Affordable Access

deepdyve-link deepdyve-link
Publisher Website

Influence of fatigue testing and cementation mode on the load-bearing capability of bovine incisors restored with crowns and zirconium dioxide posts.

Authors
  • Nothdurft, F P
  • Schmitt, T
  • Motter, P J
  • Pospiech, P R
Type
Published Article
Journal
Clinical Oral Investigations
Publisher
Springer-Verlag
Publication Date
Dec 01, 2008
Volume
12
Issue
4
Pages
331–336
Identifiers
DOI: 10.1007/s00784-008-0205-9
PMID: 18536945
Source
Medline
License
Unknown

Abstract

The aim of the study was to evaluate the influence of fatigue and cementation mode on the fracture behavior of endodontically treated bovine incisors restored with zirconium dioxide posts and crowns. Forty-eight endodontically treated bovine primary incisors were restored with zirconium dioxide posts (Cerapost, Brasseler), composite build-ups, and crowns cast from a chromium cobalt alloy. In 16 teeth, each of the posts was cemented conventionally with KetacCem (3M ESPE) or adhesively with Panavia F (Kuraray) or RelyX UniCem (3M ESPE). One-half of the specimens in each group were subjected to thermocycling with 10,000 cycles at 5-55 degrees C and mechanical aging, loading the specimens at an angle of 45 degrees in 1,200,000 cycles with 50 N. Fracture resistance was determined by loading the specimens until fracture at an angle of 45 degrees to the long axis of the teeth. The loading test showed that neither cementation mode nor fatigue testing had an influence on the load bearing capability. Most specimens fractured in a favorable way, independent from the type of cementation.

Report this publication

Statistics

Seen <100 times