The mandibular response to occlusal relief using a flat guidance splintReportar como inadecuado

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international journal of stomatology and occlusion medicine

, Volume 6, Issue 4, pp 134–139

First Online: 17 September 2013Received: 21 May 2013Accepted: 05 August 2013


BackgroundThe mechanism of action of occlusal splints used for the successful treatment of temporomandibular disorders TMD remains unclear and controversial.

AimThe aim of this study was to observe the mandibular response during sleep bruxism SB on the elimination of occlusal influences by using a flat anterior and lateral guidance splint FGS.

Material and methodAny changes in mandibular movement patterns and condylar position with the introduction of this tool were measured. Current SB activity on the natural dentition was evaluated using a Brux Checker® BC and compared with the activity after insertion of an FGS in 153 subjects.

ResultThe spatial mandibular position changed individually with a tendency toward forward and downward movement. The insertion of an FGS led to a change in the topographical condyle-fossa relationship and seemed to create an -unloading- condition for the temporomandibular joint. It was found that increased angulation of the maxillar incisors was responsible for altered muscular activity during sleep.

ConclusionThe masticatory organ appears to self-regulate and to provide an oral behavior modification, which may be more physiological using the FGS as a compensating factor. In this context, it is assumed that sleep bruxism in terms of parafunctional activity is a physiological function of the masticatory organ. The results of this study indicate the importance of controlling anterior guidance in the functional reconstruction of human occlusion.

KeywordsSleep bruxism Tooth grinding Brux checker Temporomandibular joint Temporomandibular disorders Occlusal splint  Download fulltext PDF

Autor: G. Reichardt - Y. Miyakawa - T. Otsuka - S. Sato


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