Browse > Article
http://dx.doi.org/10.4041/kjod.2009.39.2.95

Effect of cutting flute length and shape on insertion and removal torque of orthodontic mini-implants  

Yun, Soon-Dong (Department of Orthodontics, School of Dentistry, Chosun University)
Lim, Sung-Hoon (Department of Orthodontics, School of Dentistry, Chosun University)
Publication Information
The korean journal of orthodontics / v.39, no.2, 2009 , pp. 95-104 More about this Journal
Abstract
Objective: The purpose of this study was to evaluate the effect of length and shape of cutting flute on mechanical properties of orthodontic mini-implants. Methods: Three types of mini-implants with different flute patterns (Type A with 2.6 mm long flute, Type B with 3.9 mm long and straight flute, Type C with 3.9 mm long and helical flute) were inserted into the biomechanical test blocks (Sawbones Inc., USA) with 2 mm and 4 mm cortical bone thicknesses to test insertion and removal torque. Results: In 4 mm cortical bone thickness, Type C mini-implants showed highest maximum insertion torque, then Type A and Type B in order. Type C also showed shortest total insertion time and highest maximum removal torque, but Type A and B didn't showed statistically significant difference in insertion time and removal torque. In 2 mm cortical bone thickness, there were no significant difference in total insertion time and maximum removal torque in three types of mini-implants, but maximum insertion torque of Type A was higher than two other Types of mini-implants. Conclusions: Consideration about length and shape of cutting flute of mini-implant is also required when the placement site has thick cortical bone.
Keywords
Cutting flute; Total insertion time; Maximum insertion torque; Maximum removal torque;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
연도 인용수 순위
1 Costa A, Raffaini M, Melsen B. Miniscrews as orthodontic anchorage a preliminary report. Int J Adult Orthodon Orthognath Surg 1998;13:201-9   PUBMED
2 Park HS. The skeletal cortical anchorage using titanium microscrew implants. Korean J Orthod 1999;29:699-706   과학기술학회마을   ScienceOn
3 Kuroda S, Sugawara Y, Deguchi T, Kyung HM, Takano-Yamamoto T. Clinical use of miniscrew implants as orthodontic anchorage: success rate and postoperative discomfort. Am J Orthod Dentofacial Orthop 2007;131:9-15   DOI   ScienceOn
4 Kim JW, Chang YI. Effect of drilling process in stability of micro-implants used for orthodontic anchorage. Korean J Orthod 2002;32:107-15   과학기술학회마을   ScienceOn
5 Foley WL, Frost DE, Paulin WB Jr, Tucker MR. Uniaxial pullout evaluation of internal screw fixation. J Oral Maxillofac Surg 1989;47:277-80   DOI   ScienceOn
6 Evans M, Spencer M, Wang Q, White SH, Cunningham JL. Design and testing of external fixator bone screws. J Biomed Eng 1990;12:457-62   DOI   ScienceOn
7 Koistinen A, Santavirta SS, Kröger H, Lappalainen R. Effect of bone mineral density and amorphous diamond coatings on insertion torque of bone screws. Biomaterials 2005;26:5687-94   DOI   ScienceOn
8 Liou EJW, Chen PH, Wang YC, Lin JC. A computed tomographic image study on the thickness of the infrazygomatic crest of the maxilla and its clinical implications for miniscrew insertion. Am J Orthod Dentofacial Orthop 2007;131:352-6   DOI   ScienceOn
9 Motoyoshi M, Hirabayashi M, Uemura M, Shimizu N. Recommended placement torque when tightening an orthodontic mini-implant. Clin Oral Implants Res 2006;17:109-14   DOI   ScienceOn
10 Oh MY, Chung KR, Kwon YD, Ryu DM, Lee BS. The clinical use of miniscrew for intraoral anchorage (1). J Korean Dent Assoc 2000;38:18-21
11 Kim JW, Ahn SJ, Chang YI. Histomorphometric and mechanical analysis of the drill-free screw as orthodontic anchorage. Am J Orthod Dentofacial Orthop 2005;128:190-4   DOI   ScienceOn
12 Deguchi T, Nasu M, Murakami K, Yabuuchi T, Kamioka H, Takano-Yamamoto T. Quantitative evaluation of cortical bone thickness with computed tomographic scanning for orthodontic implants. Am J Orthod Dentofacial Orthop 2006;129:721.e7-721.e12   DOI   ScienceOn
13 Heidemann W, Gerlach KL, Grobel KH, Kollner HG. Influence of different pilot hole sizes on torque measurements and pullout analysis of osteosynthesis screws. J Craniomaxillofac Surg 1998;26:50-5   DOI   ScienceOn
14 Kanomi R. Mini-implant for orthodontic anchorage. J Clin Orthod 1997;31:763-7   ScienceOn
15 Kim JW, Cho IS, Lee SJ, Kim TW, Chang YI. Effect of dual pitch mini-implant design and diameter of an orthodontic mini-implant on the insertion and removal torque. Korean J Orthod 2006;36:275-83   과학기술학회마을   ScienceOn
16 Kim JW, Cho IS, Lee SJ, Kim TW, Chang YI. Mechanical analysis of the taper shape and length of orthodontic mini-implant for initial stability. Korean J Orthod 2006;36:55-62   과학기술학회마을   ScienceOn
17 Yano S, Motoyoshi M, Uemura M, Ono A, Shimizu N. Tapered orthodontic miniscrews induce bone-screw cohesion following immediate loading. Euro J Orthod 2006;28:541-6   DOI   ScienceOn
18 Song YY, Cha JY, Hwang CJ. Evaluation of insertion torque and pull-out strength of mini-screws according to different thickness of artificial cortical bone. Korean J Orthod 2007;37:5-15   과학기술학회마을   ScienceOn
19 Lim SA, Cha JY, Hwang CJ. Insertion torque of orthodontic miniscrews according to changes in shape, diameter and length. Angle Orthod 2008;78:234-40   DOI   ScienceOn
20 Moon CH, Lee DG, Lee HS, Im JS, Baek SH. Factors associated with the success rate of orthodontic miniscrews placed in the upper and lower posterior buccal region. Angle Orthod 2008;78:101-6   DOI   ScienceOn
21 Ansell RH, Scales JT. A study of some factors which affect the strength of screws and their insertion and holding power in bone. J Biomech 1968;1:279-302   DOI   ScienceOn
22 Park HS, Jeong SH, Kwon OW. Factors affecting the clinical success of screw implants used as orthodontic anchorage. Am J Orthod Dentofacial Orthop 2006;130:18-25   DOI   ScienceOn
23 You ZH, Bell WH, Schneiderman ED, Ashman RB. Biomechanical properties of small bone screws. J Oral Maxillofac Surg 1994;52:1293-302   DOI   ScienceOn
24 Kim YH, Choi JH. The study about retention of miniscrews used for intraoral anchorage. J Korean Dent Assoc 2001;39:684-7
25 Kuroda S, Yamada K, Deguchi T, Hashimoto T, Kyung HM, Takano-Yamamoto T. Root proximity is a major factor for screw failure in orthodontic anchorage. Am J Orthod Dentofacial Orthop 2007;131(Suppl 4):68S-73S   DOI   ScienceOn
26 Yerby S, Scott CC, Evans NJ, Messing KL, Carter DR. Effect of cutting flute design on cortical bone screw insertion torque and pullout strength. J Orthop Trauma 2001;15:216-21   DOI   ScienceOn
27 Park HS. A new proctocol of the sliding mechanics with micro-implant anchorage (MIA). Korean J Orthod 2000;30:677-85   과학기술학회마을   ScienceOn
28 Cheng SJ, Tseng IY, Lee JJ, Kok SH. A prospective study of the risk factors associated with failure of mini-implants used for orthodontic anchorage. Int J Oral Maxillofac Implants 2004;19:100-6   PUBMED   ScienceOn
29 Seebeck J, Goldhahn J, Städele H, Messer P, Morlock MM, Schneider E. Effect of cortical thickness and cancellous bone density on the holding strength of internal fixator screws. J Orthop Res 2004;22:1237-42   DOI   ScienceOn
30 Heidemann W, Gerlach KL, Gröbel KH, Köllner HG. Drill free screws: a new form of osteosynthesis screw. J Craniomaxillofac Surg 1998;26:163-8   DOI   ScienceOn
31 Wikenheiser MA, Markel MD, Lewallen DG, Chao EYS. Thermal response and torque resistance of five cortical half-pins under simulated insertion technique. J Orthop Res 1665;13:615-9   DOI   ScienceOn