Earticle

초록

영어

Purpose: The purpose of this study was to evaluate flexural strength, composite surface and fractured surface of three different indirect composite resins. Methods: Fifteen bar-shaped specimens (25mm x 2mm x 2mm) were fabricated for each FL group (Flow type and Light curing) and PLP group (Putty type and Light, Pressure curing) and PL group (Putty type and Light curing) according to manufacturer’s instructions and ISO 10477. Fabricated specimens were stored in the distilled water for 24 hours at the temperature of 37℃. Three-point bending strength test was performed to measure flexural strength using universal testing machine at a crosshead speed of 1mm/min (ISO 10477). Surface and fractured surface of specimens were observed by digital microscope. Results were analyzed with Kruskal-wallis tests (α = 0.05). Results: Mean (SD) of three different indirect composite resins were 83.38 (6.67) MPa for FL group, 139.90(16.53) MPa for PLP group and 171.72(16.74) MPa for PL group. Flexural strength were statistically significant (p<0.05). Differences were not observed at fractured surface among three groups. However, many pores over 100㎛ were observed at PL group in observing surface of specimen. Conclusion: Flexural strength of composite resins was affected by second polymerization method and content of inorganic filler.

목차

[Abstract]
 Ⅰ. 서론
 Ⅱ. 연구 방법
  1. 연구재료
  2. 시편제작
  3. 굴곡강도의 측정
  4. 파절면 및 표면 관찰
  5. 통계분석
 Ⅲ. 결과
  1. 굴곡강도
  2. 표면관찰
 Ⅳ. 고찰
 Ⅴ. 결론
 REFERENCES

키워드

저자

• 김준태 [ Jun-Tae Kim | 고려대학교 대학원 보건과학과 치의기공전공 ]
• 박진영 [ Jin-Young Park | 고려대학교 보건과학연구소 ]
• 김웅철 [ Woong-Chul Kim | 고려대학교 대학원 보건과학과 치의기공전공 ]
• 김지환 [ Ji-Hwan Kim | 고려대학교 대학원 보건과학과 치의기공전공 ] 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