Why should the anterior borders of the posterior denture base be thinned to 1.5-2mm?

The rationale behind thinning the anterior borders of the posterior denture base to 1.5-2mm primarily revolves around enhancing esthetic outcomes. Reducing the bulk of the denture in this area allows the denture to integrate more naturally with the contours of the oral soft tissues. This is especially important in regions where the denture meets the gums, as a thinner border can create a more seamless transition that mimics the natural appearance of the surrounding tissue. This careful consideration of thickness contributes to better esthetics by reducing the visibility of the denture, improving patient confidence, and ultimately leading to greater satisfaction with the prosthetic.

While there are other functional benefits associated with denture design, such as enhancing retention and reducing bulk, the specific focus on esthetics in this context highlights the importance of a natural appearance in removable partial dentures. This awareness helps dental professionals balance functional and cosmetic considerations throughout the design process.