MECHANICAL ANALYSIS OF THE CONE MORSE ABUTMENT IMPLANT

A. Scarano¹, M. Di Carmine¹, C. Bugea1, G. Scogna¹, G. Di Palma², F. Inchingolo² and F. Lorusso¹

¹Oral Surgery Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, Chieti, Italy;
²Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, Bari, Italy

Correspondence to:
Prof. Antonio Scarano D.D.S., M.D.
Oral Surgery Department of Innovative Technologies in Medicine and Dentistry,
University of Chieti-Pescara,
Via dei Vestini, 31,
66100 Chieti, Italy
e-mail: ascarano@unich.it

Received: 02 June 2018 Accepted: 29July2018

2038-4106(2018) Copyright © by BIOLIFE This publication and/or article is for individual use only and may not be further reproduced without written permission from the copyright holder. Unauthorized reproduction may result in financial and other penalties Disclosure: all authors report no conflicts of interest relevant to this article.

ABSTRACT

After implant insertion and loading, crestal bone usually undergoes a process of remodelling and resorption. In order to reduce crestal bone loss, the “platform switching” technique has been proposed, in which the horizontal relationship between the outer edge of the implant and a smaller-diameter component is increased. The aim of the present work was to evaluate in vitro a fixture-abutment connection with cone morse and screw. Mechanical tests were carried out using a Lloyd 30K universal testing machine (Lloyd Instruments Ltd, Segensworth, UK). The load was applied on the coronal portion of the abutment with a crosshead speed of 5 mm/min, and the fracture load data were automatically recorded using Nexigen software (Nexigen, Batch Version 4.0, Issue 23, Lloyd Instruments Ltd, Segensworth, UK). The results indicated that the force necessary to induce a fracture when using the new fixture-abutment connection with cone morse and screw joint systems reached 1250±60 N. In conclusion, the fixture-abutment connection with the cone morse tested in this study presents a very high resistance.

KEYWORDS: bone resorption, microgap, platform switching, vertical bone loss, abutment-fixture connection