Do magnification loupes affect the precision of cavity preparations made by undergraduates? A randomized crossover study.

Eggmann, Florin; Irani, Delia Rhoda; Fehlbaum, Patrizia A; Neuhaus, Klaus (2022). Do magnification loupes affect the precision of cavity preparations made by undergraduates? A randomized crossover study. BMC Oral Health, 22(1), p. 189. BioMed Central 10.1186/s12903-022-02232-z

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BACKGROUND

Evidence 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.

METHODS

59 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).

RESULTS

Participants 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.

CONCLUSIONS

This 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry
04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology
04 Faculty of Medicine > School of Dental Medicine

UniBE Contributor:

Irani, Delia Rhoda, Neuhaus, Klaus

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1472-6831

Publisher:

BioMed Central

Language:

English

Submitter:

Pubmed Import

Date Deposited:

23 May 2022 11:54

Last Modified:

05 Dec 2022 16:20

Publisher DOI:

10.1186/s12903-022-02232-z

PubMed ID:

35590298

Uncontrolled Keywords:

Dental education Magnification device Restorative dentistry Undergraduate training Visual acuity

BORIS DOI:

10.48350/170161

URI:

https://boris.unibe.ch/id/eprint/170161

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