Premium
The influence of local anaesthesia and occlusal surface area on the forces developed during repetitive maximal clenching efforts
Author(s) -
Steenberghe D.,
Vries J. H.
Publication year - 1978
Publication title -
journal of periodontal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.31
H-Index - 83
eISSN - 1600-0765
pISSN - 0022-3484
DOI - 10.1111/j.1600-0765.1978.tb00179.x
Subject(s) - premolar , molar , orthodontics , medicine , stimulation , anesthesia , dentistry
With local anaesthesia seven out of nine volunteers developed increased clenching forces during successive efforts with two antagonistic teeth. The magnitude of the increase could not be evaluated, as most subjects had to be prevented from clenching any harder, in order to avoid damage. When a dynamometer was adapted bilaterally to several premolar and molar teeth, greater forces were developed than with the dynamometer adapted to two antagonists. This could be a result of decreased periodontal and/or pulpal receptor stimulation. In the former case, maximum clenching value was reached immediately, and the force remained almost constant during following clenching efforts. Both experiments substantiate the hypothesis that periodontal and/or intradental receptors have a negative feed‐back on the activity of jaw closing muscles.