Transcultural Adaptation and Validation to Spanish of the POQL Instrument in Children Aged 6 to 12 Years

Background and Objectives: Oral health is an important component of overall health, including in children, since dental caries is the most frequent oral health condition in this demographic. It affects children's daily performance and can lead to complications ranging from moderate discomfort to highly disabling problems, which are reflected in their quality of life. Validating instruments that provide reliable information to measure how oral health impacts children's quality of life will help prioritize the management of these problems through personalized treatments. The aim of this study was to perform transcultural adaptation and Spanish validation of a POQL instrument in children aged 6 to 12 years who attended the Pediatric Dentistry Clinic at the Universidad Autónoma de Ciudad Juárez (UACJ), and to establish an association between the presence of carious lesions and the quality of life of children. Materials and Methods: We conducted a validation study involving a sample of 379 children aged 6 to 12 years who were attending the Pediatric Dentistry Clinic at the Universidad Autónoma de Ciudad Juárez. The instrument, adapted into Spanish, was applied to measure oral health-related quality of life, and the clinical diagnosis of caries was established using the ICDAS II system. Results: The mean age of the children was 8.51 years ± 1.64; 50.4% were boys and 49.6% girls. A total of 45.9% of the children presented caries with ICDAS II codes 5 and 6, corresponding to a severe stage with advanced tooth destruction, and 52% of the children reported their perception of their oral health-related quality of life as good. In the bivariate statistical analysis, the chi-square test showed no relationship between moderate and severe ICDAS II stages and the children's perception of their quality of life, resulting in a very low Spearman correlation. Conclusions: The findings suggest that this instrument may represent a reliable and valid tool for use in children aged 6 to 12 years. The observed association between different degrees of carious lesions and children's quality of life may reflect the close relationship between oral health and important psychosocial domains, including physical, emotional, and social development, which constitute the core dimensions evaluated by the POQL instrument.