This prospective clinical study aimed to evaluate the effects of dental treatment on masticatory performance and food preferences in children during the mixed dentition period. A total of 100 children aged 6 to 9 years were included and categorized into three groups based on the Caries Assessment Spectrum and Treatment (CAST) index (CAST 5, 6, and 7). Masticatory performance was objectively assessed using a two-coloured chewing gum mixing test (Vivident Fruit Swing) and analyzed with ViewGum© software by calculating the Variance of Hue (VOH) value. Assessments were performed before and three months after dental treatment. Additional variables such as posterior occlusal contacts, body mass index (BMI), and pain scores were also recorded. The study aimed to determine the improvement in masticatory function and the potential association between oral rehabilitation and food preference changes in children during the mixed dentition period.

Inclusion Criteria:

• Children aged 6 to 9 years in the mixed dentition period Presence of dental caries categorized as CAST codes 5, 6, or 7 Children with fully erupted permanent first molars Medically healthy children (ASA I) Cooperative or manageable with nonpharmacological behavior guidance techniques Written informed consent obtained from parents or legal guardians

Exclusion Criteria:

• Children with systemic or neurological disorders affecting mastication or swallowing History of orthodontic or prosthetic treatment Presence of temporomandibular joint dysfunction Use of medications influencing salivary flow or muscle activity Uncooperative children for whom the chewing test could not be standardized