Microleakage of Class V restorations using two different compomer systems: an in vitro study

Area of Science:

• Restorative Dentistry
• Dental Materials Science
• Biomaterials

Background:

• Microleakage is a significant factor in the failure of dental restorations.
• Class V restorations, particularly those with margins on dentin or cementum, are prone to microleakage.
• Evaluating the marginal integrity of new restorative materials is crucial for clinical success.

Purpose of the Study:

• To compare the marginal microleakage of Dyract-AP and F2000 in Class V cavities.
• To assess the performance of these materials at enamel and dentin/cementum margins.
• To determine if Dyract-AP offers improved marginal seal over F2000.

Main Methods:

• Class V cavities were prepared on extracted human teeth.
• Teeth were restored with Dyract-AP and F2000 following manufacturer instructions.
• Specimens underwent thermocycling and immersion in basic fuchsin dye.
• Dye penetration was evaluated at enamel and dentin/cementum margins under magnification.

Main Results:

• Both Dyract-AP and F2000 exhibited no microleakage at enamel margins.
• Dyract-AP demonstrated no microleakage at either enamel or dentin margins.
• A statistically significant difference (p < 0.05) was found, with Dyract-AP showing less dentin margin leakage than F2000.

Conclusions:

• Dyract-AP and F2000 provide effective marginal seal in enamel for Class V restorations.
• Dyract-AP exhibits superior resistance to marginal microleakage in dentin compared to F2000.
• Dyract-AP may offer enhanced long-term clinical performance due to improved marginal integrity in dentin.