Abstract
Purpose: The purpose of this research is to determine whether pontic metal substructures, which are currently used in clinical surgeries, are designed appropriately and identify the problems that can occur due to their shape, size, and position. Then it aimed to emphasize the importance of making and designing pontic metal substructures based on basic principles. Materials and Methods: This research measured pontic basal surface (P1) used sample metal substructures in this study, gingiva margin (P2), and the porcelain thickness of maximum infrabulge of labial surface around 1/3 of cervix dentis (P3). One-way ANOVA analysis was carried out to test the differences among groups, Tukey Honestly Significant Difference Test was conducted for statistical analysis among groups. Results: For porcelain thickness and SD value, the P1 part was $1.2-1.8({\pm}0.17)mm$ for experimental group 1, $1.2-1.7({\pm}0.17)mm$ for experimental group 2, and $0.4-2.8({\pm}0.92)mm$ for experimental group 3. Next, the P2 part was $1.4-1.6({\pm}0.07)mm$ for experimental group 1, $1.3-1.8({\pm}0.07)mm$ for experimental group 2, and $0.5-2.7({\pm}0.67)mm$ for experimental group 3. The P3 part was $1.4-1.7({\pm}0.10)mm$ for experimental group 1, $1.5-2({\pm}0.10)mm$ for experimental group 2, and $0.9-3.1mm({\pm}0.90)$ for experimental group 3. There was no significance when One-way ANOVA analysis/Tukey Honestly Significant Difference Test was conducted for statistical analysis among groups (P > 0.05). Conclusion: The suggested metal substructures can be used clinically as they meet the requirements that pontic must have.
목적: 본 연구 목적은 임상에서 사용되고 있는 금속-도재 가공치 하부구조물이 적절하게 설계되었는지 판단하고 모양과 크기 및 위치에 따라 발생할 수 있는 문제점을 파악하여 설계 시 기초 원리에 기반하여 제작하는 것을 강조하였다. 연구 재료 및 방법: 금속-도재 가공치 하부구조 제작에서 이상적인 형태와 임상에서 사용되는 형태의 가공치 기저면(P1), 양 인접면(C), 치경연(P2) 및 순면 최대 풍융부위로 올라가는 치경 1/3부위(P3)의 도재 두께를 측정 하여 일원배치 분산분석 및 사후 검정을 수행하였다. 결과: 측정한 부위의 도재 두께를 비교한 결과 각 그룹 간에는 통계적 유의성이 없었다(P > 0.05). 결론: 본 연구에서 제시하는 금속하부 구조물은 가공치가 갖추어야 할 요구요건을 충족하고 있어 임상적으로 사용이 가능하다.