Earticle

초록

영어

Purpose: This study aimed to investigate whether the accuracy and internal porosity of removable partial denture frameworks differ depending on the build direction in the selective laser melting method. Methods: A partially edentulous maxillary study model was scanned, and the anterior–posterior palatal bar was then digitally designed. The angles formed between the z-axis and the path of the insertion and removal were divided into five groups: –60°, –30°, 0°, 30°, and 60°. For each group, three removable partial denture metal frameworks were fabricated and used as specimens. The inner surface of each sample was scanned and superimposed on the design file to obtain the root mean square (RMS) value, and the average RMS value of each group was measured. One sample was randomly selected from each group, and the equivalent diameter and sphericity of the pores were analyzed using industrial X-ray threedimensional computed tomography. To compare statistical differences between groups, the Kruskal–Wallis test of SPSS Statistics ver. 27.0 (IBM) was used (α=0.05). Results: The average RMS values of the whole inner surface accuracy of the specimens were in the order of –60°<0°<–30°<30°<60° (p<0.05). The equivalent diameter and sphericity of internal pores were significantly different among groups (p<0.001). Conclusion: The build orientation of the selective laser melting method influences the accuracy and internal porosity of removable partial denture frameworks.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
1. 연구 모형 제작
2. 상악 국소의치 금속 구조물의 설계 및 캐드 데이터 생성
3. 상악 국소의치 금속 구조물 제작 및 내면(조직면)의 스캔데이터 생성
4. 3차원(3D) 편차 분석
5. 내부 기공의 측정 및 분석
6. 통계분석
RESULTS
1. 정확도 비교
2. 내부 기공 비교
DISCUSSION
CONCLUSIONS
FUNDING
ACKNOWLEDGEMENTS
CONFLICT OF INTEREST
ORCID
REFERENCES

키워드

저자

• 함건희 [ Geon Hee Ham | 고려대학교 일반대학원 보건과학과 치의기공학전공 ]
• 김지환 [ Ji-Hwan Kim | 고려대학교 일반대학원 보건과학과 치의기공학전공, 고려대학교 L-HOPE 공동체-기반 토탈 러닝헬스시스템 교육연구단 ] Corresponding Author

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