| dc.description.abstract | There are three ways to treat damages of tooth in clinical trial include dentures that movable ,dentures that fixed and dental implant. No matter in occlusion , aesthetics or life time ,dental implant is a better treatment than the others .Even though ,dental implant have developed more than 40 years, the failing rate was still more than 10 percent in clinic. The reason are bone mineral density (BMD),the pros and cons of surgery ,the area of surgery , bacterial infection and the mechanical failing of dental implant. The reason cause mechanical failing of dental implant are fracture of linkage, screw of implant ,abutment and the tenon of implant and abutment. And the major effect is the tenon of implant and abutment. The tenon of implant and abutment is not only to against torsion but also protect linkage and abutment.
The study designs and builds and analyzes nine models of dental implant and abutment by Solidworks. There are external and internal of hex, torx, height of tenon, height of tube and tape. The result show that a dental implant has tube and tape is better and the height of the tenon and tube are the longer one is the best. Therefore, the study used the torx shaped tenon which height is 1 mm and the best design included 3 mm height tube and tape in order to reduce the risk of mechanical failing.
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