A previous study suggested that denture plaque played an etiologic role in denture stomatitis. In daily practice, it is important to instruct denture wearers about denture plaque control. In this study, the major areas of investigation were the degree of denture stomatitis and denture plaque, denture hygiene habits, wearing habits and age of present denture. 643 patients wearing dentures (1981-1988) were selected, from 47 to 91 years old. The following results were obtained. 1. About 50 percent of the 643 patients used brush for cleaning their dentures. The number of people wearing dentures during sleep was fewer than those who preferred removal of dentures during sleep. 2. Soaking dentures in denture cleanser reduced the degree of denture stomatitis and denture plaque. 3. The patients wearing dentures during sleep showed much more occurrence of denture stomatitis than those who had not that habit. 4. Denture stomatitis occurred frequently with increasing the age of the present denture. The present results indicate that the occurrence of denture stomatitis is closely related to the quality of the maintenance of denture.
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