Biomechanical Study Of Dental Implant In Mandibular Dentition Defect

In the last decade, dental implant prosthesis in many research and clinical trials has received an important breakthrough and innovation and become a very mature treatment, the biomechanics research of which has become the developing trend of oral medicine.Based on MIMICS reverse engineering, ABAQUS finite element analysis software, this paper aims at studying the bio-mechanic problems in dental implant prosthesis of mandibular dentition defect and provides dentists some valuable references that can not be offered by finite element analysis effectively. The major work and results are as follows:1.From the angle of dental implant system and its clinical application, the main factors of dental implant have been studied and summarized. In addition to the implant geometric shape, dentition and mandibular bone defects, the paper proposes the most pronounced factors of dental implant success: tooth functional division, bite force and the implant distribution.2.According to the routines of clinical use of implant distribution program, this article proposes a new implant distribution program based on mandibular biomechanics from several major factors that affects dental implant success or failure, so as to expand the use of physician programs and help the implant abutment and supporting systems to innovate.3.By means of finite element analysis software, analysis and comparison of the mandibular biomechanical effects of conventional and new programs are concluded. It comes to a more reasonable distribution of the new implants. It can also be induced that the program to optimize the implant distribution is decided by dental functional areas.4.From the application of the finite element analysis in biomechanical studies, this paper studies on the bio-mechanical model of how to reflect the true biological model, and proposes some innovative processing: mandible model simplification, boundary conditional load and accurate assignment of mandible materials. Model simplification solves difficult problems of extracting models with fuzzy demarcation of the jaw skin and spongy bone; jaw accurate assignment makes a breakthrough in over-homogenization by means of the finite element analysis, and provides an effective means to get closer to the real biomechanical situation; functional load solves the single problem in different teeth areas and reflects the characteristics of teeth in different functional areas.Finally, the paper draws a conclusion and makes the prospects for further study on biomechanics applied to Oral Implantology.