Numerical Analysis of the Influence of Cement Thickness on Stress Distribution in All-ceramic Crowns / 航天医学与医学工程
Space Medicine & Medical Engineering
;
(6)2006.
Article
in Chinese
| WPRIM
| ID: wpr-580569
ABSTRACT
Objective To provide theoretical basis for clinical treatment of all-ceramic crown prosthodontics,the influence of cement thickness on the stress distribution in all-ceramic crowns under load was studied numerically.Methods The finite element analysis(FEA) model of a standard mandibular first molar was established using spiral CT and CAD software,and then it was applied to analyze the stress distribution of all-ceramic crowns under vertical loading using FEA software.Results Stress concentration was found in mesial and distal cement;the stress distribution at the cement upper and lower interface was found to be similar,and the stress magnitude discrepancy between the two interfaces was small;the stress of the model with 0.15 mm cement in the cervix was lower about 30% than the one of the 0.05 mm model.Conclusions The cement thickness plays an important role in the stress distribution of all-ceramic restoration system.The model with 0.15 mm cement shows a better resistance to destruction among the three models investigated.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Space Medicine & Medical Engineering
Year:
2006
Type:
Article
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