Retention behaviors of different attachment systems: Precious versus non-precious, precision versus semi-precision

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Gözneli R. , Yıldız C. , Vanlioglu B., Evren B. , Kulak-Ozkan Y.

DENTAL MATERIALS JOURNAL, vol.32, pp.801-807, 2013 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 32
  • Publication Date: 2013
  • Doi Number: 10.4012/dmj.2013-003
  • Page Numbers: pp.801-807


The aims of this study were to investigate the retention force changes of different attachment systems after 10,000 insertion-separation cycles and the difference in retention force between precious and non-precious materials of the same attachment system. Four types of attachments (Ball, Rod, M3 stud, and AP-Piccolino), produced using both precious and non-precious metal alloys, were tested (n=6). Data were analyzed using analysis of variance (ANOVA), Tukey's multiple comparison test, and t-test at a significance level of p <= 0.05. Retention forces of all attachment types were significantly decreased after 10,000 insertion-separation cycles (p <= 0.05). Rod and M3 attachment systems showed an initial increase in retention force, then an eventual decrease. At the end of the test, precious types of M3 and AP-Piccolino attachments had significantly higher retention force values than their non-precious ones (p <= 0.05). Friction between non-precious attachment parts resulted in a higher retention loss than precious metal alloys.