prothesebasis

Prothesenbasis, often referred to in English as the denture base or prosthesis base, is the foundational part of a removable dental prosthesis that lies on the mucosa of the edentulous arches and supports the artificial teeth. It acts as the interface between the appliance and oral tissues, distributing chewing forces to the soft tissues and underlying bone and contributing to retention, stability, and comfort for the wearer.

In complete dentures, the prothesenbasis typically covers the edentulous ridges and, for maxillary dentures, may extend onto the palate. In partial dentures, the base can be a baseplate or a metal framework overlaid with acrylic resin, providing support for the remaining natural teeth and attached prosthetic teeth.

Materials commonly used for the denture base include polymethyl methacrylate (PMMA) resin, chosen for its aesthetics and tissue compatibility. Some designs employ metal bases or reinforced frameworks, sometimes with an acrylic overlay. The base must be of sufficient bulk to resist fracture, while ensuring good adaptation to the mucosa and comfortable border margins.

Fabrication usually involves taking an impression of the denture-bearing areas, creating a try-in with wax to verify aesthetics and fit, processing the denture with heat-cured resin or other materials, and finishing and polishing to reduce tissue irritation. Care and maintenance focus on tissue health, proper hygiene, periodic professional checks, and avoiding materials or foods that could irritate or damage the base.

Clinical considerations include tissue health, stability of the prosthesis under function, potential allergies to resin components, and ongoing assessment of fit as the surrounding tissues change over time.