Dataset Information

Three dimensional movement analysis of maxillary impacted canine using TADs: a pilot study.

ABSTRACT:

Background

The 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).

Methods

The 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?g. CBCT before treatment and 3?months after traction were superimposed and canine tip and root movement were evaluated in mm/month ratio.

Results

No differences were observed between groups for apex displacement, tip displacement and observation timespan. Twenty-two 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 timespan.

Conclusions

The 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 0.4-0.8?mm per month was found, while average canine tip movement ranged between 1.08?mm and 1.96?mm per month. No miniscrews failures were observed.

Trial registration

The study reports the preliminary results of the randomized clinical trial registered at www.register.clinicaltrials.gov (registration number: NCT01717417 ).

SUBMITTER: Migliorati M

PROVIDER: S-EPMC7809730 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Publications

Three dimensional movement analysis of maxillary impacted canine using TADs: a pilot study.

Migliorati Marco M Cevidanes Lucia L Sinfonico Giordana G Drago Sara S Dalessandri Domenico D Isola Gaetano G Biavati Armando Silvestrini AS

Head & face medicine 20210115 1

<h4>Background</h4>The 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).<h4>Methods</h4>The 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 ...[more]

PMID: 33451343

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Project description:Zygomatic-maxillary (ZMC) complex fractures are a common consequence of facial trauma. In this retrospective study, we present a novel method of ZMC fracture pattern analysis, utilizing three-dimensional visualization of computed tomography (CT) images to record displacement of the malar eminence in a three-dimensional coordinate plane. The pattern of fracture was then correlated with treatment outcome. Facial CT scans were obtained from 29 patients with unilateral ZMC fractures and 30 subjects without fractures and analyzed. Briefly, displacement of the malar eminence (ME) on the fractured side was measured in medial-lateral (x), superior-inferior (y), and anterior-posterior (z) dimensions, as well as Euclidean distance, by comparison to ME location on the unfractured side. Baseline natural variance in asymmetry was accounted for by comparing ME location on the left and right sides in subjects without fractures. Patients who required open reduction and internal fixation (ORIF) to repair the ZMC fracture alone had significantly greater cumulative ME displacements than patients who did not require ORIF (p = 0.02). Additionally, patients with a high fracture score of 3, 4, or 5 (assigned based on severity displacement in each dimension) had significantly higher rates of ORIF than patients with a low fracture score of 0, 1, or 2 (p = 0.05). Severe displacement in one or more dimensions was associated with higher rates of ORIF than seen in patients with only neutral or mild displacements in all dimensions (p = 0.05). Severe x displacement was most strongly correlated with surgical intervention (p = 0.02). Overall, orbital floor repair was less strongly associated with most displacement measures than ZMC repair alone; however, patients requiring orbital floor repair had greater Euclidean ME displacements than patients who did not require orbital floor repair (p = 0.02). Fracture severity, as determined by multiple parameters in this novel evaluation system, is associated with higher rates of ORIF in patients with unilateral ZMC fractures. Determination of ZMC fracture pattern may thus be informative when considering treatment options.

Dataset Information

Three dimensional movement analysis of maxillary impacted canine using TADs: a pilot study.

Background

Methods

Results

Conclusions

Trial registration

Publications

Three dimensional movement analysis of maxillary impacted canine using TADs: a pilot study.

Similar Datasets

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