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      Correction of Multiple Canine Impactions by Mixed Straightwire and Cantilever Mechanics: A Case Report

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          Abstract

          Background. This case report describes the orthodontic treatment of a woman, aged 17 years, with a permanent dentition, brachyfacial typology, Angle Class I, with full impaction of two canines (13,33), and a severe ectopy of the maxillary left canine. Her main compliant was the position of the ectopic teeth. Methods. Straightwire fixed appliances, together with cantilever mechanics, were used to correct the impaired occlusion and to obtain an ideal torque control. Results and Conclusion. The treatment objectives were achieved in 26 months of treatment. The impactions were fully corrected with an optimal torque. The cantilever mechanics succeeded in obtaining tooth repositioning in a short lapse of time. After treatment, the dental alignment was stable.

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          The palatally displaced canine as a dental anomaly of genetic origin.

          Palatal displacement of the maxillary canine tooth is a positional variation thought generally to develop as a result of local factors, such as retained deciduous canines, anomalous permanent lateral incisors, or dental crowding. This article contributes biologic evidence pointing to genetic factors as the primary origin of most palatal displacements and subsequent impactions of maxillary canine teeth. Data gathered from multiple sources are integrated to support a genetic etiology for the palatally displaced canine (PDC) on the basis of five evidential categories: 1. Occurrence of other dental anomalies concomitant with PDC; 2. Bilateral occurrence of PDC; 3. Sex differences in PDC occurrence; 4. Familial occurrence of PDC; 5. Population differences in PDC occurrence. From analysis of available evidence, the PDC positional anomaly appears to be a product of polygenic, multifactorial inheritance.
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            Root resorption of the maxillary lateral incisor caused by impacted canine: a literature review.

            Root resorption of maxillary lateral incisors caused by erupting canines is well known and a relatively common phenomenon. However, much debate and conflicting evidence exists with regard to the actual resorption trigger and potential etiological factors involved. Consequently, there are no obvious clinical clues concerning prevention and diagnosis as well as subsequent treatment decisions. The introduction of cone beam computer tomography has recently allowed drawing a new and much more documented light on the diagnostic and therapeutic strategies. However, no investigations have determined that this new information may result in another and better diagnostic approach and an improved treatment outcome. Therefore, the present review will attempt to summarize the existing evidence on two- and three-dimensional images and try to link the radiological observations to any further preventive, diagnostic, and/or therapeutic measures. Detection thresholds, accuracy, and reliability of impacted canine localization and neighboring root resorption risks will also be considered. This review demonstrates how adding a third-dimension to the radiographic information may notably alter the prevalence of root resorptions and descriptions of this prevalence. In any case, further investigation is needed to determine resorption detection thresholds in various two-dimensional and three-dimensional imaging techniques, as well as to determine therapeutic thresholds and criteria for strategic tooth extraction based on radiographic manifest and not manageable resorption lesions.
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              A textbook of oral pathology

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                Author and article information

                Journal
                Case Rep Dent
                Case Rep Dent
                CRID
                Case Reports in Dentistry
                Hindawi Publishing Corporation
                2090-6447
                2090-6455
                2014
                22 July 2014
                : 2014
                : 925019
                Affiliations
                1Department of Health, University “Magna Graecia” of Catanzaro, Viale Europa, Loc. Germaneto, 88100 Catanzaro, Italy
                2Department of Neurosciences and Oral Sciences, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
                Author notes
                *Sergio Paduano: paduano@ 123456unicz.it

                Academic Editor: Maria Beatriz Duarte Gaviao

                Author information
                http://orcid.org/0000-0001-9088-2606
                http://orcid.org/0000-0002-9708-6765
                Article
                10.1155/2014/925019
                4129165
                a407fe28-3cce-4144-b3c3-1c74304cc23c
                Copyright © 2014 Sergio Paduano et al.

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 10 March 2014
                : 10 June 2014
                Categories
                Case Report

                Dentistry
                Dentistry

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