Ectopic Eruption of the Permanent Maxillary First Molar: Predictive Factors for Irreversible Outcome.
Bibliographic record
Abstract
PURPOSE: The purpose of this study was to determine the rate of self-correction and predictive factors for irreversible outcome of mesial ectopic eruption of permanent maxillary first molars (EE), in a sample population where no interceptive treatment was initiated. METHODS: Charts of patients diagnosed with EE were reviewed, and radiographs were analyzed for predictive factors reported in the literature. RESULTS: Sixty-five EE were included in the study; 46 (71 percent) self-corrected, of which one-third occurred after age nine years. Space loss, with an average of approximately three mm, occurred in 18 EE (28 percent). Increased magnitude of impaction, degree of resorption of the primary second molar, severe lock, and bilateral occurrence were positively correlated with irreversible EE. Multiple regression analysis was positive for increased magnitude of impaction when adjusted for gender and bilateral occurrence. CONCLUSION: Spontaneous self-correction occurred in 71 percent of permanent maxillary first molars with ectopic eruption; one third of self-corrections occurred after nine years of age. Delaying treatment of ectopic eruption of permanent maxillary first molars may be a viable option when the outcome is uncertain. Increased magnitude of impaction was the most reliable predictor associated with irreversible outcome.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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".