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- Title
Failure characteristics of endodontically treated premolars restored with a post and direct restorative material.
- Authors
Huysmans, M.-C. D. N. J. M.; Peters, M. C. R. B.; Plasschaert, A. J. M.; Van Der Varst, P. G. T.
- Abstract
Ninety-one extracted maxillary premolar teeth were restored with a prefabricated post and amalgam, composite resin or glass-cement core. Each group was again divided into three groups of 9-13 teeth to be subjected to an increasing load in one of three standardized directions (10, 45 and 90° to the long axis of the tooth). Failure load and characteristics of failure were recorded. The glass-cement-restored teeth had a lower strength than the other groups for every load direction (Student's <em>t</em>-test: P lt; 0.01). Amalgam and composite resin groups showed a significant difference only for the 100 loading condition (Student's <em>t</em>-test: P< 0.02). Teeth restored with amalgam cores displayed a higher mean failure load, in combination with a 46% occurrence of root fracture.
- Subjects
BICUSPIDS; DENTAL amalgams; TEETH; OPERATIVE dentistry; ENDODONTICS; DENTISTRY
- Publication
International Endodontic Journal, 1992, Vol 25, Issue 3, p121
- ISSN
0143-2885
- Publication type
Article
- DOI
10.1111/j.1365-2591.1992.tb00774.x