Temporary change and recovery of occlusal contact pattern after wearing occlusal stabilization splint.

OGAWA Takahiro, SUMIYOSHI Keita, UMEMOTO George, KOYANO Kiyoshi

doi:10.11246/gakukansetsu1989.10.410

This study was performed to investigated the effect of wearing an occlusal splint on the pattern of occlusal contact in the intercuspal position. Ten healthy young adults were randomly selected from among the 1st and 2nd year undergraduate students of the Faculty of Dentistry. Five out of ten subjects were placed in the control group, and the other five in the a splint group. A full maxillary stabilization splint made of heat-cured acrylic resin was worn by each splint-group subject for 9 hours. Before and after wearing an occlusal splint, the presence or absence of an interocclusal contact of each tooth was examined using mylar shim shock in the intercuspal position that a subject performed. Bite feeling of a subject was also examined using a visual analog scale. The examination was performed by blinded examiners over the period of 2 hours after removing a splint. The analysis of the proportion of agreement between the control and splint groups showed that the pattern of occlusal contact and bite feeling significantly changed after wearing an occlusal splint (p<0.05). However, the pattern of occlusal contact recovered within one hour, and bite feeling within 2 hours in all splint-group subjects. Therefore, irreversible change of the pattern of occlusal contact does not occur by the intermittent use of an occlusal stabilization splint. In other words, the constant use of the splint may cause a permanent change of the pattern of occlusal contact, suggesting careful consideration to its clinical application.

Temporary change and recovery of occlusal contact pattern after wearing occlusal stabilization splint.

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