A 30‐Year Follow‐Up of Partial Removable Dental Prostheses in a University Dental School Setting
Bibliographic record
Abstract
PURPOSE: To describe the pattern of partial removable dental prosthesis (PRDP) designs over a 30-year period in a cohort of patients from the Université de Montréal, Faculty of Dentistry and to examine the effect of this design in PRDP complaints and the required treatment in a subsample of the patients' cohort. MATERIALS AND METHODS: In this retrospective descriptive study, 1380 PRDP laboratory prescriptions (1980-2009) and 131 PRDP clinical complaint forms (2006-2008) from the archives of the undergraduate prosthodontics clinic of Université de Montréal were selected. Data on type of PRDPs, design, PRDP-related complaints, and the need for treatment were collected. Descriptive statistics and bivariate statistical analyses were conducted. RESULTS: U-shaped (54%) and lingual plate (94%) were the most common major connectors used in the maxillary and mandibular arch, respectively. In 95% of laboratory prescriptions, circumferential clasp was the design for the retainers. Fracture of PRDP components was the most common (41%) complaint. Most of the complaints (68%) were made by PRDP wearers having natural teeth in the opposing arch. There was a significant relationship between fracture of PRDP components and having opposing natural teeth (p = 0.002). Seventy-three percent of PRDP-related complaints were manageable only by minor treatments such as repair, readjustments, and oral hygiene instructions. CONCLUSION: Changes in the design of PRDPs were noticeable at the Université de Montréal since 1980, but there has been little change in the last 20 years. Biomechanical concepts and optimum hygiene were the basic elements in the design of RDPs in this university-based dental school setting. The majority of the complaints were treated by minor treatments.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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".