# Innovative Impression Technique for Microstomia Induced by Epidermolysis Bullosa

## TL;DR

This paper presents a modified dental impression technique for patients with microstomia caused by epidermolysis bullosa.

## Contribution

A new technique using a flexible tray and customized resin-silicone tray for RPD fabrication in microstomia patients.

## Key findings

- A flexible tray reinforced with composite fibers was effective for preliminary impressions.
- A customized two-part resin-silicone tray successfully obtained definitive impressions.
- The technique enabled proper RPD fabrication despite restricted mouth opening.

## Abstract

A removable partial denture (RPD) is a prosthesis that requires a high degree of precision during impression making. Adequate mouth opening is essential during impression procedures to ensure proper placement and orientation of the impression tray.

However, this requirement poses a challenge in patients with microstomia, necessitating modification of conventional impression techniques to complete this crucial step in prosthesis fabrication.

This report describes a modified impression technique for fabricating a conventional RPD in a patient with epidermolysis bullosa and restricted mouth opening. A flexible tray reinforced with composite fibers was used to obtain the preliminary maxillary impression, followed by a definitive impression made using a customized two-part resin-silicone tray.