Tag Archives: Dentistry

Does Gender Influence Color Matching Quality?

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1 / Rade D Paravina2

1Department of Prosthetic Dentistry University of Nis, School of Medicine Nis, Radoja Dakica 39, 18000 Nis, Serbia
2Department of Restorative Dentistry and Prosthodontics Center for Biomaterials & Biomimetics University of Texas School of Dentistry at Houston Houston, TX, USA

Summary

Objectives: To compare shade matching skills of color normal males and females.

Material and Methods: A total of 174 dental students of both genders (117 females and 57 males, 20 to 25 years old), with no experience in color matching in dentistry, participated in the study. All recruited students passed the Ishihara color vision test for color deficiency, and matched the colors of eight shade tabs using VITA Linearguide 3D-Master shade guide. Standardized lighting conditions were provided using Rite-Lite (Addent Danbury, CT, USA) hand-held shade matching unit. Color differences between the task tabs and selected tabs were calculated using two CIE color difference formulae and students results were evaluated from 10 (for the best match score) to 1 for the 10th best match score. Means and standard deviations were determined. Student’s t-test was used for result analysis (p = .05).

Results: The mean shade matching scores and standard deviations for male and female students were 5.86 (SD 1.38) and 6.10 (SD 1.36), respectively (p = .266). No statistically significant differences in overall and individual target tab scores by gender were recorded.

Conclusion: Within the limitation of this study, it was concluded that gender did not influence color matching quality

Keywords: color; dentistry; gender; shade matching; color-corrected light

References

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Citation Information: Balkan Journal of Dental Medicine. Volume 20, Issue 2, Pages 89–93, ISSN (Online) 2335-0245, DOI: https://doi.org/10.1515/bjdm-2016-0014, July 2016

Evaluation of Ergonomic Risks during Dental Work

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V. Petrović1 / 1 / P. Bulat2 / M. Djurić-Jovičić3 / N. Miljković4 / D. Marković1

1University of Belgrade, Clinic for Pediatric and Preventive Dentistry School of Dental Medicine
2University of Belgrade, Serbian Institute of Occupational Health School of Medicine
3University of Belgrade, Innovation Center School of Electrical Engineering
4University of Belgrade, Signals and System Department School of Electrical Engineering Belgrade, Serbia

Summary

Aim: The purpose was to assess ergonomic risk level in dentistry, which may contribute to manifestation of musculoskeletal disorders (MSD).

Methods and Materials: The study included ten dentists, postgraduate students, mean age (33 ± 3.4). Participants were asked to perform typical dental examination in standing and sitting positions. The surface electromyography (EMG) was recorded during dental work from both left and right shoulder muscles: descendent trapezius muscle (T); back muscles: erector spinae muscle (ES); and neck muscles: sternocleidomastoid muscle (SCM) and splenius capitis muscle (SC).

Results: High muscles forces, greater than 21% of the maximal voluntary contraction (MVC), which could be indicative of high risk, particularly occurred in muscles SC on both sides of the body in the sitting position. The medium risk level occurred in the same muscles on both sides in standing position. Left and right T muscles were under medium ergonomic risk level in both, sitting and standing working positions. SCM muscles on the left and right side of the body in both working positions were under low risk level, lower than 10% of the MVC. In sitting position, medium risk level occurred in ES muscles on both body sides, while in standing position the risk was low.

Conclusion: Dentists are exposed to ergonomic risk. By combining both sitting and standing position the risk can be reduced.

Keywords: Musculoskeletal disorders; Dentistry; Electromyography; Ergonomic risk

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Citation Information: Balkan Journal of Dental Medicine. Volume 20, Issue 1, Pages 33–39, ISSN (Online) 2335-0245, DOI: https://doi.org/10.1515/bjdm-2016-0005, April 2016