To compare the caries preventive efficacy of clinical-based, home based or E-based oral health interventions and their cost effectiveness.

Caries risk assessment and preventive measures have been performed over years with different perspectives without attention to budgeting and economic value and the preventive protocols remain uncertain for adults.

caries prevention, for example using fluoride varnish, has been found only limitedly cost-effective in clinic settings, which is why alternative strategies involving home-based interventions are sought .Electronic health (E-health) interventions for patient motivation and enhancing of patient adherence, for example via reminders about the reinforcement of hygiene measures and dietary counseling as well as recall visits were found to be of value This randomized controlled clinical study aims to compare the caries preventive efficacy of clinical-based, home based or E-based oral health interventions and their cost effectiveness

Inclusion Criteria:

• High caries risk patients.
• 18-25years.
• Males or females.
• Participants approving to enrol in this study.
• Participants not enrolled in any other study.

Exclusion Criteria:

low or moderate caries risk

• Participants with systematic conditions.
• Patients younger than 18 years.
• Evidence of parafunctional habits.
• with developmental dental anomalies.
• undergoing or will start orthodontic treatment.
• with removable prosthesis

assessors will unaware of the treatment assigned to the patients therefore the assessors will not be included in the pre clinical assessment.