This study is conducted to evaluate the clinical performance of Zirconomer Improved GI restoration compared to Conventional viscous GI restoration in geriatric patients with Posterior carious lesions in class I or II cavities

This study will be conducted to determine the clinical performance of the Zirconia reinforced glass ionomer restorations ( Zirconomer improved) under stress bearing posterior area (class I or claa II cavities) in geriatric population in comparison to Conventional viscous glass ionomer restorations (Ketac molar quick Aplicap) using the modified United States Public Health Service (USPHS) criteria

P: Geriatric Patients with posterior Caries lesions I: Zirconia reinforced GI (Zirconomer Improved) C: Conventional viscous GI, (Ketac Molar quick Aplicap) O: The Clinical performance of the Glass Ionomer restorations Using USPHS Criteria

Inclusion Criteria:

• Age range 60-80 years
• Geriatric patients with Class I or II Posterior carious lesions.
• Males or Females.
• Pulp asymptomatic vital carious posterior teeth.
• Co-operative patients approving to participate in the trial.

Exclusion Criteria:

• Age range less than 60 years.
• Disabilities.
• Deep extensive carious cavities that may lead to fracture of the tooth or pulpal affection.
• Teeth with signs and symptoms of irreversible pulpitis or pulp necrosis.
• Heavy smoking.
• Lack of compliance.