The aim of this study is to examine the effects of TAS1R1, TAS1R3, TLR2, TLR4, CA6, gene polymorphism on caries risk in adults.

To date, genes can be grouped into categories based on the factor influencing dental caries. The major candidate gene categories to date include enamel formation genes, immune response genes, genes related to saliva, and genes related to taste and dietary habits.

CA6 exists in the human saliva and has a critical role of buffering, immune response and taste.Toll-like receptors are expressed in the tongue gustatory papillae where they may initiate immune responses to pathogens.Genetic variations in the TAS1R1 and TAS1R3 for umami cause perception of these tastes differently.

Inclusion Criteria:

• adult be between 25 and 44 years old
• subject has DMFT (Decayed, Missing, Filled, Permanent Tooth) ≥ 5, or, DMFT ≥14
• same oral health, diet and socioeconomic status

Exclusion Criteria:

• systemic or genetic disorders
• orthodontic appliances
• pregnant women

Power analysis was performed with the G-Power software package. It was determined that a total of 200 patients will be needed: 100 (DMFT ≤ 5) for the low caries risk group and 100 (DMFT ≥ 14) for the high caries risk group

Data will be available within 6 months of study completion