Abstract
BackgroundLayering techniques for direct composite resin restorations might be complicated for inexperienced learners, as a number of materials and instruments are required at each step. The present study aimed to compare and assess the teaching effect of step-by-step and all-in-one teaching methods in layering techniques for direct composite resin restorations among undergraduate dental students.MethodsA total of 68 junior dental students participated in this study, which was a prospective and single-blind trial. The students were randomly divided into a step-by-step group (experimental group, n = 34) and all-in-one group (control group, n = 34). The same teacher taught the two groups, ensuring a comparable teaching effect. The final score of each student was an average of scores by two experts who were blinded to the grouping. The scoring system was consisted by five parts. Each part was assigned scores of 3.0, 1.5, or 0. The total maximum score was 15 and minimum was 0. The total time taken by each group was also calculated.ResultsThe values of the quality of tooth restorations evaluated by experts for step-by-step and all-in-one groups were 11.29 ± 2.13 from 15 and 9.00 ± 2.71 from 15 (t = 3.88, P < 0.001), respectively. In addition, the time spent by the experimental group was significantly lesser than that spent by the control group, which was 122.47 ± 2.82 and 137.18 ± 6.75 min, respectively (t = 11.72, p < 0.001).ConclusionWith regard to the layering techniques for direct composite resin restorations, the outcomes were better in the step-by-step group than in the all-in-one group.
Highlights
Layering techniques for direct composite resin restorations might be complicated for inexperienced learners, as a number of materials and instruments are required at each step
The aim of the present study was to assess the teaching effectiveness of the step-by-step method in layering techniques for direct composite resin restorations among undergraduate dental students, which could be a dependable alternative for dental manual skill training
As the course of layering techniques for direct composite resin restorations is compulsory for third-year dental students, all 68 students in the third year participated in the present study
Summary
Layering techniques for direct composite resin restorations might be complicated for inexperienced learners, as a number of materials and instruments are required at each step. Dental caries and dental abnormalities are other common causes of defects in young permanent teeth [3]. These defects in young permanent teeth, in the anterior region, might cause significant esthetic, functional, and psychosocial problems in children, and often require attention [4]. When the fracture has not caused excessive tooth loss, or when the defect is caused by dental caries in young permanent teeth, restoration with resin composites is the first choice of both patients and dentists [5, 7, 8]
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