Kumar V, Batra P, Sharma K, Raghavan S, Srivastava A. Comparative assessment of the rate of orthodontic tooth movement in adolescent patients undergoing treatment by first bicuspid extraction and en mass retraction, associated with low-frequency mechanical vibrations in passive self-ligating and conventional brackets: A randomized controlled trial.
Int Orthod 2020;
18:696-705. [PMID:
33162347 DOI:
10.1016/j.ortho.2020.08.003]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND
Low-frequency vibrations are one of the many non-surgical modalities aimed at increasing the rate of orthodontic tooth movement.
OBJECTIVE
The present trial was conducted to assess the efficacy of low-frequency vibrations in increasing the rate of orthodontic tooth movement in adolescent patients undergoing fixed mechanotherapy with passive self-ligating brackets and conventional brackets.
MATERIALS AND METHODS
Setting and sample population: department of orthodontics and dentofacial orthopaedics in a nationally accredited dental college. Participants, study design and methods: 65 patients were randomly allocated to three groups. Two experimental groups consisted of passive self-ligating and conventionally ligated appliances received low-frequency vibrations. The control group did not receive any vibrations. Allocation ratio was 1:1:1.32. Eligibility criteria: adolescent patients with sound and healthy dentition, incisor irregularity<5mm.
PRIMARY OUTCOME
rate of orthodontic tooth movement in mm/month. Randomization and blinding: computer-generated random allocation sequencing was done and data assessor was blinded.
STATISTICS
the Q-Q plot and Shapiro-Wilks test judged the normality of the data. The parametric test included ANCOVA and post-hoc analysis.
RESULTS
No statistically significant enhancement of tooth movement was seen in the experimental groups, when comparison was done with the control group P>0.05. Comparison between the two experimental groups did not reveal any significant difference either.
CONCLUSION
No statistically significant increase of orthodontic tooth movement was seen with low-frequency vibrations and the mode of ligation did not have any effect in increasing the rate of tooth movement either.
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