Double crown rescue concept: clinical and dental technical workflow

Area of Science:

• Dental Prosthetics
• Implantology
• Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM)

Background:

• Double crowns are established attachments in removable prosthetics, offering retention, comfort, and esthetics.
• Abutment tooth loss is a common complication, potentially compromising denture stability and function.
• Current management often involves resin filling, which may not fully restore biomechanical balance.

Purpose of the Study:

• To present a concept for preserving double crown dentures after abutment tooth loss.
• To utilize computer-assisted technologies for maintaining original denture design and function.
• To prevent further damage to remaining abutment teeth and the prosthesis.

Main Methods:

• Digital preplanning and guided implant surgery to replace lost teeth with implants.
• Fabrication of a CAD/CAM meso-abutment for precise positioning.
• Reattachment of the original primary crown onto the new meso-abutment.

Main Results:

• Preservation of the number of abutment teeth.
• Maintenance of denture functionality and biomechanical load ratios.
• Prevention of overloading on remaining abutment teeth and further prosthetic damage.

Conclusions:

• Computer-assisted technology offers a viable solution for managing abutment tooth loss in double crown dentures.
• This approach effectively preserves denture design and function with minimal effort.
• It provides a method to prevent secondary complications and enhance long-term prosthetic success.