Journal of Pierre Fauchard Academy (India Section)

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"A" Loop:A New Loop for Management of Impacted or Ectopically Erupted Canines


Affiliations
1 VSPM Dental College and Research Centre, Department of Orthodontic, Nagpur, India
2 Dr. Hazarey’s Dental Clinic and Centre of Excellence for Oral Pre-Cancer, Dental Surgeon, Nagpur, India
3 VSPM Dental College and Research Centre, Department of Orthodontics, Nagpur, India
4 Sharad Pawar Dental College, Department of Orthodontics, India
     

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The ectopic eruption and impaction of permanent canine is a common problem encountered in clinical practice. As maxillary canine is the last permanent tooth to erupt (except third molars), it is most prevalent to be malpositioned or remain impacted due to tooth size arch length discrepancy. The orthodontic treatment of impacted maxillary canine remains a challenge to today's clinicians. The treatment of this clinical entity usually involves surgical exposure of the impacted tooth, followed by orthodontic traction to guide and align it into the dental arch so that it comes into occlusion. Auxiliary springs have been used in orthodontics since long for correction of impacted/unerupted canines or adjacent teeth. Cantilever springs are preferred than the continuous wires as placement of continuous flexible wires for correction of these single tooth malocclusions produces an adverse effect on adjacent teeth. A common disadvantage in all of the loops and techniques mentioned above is that it offers a poor anchorage control in extraction cases. Usually the ischolar_main of impacted canines is near the cortical bone and needs to be brought into cancellous bone, so as to prevent the resorption and also faster movement of the canine. Keeping these points in mind we designed a loop, which fulfills most of the shortcomings, which are discussed above. This loops is called “A loop” as its shape resembles the shape of alphabet “A”. The design, fabrication, biomechanics, advantages and disadvantages of “A loop” are discussed in this article.

Keywords

A loop, Ectopically Erupted Canine, Frictionless Mechanics, Impacted Canine, Individual Canine Retraction, Loop Mechanics, Torque Control on Canine.
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  • Thilander B, Jacobson JO. Local factors in impaction of maxillary canine. Am J Orthod. 1968; 26:145–168.

  • Cramer HC. Dental survey of one thousand adult males: A Study correlated with physical and laboratory findings. J Am Dent Assoc. 1929;16:122.

  • Mead SV. Incidence of impacted teeth. Internat J Orthod. 1930; 16:885–190. https://doi.org/10.1016/S0099-6963(30)90010-5

  • Brin I, Becker A, Shalhav M. Position of maxillary permanent canine in relation to anomalous or missing lateral incisors: A population study. Eur J Orthod. 1986; 8:12–16. https://doi.org/10.1093/ejo/8.1.12. PMid:3456897

  • Takahama Y, Aiyama Y. Maxillary canine impaction as a possible microform of cleft lip and palate. Eur J Orthod. 1982; 4:275–277. https://doi.org/10.1093/ejo/4.4.275. PMid:6959819

  • Roher A. Displaced and impacted canines. Int J Orthod Oral Surg. 1929; 15:1003,1020–1024.

  • Shapira Y, Kuftinec MM. Early diagnosis and interception of potential maxillary canine impaction. J Am Dent Assoc. 1998; 129(10):1450–1454. https://doi.org/10.14219/jada.archive.1998.0080. PMid:9787542

  • McConnell TL, Hoffman DL, Forbes DP, Janzen EK, Weintraub NH. Maxillary canine impaction in patients with transverse maxillary deficiency. ASDC J Dent Child. 1996; 63(3):190–195. PMid:8853823

  • Manne R, Gandikota CS, Juvvadi SR, Rama HRM, Anche S. Impacted canines: Etiology, diagnosis, and orthodontic management. J Pharm Bioallied Sci. 2012 Aug; 4(Suppl 2):S234–S238. PMid:23066259 PMCid:PMC3467862

  • Jacoby H. The “ballista spring” system for impacted teeth. Am J Orthod. 1979; 75:143–151. https://doi.org/10.1016/0002-9416(79)90183-0

  • Crescini A, Giorgetti R, Cortellini P, Pini Prato GP. Tunnel traction of infraosseous impacted maxillary canines. A three-year periodontal follow-up. Am J Orthod Dentofacial Orthop. 1994; 105:61–72. https://doi.org/10.1016/S08895406(94)70100-8

  • Darendeliler AM. Treatment of an impacted canine with magnets. J Clin Orthod. 1994; 28:639–643.

  • Li LCF. Orthodontic traction of impacted canine using magnet: A case report. Cases J. 2008; 1:382. https://doi.org/10.1186/1757-1626-1-382. PMid:19068138. PMCid:PMC2614941

  • Becker A. The orthodontic treatment of impacted teeth. 2nd ed. Abingdon, Oxon, England: Informa Healthcare; 2007. p. 1–228.

  • Kokich VG. Surgical and orthodontic management of impacted maxillary canines. Am J Orthod Dentofacial Orthop. 2004;126:278–283. https://doi.org/10.1016/j.ajodo.2004.06.009. PMid:15356485

  • Jacoby H. The “ballista spring” system for impacted teeth. Am J Orthod. 1979;75:143–151. https://doi.org/10.1016/0002-9416(79)90183-0

  • Kalra V. The k-9 spring for alignment of impacted canines. J Clin Orthod. 2000; 34:606–610. PMid:11314175

  • Hauser C. Eruption of impacted canines with an australian helical archwire. J Clin Orthod. 2000; 34:538–541. PMid:11314366

  • Bowman SJ. The monkey hook: An auxiliary for impacted, rotated, and displaced teeth. J Clin Orthod. 2002; 36:375– 378. PMid:12165978

  • Bowman SJ, Carano A. The Kilroy spring for impacted teeth. JCO. 2003; 37(12):683–688. PMid:14718742

  • Park HS, Kwon OW, Sung JH. Micro-implant anchorage for forced eruption of impacted canines. J Clin Orthod. 2004; 38:297–302. PMid:15178885

  • Vibhute PKJ. Versatile Auxiliary Orthodontic Spring for orthodontic correction of impacted teeth. J of Ind Ortho Soc 2011;45(1): 40–47. https://doi.org/10.5005/jp-journals-10021-1008

  • Proffit WR: The biological basis of orthodontic therapy. Contemporary Orthodontics, 4th edition, Proffit WR, Fields HW, Sarver DM, editor. St. Louis: Elsevier; 2007. p. 331–358.

  • Chay SH, Rabie ABM: Repositioning of the gingival margin by extrusion. Am J Orthod Dentofac Orthop. 2002; 122:95–102. https://doi.org/10.1067/mod.2002.122397. PMid:12142902 25.

  • Nanda. R: Biomechanics and esthetics strategies in clinical orthodontics. Elsevier Saunders, St. Louis; 2005. p. 201–203.

  • Halazonetis DJ. Design and test orthodontic loops using your computer. Am J Orthod Dentofacial Orthop. 1997; 111:346– 348. https://doi.org/10.1016/S0889-5406(97)70194-X

  • Halazonetis DJ. Understanding orthodontic loop preactivation. Am J Orthod Dentofacial Orthop. 1998; 113:237–241. https://doi.org/10.1016/S0889-5406(98)70143-X

  • Warford Jr JH, Gandhi RK, Tira DE. Prediction of maxillary canine impaction using sector and angular measurement. Am J Orthod Dentofacial Orthop. 2003; 124:651–655. https://doi.org/10.1016/S0889-5406(03)00621-8


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  • "A" Loop:A New Loop for Management of Impacted or Ectopically Erupted Canines

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Authors

Ananya Hazare
VSPM Dental College and Research Centre, Department of Orthodontic, Nagpur, India
Deepali Hazare
Dr. Hazarey’s Dental Clinic and Centre of Excellence for Oral Pre-Cancer, Dental Surgeon, Nagpur, India
Usha Shenoy
VSPM Dental College and Research Centre, Department of Orthodontics, Nagpur, India
Ranjit Kamble
Sharad Pawar Dental College, Department of Orthodontics, India

Abstract


The ectopic eruption and impaction of permanent canine is a common problem encountered in clinical practice. As maxillary canine is the last permanent tooth to erupt (except third molars), it is most prevalent to be malpositioned or remain impacted due to tooth size arch length discrepancy. The orthodontic treatment of impacted maxillary canine remains a challenge to today's clinicians. The treatment of this clinical entity usually involves surgical exposure of the impacted tooth, followed by orthodontic traction to guide and align it into the dental arch so that it comes into occlusion. Auxiliary springs have been used in orthodontics since long for correction of impacted/unerupted canines or adjacent teeth. Cantilever springs are preferred than the continuous wires as placement of continuous flexible wires for correction of these single tooth malocclusions produces an adverse effect on adjacent teeth. A common disadvantage in all of the loops and techniques mentioned above is that it offers a poor anchorage control in extraction cases. Usually the ischolar_main of impacted canines is near the cortical bone and needs to be brought into cancellous bone, so as to prevent the resorption and also faster movement of the canine. Keeping these points in mind we designed a loop, which fulfills most of the shortcomings, which are discussed above. This loops is called “A loop” as its shape resembles the shape of alphabet “A”. The design, fabrication, biomechanics, advantages and disadvantages of “A loop” are discussed in this article.

Keywords


A loop, Ectopically Erupted Canine, Frictionless Mechanics, Impacted Canine, Individual Canine Retraction, Loop Mechanics, Torque Control on Canine.

References