The effects of different pilot-drilling methods on the mechanical stability of a mini-implant system at placement and removal: a preliminary study
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Objective: To investigate the effects of different pilot-drilling methods on the biomechanical stability of self-tapping mini-implant systems at the time of placement in and removal from artificial bone blocks. Methods: Two types of artificial bone blocks (2-mm and 4-mm, 102-pounds per cubic foot [102-PCF] polyurethane foam layered over 100-mm, 40-PCF polyurethane foam) were custom-fabricated. Eight mini-implants were placed using the conventional motor-driven pilot-drilling method and another 8 mini-implants were placed using a novel manual pilot-drilling method (using a manual drill) within each of the 2-mm and 4-mm layered blocks. The maximum torque values at insertion and removal of the mini-implants were measured, and the total energy was calculated. The data were statistically analyzed using linear regression analysis. Results: The maximum insertion torque was similar regardless of block thickness or pilot-drilling method. Regardless of the pilot-drilling method, the maximum removal torque for the 4-mm block was statistically higher than that for the 2-mm block. For a given block, the total energy at both insertion and removal of the mini-implant for the manual pilot-drilling method were statistically higher than those for the motor-driven pilot-drilling method. Further, the total energies at removal for the 2-mm block was higher than that for the 4-mm block, but the energies at insertion were not influenced by the type of bone blocks. Conclusions: During the insertion and removal of mini-implants in artificial bone blocks, the effect of the manual pilot-drilling method on energy usage was similar to that of the conventional, motor-driven pilot-drilling method. (Korean J Orthod 2011;41(5):354-360)
Abstract
Objective: To investigate the effects of different pilot-drilling methods on the biomechanical stability of self-tapping mini-implant systems at the time of placement in and removal from artificial bone blocks. Methods: Two types of artificial bone blocks (2-mm and 4-mm, 102-pounds per cubic foot [102-PCF] polyurethane foam layered over 100-mm, 40-PCF polyurethane foam) were custom-fabricated. Eight mini-implants were placed using the conventional motor-driven pilot-drilling method and another 8 mini-implants were placed using a novel manual pilot-drilling method (using a manual drill) within each of the 2-mm and 4-mm layered blocks. The maximum torque values at insertion and removal of the mini-implants were measured, and the total energy was calculated. The data were statistically analyzed using linear regression analysis. Results: The maximum insertion torque was similar regardless of block thickness or pilot-drilling method. Regardless of the pilot-drilling method, the maximum removal torque for the 4-mm block was statistically higher than that for the 2-mm block. For a given block, the total energy at both insertion and removal of the mini-implant for the manual pilot-drilling method were statistically higher than those for the motor-driven pilot-drilling method. Further, the total energies at removal for the 2-mm block was higher than that for the 4-mm block, but the energies at insertion were not influenced by the type of bone blocks. Conclusions: During the insertion and removal of mini-implants in artificial bone blocks, the effect of the manual pilot-drilling method on energy usage was similar to that of the conventional, motor-driven pilot-drilling method. (Korean J Orthod 2011;41(5):354-360)
참고문헌 (20)
- 이승연, "교정력 부하시기에 따른 교정용 미니 임플란트의 안정성", 대한치과교정학회지, 38(3), pp.149~158 (2008), 대한치과교정학회
- 차정열, "교정용 미니스크류의 디자인에 따른 식립 및 제거 토오크", 대한치과교정학회지, 38(1), pp.5~12 (2008), 대한치과교정학회
- 윤순동, "교정용 미니 임플랜트의 cutting flute의 길이 및 형태에 따른 식립 및 제거 토크의 비교", 대한치과교정학회지, 39(2), pp.95~104 (2009), 대한치과교정학회
- Su YY, "Comparison of self-tapping and self-drilling orthodontic mini-implants: an animal study of insertion torque and displacement under lateral loading", Int J Oral Maxillofac Implants, 24, pp.404~411 (2009)
- Baumgaertel S, "Predrilling of the implant site: is it necessary for orthodontic mini-implants", Am J Orthod Dentofacial Orthop, 137, pp.825~829 (2010)
- 전미선, "분사처리 후 산부식 표면처리된 교정용 미니 임플랜트의 골유착능에 관한 연구", 대한치과교정학회지, 38(5), pp.328~336 (2008), 대한치과교정학회
- 이혜련, "Removal torque values of surface-treated mini-implants after loading", AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 134, pp.36~43
- "Survival analysis of orthodontic mini-implants", AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 137, pp.194~199
- 박승현, "성견에서 표면처리된 교정용 마이크로임플랜트의 골 접촉률 및 동요도", 대한치과교정학회지, 38(6), pp.416~426 (2008), 대한치과교정학회
- Mo SS, "Resistance to immediate orthodontic loading of surface- treated mini-implants", Angle Orthod, 80, pp.123~129 (2010)
- "Rotational Resistance of Surface-Treated Mini-implants", ANGLE ORTHODONTIST, 79, pp.899~907
- Cleveland JL, "CDC weighs in on TADs", Am J Orthod Dentofacial Orthop, 136, pp.622~623 (2009)
- Park KJ, "Relationship between implant stability quotient (ISQ values and implant insertion variables: a clinical study" (2007), Seoul: Seoul National University
- Kim SH, "Cone-beam computed tomography evaluation of mini-implants after placement: is root proximity a major risk factor for failure", Am J Orthod Dentofacial Orthop, 138, pp.264~276 (2010)
- Serra G, "Sequential bone healing of immediately loaded mini-implants: histomorphometric and fluorescence analysis", Am J Orthod Dentofacial Orthop, 137, pp.80~90 (2010)
- Cha JY, "The effect of miniscrew taper morphology on insertion and removal torque in dogs", Int J Oral Maxillofac Implants, 25, pp.777~783 (2010)
- Lim SA, "Insertion torque of orthodontic miniscrews according to changes in shape, diameter and length", Angle Orthod, 78, pp.234~240 (2008)
- Brinley CL, "Pitch and longitudinal fluting effects on the primary stability of miniscrew implants", Angle Orthod, 79, pp.1156~1161 (2009)
- Chen Y, "Mechanical properties of self-drilling orthodontic micro-implants with different diameters", Angle Orthod, 80, pp.821~827 (2010)
- Kim JW, "Histomorphometric and mechanical analyses of the drill-free screw as orthodontic anchorage", Am J Orthod Dentofacial Orthop, 128, pp.190~194 (2005)