Introduction:

Glass ionomer cements (GICs) are widely used in clinical dentistry due to their advantageous properties. However, they present inferior physical and mechanical properties compared to resin composites.

Aim:

Clinical evaluation of chemically cured conventional glass ionomer after light-emitting diode radiant heat enhancement. .

Methodology:

Eighteen healthy patients with 36-second molar teeth will be selected where each patient should have two oclusso- mesial cavities. Standardized oclusso- mesial cavities will be prepared for all the selected teeth, for each patient the first tooth will be restored with chemically cured conventional GICs without any enhancement (M1 group). Meanwhile, the second tooth will be restored by chemically cured conventional GICs that enhanced with radiant heat (LED) (M2 group). functional and biological criteria of each restoration will be clinically evaluated at 4 time points

Introduction:

Glass ionomer cements (GICs) are widely used in clinical dentistry due to their advantageous properties. However, they present inferior physical and mechanical properties compared to resin composites. Various techniques have been suggested to improve properties of conventional GICs such as radiant heat transfer by Light Emitting Diode (LED) or lasers, ultrasonic energy transfer also using of (CaCl2) solution.

Aim:

Clinical evaluation of chemically cured conventional glass ionomer after light-emitting diode radiant heat enhancement. .

Methodology:

Eighteen healthy patients with 36-second molar teeth will be selected where each patient should have two oclusso- mesial cavities. Standardized oclusso- mesial cavities will be prepared for all the selected teeth, for each patient the first tooth will be restored with chemically cured conventional GICs without any enhancement (M1 group). Meanwhile, the second tooth will be restored by chemically cured conventional GICs that enhanced with radiant heat (LED) (M2 group). functional and biological criteria of each restoration will be clinically evaluated immediately after restoration (T0), six months later (T1), and after 12 months (T2) using Federation Dentaire International (FDI) criteria for assessment of dental restorations.

Inclusion Criteria:

1. Age group 21 - 45 years.
2. Both males and females will be included.
3. Ability to return for periodic follow-up (good general health).
4. Only co-operative patients.
5. Vital upper or lower carious posterior teeth.

Exclusion Criteria:

1. Teeth with any pathologic pulpal disease.
2. Teeth with previous restorations
3. Teeth with surface loss due to attrition, erosion, abrasion, or abfraction.
4. Patients with severe or chronic periodontitis.
5. Patients have allergy to the materials used in this trial. 6- Nonfunctioning teeth with no opposing dentition.