Custom Dental Healing Cap for Soft Tissue Emergence Profile
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Solution Overview
Problem
Current dental implant procedures face challenges such as tissue growth into implant threads, aesthetic issues due to standard healing cap gaps, and limitations in immediate loading and soft tissue shaping during osseointegration, particularly for custom abutments which do not allow removable prostheses.
Innovation Solution
A custom healing cap is designed using 3D computer planning based on patient anatomy and prosthetic setup, allowing for pre-implant placement tissue shaping and immediate post-installation support to achieve a desired emergence profile, manufactured via CNC milling or rapid prototyping, enabling optimal soft tissue management and aesthetic outcomes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard healing cap is used, then the internal opening of the implant is covered and soft tissue growth into the implant thread is prevented, but gaps are created around the base of the prosthetic tooth which capture food particles and lead to infection and aesthetic issues
Solution Approach 1:
The healing cap is designed with a customized marginal edge geometry that matches the specific anatomical and prosthetic requirements of each patient. The marginal edge is shaped to provide optimal coverage at the critical gum line area, preventing gaps while maintaining proper sealing against soft tissue ingrowth. This localized customization of the cap's geometry resolves the contradiction between sealing effectiveness and gap prevention.
2Shape
If a custom abutment is designed for optimal prosthetic and aesthetic outcome, then the aesthetic result is improved, but removable prostheses cannot be used during the healing period
Solution Approach 1:
The prosthetic treatment is divided into two separate components: a custom healing cap used during the osseointegration period that allows removable prosthesis use, and a custom abutment installed after healing for final aesthetic restoration. The healing cap is designed with specific marginal edge geometry to shape soft tissue, while the custom abutment provides the final aesthetic outcome. This segmentation resolves the contradiction by allowing each component to fulfill its specific function without compromising the other.
3Reliability
If a cover screw is used during implant osseointegration, then the implant internal thread is protected from soft tissue growth, but the screw cannot be used to shape soft tissue and requires a second incision for access
Solution Approach 1:
The healing cap is designed to perform multiple functions simultaneously: it protects the implant internal thread from soft tissue ingrowth through proper coverage, shapes the soft tissue through its customized marginal edge geometry, and serves as an access point for the implant without requiring additional incisions. This multi-functionality resolves the contradiction by combining the protective function of the cover screw with the soft tissue shaping capability needed for optimal aesthetic outcomes.
4Ease of manufacture
If standard healing caps are used, then manufacturing is simple and cost-effective, but the shape and longitudinal axis differ from the final abutment creating gaps and aesthetic issues
Solution Approach 1:
The custom healing cap is designed in advance, prior to the implant surgery, using digital planning software. The marginal edge geometry is predetermined based on the patient's specific anatomy and the planned final prosthetic outcome. This preliminary design ensures that the healing cap's shape is optimized for both soft tissue management and aesthetic outcomes, while still allowing for efficient manufacturing through modern CAD/CAM techniques.
Data Source
AI summary
A computer based method is used to design a healing cap of an implant. The method is based on a 3D computer plan of the implant that includes digital representations of positions of implants in the mouth of the patient. The method comprises loading 3D implant plan into a computer and combining the 3D implant plan with information about a prosthetic setup. The method determines a marginal edge of a healing cap of an implant based on a 3D representation of the existing patient anatomy, the 3D implant plan and the prosthetic set-up. The healing cap is then manufactured to the custom design.