지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제6권 제2호
- 발행연도
- 2014.1
- 수록면
- 115 - 120 (6page)
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초록· 키워드
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PURPOSE. The aim of this in vitro study was to evaluate the effect of aging on the tear strength and cytotoxicity of four soft denture lining materials. MATERIALS AND METHODS. Four commonly used soft denture lining materials, (Coe-Comfort™GC America Inc., Alsip, IL, USA; Coe-Soft™GC America Inc., Alsip, IL, USA; Visco-gel Dentsply Caulk Milford, DE, USA; and Sofreliner Tough M Tokuyama Dental Corporation Tokyo, Japan) were selected. Sixty trouser-leg designed specimens per lining material were fabricated using a stainless steel mold for tear strength testing. The specimens were divided into non-thermocycling and 1000-, and 3000- thermocycling groups. For the cytotoxicity test, twenty-four disk shaped specimens per material were fabricated using a stainless steel mold. The specimens were soaked in normal saline solution for 24 h, 48 h and 72 h. Cytotoxicity was measured by XTT assay in L929 mouse fibroblasts. Data were analyzed by two way analysis of variance and Dunnett’ test (P<.05). RESULTS. Before thermocycling, Sofreliner Tough M (10.36 ± 1.00 N) had the highest tear strength value while Coe-Comfort™(0.46 ± 0.10 N) had the lowest. After 3000 cycles, Sofreliner Tough M (9.65 ± 1.66 N) presented the highest value and Coe-Comfort™(0.42 ± 0.08 N) the lowest. Sofreliner Tough M, in all incubation periods was the least toxic with significant differences compared to all other materials (P<.05). Coe-Comfort™ Coe-Soft™ and Sofreliner Tough M did not show any significant differences within their material group for all incubation periods. CONCLUSION. This in vitro study revealed that aging can affect both the tear strength and cytotoxicity of soft denture materials depending on the composition.
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참고문헌 (34)
참고문헌 신청
Stevens MG. / 1993 / Comparative analysis of using MTT and XTT in colorimetric assays for quantitating bovine neutrophil bactericidal activity / J Immunol Methods 157:225~231
Dootz ER. / 1993 / Physical property comparison of 11 soft denture lining materials as a function of accelerated aging / J Prosthet Dent 69:114~119
Hekimoğlu C. / 1999 / The effect of accelerated ageing on the mechanical properties of soft denture lining materials / J Oral Rehabil 26:745~748
León BL. / 2005 / Water sorption, solubility, and tensile bond strength of resilient denture lining materials polymerized by different methods after thermal cycling / J Prosthet Dent 93:282~287
Pinto JR. / 2004 / Evaluation of varying amounts of thermal cycling on bond strength and permanent deformation of two resilient denture liners / J Prosthet Dent 92:288~293
Dootz ER. / 1993 / Physical property comparison of 11 soft denture lining materials as a function of accelerated aging / J Prosthet Dent 69:114~119
Hekimoğlu C. / 1999 / The effect of accelerated ageing on the mechanical properties of soft denture lining materials / J Oral Rehabil 26:745~748
León BL. / 2005 / Water sorption, solubility, and tensile bond strength of resilient denture lining materials polymerized by different methods after thermal cycling / J Prosthet Dent 93:282~287
Pinto JR. / 2004 / Evaluation of varying amounts of thermal cycling on bond strength and permanent deformation of two resilient denture liners / J Prosthet Dent 92:288~293
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