NDLI: Biomechanical effects of two different collar implant structures on stress distribution under cantilever fixed partial dentures.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Meriç, Gökçe Erkmen, Erkan Kurt, Ahmet Eser, Atilim Özden, Ahmet Utku
Description	Country affiliation: Turkey Author Affiliation: Meriç G ( Near East University, Faculty of Dentistry, Department of Prosthodontics, Mersin, Turkey. gokcemeric@yahoo.com)
Abstract	OBJECTIVE: The purpose of the study was to compare the effects of two distinct collar geometries of implants on stress distribution in the bone around the implants supporting cantilever fixed partial dentures (CFPDs) as well as in the implant-abutment complex and superstructures. MATERIALS AND METHODS: The three-dimensional finite element method was selected to evaluate the stress distribution. CFPDs which was supported by microthread collar structured (MCS) and non-microthread collar structured (NMCS) implants was modeled; 300 N vertical, 150 N oblique and 60 N horizontal forces were applied to the models separately. The stress values in the bone, implant-abutment complex and superstructures were calculated. RESULTS: In the MCS model, higher stresses were located in the cortical bone and implant-abutment complex in the case of vertical load while decreased stresses in cortical bone and implant-abutment complex were noted within horizontal and oblique loading. In the case of vertical load, decreased stresses have been noted in cancellous bone and framework. Upon horizontal and oblique loading, a MCS model had higher stress in cancellous bone and framework than the NMCS model. Higher von Mises stresses have been noted in veneering material for NMCS models. CONCLUSION: It has been concluded that stress distribution in implant-supported CFPDs correlated with the macro design of the implant collar and the direction of applied force.
File Format	HTM / HTML
ISSN	00016357
Issue Number	6
Volume Number	69
e-ISSN	15023850
Journal	Acta Odontologica Scandinavica
Language	English
Publisher	Taylor & Francis
Publisher Date	2011-11-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Dentistry Dental Implants Dental Prosthesis Design Dental Prosthesis, Implant-supported Denture, Partial, Fixed Aluminum Silicates Chemistry Biomechanical Phenomena Chromium Alloys Computer Simulation Dental Abutments Dental Alloys Dental Implant-abutment Design Dental Porcelain Dental Veneers Denture Design Elastic Modulus Finite Element Analysis Humans Imaging, Three-dimensional Methods Mandible Physiology Models, Biological Osseointegration Potassium Compounds Stress, Mechanical Surface Properties Titanium Comparative Study Journal Article
Content Type	Text
Resource Type	Article
Subject	Dentistry Medicine

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