Measurement and comparison of bracket transfer accuracy of five indirect bonding techniques

Ana E. Castilla, Jennifer J. Crowe, J. Ryan Moses, Mansen Wang, Jack L. Ferracane, David A. Covell

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


Objective: To measure and compare bracket transfer accuracy of five indirect bonding (IDB) techniques. Materials and Methods: Five IDB techniques were studied: double polyvinyl siloxane (double- PVS), double vacuum-form (double-VF), polyvinyl siloxane vacuum-form (PVS-VF), polyvinyl siloxane putty (PVS-putty), and single vacuum-form (single-VF). Brackets were bonded on 25 identical stone working models. IDB trays were fabricated over working models (n 5 5 per technique) to transfer brackets to another 25 identical stone patient models. The mesiodistal (M-D), occlusogingival (O-G), and faciolingual (F-L) positions of each bracket were measured on the working and patient models using digital photography (M-D, O-G) and calipers (F-L). Paired t-tests were used to compare bracket positions between working and patient models, and analysis of variance was used to compare bracket transfer accuracy among the five techniques. Results: Between the working and patient models, double-VF had the most teeth with significant differences (n 5 6) and PVS-VF the fewest (n 5 1; P , .05). With one exception, all significant differences were #0.26 mm and most (65%) were #0.13 mm. When the techniques were compared, bracket transfer accuracy was similar for double-PVS, PVS-putty, and PVS-VF, whereas double-VF and single-VF showed significantly less accuracy in the O-G direction. Conclusions: Although overall differences in bracket position were relatively small, silicone-based trays had consistently high accuracy in transferring brackets, whereas methods that exclusively used vacuum-formed trays were less consistent. (Angle Orthod. 2014;84:607-614.)

Original languageEnglish (US)
Pages (from-to)607-614
Number of pages8
JournalAngle Orthodontist
Issue number4
StatePublished - Jul 2014


  • Bracket bonding accuracy
  • Indirect bonding

ASJC Scopus subject areas

  • General Medicine


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