Earticle

초록

영어

Purpose: The purpose of the present study was to compare the internal fit of two different temporary restorations fabricated by dental CAD/CAM system and to evaluate clinical effectiveness. Methods: Composite resin tooth of the maxillary first molar was prepared as occlusal reduction(2.0mm), axial reduction(1mm offset), vertical angle(6 degree) and chamfer margin for a temporary crown and duplicated epoxy die was fabricated. The epoxy dies were used to fabricate provisional restorations by CAD/CAM milling technique or 3D-printing technique. The inner data from all crowns were superimposed on the master die file in the ‘best-fit alignment’ method using 3D analysis software. Statistical analysis was performed using a Wilcoxon's rank sum test for differences between groups. Results: It showed that the internal RMS(Root Mean Square) values of the additive group were significantly larger than those of other group. No significant differences in internal discrepancies were observed in the temporary crowns among the 2 groups with different manufacturing method. Conclusion: All the groups had the internal fit within the clinical acceptable range (<50 μm). The continuous research in the future to be applied clinically for the adaptation of additive manufacturing technique are needed.

목차

[Abstract]
I. 서론
Ⅱ. 연구 방법
1. 실험 재료
2. 실험 방법
Ⅲ. 결과
Ⅳ. 고찰
Ⅴ. 결론
REFERENCES

키워드

저자

• 김재홍 [ Jae-Hong Kim | 부산가톨릭대학교 보건과학대학 치기공학과 ] Corresponding Author
• 김기백 [ Ki-Baek Kim | 대전보건대학교 치기공과 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한치과기공학회지 [THE JOURNAL OF KOREAN ACADEMY OF DENTAL TECHNOLOGY]

• 간기

  계간

• pISSN

  1229-3954

• eISSN

  2288-5218

• 수록기간

  1979~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 515 DDC 617