Effects of light duration on flexural strength of self-manufactured light-cure dental glass-fiber-reinforced-composite post
Bibliographic record
Abstract
Objective To study the effects of light duration on flexural strength of self-manufactured light-cure dental glass-fiber-reinforced-composite(GFRC) post.Methods Twenty specimens for three-point bending test were manufactured by self-manufactured light-cure dental GFRC post.They were divided into four groups with five specimens in every group,were cured by light for 20s、40s、60s、80s respectively.Then,the flexural strengths of specimens were measured by three-point bending test and the data were analyzed by statistical methods,One-way ANOVA and LSD-t.Results The flexural strengths of four groups were 525.76MPa,568.27MPa,602.93MPa and 604.12MPa respectively.There was no significant difference between 60s-group and 80s-group(P0.05),there was significant difference between every two groups of 20s-group,40s-group and 60s-group or 80s-group(P0.05).Conclusion The flexural strength of the self-manufactured light-cure dental GFRC post was enhanced following the extension of light duration,and kept stable after 60s.Considering flexural strength and efficiency,the ideal light duration was 60s.
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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) | 0.001 | 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".