery was discharged. Disks (4 mm thick) of a bulk-fill resin (Filtek Bulk Fill, 3M Oral Care) were prepared, and the VHN was determined on the top and bottom surfaces when light-cured with the LCUs with battery levels at 100%, 50% and 10%. Data were analyzed by 2-way analysis of variance, the Tukey’s test, and Pearson correlations (α = 5%). Results Elipar Deep Cure and Poly Wireless showed significant differences between the irradiance when the battery was fully charged versus discharged (10% battery level). Significant differences in irradiance were detected among all LCUs, within each battery condition tested. Hardness ratios below 80% were obtained for Radii-cal (10% battery level) and for Poly Wireless (50% and 10% battery levels). The battery level showed moderate and strong, but non-significant, positive correlations with the VHN and irradiance. Conclusions Although the irradiance was different among LCUs, it decreased in half of the devices along with a reduction in battery level. In addition, the composite resin effectiveness of curing, measured by the hardness ratio, was reduced when the LCUs’ battery was discharged.

Introduction: The final color of dental ceramics depends on different factors such as light source, substrate, and selected material (thickness, contour, and texture). Objective: to report a clinical case in which a predictable protocol is used to optimize the final color of porcelain laminate veneers Case report:: A male patient attended the dental clinic dissatisfied with the composite resin restorations made on his upper anterior teeth. After anamnesis and clinical examination, it was suggested that the resin restorations be replaced by laminated porcelain veneers. A diagnostic wax-up was performed. The mock-up was also used to evaluate the aesthetic length for replicating the details of the incisal edge and the shape and size of the embrasures. The shade was selected before composite resin removal to avoid dehydration of the dental substrate. A photograph was taken to guide the selection of colors in different thirds. After removing the restorations, another photograph was taken to evaluate the color of the substrate. The impression was taken with 000 retractor wire and addition silicone. The laminates were made with pressed ceramic and feldspathic porcelain veneers were subsequently applied by layering the layers of dentin, incisal edge and enamel based on the waxing diagnosis. After approval by the patient, a conventional cementation technique was performed. The occlusal adjustment was made with rubber polishing cups and the anterior and lateral guides were checked. Conclusion: The protocol recommended for successful selection of the color of a porcelain laminate relies on the combination of knowledge of concepts, resources such as shade guides, spectrophotometers, and photographs, and porcelain application and characterization techniques performed by the technician and luting techniques by the dentist.

Dental trauma often have severe and complex injuries to the dentoalveolar system. Objective: To report the treatment of crown-root horizontal fracture and uncomplicated crown fracture in permanent dentition. Case report: Child patient attended the dental trauma service 30 days after the fall. On clinical and imaging examination, an uncomplicated crown fracture in the right central incisor and crown-root fracture in the left central incisor was possible to identify (tooth 11 and tooth 21 respectively). The conventional restorative treatment (tooth 11) and repositioning (tooth 21) were performed. The endodontic treatment was performed at 6 months of follow-up (tooth 11). At the new imaging exam, cement neoformation was evidenced between the fragments of the crow-root fracture (tooth 21). After 24 months of follow-up, there was a decrease in periapical lesion (tooth 11), and maintenance of pulp vitality (tooth 21). Conclusion: There is a possibility of maintaining pulp vitality in crown-root fractures and highlights the importance of follow-up in non-complicated fractures.

Introduction: The final color of dental ceramics depends on different factors such as light source, substrate, and selected material (thickness, contour, and texture). Objective: to report a clinical case in which a predictable protocol is used to optimize the final color of porcelain laminate veneers Case report: A male patient attended the dental clinic dissatisfied with the composite resin restorations made on his upper anterior teeth. After anamnesis and clinical examination, it was suggested that the resin restorations be replaced by laminated porcelain veneers. A diagnostic wax-up was performed. The mock-up was also used to evaluate the aesthetic length for replicating the details of the incisal edge and the shape and size of the embrasures. The shade was selected before composite resin removal to avoid dehydration of the dental substrate. A photograph was taken to guide the selection of colors in different thirds. After removing the restorations, another photograph was taken to evaluate the color of the substrate. The impression was taken with 000 retractor wire and addition silicone. The laminates were made with pressed ceramic and feldspathic porcelain veneers were subsequently applied by layering the layers of dentin, incisal edge and enamel based on the waxing diagnosis. After approval by the patient, a conventional cementation technique was performed. The occlusal adjustment was made with rubber polishing cups and the anterior and lateral guides were checked. Conclusion: The protocol recommended for successful selection of the color of a porcelain laminate relies on the combination of knowledge of concepts, resources such as shade guides, spectrophotometers, and photographs, and porcelain application and characterization techniques performed by the technician and luting techniques by the dentist.