Earticle

초록

영어

Purpose: This study compared the surface hardness (Vickers) and microstructural characteristics between a type IV stone with and without die hardening treatment, a polyurethane die material. Methods: Materials used were a type stone(MG Crystal Rock), two die hardeners (Hardening bath, Epox-it), and a polyurethane resin material(Polyluck). Six specimens per group were prepared according to manufacturer’s directions. The prepared specimens were tested by means of hardness test, one-way ANOVA analysis, scanning electron microscopic(SEM) observations and energy dispersive spectroscopic(EDS) analysis. Results: In the hardness test and its statistical analysis, there was no significant difference in the surface hardness between a type stone and type stone with die hardener coating, type stone mixed with an epoxy like material instead of water. In contrast, polyurethane resin material exhibited significantly greater surface hardness than other specimen groups (p<0.05). Conclusion: By considering the results of the hardness test, SEM observations and EDS analysis, although the die hardeners on type stone did not show remarkable improvement in surface hardness, the die hardener coating on the surface of type stone material did show decrease of microporous and improvement of surface defects.

목차

Abstract
 Ⅰ. 서론
 Ⅱ. 연구 방법
  1. 시편 제작
  2. 경도 시험
  3. 주사전자현미경 관찰(SEM observations)과 에너지분산형분광 분석(EDS analysis)
 Ⅲ. 결과
  1. 경도 시험
  2. 주사전자현미경 관찰(SEM observation)과 에너지 분산형 분광 분석(EDS Analysis)
 Ⅳ. 고찰
  1. 표면경도 비교
  2. 미세구조 및 조성성분의 비교
 Ⅴ. 결론
 참고문헌

키워드

저자

• 이완선 [ Wan-Sun Lee | 고려대학교 대학원 보건과학과 치의기공전공 ]
• 김지환 [ Ji-Hwan Kim | 고려대학교 대학원 보건과학과 치의기공전공 ]
• 김태석 [ Tae-Suk Kim | 마산대학교 치기공과 ]
• 김남식 [ Nam-Sic Kim | 마산대학교 치기공과 ]
• 유진호 [ Chin-Ho Yu | 마산대학교 치기공과 ] 교신저자

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