This case report outlines the use of a modified Leighton’s retractor as a method for canine retraction in a patient with severe hypodontia, a history of aggressive periodontitis with tooth loss and idiopathic root resorption affecting multiple teeth. Treatment involved an upper removable appliance in combination with a lower sectional fixed appliance with the aim of improving aesthetics and function for the patient, whilst balancing the need to minimise treatment duration and modify treatment mechanics to reduce the orthodontic risks.
AcarACanyürekUKocaagaMErverdiN (1999) Continuous vs. discontinuous force application and root resorption. The Angle orthodontist69: 159–63.
2.
Al-AniAHAntounJSThomsonWMMerrimanTRFarellaM (2017) Hypodontia: An update on its etiology, classification, and clinical management. BioMed Research International2017: 9378325.
3.
AlfurijiSAlhazmiNAlhamlanNAl-EhaidebAAlruwaithiMAlkatheeriN, et al. (2014) The effect of orthodontic therapy on periodontal health: a review of the literature. International Journal of Dentistry2014: 585048.
4.
AlShahraniITogooRAlQarniM (2013) A review of hypodontia: classification, prevalence, etiology, associated anomalies, clinical implications and treatment options. World Journal of Dentistry4: 117–125.
5.
BallardDJJonesASPetoczPDarendelilerMA (2009) Physical properties of root cementum: part 11. Continuous vs intermittent controlled orthodontic forces on root resorption. A microcomputed-tomography study. American Journal of Orthodontics and Dentofacial Orthopedics136: 1–8.
6.
BansalPNikhilVKapurS (2015) Multiple idiopathic external apical root resorption: A rare case report. Journal of Conservative Dentistry18: 70–72.
7.
BarbagalloLJJonesASPetoczPDarendelilerMA (2008) Physical properties of root cementum: part 10. Comparison of the effects of invisible removable thermoplastic appliances with light and heavy orthodontic forces on premolar cementum. A microcomputed-tomography study. American Journal of Orthodontics and Dentofacial Orthopedics133: 218–227.
8.
BaumrindSKornELBoydRL (1996) Apical root resorption in orthodontically treated adults. American Journal of Orthodontics and Dentofacial Orthopedics110: 311–320.
9.
BrezniakN (1993) Root resorption after orthodontic treatment. Part II. Literature review. American Journal of Orthodontics and Dentofacial Orthopedics103: 138–146.
10.
CarrHG (1958) Multiple idiopathic resorption of teeth. British Dental Journal105: 455–456.
11.
CatonJGArmitageGBerglundhTChappleIJepsenSKornmanK, et al. (2018) A new classification scheme for periodontal and peri-implant diseases and conditions - Introduction and key changes from the 1999 classification. Journal of Clinical Periodontology45: 52–58.
12.
ChanEDarendelilerMA (2004) Exploring the third dimension in root resorption. Orthodontics Craniofacial Research7: 64–70.
13.
ChanEDarendelilerMA (2006) Physical properties of root cementum: part 7. Extent of root resorption under areas of compression and tension. American Journal of Orthodontics and Dentofacial Orthopedics129: 504–510.
14.
CholiaSSWilsonPHMakdissiJ (2005) Multiple idiopathic external apical root resorption: report of four cases. Dentomaxillofacial Radiology34: 240–246.
15.
DewanKFairbrotherK (2014) Multiple idiopathic external apical root resorption: a literature review. Dental Update41: 586–595.
16.
FernandesMde AtaideIWagleR (2013) Tooth resorption part I - pathogenesis and case series of internal resorption. Journal of Conservative Dentistry16: 4–8.
17.
GeorgeDIMillerRL (1986) Idiopathic resorption of teeth: a report of three cases. American Journal of Orthodontics89: 13–20.
18.
HanGHuangSVon den HoffJWZengXKuijpers-JagtmanAM (2005) Root resorption after orthodontic intrusion and extrusion: an intraindividual study. The Angle Orthodontist75: 912–918.
19.
HarrisDAJonesASDarendelilerMA (2006) Physical properties of root cementum: part 8. Volumetric analysis of root resorption craters after application of controlled intrusive light and heavy orthodontic forces: a microcomputed tomography scan study. American Journal of Orthodontics and Dentofacial Orthopedics130: 639–647.
20.
HarrisEFKineretSETolleyEA (1997) A heritable component for external apical root resorption in patients treated orthodontically. American Journal of Orthodontics and Dentofacial Orthopedics111: 301–309.
21.
HopkinsRAdamsD (1979) Multiple idiopathic resorption of the teeth. British Dental Journal146: 309–312.
KeestraJAGrosjeanICouckeWQuirynenMTeughelsW (2015) Non-surgical periodontal therapy with systemic antibiotics in patients with untreated chronic periodontitis: a systematic review and meta-analysis. Journal of Periodontal Research50: 294–314.
26.
KerrDACourtneyRMBurkesEJ (1970) Multiple idiopathic root resorption. Oral Surgery, Oral Medicine and Oral Pathology Journal29: 552–565.
27.
KhalafKMiskellyJVogeEMacfarlaneTV (2014) Prevalence of hypodontia and associated factors: a systematic review and meta-analysis. Journal of Orthodontics4: 299–316.
28.
KjarI (1995) Morphological characteristics of dentitions developing excessive root resorption during orthodontic treatment. European Journal of Orthodontics16: 25–34.
29.
KotechaSTurnerPJDietrichTDhopatkarA (2013) The impact of tooth agenesis on oral health-related quality of life in children. Journal of Orthodontics40: 122–129.
30.
LevanderEMalmgrenO (1988) Evaluation of the risk of root resorption during orthodontic treatment: a study of upper incisors. European Journal of Orthodontics10: 30–38.
31.
LevanderEMalmgrenOStenbackK (1998) Apical root resorption during orthodontic treatment of patients with multiple aplasia: a study of maxillary incisors. European Journal of Orthodontics20: 427–434.
32.
LiangHBurkesEJFrederiksenNL (2003) Multiple idiopathic cervical root resorption: systematic review and report of four cases. Dentomaxillofacial Radiology32: 150–155.
33.
LittlewoodSMillettDTDoubledayB (2016) Retention procedures for stabilising tooth position after treatment with orthodontic braces. Cochrane Database Systematic Review2016; CD002283.
LydiattDDHollinsRRPetersonG (1989) Multiple idiopathic root resorption: diagnostic considerations. Oral Surgery, Oral Medicine and Oral Pathology Journal67: 208–210.
36.
MalmgrenOGoldsonLHillCOrwinAPetriniLLundbergM (1982) Root resorption after orthodontic treatment of traumatized teeth. American Journal of Orthodontics82: 487–491.
37.
MeeranNA (2013) Iatrogenic possibilities of orthodontic treatment and modalities of prevention. Journal of Orthodontic Science2: 73–86.
38.
MirabellaAArtunJ (1995) Risk factors for apical root resorption of maxillary anterior teeth in adult orthodontic patients. American Journal of Orthodontics and Dentofacial Orthopedics108: 48–55.
39.
MiuraFMogiMOhuraYKaribeM (1988) The super-elastic Japanese NiTi alloy wire for use in orthodontics. Part III. Studies on the Japanese NiTi alloy coil springs. American Journal of Orthodontics and Dentofacial Orthopedics94: 89–96.
40.
MoodyABSpeculandBSmithAJBasuMK (1990) Multiple idiopathic external resorption of teeth. International Journal of Oral Maxillofacial Surgery19: 200–202.
41.
MoodyGHMuirKF (1991) Multiple idiopathic root resorption: a case report and discussion of pathogenesis. Journal of Clinical Periodontology18: 577–580.
42.
MotokawaMSasamotoTKakuMKawataTMatsudaYTeraoA, et al. (2012) Association between root resorption incident to orthodontic treatment and treatment factors. European Journal of Orthodontics34: 350–356.
43.
MotokawaMTeraoAKakuMKawataTKaradenizCDarendelilerM, et al. (2013) Open bite as a risk factor for orthodontic root resorption. European Journal of Orthodontics35: 790–795.
44.
NakanoTHotokezakaHHashimotoMSirisoontornIAritaKKurohamaT, et al. (2014) Effects of different types of tooth movement and force magnitudes on the amount of tooth movement and root resorption in rats. The Angle Orthodontist84: 1079–1085.
45.
NewmanWG (1975) Possible etiologic factors in external root resorption. American Journal of Orthodontics67: 552–539.
46.
NunnJHCarterNEGillgrassTJHobsonRSJepsonNJMeechanJG, et al. (2003) The interdisciplinary management of hypodontia: background and role of paediatric dentistry. British Dental Journal194: 245–251.
47.
OdenrickLBrattströmV (1985) Nailbiting: frequency and association with root resorption during orthodontic treatment. British Journal of Orthodontics12: 78–81.
48.
PostlethwaiteKRHamiltonM (1989) Multiple idiopathic external root resorption. Oral Surgery, Oral Medicine and Oral Pathology Journal68: 640–643.
49.
ReitanK (1964) Effects of force magnitude and direction of tooth movement on different alveolar bone types. The Angle orthodontist34: 244–255.
50.
ReyDSmitRMGamboaL (2015) Orthodontic treatment in patient with idiopathic root resorption: a case report. Dental Press Journal of Orthodontics20: 108–117.
51.
RiveraEMWaltonRE (1994) Extensive idiopathic apical root resorption. A case report. Oral Surgery, Oral Medicine and Oral Pathology Journal78: 673–677.
52.
RoscoeMGMeiraJBCattaneoPM (2015) Association of orthodontic force system and root resorption: A systematic review. American Journal of Orthodontics and Dentofacial Orthopedics147: 610–626.
53.
SameshimaGTSinclairPM (2001) Predicting and preventing root resorption: Part I. Diagnostic factors. American Journal of Orthodontics and Dentofacial Orthopedics19: 505–510.
54.
SantoroMBeshersDB (2000) Nickel-titanium alloys: stress-related temperature transitional range. American Journal of Orthodontics and Dentofacial Orthopedics118: 685–692.
55.
SantoroMSNicolayOFCangialosiTJ (2001) Pseudoelasticity and thermoelasticity of nickel-titanium alloys: A clinically oriented review. Part I: Temperature transitional ranges. American Journal of Orthodontics and Dentofacial Orthopedics119: 587–593.
56.
SchätzleMTannerSDBosshardtDD (2005) Progressive, generalized, apical idiopathic root resorption and hypercementosis. Journal of Periodontology76: 2002–2011.
57.
SegalGShiffmanPTuncayO (2004) Meta analysis of the treatment related factors of external apical root resorption. Orthodontic Craniofacial Research7: 71–78.
58.
SharpeWReedBSubtelnyJDPolsonA (1987) Orthodontic relapse, apical root resorption, and crestal alveolar bone levels. American Journal of Orthodontics and Dentofacial Orthopedics91: 252–258.
59.
TravessH (2004) Orthodontics. Part 6: Risks in orthodontic treatment. British Dental Journal196: 71–77.
60.
Von FraunhoferJABondsPWJohnsonBE (1993) Force generation by orthodontic coil springs. The Angle Orthodontist63: 145–148.
61.
WaldonKSpencerJBarkerC (2015) Idiopathic external apical root resorption: a case report and review of the literature. Orthodontic Update8: 132–138.
62.
WeltmanBVigKWLFieldsHWShankerSKaizarEE (2010) Root resorption associated with orthodontic tooth movement: A systematic review. American Journal of Orthodontics and Dentofacial Orthopedics137: 462–476.
63.
WoloshynHArtunJKennedyDBJoondephDR (1994) Pulpal and periodontal reactions to orthodontic alignment of palatally impacted canines. Angle Orthodontist64: 257–264.
