Wednesday, 27 December 2017

Vibration does not speed up extraction space closure

I have blogged previously on appliances claiming to accelerate tooth movement and shorten orthodontic treatment. One of these is micro-vibration and an appliance using this principal is AcceleDent. I have previously researched this topic during initial alignment and now Part 2 has been published on extraction space closure.

I strongly believe in an evidence-supported approach to clinical practice and this study (as with all my research) was conducted in my orthodontic practice to answer the clinical question of whether this was a worthwhile technique to consider implementing for my own patients. Forty Class II adolescent patients planned to have premolar extractions in the upper arch were randomly assigned to using either the AcceleDent appliance or no appliance. The extraction space closure was measured over time so a rate of movement in mm/month could be calculated. So what did I find? There was no clinically (0.05 mm per month) or statistically significant difference in the rate of space closure (P = 0.74). Compliance was found to reduce over time and this is the subject of another paper to be published in the Journal of Clinical Orthodontics. However, even when compliance was accounted for there was still no clinically meaningful difference in the rate of space closure.

This article appears in the American Journal of Orthodontics and Dentofacial Orthopedics and anyone clicking on this link before February 14, 2018 will be taken directly to the final version of my article on ScienceDirect. No sign up, registration or fees are required – you can simply click, read and hopefully enjoy.