Earticle

초록

영어

Purpose: This study aimed to compare the effect of the fabrication method of cobalt-chromium (Co-Cr) removable denture metal frameworks on the bond strength with denture base resin. Methods: Specimens were divided into two groups based on the fabrication method: the conventional casting method group (CS) and the digital computer-aided design/computeraided manufacturing (CAD/CAM) milling method group (MS). Each metal specimen was treated with a heat-polymerized denture base resin following the standard clinical procedures for removable prosthesis fabrication. To minimize variability, all specimens underwent uniform surface polishing. Shear bond strength was measured using a universal testing machine at a crosshead speed of 1.0 mm/min. Fracture surfaces were subsequently analyzed by scanning electron microscopy (SEM). Data analysis was conducted with IBM SPSS Statistics version 24.0 (IBM), with a statistical significance level set at 0.05, and independent samples t-test was applied. Results: The MS group exhibited significantly higher shear bond strength than the CS group (p<0.05). SEM analysis revealed that both groups predominantly exhibited cohesive and mixed failure modes, with a notable prevalence of cohesive fractures. Conclusion: Both fabrication methods achieved clinically acceptable bond strength between the Co-Cr framework and the denture base resin. The milled Co-Cr specimens exhibited superior bonding strength, indicating that the CAD/CAM milling technique may be a viable alternative to conventional casting for the fabrication of removable prosthesis frameworks. However, further research is needed to confirm the results.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
1. 연구재료
2. 연구방법
RESULTS
1. 전단결합강도
2. 파절양상
DISCUSSION
CONCLUSIONS
FUNDING
ACKNOWLEDGEMENTS
CONFLICT OF INTEREST
ORCID
REFERENCES

키워드

저자

• 전병욱 [ Byung-Wook Jeon | 부산가톨릭대학교 보건과학대학 치기공학과 ] 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