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Updated: Jul 9, 2026
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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
A prospective multicenter study using two different surgical approaches in the mandible with turned Brånemark
Jonas P Becktor1, Sten Isaksson, Camilla Billström
1Division of Oral and Maxillofacial Surgery, Maxillofacial Unit, Specialisttandvården, Länssjukhuset, Halmstad, Sweden. jonas@becktor.dk
Clinical Implant Dentistry and Related Research
|November 23, 2007
Summary
The nonsubmerged surgical technique for dental implants showed a higher failure rate (8.6%) compared to the submerged technique (2.4%), with some patients experiencing pain. However, both methods may be predictable for treating mandibular edentulism.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Implantology
- Biomaterials Engineering
Background:
- Submerged implant systems have shown promise in nonsubmerged surgical procedures.
- Limited prospective, randomized comparative studies existed for submerged vs. nonsubmerged techniques at the study's initiation.
Purpose of the Study:
- To compare submerged and nonsubmerged surgical techniques for mandibular edentulism using a submerged implant system.
- To evaluate implant survival rates and complication incidence between the two techniques.
Main Methods:
- A prospective, randomized study involving 77 patients across nine clinics in Sweden and Norway.
- 404 Brånemark System implants were placed: 198 using the nonsubmerged protocol and 206 using the submerged protocol.
- Follow-up extended up to 36 months post-prosthesis insertion.
Main Results:
- Implant survival rates were 91.4% for the nonsubmerged group (17/198 lost) and 97.6% for the submerged group (5/206 lost).
- All implant failures occurred prior to final prosthesis delivery.
- While no major surgical complications were noted, 6 patients in the nonsubmerged group reported postoperative pain, unlike the submerged group.
Conclusions:
- A turned Brånemark implant, designed for submerged placement, can be effectively utilized in a nonsubmerged procedure.
- The nonsubmerged approach may offer predictable outcomes comparable to the conventional submerged method for mandibular edentulism, despite a higher implant loss rate.
