Document Detail


[Influence of reducing buccolingual width of artificial crown of implant prosthesis on distribution of biting force and masticatory efficiency].
MedLine Citation:
PMID:  22883819     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: To discuss the influence of reducing buccolingual width of artificial crown on distribution of biting force and masticatory efficiency in unilateral distal-extension implant denture and provide valuable information for the design of buccolingual width. To find a design that the biting force of implant prothesis was less evident than those on the contralateral natural teeth without compromising masticatory efficiency.
METHODS: T-Scan II occlusal analyzer and 722 grating spectrophotometer were used to analyze the distribution of biting force and masticatory efficiency in unilateral distal-extension implant denture. Heat-cured resin crowns with three different buccolingual width (group A: standard buccolingual width; group B: the buccolingual width was reduced by 1/4; group C: the buccolingual width was reduced by 1/3) were designed as follow, one was contoured with standard buccolingual width, the other two were made with reducd buccolingual width by 1/4 and 1/3.
RESULTS: The ratio of biting force (ROF) of group C was 16.25%, which was significantly lower than group A (27.38%) and B (22.60%) (P < 0.0083). The X axis displacement of center of occlusal force (COF) of group C was 2.0 mm, which was significantly difference with group A (1.5 mm, P = 0.004). The masticatory efficiency absorbance A value (MEA) of group C was 0.217, which was significantly lower than group A (0.345, P = 0.005) and B (0.289, P = 0.004).
CONCLUSIONS: According to the study, the buccolingual width of the crown reduced by 1/4 was a more ideal design for unilateral distal-extension implant denture.
Authors:
Mei Mei; Ying Wen; Dong-Xiang Zheng; Jing-Huan Li
Publication Detail:
Type:  English Abstract; Journal Article    
Journal Detail:
Title:  Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology     Volume:  47     ISSN:  1002-0098     ISO Abbreviation:  Zhonghua Kou Qiang Yi Xue Za Zhi     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-08-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8711066     Medline TA:  Zhonghua Kou Qiang Yi Xue Za Zhi     Country:  China    
Other Details:
Languages:  chi     Pagination:  264-7     Citation Subset:  D; IM    
Affiliation:
Department of Prosthodontics, Capital Medical University School of Stomatology, Beijing 100050, China. Email: zhengdongxiang@dentist.org.cn.
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