The effect of drill-free and drilling methods on the stability of mini-implants under early orthodontic loading in adolescent patients

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TÜRKÖZ Ç., ATAÇ M. S., TUNCER C., BALOŞ TUNCER B., Kaan E.

EUROPEAN JOURNAL OF ORTHODONTICS, vol.33, no.5, pp.533-536, 2011 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1093/ejo/cjq115
  • Journal Name: EUROPEAN JOURNAL OF ORTHODONTICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.533-536
  • Gazi University Affiliated: Yes

Abstract

The aim of this study was to compare the stability of mini-implants using drill-free and drilling methods, both before and after early force loading. Sixty-two adolescent patients (24 males and 38 females, mean age 15.7+/-4.2 years) were randomly assigned to three groups and 112 titanium mini-implants were placed between the upper first molars and second premolars to achieve molar distalization. Groups I (n = 22) and II (n = 20) received pilot drilling with diameters of 1.1 and 0.9 mm, respectively, while the drill-free method was used in group III (n = 20). Distalization forces of up to 200 g were applied with nickel-titanium (NiTi) open coil springs. The Z-test was used for statistical analyses to compare the success rates of the groups with each other.