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논문 기본 정보

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학술저널
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대한치주과학회 Journal of Periodontal & Implant Science Journal of Periodontal & Implant Science 제43권 제1호
발행연도
2013.1
수록면
41 - 46 (6page)

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Purpose: The objective of this study was to evaluate the effect of microthreads on removal torque and bone-to-implant contact (BIC). Methods: Twelve miniature pigs for each experiment, a total of 24 animals, were used. In the removal torque analysis, each animal received 2 types of implants in each tibia, which were treated with sandblasting and acid etching but with or without microthreads at the marginal portion. The animals were sacrificed after 4, 8, or 12 weeks of healing. Each subgroup consisted of 4 animals, and the tibias were extracted and removal torque was measured. In the BIC analysis, each animal received 3types of implants. Two types of implants were used for the removal torque test and another type of implant served as the control. The BIC experiment was conducted in the mandible of the animals. The P1–M1 teeth were extracted, and after a 4-month healing period, 3 each of the 2 types of implants were placed, with one type on each side of the mandible, for a total of 6 implants per animal. The animals were sacrificed after a 2-, 4-, or 8-week healing period. Each subgroup consisted of 4 animals. The mandibles were extracted, specimens were processed, and BIC was analyzed. Results: No significant difference in removal torque value or BIC was found between implants with and without microthreads. The removal torque value increased between 4 and 8 weeks of healing for both types of implants, but there was no significant difference between 8 and 12 weeks. The percentage of BIC increased between 2 and 4 weeks for all types of implants,but there was no significant difference between 4 and 8 weeks. Conclusions: The existence of microthreads was not a significant factor in mechanical and histological stability.
#Biomechanics #Dental implants #Osseointegration #Torque.

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참고문헌 (13)

참고문헌 신청
Abrahamsson I / 2006 / Tissue characteristics at microthreaded implants : an experimental study in dogs / Clin Implant Dent Relat Res 8 : 107 ~ 113 google schola Carlsson L / 1988 / Removal torques for polished and rough titanium implants / Int J Oral Maxillofac Implants 3 : 21 ~ 24 google schola Chun HJ / 2002 / Evaluation of design parameters of osseointegrated dental implants using finite element analysis / J Oral Rehabil 29 : 565 ~ 574 google schola Chung SH / 2008 / Effects of implant geometry and surface treatment on osseointegration after functional loading : a dog study / J Oral Rehabil 35 : 229 ~ 236 google schola Hudieb MI / 2011 / Magnitude and direction of mechanical stress at the osseointegrated interface of the microthread implant / J Periodontol 82 : 1061 ~ 1070 google schola

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