Using cavity liners with direct posterior composite restorations.

Area of Science:

• Restorative Dentistry
• Dental Materials Science

Background:

• Cavity liners traditionally aided dentin repair and acid neutralization.
• Their role has evolved with the use of resin composites in posterior restorations.
• Current use focuses on reducing sensitivity and improving cavity adaptation due to flowability and adhesion.

Purpose of the Study:

• To reassess the clinical relevance and function of cavity liners.
• To clarify confusion regarding the use, timing, and material selection of liners.
• To provide an evidence-based rationale and protocol for clinicians.

Main Methods:

• Literature review of existing studies on cavity liners.
• Analysis of the properties and functions of different liner materials (composite, resin-modified glass ionomer).
• Synthesis of findings to establish evidence-based recommendations.

Main Results:

• Liners offer benefits in reducing post-operative sensitivity and enhancing marginal seal.
• Different liner materials possess distinct advantages for specific clinical scenarios.
• There is ongoing debate and lack of consensus on optimal liner usage.

Conclusions:

• Cavity liners remain relevant in modern restorative dentistry, particularly with resin composites.
• Understanding liner properties and indications is crucial for optimal clinical outcomes.
• Evidence-based protocols can guide clinicians in selecting and using liners effectively.