Cases reported "Tooth, Unerupted"

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1/38. Eruption disturbances of maxillary permanent central incisors associated with anomalous adjacent permanent lateral incisors.

    Several causes of eruption disturbances in upper permanent central incisors have been described. This report describes six cases in which the failure of maxillary permanent central incisors to erupt appears to be associated with developmental anomalies in the adjacent permanent lateral incisors. The root formation of the unerupted central incisors was delayed in comparison to the contralateral incisors as was the development of the adjacent lateral incisors. The shapes of the crowns were abnormal and in five cases out of the six described, the primary predecessors of the unerupted incisors were fused.
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keywords = root
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2/38. Hemifacial atrophy with bilateral short roots.

    We present a case in which the patient had both bilateral shortening of the roots, and hemifacial atrophy. As far as we know, this combination has not been described before.
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ranking = 5
keywords = root
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3/38. Bone-like tissue growth in the root canal of immature permanent teeth after traumatic injuries.

    Following a severe traumatic incident to permanent immature teeth, the growth of calcified tissue in the pulp space may occasionally occur. This calcified tissue may be diffuse or in intimate contact with the dentine. It has been suggested that a wide open apex, severe damage to the root sheath, and the absence of infection are only some of the predisposing factors leading to this metaplasia of pulp tissue into bone-like tissue. Five cases are described.
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keywords = root
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4/38. crown lengthening to facilitate restorative treatment in the presence of incomplete passive eruption.

    Crown-lengthening surgery can be utilized to expose subgingival caries. In this clinical case, a patient presented with incomplete passive eruption in the maxillary anterior sextant. This case illustrates that when incomplete passive eruption is present and restorative treatment is necessary in the maxillary anterior sextant, crown-lengthening surgery not only provides exposure of subgingival caries but can also result in a more esthetic therapeutic outcome.
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ranking = 65.74685881311
keywords = caries
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5/38. An assessment of root cementum in cleidocranial dysplasia.

    The purpose of this prospective study was to determine if there is a difference between the amount of cellular and acellular cementum on the roots of 2 teeth extracted from a subject with cleidocranial dysplasia (CCD) compared to 10 teeth extracted from 10 subjects unaffected by CCD. The cementum of 2 permanent teeth, which had been extracted from the CCD subject, was examined and histomorphometrically analyzed for comparison to the cementum of 10 anterior teeth that had been extracted from individuals who were unaffected by CCD. The percentage of the root covered by cellular or acellular cementum was quantified to determine if patients affected by CCD typically lack cellular cementum. In the roots of the 2 permanent teeth of the subject with CCD, a mean of 18.05 /- 10.67% was covered by cellular cementum and 76.90 /- 3.53% was covered by acellular cementum. In the 10 permanent teeth from subjects without CCD, a mean of 19.12 /- 15.60% of the root was covered by cellular cementum and 80.34 /- 15.71% was covered by acellular cementum. The findings indicate that there is no statistically significant difference between the amount of either cellular or acellular cementum covering the roots of the study subject with CCD and the roots of the 10 control teeth. The presumption that a lack of cellular cementum causes the increased number of unerupted teeth in patients with CCD is not supported by the findings of this study.
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ranking = 10
keywords = root
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6/38. Hypodontia, ankylosis and infraocclusion: report of a case restored with a fibre-reinforced ceromeric bridge.

    Retained primary molars without permanent successors often undergo progressive infra-occlusion, without predictable exfoliation. Early prophylactic removal, after assessment of root resorption and adjacent periodontal support loss as well as age of onset, is often indicated. This article describes the joint orthodontic-restorative care of such a case and describes an alternative method of restoration using a fibre-reinforced ceromeric bridge. As well as a conservative preparation and good aesthetics, an overlay restoration provided a fully functional occlusion.
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keywords = root
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7/38. Lingual forced eruption orthodontic technique: clinical considerations for patient selection and clinical report.

    Lingual forced eruption is a treatment modality that minimizes esthetic impairment during orthodontic treatment. Use of this technique can enhance the acceptance of orthodontic treatment by adult patients and minimize unnecessary compromises in the treatment planning of submerged roots. In this clinical report, a treatment modality for forced eruption therapy is described, clinical considerations for patient selection are identified, and the advantages and limits of the lingual orthodontic technique are discussed.
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ranking = 1
keywords = root
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8/38. Multidisciplinary evaluation and clinical management of mesiodens.

    Supernumerary teeth are a disorder of odontogenesis relatively common in the oral cavity and characterized by an excess number of teeth. The term mesiodens is used to refer to an unerupted supernumerary tooth in the central region of the premaxilla between the two central incisors. The complications associated with mesiodens include: lack of eruption of permanent teeth, the deviation of the eruption path, rotations, retention, root re-absorption and pulp necrosis with loss of vitality, and diastema. Early detection of mesiodens is most important if such complications are to be avoided. This report describes the treatment of a maxillary central incisor impacted by a mesiodens. The case initially required only surgical treatment, to remove the supernumerary tooth. Successively, orthodontic therapy was done to bring into position the left permanent central incisor, which erupted physiologically, but rotated 90 degrees around along its long axis.
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ranking = 1
keywords = root
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9/38. Clinico-pathological aspects of a residual natal tooth: a case report.

    A Japanese girl was referred to Osaka University Dental Hospital for examination of a tooth-like structure that had erupted following spontaneous exfoliation of a natal tooth in the lower left primary central incisor region. The structure had erupted at 6 months of age, and radiographic and clinical examination showed composition of pulp and dentin, but no enamel. On histological examination, the majority of the dentin area had a tubular dentin-like appearance, while the outer area of the root appeared to be composed of an osteodentin-like substance. Most of the dentin was covered by cementum. These findings suggest that the structure had originated from a developing remnant of the extracted natal tooth, which must have remained in the gingival tissues. We termed this calcified structure a residual natal tooth.
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keywords = root
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10/38. The conservative approach to managing unerupted lower premolars -- two case reports.

    General dental practitioners frequently refer patients with unerupted premolars for specialist management. The frequency of unerupted lower second premolars in 15-year-old children has been cited as high as 9.7%. Two cases are discussed involving unilateral unerupted premolars, which initially appear to be in unfavourable positions. The first patient was referred at 16 years of age and presented with an unerupted lower left first premolar positioned along the lower border of the mandible. The second patient presented with an unerupted distally inclined, horizontally positioned second premolar impacting on the roots of the first permanent molar. Both cases were reviewed without any treatment, and both premolars erupted into excellent positions. This raises important questions concerning the possible treatment options for such teeth as well as the timing of any interceptive treatment. In cases where premolars are unerupted or impacted, a multidisciplinary approach is indicated involving orthodontics, paedodontics and oral surgery to establish the optimal treatment plan.
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ranking = 1
keywords = root
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Last update: September 2014