Role of Platelet Gel and Calcium-Coated Lactosorb Membranes in Healing Critical Calvarial Defects
Bibliographic record
Abstract
We evaluated the efficacy of coating Lactosorb (Biomet Inc, Warsaw, IN) membranes with calcium hydroxyapatite in critical-size defects in rabbits. We also evaluated whether platelet gel affects calvarial bone healing.Fifteen adult New Zealand white rabbits were divided into 5 groups. Each animal underwent a surgical procedure in which 2 critical-size (15 mm) calvarial defects were created in the parietal bones. Group A was control. Group B was a control in 1 defect and Lactosorb in the other defect. Group C was treated with Lactosorb in 1 defect and Lactosorb coated with calcium hydroxyapatite in the other defect. Group D was treated with Lactosorb in 1 defect and coated Lactosorb without calcium hydroxyapatite in the other defect. Group E was treated with platelet gel in 1 defect and control in the other. The animals were killed at 1, 3, and 6 months. The bones were excised and evaluated by clinical observation, radiography, and histology.None of the defects were closed at 6 months. Defects treated with platelet gel healed in a similar fashion as control. All defects treated with a barrier (Lactosorb, Lactosorb coated, Lactosorb coated with hydroxyapatite) showed clinical, radiographic, and histologic evidence of increased healing compared with control. The addition of hydroxyapatite did not augment healing.We concluded that the healing of critical-size defects in rabbits can be augmented by the addition of Lactosorb membranes. There is no evidence that platelet gel augments the healing of critical defects in rabbits.
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How this classification was reachedexpand
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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| 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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".