2017 Volume 32 Issue 2 Pages 80-88
Purpose：The purpose of this study was to clarify how denture conditions affect the effect of denture adhesive.
Methods：The subjects were divided into two groups, with 10 subjects in each group. The subjects in group G had good denture retention and stability, whereas the subjects in group P had poor denture retention and stability. Maximum occlusal force, total occlusal force, mastication ability, and QOL（General Oral Health Assessment Index：GOHAI）associated with the oral cavity were measured. For maximum occlusal force, a region corresponding to both sides of the central incisor and first molar of the habitual mastication side was measured as denture retention. For total occlusal force, maximum occlusal force of the entire dentition was measured. For mastication ability, dissolution of glucose was measured by chewing a gummy candy. For QOL（GOHAI）associated with the oral cavity, the subjects were asked to answer 12 questionnaire items.
Results：Group G showed significantly higher psychosocial and total scores for GOHAI after using the denture adhesive compared to that before using the adhesive. Group P showed significantly higher denture retention for a region corresponding to the central incisor and first molar, total occlusal force, and psychosocial and total scores for GOHAI after using denture adhesive compared to that before using the adhesive.
Conclusions：Using denture adhesive for dentures with good retention and stability contributed to improving subjective evaluations. For dentures with poor retention and stability, retention, occlusal force, and subjective evaluations improved but no contribution to mastication ability was seen.
