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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

June 1992
Volume 23 , Issue 6

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Comparative investigation of dynamic loading of prepared and intact human premolars


Pages: 435-438
PMID: 1502324

The aim of this study was to obtain some data on the dynamic strength of premolar teeth. Experiments were performed on three groups of human premolars: intact teeth, teeth prepared for partial veneer crowns with flat occl usal surfaces, and teeth prepared for partial veneer crowns with rounded occlusal surfaces. The loading procedure was performed in a modified Amslers high-frequency pulsator. The greatest dynamic strength was exhibited by the intact specimens. The highest continual (unlimited number of loading cycles) dynamic stress withstood by all three groups of premolars was about 300 N. A statistically significant negative correlation was found between Fmax and the number of cycles in all three tested groups.

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