Effects of thermoplastic retainers on occlusal contacts

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Dincer M., Aslan B.

EUROPEAN JOURNAL OF ORTHODONTICS, vol.32, no.1, pp.6-10, 2010 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 1
  • Publication Date: 2010
  • Doi Number: 10.1093/ejo/cjp062
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.6-10


No significant change was observed in the number of posterior contacts during T1, whereas a significant increase was found at T2 (P < 0.01) for the second premolars (P < 0.01) and second molars (P < 0.05). Both 'ideal' and 'non-ideal' contacts increased significantly but only at T2 (P < 0.05). The number of ideally located contacts on the posterior teeth at all three periods were lower than normal values (P < 0.01); while non-ideal contacts at T1 (P < 0.05) and T2 (P < 0.01) were found more often when compared with the values of normal subjects. Only the increased number of premolar contacts at T2 was more than normal values (P < 0.01). There was no expected increase in occlusal contacts at T2; however, posterior occlusal contacts were increased at T3.