지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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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 제5권 제1호
- 발행연도
- 2013.1
- 수록면
- 21 - 28 (8page)
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초록· 키워드
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PURPOSE. This study examined the effects of the abutment types and dynamic loading on the stability of implant prostheses with three types of implant abutments prepared using different fabrication methods by measuring removal torque both before and after dynamic loading. MATERIALS AND METHODS. Three groups of abutments were produced using different types of fabrication methods; stock abutment, gold cast abutment, and CAD/CAM custom abutment. A customized jig was fabricated to apply the load at 30° to the long axis. The implant fixtures were fixed to the jig, and connected to the abutments with a 30 Ncm tightening torque. A sine curved dynamic load was applied for 105 cycles between 25 and 250 N at 14 Hz. Removal torque before loading and after loading were evaluated. The SPSS was used for statistical analysis of the results. A Kruskal-Wallis test was performed to compare screw loosening between the abutment systems. A Wilcoxon signed-rank test was performed to compare screw loosening between before and after loading in each group (α=0.05). RESULTS. Removal torque value before loading and after loading was the highest in stock abutment, which was then followed by gold cast abutment and CAD/CAM custom abutment, but there were no significant differences. CONCLUSION. The abutment types did not have a significant influence on short term screw loosening. On the other hand, after 105 cycles dynamic loading, CAD/CAM custom abutment affected the initial screw loosening, but stock abutment and gold cast abutment did not.
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참고문헌 (38)
참고문헌 신청
Norton MR / 1999 / Assessment of cold welding properties of the internal conical interface of two commercially available implant systems / J Prosthet Dent 81:159~166
Balfour A / 1995 / Comparative study of antirotational single tooth abutments / J Prosthet Dent 73:36~43
Theoharidou A / 2008 / Abutment screw loosening in single-implant restorations: a systematic review / Int J Oral Maxillofac Implants 23:681~690
Jaarda MJ / 1994 / Effect of preload torque on the ultimate tensile strength of implant prosthetic retaining screws / Implant Dent 3:17~21
Siamos G / 2002 / Relationship between implant preload and screw loosening on implant-supported prostheses / J Oral Implantol 28:67~73
Balfour A / 1995 / Comparative study of antirotational single tooth abutments / J Prosthet Dent 73:36~43
Theoharidou A / 2008 / Abutment screw loosening in single-implant restorations: a systematic review / Int J Oral Maxillofac Implants 23:681~690
Jaarda MJ / 1994 / Effect of preload torque on the ultimate tensile strength of implant prosthetic retaining screws / Implant Dent 3:17~21
Siamos G / 2002 / Relationship between implant preload and screw loosening on implant-supported prostheses / J Oral Implantol 28:67~73
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