두 종의 치과용 캐드 소프트웨어에 대한 반복학습의 효과
Effect of repeated learning for two dental CAD software programs
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목적: 치과 임플란트 캐드 소프트웨어를 이용하여 맞춤형 지대주 디자인 시에 소요되는 시간과 반복학습의 관계를 평가하는 것이다. 연구 재료 및 방법: 맞춤형 지대주 디자인은 3DS 캐드 소프트웨어와 EXO 캐드 소프트웨어를 사용하여 지정된 4개의 단계 순으로 시행되었고, 단계별로 3회 반복 측정하였다. 반복학습에 의한 학습효과는 학습곡선으로 나타냈고, 반복 학습에 따른 디자인 시에 소요되는 총 시간과 단계별 소요되는 시간의 감소가 유의한지는 Friedman 검정과 사후검증 (Wilcoxon signed rank test)으로 평가하였다. 디자인 시간과 군간의 차이는 반복 측정 이 요인 분석으로 평가하였다. 통계 분석은 SPSS 통계 소프트웨어를 사용하여 수행하였다(P < 0.05). 결과: 맞춤형 지대주 디자인의 반복학습은 횟수와 단계에 따라 유의한 차이를 나타냈다(P < 0.001). 디자인 시간에 따른 차이는 유의한 것으로 나타났으며(P < 0.001), 캐드 소프트웨어 간의 차이도 유의한 것으로 나타났다(P = 0.006). 결론: 캐드 소프트웨어의 반복학습은 디자인 시간을 단축하였고 디자인 평균시간은 3DS 캐드가 EXO 캐드에 비하여 더 적게 소요되었으나, 학습효과에 따른 학습률은 EXO 캐드가 3DS 캐드보다 좋은 결과를 보였다.
Abstract
Purpose: The purpose of this study is to assess the relationship between the time spent designing custom abutments and repeated learning using dental implant computer aided design (CAD) software. Materials and Methods: The design of customized abutments was performed four stages using the 3DS CAD software and the EXO CAD software, and measured repeatedly three times by each stage. Learning effect by repetition was presented with the learning curve, and the significance of the reduction in the total time and the time at each stage spent on designing was evaluated using the Friedman test and the Wilcoxon signed rank test. The difference in the design time between groups was analyzed using the repeated measure two-way ANOVA. Statistical analysis was performed using the SPSS statistics software (P < 0.05). Results: Repeated learning of the customized abutment design displayed a significant difference according to the number of repetition and the stage (P < 0.001). The difference in the time spent designing was found to be significant (P < 0.001), and that between the CAD software programs was also significant (P = 0.006). Conclusion: Repeated learning of CAD software shortened the time spent designing. While less design time on average was spent with the 3DS CAD than with the EXO CAD, the EXO CAD showed better results in terms of learning rate according to learning effect.
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