The purpose of this study was to set up a questionnaire for evaluating the masticatory ability and the change of the masticatory ability of complete denture wearers. Twenty kinds of food were selected from Uchida's 100 foods and the masticatory ability and the change of masticatory ability of 145 complete denture wearers were scored.
The following results were drawn from the data:
1. The scores of the masticatory ability and the change of the masticatory ability obtained from chewing aspect of 20 foods were the same as the scores obtained from 100 foods.
2. The masticatory scores were associated with the maximal bite force of the patients.
3. The average score of the masticatory ability with new dentures was significantly higher than with present dentures.
4. The scores of the change of the masticatory ability between the new denture and the present denture were associated with the scores of the masticatory ability of the present denture.