Biologic stability of plasma ion-implanted miniscrews
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
Objective: To gain basic information regarding the biologic stability of plasma ion-implanted miniscrews and their potential clinical applications. Methods: Sixteen plasma ion-implanted and 16 sandblasted and acid-etched (SLA) miniscrews were bilaterally inserted in the mandibles of 4 beagles (2 miniscrews of each type per quadrant). Then, 250 - 300 gm of force from Ni-Ti coil springs was applied for 2 different periods: 12 weeks on one side and 3 weeks contralaterally. Thereafter, the animals were sacrificed and mandibular specimens including the miniscrews were collected. The insertion torque and mobility were compared between the groups. The bone–implant contact and bone volume ratio were calculated within 800 mm of the miniscrews and compared between the loading periods. The number of osteoblasts was also quantified. The measurements were expressed as percentages and analyzed by independent t-tests (p < 0.05). Results: No significant differences in any of the analyzed parameters were noted between the groups. Conclusions: The preliminary findings indicate that plasma ion-implanted miniscrews have similar biologic characteristics to SLA miniscrews in terms of insertion torque, mobility, bone–implant contact rate, and bone volume rate.
Abstract
Objective: To gain basic information regarding the biologic stability of plasma ion-implanted miniscrews and their potential clinical applications. Methods: Sixteen plasma ion-implanted and 16 sandblasted and acid-etched (SLA) miniscrews were bilaterally inserted in the mandibles of 4 beagles (2 miniscrews of each type per quadrant). Then, 250 - 300 gm of force from Ni-Ti coil springs was applied for 2 different periods: 12 weeks on one side and 3 weeks contralaterally. Thereafter, the animals were sacrificed and mandibular specimens including the miniscrews were collected. The insertion torque and mobility were compared between the groups. The bone–implant contact and bone volume ratio were calculated within 800 mm of the miniscrews and compared between the loading periods. The number of osteoblasts was also quantified. The measurements were expressed as percentages and analyzed by independent t-tests (p < 0.05). Results: No significant differences in any of the analyzed parameters were noted between the groups. Conclusions: The preliminary findings indicate that plasma ion-implanted miniscrews have similar biologic characteristics to SLA miniscrews in terms of insertion torque, mobility, bone–implant contact rate, and bone volume rate.
참고문헌 (17)
- Wehrbein H, "The use of palatal implants for orthodontic anchorage. Design and clinical application of the orthosystem", Clin Oral Implants Res, 7, pp.410~416 (1996)
- Park YC, "Intrusion of posterior teeth using mini-screw implants", Am J Orthod Dentofacial Orthop, 123, pp.690~694 (2003)
- Miyawaki S, "Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage", Am J Orthod Dentofacial Orthop, 124, pp.373~378 (2003)
- Chen CH, "The use of microimplants in orthodontic anchorage", J Oral Maxillofac Surg, 64, pp.1209~1213 (2006)
- Cheng SJ, "A prospective study of the risk factors associated with failure of mini-implants used for orthodontic anchorage", Int J Oral Maxillofac Implants, 19, pp.100~106 (2004)
- Büchter A, "Load-related implant reaction of mini-implants used for orthodontic anchorage", Clin Oral Implants Res, 16, pp.473~479 (2005)
- Joos U, "Strain driven fast osseointegration of implants", Head Face Med, 1, pp.6~ (2005)
- Huja SS, "Pull-out strength of monocortical screws placed in the maxillae and mandibles of dogs", Am J Orthod Dentofacial Orthop, 127, pp.307~313 (2005)
- Habig KH, "Friction and wear of sliding couples coated with TiC, TiN or TiB2", Surf Coat Technol, 42, pp.133~147 (1990)
- 김신영, "ZrN 및 TiN 코팅된 치과교정 용 미니나사의 표면특성과 전기화학적 거동", 한국표면공학회지, 41(5), pp.232~239 (2008), 한국표면공학회
- Albrektsson T, "Osseointegrated titanium implant. Requirements for ensuring a long-lasting, direct boneto- implant anchorage in man", Acta Orthop Scand, 52, pp.155~170 (1981)
- Han CH, "Quantitative and qualitative investigations of surface enlarged titanium and titanium alloy implants", Clin Oral Implants Res, 9, pp.1~10 (1998)
- Buser D, "Influence of surface characteristics on bone integration of titanium implants. A histomorphometric study in miniature pigs", J Biomed Mater Res, 25, pp.889~902 (1991)
- Kim HM, "Preparation of bioactive Ti and its alloys via simple chemical surface treatment", J Biomed Mater Res, 32, pp.409~417 (1996)
- Sul YT, "Resonance frequency and removal torque analysis of implants with turned and anodized surface oxides", Clin Oral Implants Res, 13, pp.252~259 (2002)
- Byon E, "Electrochemical property and apatite formation of metal ion implanted titanium for medical implants", Surf Coat Technol, 200, pp.1018~1021 (2005)
- Wilson AD, "A comparative study of the influence of plasma treatments, PVD coatings and ion implantation on the tribological performance of Ti–6Al–4V", Surf Coat Technol, 114, pp.70~80 (1999)