Effectiveness of part-time vs full-time wear protocols of Twin-block appliance on dental and skeletal changes: A randomized controlled trial.
dc.contributor.author | Parekh, J | |
dc.contributor.author | Counihan, K | |
dc.contributor.author | Fleming, PS | |
dc.contributor.author | Pandis, N | |
dc.contributor.author | Sharma, PK | |
dc.date.accessioned | 2019-03-27T15:30:14Z | |
dc.date.available | 2018-07-01 | |
dc.date.available | 2019-03-27T15:30:14Z | |
dc.date.issued | 2019-01-31 | |
dc.identifier.citation | Parekh, J., et al. (2019). "Effectiveness of part-time vs full-time wear protocols of Twin-block appliance on dental and skeletal changes: A randomized controlled trial." American Journal of Orthodontics and Dentofacial Orthopedics 155(2): 165-172. | en_US |
dc.identifier.issn | 0889-5406 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/56520 | |
dc.description.abstract | INTRODUCTION: The aim of this 2-arm parallel study was to compare the dentoalveolar and skeletal changes achieved with Twin-block appliance therapy prescribed on either a part- or full-time basis for 12 months. METHODS: Sixty-two 10- to 14-year-old patients were randomly allocated to either full-time (FT, 22 hours daily) or part-time (PT, 12 hours daily) wear of a modified Twin-block appliance. Participants were recruited from the Institute of Dentistry, Barts and the London School of Medicine and Dentistry, London, United Kingdom, and recalled at 6- to 8-week intervals. Electronic randomization was undertaken, with group allocation concealed using opaque, sealed envelopes. The outcome assessor was blinded; however, it was not feasible to blind either operator or patients. Study models and cephalograms were taken at baseline and after 12 months of treatment. RESULTS: Data from 55 of the 62 participants were analyzed. Overjets were reduced by 7 mm (SD, 2.92) in the PT group and 6.5 mm (SD, 2.62) in the FT group, with no statistical difference between the groups (P = 0.587; 95% CI, -1.01, 1.78). Similarly, no clinical or statistical differences were noted for skeletal changes: ANB angle (PT, -1.51°; FT, -1.25°; P = 0.828; 95% CI, -0.68, 0.849), pogonion-sella vertical (PT, 3.25 mm; FT, 3.35 mm) or A-sella vertical (PT, 1.28 mm; FT, 1.06 mm). Mean wear durations were 8.78 hours a day in the PT group and 12.38 hours in the FT group. CONCLUSIONS: There was no difference in either dental or skeletal changes achieved with PT or FT wear of a Twin-block appliance over 12 months. Less onerous PT wear regimens may therefore be a viable alternative to FT wear of removable functional appliances. REGISTRATION: NCT02190630. PROTOCOL: The protocol was not published before trial commencement. | en_US |
dc.format.extent | 165 - 172 | |
dc.language | eng | |
dc.language.iso | en | en_US |
dc.publisher | Elsevier/Science Direct | en_US |
dc.relation.ispartof | Am J Orthod Dentofacial Orthop | |
dc.rights | CC-BY-NC ND | |
dc.subject | Child | en_US |
dc.subject | Female | en_US |
dc.subject | Humans | en_US |
dc.subject | Jaw | en_US |
dc.subject | Male | en_US |
dc.subject | Orthodontic Appliances, Functional | en_US |
dc.subject | Single-Blind Method | en_US |
dc.subject | Time Factors | en_US |
dc.subject | Tooth Movement Techniques | en_US |
dc.subject | Treatment Outcome | en_US |
dc.title | Effectiveness of part-time vs full-time wear protocols of Twin-block appliance on dental and skeletal changes: A randomized controlled trial. | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1016/j.ajodo.2018.07.016 | |
pubs.author-url | https://www.ncbi.nlm.nih.gov/pubmed/30712687 | en_US |
pubs.issue | 2 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
pubs.volume | 155 | en_US |
dcterms.dateAccepted | 2018-07-01 | |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |