Objectives: Students experience difficulty working with indirect vision and often adopt inadequate working postures because of it. This study created and then assessed the effects of an indirect vision preclinical training programme on dental students' working posture. Methods: The study enrolled students in the third year of the 5-year undergraduate programme in dentistry in the School of Dentistry of São Paulo State University (UNESP), Araraquara (N = 54). The programme consisted of four training sessions in which students performed different types of activities in which only a mirror was used to see the procedure they were performing. To evaluate posture, students were asked to perform class III cavity preparations (distal-palatal and mesial-palatal preparations) on upper central and lateral incisors in a dental mannequin (tooth numbers 11, 12, 21 and 22) both before and after the indirect vision training programme. Photographs were taken of the students' working postures. The photographs were assessed by a duly trained researcher using the Compliance Assessment of Dental ErgonomicPosture Requirements. A descriptive statistical analysis was performed, and the assumptions of normality were verified. Student's paired t test was also performed. The significance level adopted was 5%.Results: A significant difference was found between the percentages of correct ergonomic postures adopted before and after the training programme (p = 0.039). Conclusions:The preclinical training programme for indirect vision was found to have a positive effect on the working postures of the students evaluated herein.
The objective of this study was to adapt a manual dexterity test to a pre-clinical training setting and to determine its reliability. Ninety-two students in the final year of their undergraduate program in dentistry at the School of Dentistry of São Paulo State University (UNESP), Araraquara, were evaluated. After the development of the Dental Manual Dexterity Assessment (DMDA), its reliability was evaluated in a reproducibility study. Two examiners evaluated twenty subjects’ test cubes in duplicate under the naked eye and using an X-ray view box and determined the subjects’ final scores on the DMDA. The examiners waited a week between their two scoring sessions, which were referred to as the first assessment and the second assessment. The intra- and inter-examiner reproducibility study was performed using an intra class correlation coefficient (ρ). A descriptive statistical analysis was performed, and the prevalence of the level of manual dexterity and the time required to complete the test were estimated using a point estimation and a 95% confidence interval. Both intra-examiner reproducibility (ρ1=0.892; ρ2=0.938) and inter-examiner reproducibility (ρ1st=0.914; ρ2nd=0.813) were classified as “good” or higher. A high prevalence of manual dexterity levels classified as “high” was observed among the subjects evaluated. The adaptation resulted in a valid and reliable instrument for measuring manual dexterity among dental students. The method is simple and may be implemented early on in undergraduate programs in dentistry.
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