Document Detail

Measurement (in vitro) of the amount of force required to dislodge specific clasps from different depths of undercut.
MedLine Citation:
PMID:  7473279     Owner:  NLM     Status:  MEDLINE    
A fundamental principle in clasp selection for a specific abutment is the reduction of the transmission of excessive forces to that abutment. The flexibility of a clasp was believed to directly affect the reduction of such forces. This study compares the average measurements of forces required to dislodge two kinds of circumferential clasps in different amounts of undercuts: one with a half-round retentive arm and the other with a round retentive arm under tensile load. Three commonly used undercuts were created on six cast crowns, premolars, and molars. Each clasp was exposed to adequate tensile load until dislodgment occurred. The test was run six times for the same clasp. The means of tensile load required to dislodge each of the different clasps were compared statistically. However, no significant difference was detected for the main effects of the three variables studied: tooth type, undercut, and amount and clasp type. Findings indicated the possible use of cast round clasps where advantages of clinical fit and reduction of transmitted forces to the abutments can be gained.
M K Marei
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of prosthetic dentistry     Volume:  74     ISSN:  0022-3913     ISO Abbreviation:  J Prosthet Dent     Publication Date:  1995 Sep 
Date Detail:
Created Date:  1995-11-30     Completed Date:  1995-11-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376364     Medline TA:  J Prosthet Dent     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  258-63     Citation Subset:  D; IM    
Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Egypt.
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MeSH Terms
Analysis of Variance
Chromium Alloys*
Dental Abutments*
Dental Clasps*
Dental Models
Dental Prosthesis Design
Dental Stress Analysis
Tensile Strength
Reg. No./Substance:
0/Chromium Alloys

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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