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 - 11/12/20
, Sreevatsan Raghavan, Amit SrivastavaBienvenue sur EM-consulte, la référence des professionnels de santé.
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Highlights |
• | There is ambiguity regarding the role of low-frequency vibrations in orthodontics. |
• | Low-frequency vibrations do not appear to accelerate orthodontic tooth movement. |
• | Low-frequency vibrations in association with passive self-ligating appliance do not appear to accelerate orthodontic tooth movement. |
• | Custom-made vibration device was used. |
• | Custom-made device vibrated at 30Hz with 20gms force. |
Summary |
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.
Le texte complet de cet article est disponible en PDF.Keywords : Vibration, Periodontal accelerated orthodontic tooth movement, Tooth movement techniques, Osteocytes, Bone remodelling
Plan
Vol 18 - N° 4
P. 696-705 - décembre 2020 Retour au numéro
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