PMID- 16900814 OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Prosthodont JT - The International Journal of Prosthodontics IS - 1942-4426 (Electronic) IS - 0893-2174 (Print) IP - 4 VI - 19 PST - ppublish DP - 2006 PG - 330-332 LA - en TI - In Vitro Wear of Different Material Combinations of Intracoronal Precision Attachments FAU - Holst, Stefan AU - Holst S FAU - Blatz, Markus B. AU - Blatz M FAU - Eitner, Stephan AU - Eitner S FAU - Wichmann, Manfred AU - Wichmann M CN - AB - Purpose: This study examined the retentive forces of intracoronal precision attachments after wear cycling. Materials and Methods: Three material combinations of an intracoronal cylindric T-attachment were tested. A total of 10,000 separating and joining movements were performed, and retentive forces were measured. Results: Components made of gold alloy performed significantly better (P = .002) than other materials. The average proportional loss of retention was 90% for titanium and 47% for gold alloy components. Conclusion: Cyclic loading of metal precision attachment components results in loss of retention, which can be fully compensated by reactivating internal screws in the patrices. Machined, high-noble gold alloys show less wear than other materials. AID - 848828