Periodontal Mechanoreceptors Stimulated Study of Human Masseter Reflex Control Prior and During Fixed and Functional Orthodontic Appliance Therapy

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Original Article

Author Details : Jayanthi M S*, Selvarani R , S. Premkumar

Volume : 2, Issue : 4, Year : 2018

Article Page : 33-38

https://doi.org/10.18231/j.jco.2018.038

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Abstract

Background: The role of periodontal mechanoreceptors (PMRs) in the reflex control of the jaw muscles has been mainly derived from animal studies and few human studies. This study investigated the response of the PMRs in the activity of the masseter muscles in humans to controlled orthogonal stimulation of the upper left central incisor, both before and during orthodontic treatment.
Materials and methods: Surface EMG of sixteen neurologically normal male subjects (mean age 13.2) were recorded following a rapid stimuli of 3Newtons. 8 class II patients with retrognathic mandible were treated with twin block and 8 class I patients were treated with pre adjusted fixed appliance. Pre-treatment and during treatment EMG of masseter with stimulus in rest position without splint and with both stimulus and splint.
Results: The class I subjects showed a statistically significant (p<0> Conclusions: This study has shown that periodontal mechanoreceptors supply information regarding position and forces applied to the tooth. Large scale studies are needed to validate these findings.
Keywords: Periodontal mechanoreceptors, Masseteric reflex and tooth movement.

How to cite : Jayanthi M S, Selvarani R, Premkumar S, Periodontal Mechanoreceptors Stimulated Study of Human Masseter Reflex Control Prior and During Fixed and Functional Orthodontic Appliance Therapy. J Contemp Orthod 2018;2(4):33-38

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