Biomechanics Analysis Of Dental Implants Systems Based On The Reverse Engineering And Zoological Experiment Research

Dental implants are the rapidly developing oral new restoration.With the improved dramatically advantages of the implant denture in the recent decades, this new prosthodontics has become a widely accepted treatment for patients.Most of the studies have shown multi-year success rate is very high for implants placed in patients. The excessive load on the interface of implant and bone caused by stress centralizing is the main reasons of implant failure, which induces the absorption of the bone around implant. To maximize the chance for long-term implant stability and function, the design and selection of dental implant should base on better biomechanics compatibility and compatible structure.In this paper, stress distributions on the components of implant system with different connection between abutment and dental implant were analyzed by finite element software. At the same time, stress distributions on the interface of jaw bone and components of implant system were analyzed when the angled abutment was implanted jaw bone with different angle. Firstly, the real human body’s lower jaw was built by reverse engineering; and then, with the lower jaw, platform switching and straight margin connection, two fashionable connection styles of abutment, were studied in detail. In order to get the two connection styles of abutment, the straight margin connection model was built from3i implant system (USA) while the platform switching model was built from Dentium implant system (Korea). The three-dimensional entity model of straight abutment, angled abutment, screws and implant were built by7.5modeling software UG. After the implant system and the real lower jaw were assembled, biomechanics of the assembly was analyzed by Ansys Workbench14.0. Finally, some evaluations for osseointegration between implant and jaw bone were studied in this paper.Conclusion for this study:It has lower peak stress on straight margin connection system when the force loaded in vertical line while it is idealer on platform switching when the force loaded in slant line. The angled abutment on the platform switching connection system are more beneficial to distribution of stress on the interface of jaw bone when compared to straight margin system. Angled abutment with15°system has better effects on stress distribution. Ability of osseointegration between implant and jaw bone can have a great increase when the implant was treated with the process of sandblast and acid andplasma oxidation on the implant surface which had been sandblasted and acid-etched.