[The optimization of dentin bonding in mixed Class-V cavities]

Area of Science:

• Dental Materials Science
• Restorative Dentistry
• Biomaterials Engineering

Background:

• Class V cavities are common and challenging to restore effectively.
• Direct filling techniques can lead to marginal gaps and secondary caries.
• Adhesive restorative procedures offer potential for improved longevity.

Purpose of the Study:

• To evaluate a new functional bonding agent for Class V restorations.
• To compare the marginal integrity of direct fillings versus adhesive inlays.
• To assess the impact of different composite cements and curing methods on inlay success.

Main Methods:

• In vitro placement of Class V restorations using direct filling and adhesive inlay techniques.
• Evaluation of composite insertion and cementation with various light, chemically, or dual-cured cements.
• Quantitative Scanning Electron Microscopy (SEM) marginal analysis.
• Dye penetration tests to assess microleakage.

Main Results:

• The adhesive inlay technique demonstrated statistically significant superiority (p<0.05) in marginal integrity compared to the direct filling technique.
• Dye penetration results corroborated the SEM findings, indicating less microleakage with inlays.
• For inlay restorations, postcuring and the specific curing method of the composite cement were critical factors influencing success.

Conclusions:

• The adhesive inlay restorative procedure represents a significant advancement over direct filling techniques for Class V restorations.
• Optimizing postcuring and selecting appropriate composite cements are essential for maximizing the clinical success of adhesive inlays.
• Further research into novel bonding agents and cementation protocols is warranted.