Restoring the edentulous maxilla using an implant-supported, matrix-assisted secondary casting

Area of Science:

• Dentistry
• Prosthodontics
• Biomaterials

Background:

• Selecting implant treatments for edentulous maxillas involves balancing bone/soft tissue availability and cost.
• Implant-supported removable prostheses are common but can be expensive and complex to maintain.

Purpose of the Study:

• To describe a novel, cost-effective technique for fabricating implant-supported removable prostheses for the edentulous maxillary arch.
• To present a method that simplifies prosthesis maintenance and improves patient experience.

Main Methods:

• A technique utilizing a cast milled primary bar and a secondary casting made with a vacuum-formed plastic matrix.
• The secondary casting integrates retentive elements and is precisely adapted to the primary bar.
• The method is adaptable to various implant systems.

Main Results:

• The described technique results in a less expensive prosthesis compared to similar designs.
• Retentive elements are designed for easy replacement, simplifying maintenance.
• The final prosthesis is esthetic, hygienic, and potentially easier for patients to handle.

Conclusions:

• The matrix-assisted secondary casting technique offers a viable, economical alternative for implant restorations in the edentulous maxilla.
• This method addresses key patient and clinician concerns regarding cost, maintenance, and usability of implant prostheses.