Five-year clinical evaluation of universal adhesive applied following different bonding techniques: A randomized multicenter clinical trial.

OBJECTIVES: To evaluate the clinical performance of a universal adhesive system (Futurabond U, Voco) when applied following different adhesive strategies in non-carious cervical lesions (NCCLs) after 5 years. METHODS: Fifty participants were included. Futurabond U (Voco) was applied in NCCLs using four adhesive strategies (n = 50 each): only self-etch (SE); selective enamel etching + self-etch (SET + SE); etch-and-rinse with dry dentin (ERD); and etch-and-rinse with wet dentin (ERW). All cavities were restored with Admira Fusion composite resin (Voco). Restorations were evaluated after 1, 3, and 5 years using the World Federation criteria (FDI) and the modified United States Public Health Service (USPHS) criteria. RESULTS: After 5 years, retention rates were 81 % (65.8-90.5) for SE, 87 % (73.2-94.4) for SET + SE, 84 % (69.6-92.6) for ERD, and 78 % (63.6-88.9) for ERW (p > 0.05). Thirty-five restorations were considered to have minor discrepancies in marginal adaptation at the 5-year recall (14 for SE, 9 for SET + SE, 6 for ERD, and 6 for ERW; p > 0.05). Sixteen restorations were detected as a minor marginal discoloration (6 for SE, 4 for SET + SE, 1 for ERD, and 5 for ERW; p > 0.05) and one restoration showed a recurrence of caries (1 for ERW; p > 0.05) at the 5-year recall. No restorations showed postoperative sensitivity after 5 years. SIGNIFICANCE: NCCLs restorations using a universal adhesive showed satisfactory clinical performance after 5 years, regardless of the adhesive strategy.

The role of orthodontic tooth movement in bone and root mineral density: a study of patients submitted and not submitted to orthodontic treatment.

BACKGROUND: Orthodontic force application to the teeth is responsible for a series of biological responses in the bone and dentin, which lead to some alterations of the mineral density of the tissues. Our objective was determine, through cone-beam computed tomography (CBCT), the mineral density of the apical third of the roots of the upper central incisors and of the periapical bone portion surrounding these teeth, in patients submitted to orthodontic treated and untreated individuals. MATERIAL/METHODS: 30 untreated individuals and 15 treated ones (treatment cessation at least 1 year before the study) underwent CBCT. Mineral density was assessed in the apical third of the root of the upper central incisors and in the alveolar bone in the periapical region of these teeth. In order to reduce CBCT-related mineral density variability, we standardized the cone-beam tomography device, the image-acquisition settings and the field of view positioning and size. Student's t test was used for the analyses. RESULTS: bone mineral density (BMD) and root mineral density (RMD), in Hounsfield Units, were 674.84 and 1282.26 for the untreated group and 630.28 and 1370.29 for the treated group, respectively. The differences between the group means were statistically significant for RMD (p<0.05). CONCLUSIONS: untreated individuals had a significant lower mean RMD in comparison with those submitted to orthodontic treatment.

Universal Simplified Adhesive applied under different bonding technique's: 36-month Randomized Multicentre Clinical Trial.

OBJECTIVES: To evaluate the clinical performance of a new dual-cure universal adhesive system (Futurabond U, Voco) when applied using different application strategies in non-carious cervical lesions (NCCLs) after 36 months. MATERIAL AND METHODS: Futurabond U was applied in NCCLs of 50 subjects using four adhesion strategies (n = 50 restorations per group): only self-etch (SEE); selective enamel etching + self-etch (SET); etch-and-rinse with dry dentin (ERDry); and etch-and-rinse with wet dentin (ERWet). All cavities were restored using Admira Fusion composite resin (Voco). Restorations were evaluated after 36 months using the World Federation criteria (FDI) and the modified United States Public Health Service (USPHS) criteria. RESULTS: The after 36-month retention rates were 87% (75-92%) for SEE, 94% (83-98%) for SET, 91% (80-97%) for ERDry, and 94% (83-98%) for ERWet. Forty-three restorations were considered to have minor discrepancies in marginal adaptation at the 36-month recall (18 for SEE, 12 for SET, 7 for ERDry, and 6 for ERWet; p > 0.05). One restoration was detected as a minor marginal discoloration at the 36-month recall (1 for SET; p > 0.05). No restorations showed postoperative sensitivity and caries recurrence at 36 months. CONCLUSION: The clinical performance of the Futurabond U did not depend on the employed bonding strategy, and it was considered reliable after 36 months of clinical evaluation. However, greater marginal discrepancy was observed in the self-etch groups. CLINICAL RELEVANCE: NCCLs restorations using a dual-cure universal adhesive in self-etch and etch-and-rinse modes showed satisfactory clinical performance after 36 months.