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Comparison of maxillary arch dimensional changes with passive and active self-ligation and conventional brackets in the permanent dentition: a multicenter, randomized controlled trial.
Am J Orthod Dentofacial Orthop. 2013 Aug; 144(2):185-93.AJ

Abstract

INTRODUCTION

The purpose of this study was to compare maxillary arch dimensional and inclination changes during alignment with conventional brackets and self-ligation.

METHODS

Ninety-six patients, ages 16 years and above, were included in this multicenter, 3-group parallel randomized trial. The main outcome measures were changes in maxillary intercanine, interpremolar, and intermolar dimensions, and molar and incisor inclination changes. The patients were randomly allocated in permuted blocks of 12 subjects into 3 equal groups with the allocations concealed in opaque sealed envelopes. Each participant underwent alignment with a standard Damon Q (Ormco, Orange, Calif) wire sequence for a minimum of 34 weeks. Blinding of clinicians and patients was not possible. Data were analyzed on a per-protocol basis, since losses to follow-up were minimal.

RESULTS

Complete data were obtained from 87 subjects. Bracket type had no significant effect on any of the transverse dimensional changes. No difference in molar inclination was found between passive self-ligation and conventional brackets (0.67°; 95% CI, -2.24, 3.58; P = 0.65) or active self-ligation (0.91°; 95% CI, -1.95, 3.78; P = 0.53). Similarly, incisor inclination changes with the Damon Q could not be differentiated from those developing with either conventional system (0.44°; 95% CI, -1.93, 2.8; P = 0.71) or In-Ovation C (-0.22°; 95% CI, -2.58, 2.14; P = 0.85). No harms were encountered.

CONCLUSIONS

No difference in the arch dimensional or inclination changes during alignment can be expected between conventional brackets and either active or passive self-ligation.

Authors+Show Affiliations

Queen Mary University of London, Institute of Dentistry, Barts and the London School of Medicine and Dentistry, London, United Kingdom. padhraig.fleming@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Multicenter Study
Randomized Controlled Trial

Language

eng

PubMed ID

23910199

Citation

Fleming, Padhraig S., et al. "Comparison of Maxillary Arch Dimensional Changes With Passive and Active Self-ligation and Conventional Brackets in the Permanent Dentition: a Multicenter, Randomized Controlled Trial." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 144, no. 2, 2013, pp. 185-93.
Fleming PS, Lee RT, Marinho V, et al. Comparison of maxillary arch dimensional changes with passive and active self-ligation and conventional brackets in the permanent dentition: a multicenter, randomized controlled trial. Am J Orthod Dentofacial Orthop. 2013;144(2):185-93.
Fleming, P. S., Lee, R. T., Marinho, V., & Johal, A. (2013). Comparison of maxillary arch dimensional changes with passive and active self-ligation and conventional brackets in the permanent dentition: a multicenter, randomized controlled trial. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 144(2), 185-93. https://doi.org/10.1016/j.ajodo.2013.03.012
Fleming PS, et al. Comparison of Maxillary Arch Dimensional Changes With Passive and Active Self-ligation and Conventional Brackets in the Permanent Dentition: a Multicenter, Randomized Controlled Trial. Am J Orthod Dentofacial Orthop. 2013;144(2):185-93. PubMed PMID: 23910199.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of maxillary arch dimensional changes with passive and active self-ligation and conventional brackets in the permanent dentition: a multicenter, randomized controlled trial. AU - Fleming,Padhraig S, AU - Lee,Robert T, AU - Marinho,Valeria, AU - Johal,Ama, PY - 2013/02/01/received PY - 2013/03/01/revised PY - 2013/03/01/accepted PY - 2013/8/6/entrez PY - 2013/8/6/pubmed PY - 2013/11/6/medline SP - 185 EP - 93 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 144 IS - 2 N2 - INTRODUCTION: The purpose of this study was to compare maxillary arch dimensional and inclination changes during alignment with conventional brackets and self-ligation. METHODS: Ninety-six patients, ages 16 years and above, were included in this multicenter, 3-group parallel randomized trial. The main outcome measures were changes in maxillary intercanine, interpremolar, and intermolar dimensions, and molar and incisor inclination changes. The patients were randomly allocated in permuted blocks of 12 subjects into 3 equal groups with the allocations concealed in opaque sealed envelopes. Each participant underwent alignment with a standard Damon Q (Ormco, Orange, Calif) wire sequence for a minimum of 34 weeks. Blinding of clinicians and patients was not possible. Data were analyzed on a per-protocol basis, since losses to follow-up were minimal. RESULTS: Complete data were obtained from 87 subjects. Bracket type had no significant effect on any of the transverse dimensional changes. No difference in molar inclination was found between passive self-ligation and conventional brackets (0.67°; 95% CI, -2.24, 3.58; P = 0.65) or active self-ligation (0.91°; 95% CI, -1.95, 3.78; P = 0.53). Similarly, incisor inclination changes with the Damon Q could not be differentiated from those developing with either conventional system (0.44°; 95% CI, -1.93, 2.8; P = 0.71) or In-Ovation C (-0.22°; 95% CI, -2.58, 2.14; P = 0.85). No harms were encountered. CONCLUSIONS: No difference in the arch dimensional or inclination changes during alignment can be expected between conventional brackets and either active or passive self-ligation. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/23910199/Comparison_of_maxillary_arch_dimensional_changes_with_passive_and_active_self_ligation_and_conventional_brackets_in_the_permanent_dentition:_a_multicenter_randomized_controlled_trial_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(13)00332-6 DB - PRIME DP - Unbound Medicine ER -