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.
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초록· 키워드
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One factor for successful prognosis of finished dental prosthesis is good marginal fit. The purpose of this study in vitro investigation was to compare the marginal fit of all-ceramic crown before and after porcelain veneering, to evaluate the influence of high temperature of the porcelain firing on the fit. For this experiment, model of abutment tooth of maxillary right central incisor was prepared. Ten working models were produced. Ten zirconia cores were made by dental computer aided design/computer aided manufacturing system. The marginal fit of specimens were examined using silicone replica technique. Silicone replicas were sectioned four times and were measured through a digital microscope (x160). Marginal fit is a distance connected between edge end part of specimen and abutment margin. Each specimens was measured twice, the first measurement was done prior to veneering porcelain firing, while the second measurement was done after the porcelain firing to evaluate this process. Statistical analyses were performed with paired t-test. Mean±SD marginal fit was 60.8±14.2 mm for zirconia core and 86.1±13.3 mm for all-ceramic crown. They were statistically significant differences (p＜0.001). But all specimens showed a marginal fit where the gap widths ranged within the clinical recommendation (120 mm), all-ceramic crown production using the zirconia core was adequate.
목차
등록된 정보가 없습니다.
참고문헌 (22)
참고문헌 신청
Bridger DV / 1981 / Distortion of ceramometal fixed partial dentures during the firing cycle / J Prosthet Dent 45 : 507 ~ 514
Buchanan WT / 1981 / The effect of repeated firings and strength on marginal distortion in two ceramometal systems / J Prosthet Dent 45 : 502 ~ 506
Conrad HJ / 2007 / Current ceramic materials and systems with clinical recommendations: a systematic review / J Prosthet Dent 98 : 389 ~ 404
Dederich DN / 1984 / The effect of repeated firings on the margins of nonprecious ceramometals / J Prosthet Dent 51 : 628 ~ 630
Denry I / 2008 / State of the art of zirconia for dental applications / Dent Mater 24 : 299 ~ 307
Buchanan WT / 1981 / The effect of repeated firings and strength on marginal distortion in two ceramometal systems / J Prosthet Dent 45 : 502 ~ 506
Conrad HJ / 2007 / Current ceramic materials and systems with clinical recommendations: a systematic review / J Prosthet Dent 98 : 389 ~ 404
Dederich DN / 1984 / The effect of repeated firings on the margins of nonprecious ceramometals / J Prosthet Dent 51 : 628 ~ 630
Denry I / 2008 / State of the art of zirconia for dental applications / Dent Mater 24 : 299 ~ 307
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