Dr. Glenn Liddelow – Mandibular full-arch restoration
Clinical situation: Failing lower dentition.
Surgical solution: Restorative solution includes a temporary maxillary denture and the Trefoil protocol for the mandible.
View case (PDF, 3 MB)
Trefoil™
The next full-arch revolution
The Trefoil system is a breakthrough in efficiency for treating the edentulous mandible with a fixed and definitive prosthesis on the day of surgery.1 Using a pre-manufactured titanium bar with a unique retention mechanism, it can adjust to compensate for inherent deviations from the ideal implant position and enable the passive fit of the definitive prosthesis.
Main benefits
Definitive teeth in a day
The Trefoil system is an efficient solution that allows Immediate Function and makes fixed and definitive teeth on the day of implant surgery1 an option for more patients.
Straightforward prosthetic workflow
The pre-manufactured titanium bar simplifies the creation of the definitive acrylic prosthesis and saves substantial time for the restorative clinician and the lab.
The first pre-manufactured bar with passive fit
The pre-manufactured framework, anatomically designed for the natural arch of the mandible, contains adaptive joints that adjust to compensate for horizontal, vertical and angular deviations from the ideal implant position and enable the passive fit of the definitive prosthesis.
A breakthrough in workflow efficiency
Image above: estimation of active working time based on median time observed in clinical use.2
An innovation that brings new efficiencies at almost every step – from manufacture of components to definitive restoration. The Trefoil system offers reduced chair time and shorter time-to-teeth compared to conventional treatment by combining:
- A pre-manufactured titanium bar
- A simplified restorative workflow
- A fixed and definitive acrylic prosthesis
- Reduced restorative componentry
Reduced chair time and restorative work
The restorative workflow is simplified thanks to the use of the pre-manufactured titanium bar. An experienced clinician and lab will require approximately six hours of active working time.
Shorter time-to-teeth
Unlike conventional treatments with provisional prosthetics, the Trefoil system enables a fixed and definitive prosthesis to be placed up to six months earlier.
Step-by-step videos
Trefoil prosthetic workflow video
Performing clinician Dr. Glen Liddelow, and dental technician Michael Standish demonstrate the Trefoil prosthetic workflow in 6 short videos.
Prosthetic workflow 1/6
- Verification of implant position
- Fabrication of the verification index
- Implant position and jaw relation records
Prosthetic workflow 2/6
(Laboratory procedure – Option 1)
- Fabrication of the verification index
- Implant position and jaw relation records
- Adjustment of the fixation mechanism with the laser welding technique
Prosthetic workflow 3/6
(Laboratory procedure – Option 2)
- Fabrication of the verification index
- Implant position and jaw relation records
- Adjustment of the fixation mechanism with a light-curing composite
Prosthetic workflow 4/6
- Bite registration for occlusal relationship
- Intraoral wax try-in of the Trefoil bridge
Prosthetic workflow 5/6
- Laboratory procedure: Acrylic processing with the flask injection technique
Prosthetic workflow 6/6
- Delivery of the definitive Trefoil bridge
Clinical case
Testimonals
“The Trefoil system embodies the Nobel Biocare objective – treat more patients better. With this improved efficiency comes the opportunity to bring the benefits of osseointegration to a whole new patient population.” Dr. Kenji Higuchi, US
“The Trefoil system makes it possible for me to deliver a definitive, mandibular fixed prosthesis to the patient on the day of surgery. It reduces treatment time and is more affordable for patients than conventional treatment methods that require a provisional prosthesis.“ Dr. Rubén Davo, Spain
“The Trefoil system provides an outstanding option for the edentulous patient and will provide an affordable, quality solution.” Dr. Glenn Liddelow, Australia
Literature
References
1 Depending on clinician preference and close cooperation with the laboratory.
2 Data on file from use by experienced clinicians and labs.