This study aimed to present the process of cross-cultural adaptation to develop to a Thai version of the
Patient’s Denture Assessment (PDA-T) from the Japanese original version. It is a self-assessment for the patients
who wear complete dentures to evaluate six aspects, which are Function, Esthetics and Speech, Lower Denture,
Expectation of Improvements with New Dentures, Upper Denture, and the Importance of Complete Dentures to
the Patient. Then, check for the content validity with the face validity. Using this assessment can be beneficial in
making a diagnosis, determining the prognosis, and comparing the efficacy of a complete denture (before and after
the treatment). Each question is measured using a horizontal 100-mm visual analog scale (VAS). However, an extra
question is added into the Thai version. The content validity and face validity were assessed in a sampling of 33
people (11 males and 22 females with an average age of 70.36 years old). The participants were instructed to read
each question and mark an outcome to represent their situations by a vertical line through the horizontal VAS in
each question. The PDA-T indicated good content validity after the initial test. Further research is recommended
for the process of the psychometric, reliability, validity and responsiveness properties of the PDA-T.