Our study is designed as an interventional prospective longitudinal study which examines the Israeli defense force personnel. The population of our study is composed out of the IDF personnel which will be randomly be subdivided into 2 different groups - one will be noted as the intervention group and the other will function as a control group. Each participant will be monitored for a period of 18 months.

On the intervention group, which includes a couple of hundreds participants, a thorough caries management by risk assessment plan will be conducted. The risk assessment will include the following criteria:

• Saliva check
• Plaque control
• Plaque acidity
• Diet - Frequency of carbohydrate intake
• Previous caries experience and present carious activity
• Others (prosthetic/orthodontic appliances, systemic diseases etc.)

After obtaining the data the patients will be categorized into 1 of 3 distinct risk level - low, medium, high. Each category will be treated according to a tailored treatment protocol:

• Dietary instructions
• Oral hygiene instructions
• Antibacterial therapy
• Fluorides
• Restoration
• Follow ups The control group will be treated according to standard protocol of treatment in the IDF dental clinics, which is based on removal the cavitated lesions, and lacks any reference to caries as a multifactorial infectious disease.

We assume that personalized treatment of the disease, based on identifying risk factors will lower the number of patients with active disease.

Inclusion Criteria:

• Informed consent

Exclusion Criteria:

• Pregnancy
• Available for 18 month follow-up