The effect of canine disimpaction performed with temporary anchorage devices (TADs) before comprehensive orthodontic treatment to avoid root resorption of adjacent teeth

Heravi, Farzin; Shafaee, Hooman; Forouzanfar, Ali; Zarch, Seyed Hossein Hoseini; Mohammadi, Mohsen

doi:10.1590/2177-6709.21.2.065-072.oar

Cited by 30 publications

(50 citation statements)

References 24 publications

(26 reference statements)

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“…In our case, prior use of high forces to retract the upper canines bilaterally on a 0.016 ″ NiTi wire resulted in such "roller coaster" effects. In the recent decade, many studies have shown a surge in the usage of TADs as direct anchorage for correction of transmigrated lower canines [11], upper [12], and molar uprighting [13] with the aid of sectional mechanics to nullify the unwanted side effects which accompany the use of archwire-guided mechanics or the usage of opposing dental components as anchorage.…”

Section: Discussionmentioning

confidence: 99%

A Novel Temporary Anchorage Device Aided Sectional Mechanics for Simultaneous Orthodontic Retraction and Intrusion

Venugopal

Manzano²,

Rengalakshmi

2020

Case Reports in Dentistry

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Closing spaces on light wires with inadequate knowledge and inappropriate mechanics can cause a “roller coaster” effect leading to an improper occlusion. Current knowledge of biomechanics, along with the incorporation of TADs, has made this process less challenging and more predictable. Resistance to sliding is considered the most prominent inhibitor of space closure in archwire-guided space closure or sliding mechanics, in turn delaying treatment duration considerably. In our case, resistance to sliding, primarily binding of the wire in the bracket slot, was nullified with the use of loop and sectional mechanics. This case report is aimed at showcasing the successful treatment of a young lady with a novel clinical setup to retract the canines into the premolar extraction space and simultaneously retract and intrude the anterior segment using sectional archwires and TADs in just under nine months. The current setup with sectional wires and TADs produced an uprighting, and an intrusive effect on the upper incisors during space closure. Additionally, the anchorage design avoided any significant change in the vertical dimension during sagittal correction of the Class II malocclusion. The occlusal plane remained almost stable with good amount of uprighting of the lower incisors following lower space closure too. The use of good biomechanical principles helped us achieve all the treatment goals and objectives in a very short period of time.

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Section: Discussionmentioning

confidence: 99%

A Novel Temporary Anchorage Device Aided Sectional Mechanics for Simultaneous Orthodontic Retraction and Intrusion

Venugopal

Manzano²,

Rengalakshmi

2020

Case Reports in Dentistry

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“…Therefore, a special traction method was necessary. The orthodontic treatment included three specific characteristics: the use of a heavy orthodontic reinforced anchorage (1.2″ stainless steel wire) [17], the use of continuous tensile forces produced by the NiTi closed coil springs, and the use of wire extensions (hooks) derived from the anchor unit that allowed control of the traction direction and prevented contact of the coil springs with the gingiva. The purpose of this treatment protocol was to avoid any undesirable effect on the maxillary incisors.…”

Section: Discussionmentioning

confidence: 99%

“…Root resorption of the maxillary incisors has been evaluated mainly on radiographs and using scoring systems. Length, area, and volume assessments have been reported by only a few studies using CBCT [17–19]. This method allows the determination of changes to the structures surrounding the impacted canine, including the resorption produced in the incisor root.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional evaluation of the root resorption of maxillary incisors after the orthodontic traction of bicortically impacted canines: case reports

et al. 2019

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Background The root resorption of the maxillary incisors after the orthodontic traction of impacted canines is a concern for clinicians. The aim of this case series report was to evaluate the root resorption of the maxillary incisors after traction until the occlusal plane of the bicortically impacted canines (placed between the two cortical bones in the middle of the alveolar process) located in a complex position using three-dimensional superimposition. This case series report describes the root resorption of the maxillary incisors after orthodontic traction with NiTi closed coil springs and a heavy anchorage appliance in three cases of bilateral impacted canines located in a complex position (bicortically) near to midline. Cone-beam computed tomographies (CBCTs) were obtained before and after traction. Root resorption in all root surfaces of the maxillary incisors was evaluated with color-coded maps using the ITK-SNAP and the 3D Slicer software to indicate loss of the root surface (in red) or gain of the surface (in blue) and was quantified in millimeters by the superimposition method. Results The root changes mainly occurred in the apical third of the maxillary incisor root and did not exceed 2 mm. Conclusions Root resorption of the maxillary incisors after the traction of bicortically impacted canines located in a complex position was observed mainly in the apex region, and the amount of root resorption was smaller than 2 mm in all root surfaces.

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“…The absence of the permanent canine in the arch, after the normal eruption timing, leads clinicians to suspect canine impaction and that has to be con rmed by a clinical evaluation of the patient and a radiographic assessment. The approaches to the management of impacted canines are many, but the preferred approach typically involves surgical exposure and guided orthodontic eruption [2].…”

Section: Introductionmentioning

confidence: 99%

“…Temporary Anchorage Devices (TADs), and cantilevers with a Ttitanium Molybdenum Alloy (TMA) sectional represent alternative methods for anchoring the system: a TAD is a mini screw temporarily xed to the bone for the purpose of enhancing orthodontic movement, either by supporting the reactive unit (indirect anchorage) or by obviating the need for it (direct anchorage), and is subsequently removed after use [2]. A number of clinical studies and reviews have investigated the stability of TADs for acting as stable anchor units [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Three Dimensional Movement Analysis of Maxillary Impacted Canine Using TADs: A Pilot Study

Migliorati

Sinfonico

Drago

et al. 2020

Preprint

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BackgroundThe aim of the present study was to compare two different anchorage systems efficiency to disinclude impacted maxillary canines using as evaluation tool superimposed Cone Beam Computed Tomography (CBCTs).MethodsThe study has been conducted with two parallel groups with an allocation ratio of 1:1. Group test received treatment using as anchorage a miniscrew, control group was treated using an anchorage unit a trans palatal arch (TPA). Both groups received a calibrated traction force of 50 grams. CBCT before treatment and 3 months after traction were superimposed and canine tip and root movement were evaluated in mm/month ratio. ResultsNo differences were observed between groups for apex displacement, tip displacement and observation timespan. 22 patients (12 female, 10 male, mean age:13.4 years) undergoing orthodontic treatment for impacted maxillary canines were recruited for this study. No differences were observed between groups for apex displacement, tip displacement and observation timespanConclusionsThe present pilot study provided no evidence that indirect anchorage on miniscrews could make canine disimpaction faster than anchorage on a TPA. An apex root movement of 0.4-0.8mm per month was found, while average canine tip movement ranged between 1.08mm and 1.96mm per month.No miniscrews failures were observed.Trial RegistrationThe study reports the preliminary results of the randomized clinical trial registered at www. register.clinicaltrials.gov (registration number: NCT01717417)

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The effect of canine disimpaction performed with temporary anchorage devices (TADs) before comprehensive orthodontic treatment to avoid root resorption of adjacent teeth

Cited by 30 publications

References 24 publications

A Novel Temporary Anchorage Device Aided Sectional Mechanics for Simultaneous Orthodontic Retraction and Intrusion

A Novel Temporary Anchorage Device Aided Sectional Mechanics for Simultaneous Orthodontic Retraction and Intrusion

Three-dimensional evaluation of the root resorption of maxillary incisors after the orthodontic traction of bicortically impacted canines: case reports

Three Dimensional Movement Analysis of Maxillary Impacted Canine Using TADs: A Pilot Study

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