Effect on mastication of experimental occlusal interferences in rats

概要

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The methods of creating experimental occlusal interferences in animals have been used to study masticatory dysfunction. However the relation between the height of the occlusal interference and masticatory function has not been clarified in rats. We investigated the mastication and swallowing of raw rice in rats that had various heights of occlusal interferences. Aluminum laminates of 0.5 mm, 1.0 mm and 2.0 mm thickness were used to create experimental interferences. The gastric contents of animals were sieved. The ratio of the dry weight of the rice particles on the 10-mesh sieve to the collected samples was calculated, and the average value for each group was compared. There was no significant difference in the average values of the ratio between the control and 0 mm groups or among the 0, 0.5, 1.0 and 2.0 mm groups. These results indicated that neither the severity of the interferences nor the use of general anesthesia at the time of cementation of the aluminum laminates influenced the grinding efficiency of mastication.
大阪歯科学会の論文