Blending Material and Realism: Internal Denture Characterization for Melanin Pigmentation- An Innovative Technique

Abstract

In partially edentulous patients, achieving a natural and harmonious appearance between the prosthesis and the existing natural dentition is often challenging. This difficulty is particularly evident when fabricating a single complete denture opposing natural teeth exhibiting melanin pigmentation. While characterization in complete dentures allows for uniform gingival tone and symmetry, matching the internal characterization of a single denture to blend seamlessly with the surrounding natural tissues and pigmentation presents a far greater aesthetic challenge.

The denture’s appearance largely depends on two essential components - the denture teeth and the supporting denture base. Although function and comfort can be predictably restored through conventional techniques, replicating the complex variations in color, translucency, and texture seen in naturally pigmented tissues requires advanced artistic and technical precision. Proper internal characterization enhances the realism of the prosthesis and contributes significantly to patient satisfaction and psychological confidence.

This paper describes a simple and novel laboratory method in which acrylic stains and absorbent tissue paper are embedded into the heat-cured resin during the packing phase to create internal characterization of the denture. This method enables the reproduction of natural melanin pigmentation within the denture base, providing a durable, economical, and aesthetically enhanced outcome that closely mimics the opposing natural dentition.