# Evaluation of microleakage in composite restorations with various adhesive systems: An in vitro comparison

## TL;DR

This study compares how well different dental adhesives prevent microleakage in composite fillings using human teeth in a lab setting.

## Contribution

The study provides new empirical evidence on the sealing performance of universal adhesives compared to other systems.

## Key findings

- Universal adhesives showed significantly less microleakage than self-etch and etch-and-rinse systems.
- Microleakage differences were statistically significant across adhesive groups.
- Proper adhesive selection may improve the success of dental restorations.

## Abstract

Microleakage is a persistent challenge in adhesive dentistry and has a direct effect on the longevity of composite restorations. This
in vitro study performed in accordance with the criteria of the preferred guidelines, investigated and compared,
microleakage status of restorative bonded with etch-and-rinse, self-etch and universal adhesive systems. Twelve extracted human premolars
were restored using standardized class V cavities and then utilized for dye penetration farming after thermocycling. Data analysis
demonstrated statistically significant differences in sealing ability with respect to each adhesive group. Universal adhesives
demonstrated a lower amount of microleakage than self-etch and etch-and-rinse systems. Microleakage is an important factor in adhesive
bonding ultimately dictates failure or success the selection of an appropriate adhesive may relate to the reduction of adhesion and
therefore increases the chance of restorative success.