The Effects of Gingivoperiosteoplasty following Alveolar Molding with a Pin-Retained Latham Appliance versus Secondary Bone Grafting on Midfacial Growth in Patients with Unilateral Clefts
Bibliographic record
Abstract
BACKGROUND: Gingivoperiosteoplasty is used for early closure of the alveolar cleft in patients with complete clefts of the primary palate. However, its impact on long-term facial development remains unclear. The purpose of this study was to evaluate the effects of gingivoperiosteoplasty following alveolar molding with a pin-retained Latham appliance on long-term midfacial growth and compare it with secondary bone grafting. METHODS: A retrospective review identified patients born with unilateral complete clefts of the primary and secondary palate. All patients were past the age of permanent canine tooth eruption. Standard cephalometric landmarks were plotted and analyzed by a blinded rater. Patients were divided into two groups based on type of alveolar closure: secondary bone grafting-only or gingivoperiosteoplasty-total. The gingivoperiosteoplasty-total group was further subdivided based on gingivoperiosteoplasty clinical outcomes. Statistical analyses first controlled for age and then for age and palate repair. RESULTS: The average age of the patients was 14.7 years. Radiographs were obtained for 54 patients (gingivoperiosteoplasty-total, n = 38; secondary bone grafting-only, n = 16). The gingivoperiosteoplasty-total group demonstrated decreased maxillary height (p = 0.005) and protrusion (p = 0.001) versus secondary bone grafting only. Dentoalveolar occlusion was not statistically different between groups. CONCLUSIONS: Gingivoperiosteoplasty following alveolar molding with a pin-retained Latham appliance resulted in decreased maxillary protrusion and height compared with secondary bone grafting only. These differences were found irrespective of the technique of palatoplasty. This technique resulted in similar growth patterns as documented following primary bone grafting. Secondary bone grafting therefore remains the authors' surgical approach to the cleft alveolus.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".