ABSTRACT
Os problemas decorrentes de perdas dentárias em áreas estéticas têm sido motivo de intensa dedicação científica e empenho clínico a fim de alcançar estabilidade mecânica e estética favoráveis. O advento dos implantes dentários osseointegráveis supriu quesitos de suporte mecânico; no entanto, a remodelação óssea cervical ao redor de implantes com plataforma convencional pode comprometer significativamente a manutenção dos tecidos peri-implantares, gerando sérios agravos estéticos. Atualmente, o objetivo da instalação de implantes Cone Morse vai além de atender a uma tendência evolutiva em Implantodontia, proporcionando a manutenção das características teciduais peri-implantares e o favorecimento da confecção de próteses estéticas, direcionando todo o processo terapêutico a possibilitar perfil de emergência ideal e relacionamento natural e harmonioso com os tecidos circunjacentes. Logo, essa revisão bibliográfica tem o intuito de apresentar tais características, que conferem um alto índice de sucesso e de longevidade das peças protéticas, garantindo maior previsibilidade de manutenção das condições em reabilitações protéticas.
The issues arising from tooth loss in esthetic zones have been the subject of intense scientific dedication andclinical commitment of which purpose is to achieve favorable mechanical and esthetic stability. The adventof osseointegrated dental implants has satisfied the need for mechanical support; however, cervical boneremodeling around implants with conventional platform may significantly compromise the maintenance ofperi-implant tissues, causing serious esthetic injuries. The purpose of Morse Taper implant placement goesbeyond the current evolutionary trend in Implantology. It provides maintenance of peri-implant tissue characteristicsand facilitates esthetic prosthesis design, thus allowing an ideal emergence profile and a naturaland harmonious relationship with surrounding tissues to be achieved during the entire therapeutic process.Therefore, this literature review aims at presenting the characteristics that confer a high rate of success andlongevity to prosthetic parts, ensuring greater predictability of maintenance in prosthetic rehabilitation.
Subject(s)
Dental Implant-Abutment Design , Dental Implantation, Endosseous , Dental Implants, Single-Tooth , Dental Prosthesis, Implant-Supported , Esthetics, Dental , Mouth RehabilitationABSTRACT
PURPOSE: The aim of the present study was to evaluate if a smaller morse taper abutment has a negative effect on the fracture resistance of implant-abutment connections under oblique compressive loads compared to a conventional abutment. MATERIALS AND METHODS: Twenty morse taper conventional abutments (4.8 mm diameter) and smaller abutments (3.8 mm diameter) were tightened (20 Ncm) to their respective implants (3.5 x 11 mm) and after a 10 minute interval, implant/abutment assemblies were subjected to static compressive test, performed in a universal test machine with 1 mm/min displacement, at 45degrees inclination. The maximum deformation force was determined. Data were statistically analyzed by student t test. RESULTS: Maximum deformation force of 4.8 mm and 3.8 mm abutments was approximately 95.33 kgf and 95.25 kgf, respectively, but no fractures were noted after mechanical test. Statistical analysis demonstrated that the evaluated abutments were statistically similar (P=.230). CONCLUSION: Abutment measuring 3.8 mm in diameter (reduced) presented mechanical properties similar to 4.8 mm (conventional) abutments, enabling its clinical use as indicated.