The Validity of Rating Scale Methods to Measure Patients' Satisfaction on Prosthetic Treatment with Removable Dentures.

The purpose of this study was to investigate the validity of some rating scale methods to measure patients' satisfaction on prosthetic treatment with removable dentures. Each group of 102 Full denture weareres, 95 A-P denture weareres, and 106 P denture weareres was analyzed. Applying the quantification method of the third type, the characteristics of patients' satisfaction in each denture group was investigated on content and strength.The following results were obtained.1. The criteria for rating as dissatisfied, a little dissatisfied, mindless, satisfied, or very satisfied provided for each item were proper related to content of patients' satisfaction on Full denture, but not so on A-P and P denture.2. The valid critetia of scales on content and strength were 3 grades rating as “dissatisfied or a little dissatisfied”, “mindless”, or “satisfied or very satisfied” on Full denture, “dissatisfied, a little dissatisfied, or mindless”, “satisfied”, or “very satisfied” on A-P denture. On P denture, these were 4 grades rating as “dissatisfied”, “a little dissatisfied or mindless”, “satisfied”, or “very satisfied”.3. It is considered that the reliability of scores assingned to rating grades should have to be enhanced to measure content and strength of patients' satisfaction.