Three-Year Clinical Evaluation of Class I Restorations in Posterior Teeth. Effects of Two Adhesive Systems.

This longitudinal study evaluated the clinical performance of 97 direct class I resin composite restorations after 3 years. The restorations were performed using 2 types of adhesive systems: (1) Adper™ Single Bond Plus (SB) (3M ESPE, 3mespe.com), which is a two-step etch-and-rinse system, and (2) Adper Scotchbond™ SE (SE) (3M ESPE), which is a two-step self-etching system. Two calibrated examiners evaluated the restorations using modified US Public Health Service criteria. The materials were applied following the manufacturer's instructions, and 15 patients received at least one of the two adhesive systems. The restorations were evaluated 7 days after placement (baseline) and again after 3 years. Statistical analysis was performed using a proportion t-test at a significance level of 5% (P < .05). At baseline, all restorations received an Alpha score for the variable marginal discoloration and marginal integrity. After 3 years, marginal discoloration received an Alpha score for 53.19% of the restorations performed with SB and 52.08% with SE. Marginal integrity was rated as Alpha for 65.96% and 68.75% of the restorations with SB and SE systems, respectively. The remaining restorations received Bravo scores for all variables. Eight restored teeth presented postoperative sensitivity at baseline (5 SB; 3 SE), but no sensitivity was found after 3 years. No secondary caries was verified. No statistically significant differences were observed between the teeth restored with the SB and SE systems for marginal discoloration (P = .7880) and marginal integrity (P = .8132) after 3 years. Direct class I resin composite restorations performed with a two-step etch-and-rinse and a two-step self-etching adhesive system demonstrated satisfactory clinical performance after 3 years.

Fundamentos de oclusão em implantodontia: orientações clínicas e seus determinantes protéticos e biomecânicos / Occlusion rationales in implantology: clinical guidelines and their prosthetics and biomechanics determinants

O advento da implantodontia e o processo de osseointegração têm sido um dos grandes avanços terapêuticos da odontologia moderna, principalmente no que diz respeito às reabilitações orais por meio de próteses sobre implantes. Entretanto algumas complicações podem se desenvolver, principalmente a sobrecarga oclusal. O sucesso de qualquer modelo de prótese depende do correto controle e domínio da oclusão, portanto o padrão oclusal das próteses sobre implantes deve respeitar os fatores biomecânicos de modo a evitar as complicações protéticas. O objetivo do presente estudo foi revisar alguns conceitos atuais existentes na literatura referentes aos fundamentos de oclusão aplicados à implantodontia, bem como discutir os aspectos biomecânicos envolvidos, proporcionando orientações clínicas úteis na formulação de protocolos terapêuticos para os diferentes modelos de próteses sobre implantes, visando à longevidade das mesmas

The coming of the implantology and the osseointegration process has been one of the great therapeutic progresses of the modern dentistry, mainly in concerns the oral rehabilitations through implant prostheses. However some complications can occur, mainly the occlusal overload. The success of any prosthesis model depends on the correct control and understanding of the occlusion, therefore the implant prostheses occlusal pattern should respect the biomechanical factors to avoid the prosthetic complications. The objective of the present study was to revise the existent current concepts in the referring literature to the applied implantology occlusion rationales, as well as to discuss the aspects involved biomechanical, providing useful clinical guidelines in the formulation of therapeutic protocols for the different models of implant prostheses, aiming to the longevity of the rehabilitation