Reflex responses induced by tooth unloading.

Abstract:

:The reflex response of the masseter muscle to the rapid unloading of a single maxillary incisor tooth was studied. Unloading of a static force of 2 N in the horizontal direction resulted in a short-latency excitation, inhibition, and long-latency excitation of masseter muscle activity occurring at latencies of approximately 13, 20, and 40 ms, respectively, with a corresponding change in bite force occurring slightly later in each case. Following the blocking of periodontal input by the injection of local anesthetic around the stimulated tooth, inhibitory responses were abolished. Therefore, it is concluded that the observed masseteric inhibition was caused by the unloading of periodontal mechanoreceptors and thus that these receptors may contribute to the jaw unloading reflex.

journal_name

J Neurophysiol

authors

Türker KS,Jenkins M

doi

10.1152/jn.2000.84.2.1088

subject

Has Abstract

pub_date

2000-08-01 00:00:00

pages

1088-92

issue

2

eissn

0022-3077

issn

1522-1598

journal_volume

84

pub_type

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