Cases reported "Tooth, Unerupted"

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1/274. Delayed eruption of maxillary primary cuspid associated with compound odontoma.

    Impaction of primary teeth is very rare especially in the maxillary anterior teeth. A four-year-old male child with the complaint of delayed eruption of right maxillary primary cuspid due to the presence of odontoma is presented. ( info)

2/274. Unerupted second primary mandibular molar positioned inferior to the second premolar: case report.

    This report is a clinical case of a 7-year-old child who presented right impacted second primary mandibular molar. This tooth was positioned inferior to the second premolar successor and a supernumerary tooth superior to the second premolar. Clinical examination did not reveal systemic diseases ot trauma in the facial region. Treatment consisted of the extraction of the impacted second primary molar and the supernumerary tooth. Periodic examination was indicated for follow-up. ( info)

3/274. Primary failure of tooth eruption: a unique case.

    Primary failure of tooth eruption rarely occurs. This case represents a rare clinical situation and appears to reflect a generalized disturbance in the eruptive process, inasmuch as (1) deciduous and permanent dentition are affected, (2) incisors, molars, and premolars are involved in all quadrants, (3) skeletal and craniofacial growth are within normal limits, and (4) no systemic/genetic anomalies were detected. This is the first such case reported in the literature; diagnosis and management are discussed. ( info)

4/274. Spontaneous uprighting of permanent tooth germs after elimination of local eruption obstacles.

    Four clinical cases are presented to demonstrate the self-correcting potential of aberrant tooth germs after the elimination of eruption obstacles (in 2 cases cysts, in 2 other cases severely infraoccluded primary teeth). In the case of the submerging deciduous teeth, the tilted adjacent teeth were orthodontically uprighted after the surgical procedure. Possible causative mechanisms are discussed. ( info)

5/274. Apparent hypodontia: a case of misdiagnosis.

    The case of a 12-year-old girl is reported, whose pretreatment radiograph demonstrated agenesis of two premolars and a canine and slow development of the contralateral premolars. A follow-up radiograph taken 1 year later showed initial mineralization of a tooth germ in the site of one of the apparently missing premolars. The cause, diagnosis, and treatment planning implications of delayed mineralization and slow development of second premolars are discussed with reference to the literature. ( info)

6/274. Dilacerated incisors and congenitally displaced incisors: three case reports.

    Three cases of dilacerated incisors and congenitally displaced incisors are reported. Dilaceration of central incisors occurs following trauma to the deciduous dentition. Generally these teeth are so severely malformed that they have to be extracted. Congenital displacement of the central incisors is an idiopathic condition with a generally favourable prognosis for orthodontic alignment. ( info)

7/274. Radiographic localization of unerupted maxillary anterior teeth using the vertical tube shift technique: the history and application of the method with some case reports.

    The preferred means of radiographic localization is the parallax method introduced by Clark in 1910. He used 2 periapical radiographs and shifted the tube in the horizontal plane. In 1952, Richards appreciated that a vertical tube shift could also be carried out. No major changes then occurred in the technique until Keur, in australia, in 1986 replaced the periapical radiographs with occlusal radiographs. This modification enables a greater tube movement and therefore a greater shift of the image of the impacted tooth; it also ensures that the whole of the tooth is captured on the radiograph. For the vertical tube shift, Keur introduced the use of a rotational panoramic radiograph with an occlusal radiograph. In 1987, Southall and Gravely discussed this vertical tube shift combination in the English dental literature, and it is now the preferred combination of radiographs for localizing impacted maxillary anterior teeth. Jacobs introduced this method to the American literature in 1999, but it has yet to gain acceptance in the continental European literature. Jacobs recommended, when using this combination, to routinely increase the vertical angulation for the occlusal radiograph by 10 degrees to achieve a greater image shift. Four case reports are presented in this article. Three have photographs taken at surgical exposure to illustrate how the position of the impacted tooth can be accurately predicted by appropriate interpretation of the radiographs. ( info)

8/274. Piggyback archwires.

    Commonly, clinicians' principal tool in the alignment phase of orthodontic mechanotherapy is the nickel-titanium wire. During the course of orthodontic treatment, however, there are times when some segments of the dental arch require flexible wires, while the rest would benefit from rigid wires. In this report, we describe a technique where both of these needs are satisfied simultaneously. Specifically, a segment of nickel-titanium wire is piggybacked onto a stainless steel wire in regions where flexibility is desired. This method eliminates the problems associated with the activation, de-activation forces created along a continuous archwire and might be more economical. Clinical pictures illustrate the point. ( info)

9/274. Adenomatoid odontogenic tumour: a case study with radiographic differential diagnostic considerations.

    Adenomatoid odontogenic tumours (AOT) are benign, hamartomatous odontogenic lesions that not uncommonly mimic a dentigerous cyst radiographically. Such a case as found involving an unerupted left maxillary canine in a 19-year-old Chinese female is described. The differential diagnosis of some common odontogenic cysts and neoplasms occurring in Malaysians, that may present in a dentigerous relationship to an unerupted tooth is discussed. A brief review of the radiographic literature on AOT is also included. ( info)

10/274. Ectopic movement of an unerupted mandibular canine.

    A case history has been given with the radiographic evidence of the migration, during development of an unerupted mandibular canine from its normal position. In a 30-month period the canine assumed a horizontal position and moved to a site that was apical to the mandibular incisors, still in the confines of the cortical plates. Because erratic movements of unerupted teeth cannot be anticipated, it would seem wise to defer the elective removal of permanent teeth during the mixed dentition stage until the clinician is assured of a normal eruption pattern of the succedaneous teeth. ( info)
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