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- Title
Adaptation of Adhesive Posts and Cores to Dentin After Fatigue Testing.
- Authors
Dietschi, Didier; Romelli, Massimo; Goretti, Alessandro
- Abstract
An in vitro nondestructive fatigue test was applied to adhesive posts and cores made on endodontically treated human teeth. Five post-and-core systems were evaluated: one zircon oxide post, two titanium posts (with resinous or ceramic coating) and two resin-fiber posts. Each test specimen was intermittently loaded and thermocycled. The scanning electron microscope observation of sample sections showed that only the interfaces between restorative materials and dentin exhibited substantial deficiencies. The Komet ER Brasseler) exhibited the greatest percentages of continuity at the coronal (83.88%) or the radicular (78.12%) dentin levels, while the Zircon experimental post presented insufficient adaptation to the radicular 2125% continuity) and to the coronal 53.25% continuity) dentin. Seven of eight samples in the Komet group showed root fractures. The carbon-fiber post (Composipost) behaved satisfactorily (67.33% radicular continuity) in spite of the use of an older bonding agent formulation.
- Subjects
DENTIN; DENTAL adhesives; DENTAL pulp; DENTAL bonding; TEETH; DENTAL materials; DENTAL chemistry; DENTISTRY; PROSTHODONTICS
- Publication
International Journal of Prosthodontics, 1997, Vol 10, Issue 6, p498
- ISSN
0893-2174
- Publication type
Article