# Microscopic evaluation of microleakage in retrograde filling materials using conventional and ultrasonic techniques

## TL;DR

This study compares how well different retrograde filling materials and preparation techniques prevent leakage in dental treatments.

## Contribution

The study evaluates microleakage in retrograde filling materials using conventional and ultrasonic cavity preparation techniques.

## Key findings

- MTA showed the least microleakage compared to Biodentine and One-Fil PT.
- Ultrasonic preparation provided better sealing benefits than conventional techniques.
- One-Fil PT exhibited significantly higher leakage than the other materials.

## Abstract

Retrograde filling success largely depends on the sealing ability of the material and the quality of the cavity preparation technique.
Therefore, it is of interest to compare apical microleakage among MTA, Biodentine and One-Fil PT using conventional bur and ultrasonic
retrograde cavity preparation. One hundred prepared teeth were restored, dye-immersed, sectioned and evaluated under a stereomicroscope
for leakage. MTA showed the least microleakage, followed by Biodentine, while One-Fil PT exhibited significantly higher leakage. Within
study limitations, MTA remains the most effective retrograde filling material, with ultrasonic preparation offering additional sealing
benefits.