Mechanical analysis of a new fixture-abutment connection. Analisi meccanica di una nuova connessione impianto abutment.

Objectives. After implant insertion and loading, crestal bone usually undergoes remodelling and resorption. If the horizontal relationship between the outer edge of implant and a smaller-diameter abutment (platform switching) is altered, there seems to be a reduced crestal bone loss. Aim of this work has been to evaluate in vitro a new fixture-abutment connection with cone morse and screw. Materials and methods. Mechanical tests were carried out using a Lloyd LR30K Universal testing machine (Lloyd Instruments Ltd, UK). The load was applied on the coronal portion of the abutment with a crosshead speed of 10 mm/min. The fracture load data were automatically recorded using Nexigen software (Nexigen, Batch Version 4.0, Issue 23, Lloyd Instruments Ltd, UK). Results. The results show that the new fixture-abutment connection with cone morse and screw joint systems may fracture at 1,050 ± 60 N. Conclusions. The Authors conclude that these fixture-abutment connections with cone morse and screw are highly resistant.