BOPT is a biological and prosthetic concept based on the vertical preparation of the tooth, with no defined finishing line. Unlike traditional approaches that rely on precise chamfer or shoulder margins, BOPT allows for the free adaptation of the prosthetic emergence profile to the natural shape and position of the gingiva.

This technique is grounded in the concept of the biologic width and the “biologic polygon”—the tridimensional space that includes the connective tissue, epithelial attachment, and sulcus. By using provisional restorations to guide soft tissue healing, BOPT encourages the thickening and repositioning of the gingiva in a controlled, minimally invasive way.

The absence of a horizontal finish line allows for progressive tissue modeling over time, guided by the shape and contour of provisional and final restorations. This results in better gingival stability, regenerated interdental papillae, and harmonious emergence profiles, without the need for periodontal surgery.

In implant dentistry, BOPT principles are applied through vertically designed abutments that support the formation of a strong connective tissue collar around the implant, contributing to soft tissue sealing and long-term aesthetic success.

The Biologically Oriented Preparation Technique (BOPT) is a modern approach that integrates soft tissue biology into prosthetic restorations. By eliminating the traditional finishing line and using vertical preparation, BOPT creates a “volumetric freedom space” that simulates the natural emergence profile of the tooth. This approach promotes horizontal and vertical gingival tissue adaptation and thickening, without surgical intervention. The technique is widely applicable in prosthodontics, restorative dentistry, and implantology, offering improved aesthetics and enhanced biocompatibility, especially in critical areas such as interdental papillae and gingival margins.