Trial reportBMC oral health2022
Do magnification loupes affect the precision of cavity preparations made by undergraduates? A randomized crossover study.
Trial report in BMC oral health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
11 citing papers in PubMed, 14 citations in OpenAlex.
- Impact of dental loupes and operating microscopes on restorative performance of preclinical and clinical dental students: a pilot study.BMC medical education · 2026Trial
- Effect of massed versus distributed preclinical training on subgingival instrumentation skill across the preclinical-to-clinical transition.Scientific reports · 2026Article
- Evaluation of magnification- and fluorescence-guided techniques for composite restoration removal during endodontic retreatment among undergraduate and postgraduate dental students.BMC medical education · 2026Article
- Initial effect of dental loupe use on laminate veneer preparation accuracy: an in vitro 3D digital assessment.Odontology · 2026Article
- Effects of Galilean Loupes on Dental Students' Posture and Cavity Preparation Quality.European journal of dental education : official journal of the Association for Dental Education in Europe · 2026Article
- A qualitative analysis of Chinese novice general dentists' perspectives on using ergonomic loupes in clinical practice.PloS one · 2026Article
- Undergraduate dental students' knowledge, attitudes, and satisfaction following a step-by-step course in microscopic dentistry.BMC medical education · 2025Article
- Access cavity in endodontics: Balancing precision, preservation, and clinical needs.Journal of conservative dentistry and endodontics · 2025Article
- Effects of magnification on restorative dental preparation performance: a scoping review and level of evidence mapping.Clinical oral investigations · 2024Article
- Impact of using magnifying dental loupes on clinical performance during tooth preparation: A systematic review.Journal of clinical and experimental dentistry · 2024Review
- Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundEvidence on the effect of magnification devices on procedure quality in restorative dentistry is scant. This study therefore aimed to assess, under simulated clinical conditions, if magnification loupes affect the quality of preparations carried out by undergraduate dental students.
methods59 undergraduate dental students underwent two visual acuity tests, based on which they were divided into a "low visual acuity group" (visus < 1) and a "good visual acuity group" (visus ≥ 1). In a randomized crossover experiment, participants performed a two-dimensional S and a three-dimensional O figure preparation with a dental handpiece on standardized acrylic blocs designed for preclinical restorative training. Each participant carried out the preparation tasks twice, once with magnification loupes (2.5×) and once without. Two blinded investigators independently evaluated parameters of preparation precision. Data were analyzed using Spearman rank correlation coefficients, intra-class correlation coefficients, and Wilcoxon rank-sum tests (α = 0.05).
resultsParticipants from the "low visual acuity group" did not show a statistically significant improvement in accuracy when they used magnification loupes for the S figure preparation (p ≥ 0.0625). Participants from the "high visual acuity group" obtained a higher level of accuracy (p ≤ 0.0012) when they used magnification loupes for the S figure preparation. The use of magnification loupes had no statistically significant effect on the accuracy parameters of the O figure cavity preparations (p ≥ 0.1865). Participants with high visual acuity achieved only a marginally better accuracy than participants with a visus < 1.
conclusionsThis study suggests that loupes with 2.5× magnification increase the accuracy of two-dimensional preparations while they have no significant effect, favorable or otherwise, on the accuracy of complex, three-dimensional cavity preparations of untrained dental students.
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