Long‐term results of osseointegrated implant‐based dental rehabilitation in oncology patients reconstructed with a fibula free flap
Why this work is in the frame
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Bibliographic record
Abstract
BACKGROUND: Dental rehabilitation with conventional prostheses after microvascular jaw reconstruction is often unsuccessful because of the altered oral anatomy and the lack of adequate dentition for fixation. PURPOSE: This retrospective study evaluated the long-term outcomes of patients who underwent jaws reconstruction with a fibula free flap and subsequent rehabilitation with implant-supported prostheses. MATERIALS AND METHODS: In total, 21 patients were enrolled; 108 osseointegrated dental implants, positioned on 21 fibular free flaps were assessed. Follow-up examinations were performed according to a standardized protocol, including clinical and radiological evaluations. The mean follow-up after implant insertion was 90.2 (range, 20-204) months. RESULTS: The overall implant survival rate was 97.2% at the 12-month follow-up, 86.5% at 60 months, and 79.3% at 120 months. The rate of overall implant success was 95.4% at the 12-month follow-up, 73.5% at 60 months, and 64.7% at 120 months. Implant failure was more common in patients that had implants placed after they underwent radiation therapy. Peri-implantitis and mucositis were identified in 14.8% and 20.3% of surviving implants, respectively, at the 5- and 10-year follow-up. The risk of developing peri-implantitis was estimated to be higher (odds ratio = 1.5) for patients without connective tissue or skin grafts versus patients with one of them (18.2% vs 9.5%). CONCLUSIONS: Long-term implant-related outcomes show that the survival rate of implants placed into the fibula is acceptable. Radiotherapy negatively impacts survival and success, in particular in the short and medium-term follow-up. Moreover, a relevant peri-implant bone resorption does occur over time and ultimately influences implants success, and it is mainly related to peri-implant gingival mucositis. In this regard skin or connective tissue grafts seem to offer an aid to manage this problem.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.003 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it