[Oral health related quality of life among Iranian children: part II- condition-specific socio-dental impacts attributed to dental caries and periodontal diseases]

Given the high prevalence of dental caries and periodontal diseases and the importance of quality of life in clinical decision making, this study investigated the association between periodontal diseases and dental caries and the presence of condition-specific socio-dental impacts on quality of life attributed to these conditions among Iranian schoolchildren. Total of 310 11-14-yr-old students, attending middle schools in Tehran, Iran, were selected through stratified cluster sampling. First, they were interviewed using Child Oral Impacts on Daily Performances [Child-OIDP] index. An oral examination was conducted next and number of decayed teeth, OHI-S and bleeding on probing [BOP] were recorded. Statistical associations were tested using Independent sample t-test, Chi-square and Binary logistic regression tests. Dental caries and poor oral hygiene were significantly more common in boys than in girls [P=0.001 and P=0.000, respectively]. About 30.6% and 34.8% of children reported condition- specific socio-dental impacts attributed to periodontal diseases and dental caries, [CSI-periodontal and CSI- caries] respectively. Girls were 1.8 times more likely than boys to report the presence of CSI-periodontal. Brushing the teeth was significantly associated with the presence of CSI-caries and CSI-periodontal [P<0.05]. In addition, the relationship between dental caries and the presence of CSI- caries was significant [P<0.05]. BOP and OHI-S were not significantly associated with the presence of CSI-periodontal [P>0.05]. Dental caries, unlike BOP and OHI-S, was significantly associated with its corresponding CSI on quality of life among Iranian schoolchildren in Tehran. The Child-OIDP index can be used to assess the treatment needs attributed to dental caries in schoolchildren in Tehran

[Oral health related quality of life among Iranian children: Part I - Validity, reliability, prevalence and seventy assessment of daily impact factors]

Given the current need for studies evaluating oral health related quality of life among the Iranian children, this study was designed to test the validity and reliability of a Persian version of Child-OIDP index and also evaluate the prevalence and impact of oral disorders on the quality of life of 11-14-year-old Iranian children. In this cross-sectional study, after translation of Child-OIDP instrument into Persian language, the psychometric properties of this index were evaluated in terms of face, content and construct validity. In addition, the internal and test-retest reliability were evaluated. A sample of 384 Iranian children aged 11-14-years old completed the instrument via a face-to-face interview. Each interview was followed by a clinical examination as well as completion of a self-administered questionnaire providing the information on demographic and oral health behaviors. The Persian version of Child-OIDP demonstrated excellent validity and reliability. The index showed significant associations between perceived oral treatment needs and perceived satisfaction regarding their oral cavity [P<0.001]. ICC was 0.784, and Cronbacrf s alpha was 0.59. About 54% of children reported dental disorders over the past 3 months that impacted on daily performances, according to Child-OIDP index. The most prevalent affected activities were eating and oral hygiene performance. The most prevalent oral disorder leading to impact were sensitivity tooth and gingival bleeding. Based on the results of this study, it can be concluded that the Persian version of Child-OIDP index is a valid and reliable instrument for evaluation of oral health-related quality of life as applied to Iranian children. The prevalence of oral impacts was moderate. The pattern of impacts differed according to the type of self-perceived oral problem