• Thidarat Nuansri D.D.S., M.Sc.
• Songchai Thitasomakul D.D.S., Ph.D.

Objective To assess validity and reliability of a cross-cultural adaptation CPQ_11-14 and to explore
association of oral health related quality of life and oral health status in primary school children.

Materials and methods CPQ_11-14 was culturally adapted to a Thai-version. Then, it was tested for
face validity, construct validity and rearranged to form 4 new domains, namely mental and social, pain
and discomfort, communication and learning domain. Internal reliability, external reliability and
concurrent validity were also analyzed. It was administered in 481 samples. CPQ_11-14 total scores
were collected and the association between oral health related quality of life and dental caries and
gingivitis was explored.

Results Of all children, 96.85% perceived the oral health impact on quality of life, given mean
CPQ_11-14 total scores of 10.11 ± 8.33 (full marks 120). Ninety eight point seven zero percent had
dental caries in permanent teeth with DMFS at 12.44 surface/person, initial caries at 10.48 surface/
person and severe caries at 1.53 surface/person. Childrenûs quality of life scores were associated with
prevalence and severity of dental caries in every domain. The most affected domain was communication,
while pain and discomfort was affected when children have severe dental caries and finally impacted
on learning. Ninety nine point five four percent of children had gingivitis but it was not associated with
CPQ_11-14 score.

Conclusion The cross-cultural adaptation of CPQ_11-14 is able to assess the oral health-related
quality of life of primary school children. The level of perception of quality of life varied according to
the level of dental caries severity.

(CU Dent J. 2014;37:327-40)