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Cheng S.-Y.,University of Sichuan | Cheng S.-Y.,State Key Laboratory of Oral Diseases | Cheng S.-Y.,National Local Joint Engineering Laboratory of Oral Regenerative Medicine | Wen H.-L.,State Key Laboratory of Oral Diseases | And 18 more authors.
Chinese Journal of Tissue Engineering Research | Year: 2014

BACKGROUND: Oversize stress of a dental implant and its surrounding tissue is the main factor to affect the long-term use of dental implants. So, the reasonable and precise design of implant shape is one of the important methods of prolonging the life span of dental implants. OBJECTIVE: To make the optimal analysis and design of the diameters of connector screw and central screw of the adjustable-angle dental implant invented in the earlier stage. METHODS: The finite element analysis model of the edentulous mandible with adjustable-angle dental implant was established by software Pro/E 5.0, Mimics 10.0 and ANSYS Workbench 14.5. The maximum equivalent stress of dental implant-edentulous mandibular model was analyzed. RESULTS AND CONCLUSION: The maximum equivalent stress of dental implant-edentulous mandibular model was much more sensitive to the diameter of connector screw than central screw. The maximum equivalent stress was the least when the diameters of connector screw and central screw were 1.29 and 0.95 mm, respectively, under vertical load as well as when the diameters of connector screw and central screw were 1.45 and 1.09 mm under lateral lingual load, respectively. The results of this research showed that the maximum equivalent stress in the madibular-dental implant-abutment model was more affected by the diameter of connector screw than that of central screw, indicating that more attention should be paid to the choice and design of connector screw. © 2014, Journal of Clinical Rehabilitative Tissue Engineering Research. All Rights Reserved. Source

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