# Marginal leakage of retrograde filling materials using stereomicroscope: An in vitro study

## TL;DR

This study compared the microleakage of different root-end filling materials in prepared cavities and found bioceramic material to be the most effective.

## Contribution

The study provides new empirical evidence on the performance of bioceramic materials in reducing microleakage in retrograde cavity repairs.

## Key findings

- Bioceramic root repair material showed the least mean microleakage (0.197±0.341).
- Mineral trioxide aggregate and biodentine also showed significantly less microleakage than resin-modified glass ionomer cement.
- Resin-modified glass ionomer cement had the highest microleakage (1.381±0.743).

## Abstract

Root-end filling material apical microleakage in ultrasonic retro tip-prepared retro-cavities is of interest to dentists. Hence, 68
entire maxillary second premolars and mandibular premolars with a single root, removed for orthodontic reasons from individuals were
selected for this study. A 3 mm apical root-end excision was performed utilizing a diamond disc while, root-end cavities were created
utilizing an ultrasonic retro-tip. Four groups of 17 teeth were randomly assigned to receive retrograde cavity repairs with mineral
trioxide aggregate (group 1); Biodentine (group 2), total fill bioceramic root repair material (group 3) and resin-modified glass
ionomer cement (group 4). It was observed that bioceramic root repair material (0.197±0.341), biodentine (0.256±0.547) and
mineral trioxide aggregate (0.814±0.436) exhibited a significantly lesser microleakage than resin-modified glass ionomer cement
(1.381±0.743). Thus, the bioceramic root repair material exhibited the least mean microleakage among all the materials that were
assessed in this study.