Cases reported "Tooth, Impacted"

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1/3. Can the severity of root resorption be accurately judged by means of radiographs? A case report with histology.

    INTRODUCTION: root resorption of lateral incisors caused by the pressure of erupting canines is a well-known but relatively rare problem in orthodontics and general dentistry. It is usually diagnosed on radiographs. The purpose of this article is to discuss some difficulties associated with evaluating root resorption from radiographs alone. A case report is presented as an example. methods: Radiographs showed that an 11-year-old girl had marked root resorption of the maxillary lateral incisors, caused by the impacted permanent canines. The incisors were to be extracted. Several months before the extractions, a canine had been surgically exposed to remove pressure from the incisor root. The lateral incisors were analyzed histologically, and the histologic findings were compared with those of the patient's mandibular first premolars, which had been extracted. RESULTS: The resorption of the lateral incisors was more severe than expected from the radiographs. The resorption extended far into the pulp. Most, although not all, root resorption areas showed histologic evidence of repair, but the amount of repair was far from functional repair levels. The mandibular first premolars had no signs of resorption, thus excluding systemic causes. CONCLUSIONS: The severity of root resorption of lateral incisors cannot be accurately judged from radiographs alone.
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ranking = 1
keywords = dentistry
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2/3. Two- and three-dimensional orthodontic imaging using limited cone beam-computed tomography.

    Considerable progress has been made in diagnostic, medical imaging devices such as computed tomography (CT). However, these devices are not used routinely in dentistry and orthodontics because of high cost, large space requirements and the high amount of radiation involved. A device using computed tomography technology has been developed for dental use called a limited cone beam dental compact-CT (3DX). The aim of this article is to demonstrate the usefulness of 3DX imaging for orthodontic diagnosis and treatment planning. We present three cases: (1) one case shows delayed eruption of the upper left second premolar, (2) the second case shows severe impaction of a maxillary second bicuspid; and (3) the third case shows temporomandibular joint disorder (TMD). In the tooth impaction cases, the CT images provided more precise information than conventional radiographic images such as improved observation of the long axis of the tooth, root condition, and overlap with bone. In the TMD case, clear and detailed temporomandibular joint images were observed and pre- and posttreatment condylar positions were easily compared. We conclude that 3DX images provide useful information for orthodontic diagnosis and treatment planning.
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ranking = 1
keywords = dentistry
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3/3. Odontomas in pediatric dentistry: report of two cases.

    Odontomas are developmental disturbances which manifest in the form of denticles or amorphous informes masses comprising all dental tissues, especially enamel and dentin, with variable amounts of pulp and cement. We describe here two clinical cases of odontomas in children, focusing on diagnostic means and the importance of early treatment of these lesions. The standard treatment for the two present cases was surgical removal.
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ranking = 4
keywords = dentistry
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