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Evaluation of visual pedagogy in improving plaque control and gingival inflammation among preschool children with Autism Spectrum Disorder: An interventional study.

BACKGROUND: Visual pedagogy (VP) is a behavioural intervention used to facilitate learning among autistic children. Limited studies have evaluated VP when applied to dentistry.

AIM: Evaluate the effectiveness of VP in improving oral hygiene and gingival health status of autistic children.

DESIGN: The interventional study was conducted among 122 autistic preschool children and their parents in Hong Kong. Toothbrushing visual pedagogy (TBVP) were provided to parents for supervising their children with toothbrushing at home. The children's sociodemographic background, developmental profile, clinical parameters were obtained via parental questionnaire, standardised assessment form and clinical examination respectively. The change in plaque and gingival indices over time, and potential confounding factors were evaluated with Friedman's Two-Way Analysis and logistic regressions respectively.

RESULTS: Significantly lower level of plaque and gingival inflammation were found at 3 months and 6 months than baseline. The oral health status of children with poorer baseline oral hygiene status and gingival health were more likely to improve with TPVP. Other developmental and socioeconomic backgrounds had insignificant associations on the improvement of these clinical parameters.

CONCLUSION: The findings suggest TBVP is effective in promoting oral hygiene maintenance and improving the periodontal conditions among individuals diagnosed with ASD.

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