Dental caries and PROP genetic taste predisposition in UAE 7-10 years old

The present study aimed to assess the prevalence of tasters and non-tasters among children using a 6-n-propylthiouracil (PROP) taste test, and to investigate the association between taste predisposition, caries experience severity, oral hygiene practices, and dietary habits.

200 children aged 7-10 years underwent a PROP filter paper taste test. Dental caries experience was assessed using the ICDAS system, and data on oral hygiene and dietary habits were collected via a questionnaire. A training form was implemented to ensure comprehension of the general labelled magnitude (gLMS) scale. Scores on this scale were used to categorise individuals into super-tasters, medium tasters, and non-tasters.

Super-tasters were the most prevalent genetic taste sensitivity phenotype (54.0%), followed by non-tasters (23.5%) and medium tasters (22.5%). Non-tasters demonstrated higher caries experience and severity, compared to tasters (p < 0.001). Non-tasters were three times more likely to snack frequently and had lower brushing frequency. Tasters reported fewer snacking occurrences.

Non-tasters, identified by the PROP sensitivity test, had higher caries experience, more frequent snacking and soft drink consumption and less frequent brushing.