This study investigates the link between dietary acid load and oral health-related quality of life in 374 high school students (226 females, 148 males). Participants completed a demographic questionnaire, the OHIP-14 scale, and provided 24-hour dietary recalls. Dietary acid load was assessed using PRAL and NEAP calculations. Data analysis was performed with SPSS 24 to explore the impact of diet composition on adolescents' oral health.

This scale was used to assess the quality of life related to oral health and how oral health affects overall quality of life and general health.

The scale consists of 14 items with 5-point Likert-type questions (each option ranging from 0 to 4 points) and was designed using a five-choice scaling method. It was concluded that as the total score increased, the severity of the problem also increased, leading to a decrease in quality of life.

Dietary acid load (DAL), potential renal acid load (PRAL), and net endogenous acid production (NEAP) were calculated based on the 24 hours food consumption record The formula for PRAL is as follows:

PRAL (mEq/day) = 0.4888 x protein (g/day) +0.0366 x phosphorus (mg/day)-0.0205 x potassium (mg/day) - 0.0125 x calcium (mg/day) - 0.0263 x magnesium (mg/day) NEAP (mEq/day) = [54.5 x protein (g/day) / potassium (mEq/day)] - 10.2 High and positive PRAL and NEAP values indicate a high dietary acid load.

Sociodemographic characteristics will be assessed using a structured questionnaire developed by the researchers. The questionnaire will include items measuring age, gender, education level, and income status. The results will be presented as numbers and percentages for each characteristic.