Earticle

초록

영어

Purpose: The purpose of this study was to investigate the influence of mechanical properties of various ultra-dental stone by setting methods. Methods: 240 cylinder specimens(10 mm × 20 mm) were prepared from three ultra-dental stones(Gemma, Die keen and Fuji rock; n = 80) in accordance with the manufacturers' recommendations. Half of the specimens of each stone(n= 40) were dried in open air within a room temperature; the other half(n = 40) underwent in a silicone rubber mold in open air for 30 minutes and then were dried in a microwave oven for 10 minutes to 600W. Compressive strength(CS), compressive modulus(CM) and diametral tensile strength(DTS) conducted until fracture using Instron 5966 at each of the following periods: 1 and 24 hours from mixing. One-way analysis of variance and Scheffe's post hoc test were performed for statistical comparisons at a significance level of P<.05. Results: The CS and CM values in all dental stone indicated highest after 24h(54.25 MPa < ) than the values for specimens dried in microwave method . The DTS values revealed the highest microwave method. However, in 24h, FJ(Fu-ji rock) and GM(Gemma) had lower mechanical properties than air. Conclusion : Within the limitations of this study, CS did not influence by microwave method but DTS affected according to the setting.

목차

[Abstract]
 I. 서론
 II. 연구 방법
  1. 실험재료
  2. 실험방법 및 측정
  3. 통계 처리
 III. 결과
 IV. 고찰
 V. 결론
 REFERENCES

키워드

저자

• 임용운 [ Yong-Woon Im | 경동대학교 치기공학과 ]
• 황성식 [ Seong-Sig Hwang | 경동대학교 치기공학과 ]
• 김사학 [ Sa-Hak Kim | 경동대학교 치기공학과 ]
• 최재우 [ Je-Woo Choi | 충북보건과학대학교 치기공과 ]
• 정수하 [ Su-ha Jeong | 충북보건과학대학교 치기공과 ]
• 김시철 [ Si-Chul Kim | 충북보건과학대학교 치기공과 ] 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