The purposes of this study were to survey oral status, oral health-related quality of life and to determine
relationship between oral status and oral health-related quality of life of early privates in the southern of Thailand.
Study design was a cross-sectional analytical study. Samples were recruited by multistage random sampling from
the second period in 2016 with 2 years of conscription. Data were collected by oral examination and questionnaire
interviewing. The oral health-related quality of life questionnaire was tested on content validity and reliability. The
results showed that 246 early privates had mean age 21.9±1.1 years old. The prevalence of decay, retained root, DMFT
and impacted tooth were 81.3 %, 40.7 %, 85 % and 32.5 % respectively. Their mean decay, retained root, DMFT and impacted tooth were 4.2, 0.9, 5.1 and 0.5 teeth/person respectively. The mean of total OHIP-14 score was
8.25±8.73. Physical pain and psychological discomfort were the most affected dimension. Oral status that associated
with oral health-related quality of life were retained root and impacted tooth. In conclusion, early privates with 2
years of conscription had many oral status problems, which associated with oral health-related quality of life. Early
privates who had retained root or impacted tooth had worsen oral health-related quality of life.