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At least 325 records · Page 18Linked to original sources
PubMed1997

Case report: multi-disciplinary treatment in the management of traumatised anterior teeth.

A case is described in which delayed treatment of traumatised anterior teeth resulted in unwanted tooth movement. Loss of interocclusal space and a reduction in clinical crown height complicated restoration of the teeth. Treatment using fixed-appliances and protraction headgear followed by surgical crown-lengthening facilitated the restorative process.

Adolescent↗
PubMedDate not supplied

The circumferential supracrestal fiberotomy.

This article addresses the advantages and shortcomings of circumferential supracrestal fiberotomy procedures from the pragmatic perspective of practicing clinicians. The first part of this article reviews the anatomy, surgical techniques, and timing of the procedure. The significance of individual techniques and studies are discussed.

Animals↗
PubMed1998

An orthodontic device to capitalize on the rigid fixation of osseointegrated implants.

Extraction of maxillary and mandibular first molars frequently results in tipping of the terminal molars. Ideal treatment involves uprighting the inclined teeth prior to restoration. If a single-tooth implant restoration will be used to replace the missing molar, it can be used as anchorage to upright the tipped or drifted teeth. Careful planning is necessary to make sure the implant is positioned properly for an ideal final result.

Dental Abutments↗
PubMed1998

Transmigration of mandibular canines: report of six cases and review of the literature.

Six young adults were found to have transmigrated mandibular canines. One patient presented with two transmigrated canines. Of the seven impacted teeth, the left mandibular canines was involved in five instances and the right two. In all patients, the primary canine was present in the dental arch. A supernumerary tooth was disclosed on the panoramic radiograph of two patients. Five patients underwent surgical removal of the transmigrated tooth from an intraoral approach. One patient experienced transient postoperative paresthesia in the zone innervated by the mental nerve. When the transmigrated canine is accessible, and especially if it is symptomatic, removal of unerupted tooth is recommended. Otherwise, it should be left alone and kept under observation.

Adolescent↗
PubMed1998

Space changes after premature loss of the mandibular primary first molar: a longitudinal study.

The purpose of this study was to evaluate the space changes after premature loss of the primary mandibular first molar. Twenty-one children (12 boys and 9 girls), with premature loss of the primary mandibular first molar, were selected from the children's dental clinic for this study. The age ranged from 5.1 to 7.2 years with an average of 6 years and 11 months. Mandibular study casts were made from alginate impression for each initial examination and a follow-up examination eight months later. Four measurements including D+E (first and second primary molars) space, arch width, arch length and arch perimeter were tested for comparisons between the initial examination and the follow-up examination eight months later. The D+E space of intact primary molars served as a control. The results showed that the D+E space on the extraction side after the follow-up examination eight months later was significantly shorter than the control side (p = 0.025) and less than the initial D+E space (p < 0.001). However, there were no significant differences on arch width, arch length, and arch perimeter between the initial examination and the follow-up examination eight months later (p > 0.05). It is concluded that the space change after the eruption of the first permanent molar in the mandible is mostly distal movement of the primary cuspid during the early stage of premature loss of the primary first molar.

Child↗
PubMed1991

Transmigration of permanent mandibular canines. Case report.

Transmigration is the migration of a tooth across the midline of the jaw. This phenomenon is found only in relation to the permanent mandibular canines. Two cases are reported. In both, the cause of this deviation was an odontome found in the site normally occupied by the mandibular canine. The literature on transmigration is reviewed.

Adult↗
PubMed1995

A case report. Bilateral transmigration of impacted mandibular canines.

Case reports have described displacement and migration of teeth in the upper and lower dental arches, but migration of a tooth across the mandibular midline is rare. The authors describe an extremely rare case of bilateral transmigration of impacted permanent canines across the midline of the mandible.

Adolescent↗
PubMed2003

Timing of odontogenic neural crest cell migration and tooth-forming capability in mice.

The mammalian tooth develops through sequential and reciprocal interactions between cranial neural crest (CNC)- derived ectomesenchymal cells and the stomadial epithelium. Classic tissue recombination studies demonstrated that premigratory CNC cells and CNC-derived ectomesenchymal cells possess odontogenic capacity and can respond to oral epithelial signals to form a tooth, suggesting that the CNC cells contributing to odontogenic tissue are not prespecified. Here we show that, in mice, CNC cells have populated the forming first branchial arch before the 9-somite stage and continue to migrate into the arch by the 13-somite stage. Grafts of the first arch from the 10-somite embryo or earlier yielded membranous bone and cysts but no teeth after subrenal culture. However, grafts of the first arch with its dorsally adjacent tissue containing migrating neural crest cells from the same age embryos gave rise to teeth. In contrast, teeth formed in first arch grafts that do not contain migrating neural crest cells from embryos with 12 or more somites. Interestingly, the acquisition of tooth forming capability in the first arch coincides with the onset of Fgf8 expression in the oral epithelium. These results suggest that there exists a population of odontogenic neural crest cells that migrates into the first arch between the 10- and 12-somite stages. These cells either possess odontogenic potential and are able to initiate tooth development, or can respond to odontogenic signals derived from the oral epithelium to support tooth formation.

Animals↗
PubMed1986

Repair of an extensive periodontal defect after tetracycline administration. A case report.

A pathologically migrated maxillary central incisor tooth with a poor periodontal prognosis was treated successfully with conventional periodontal therapy. After almost 4 years, an extensive periodontal lesion developed on the same tooth and extraction was recommended. The patient did not comply and the acute symptoms disappeared after the administration of 1 gm of Tetracycline a day for 2 weeks. Although no definitive periodontal therapy was done, complete resolution of the lesion occurred with the healing of the structures of the periodontium and a dramatic reduction in mobility of the tooth. Antibacterial therapy could be an effective means of treating some periodontal lesions once a more exact and direct association is established between the various clinical forms of periodontitis and specific periodontal or groups of pathogens.

Female↗
PubMed2003

Primary molars in severe infraocclusion: a retrospective study.

UNLABELLED: The term severe infraocclusion is used to describe teeth located at the level of or below the alveolar crest and is rare. AIM: The aims of the study were to evaluate the influence of age of diagnosis and treatment on the outcome of the successors of primary molars with severe infraocclusion and to propose a treatment protocol based on the age of diagnosis. METHODS: A retrospective study of patients with primary molars in severe infraocclusion (PMSI) in the period 1987-2001 was carried out. Parameters assessed were age, sex, degree of infraocclusion based on radiographs, altered position of adjacent and successor teeth and treatment outcome. RESULTS: The sample comprised 19 patients with 23 cases of PMSI, all were second primary molars (47.8% maxillary and 52.2% mandibular). Migration of the neighbouring tooth was present in 51.5% of cases. The PMSI treatment was by extraction in all cases, a space maintainer was fitted and remained in place until the eruption of the successor. The outcome was favourable in 82.6% of cases. CONCLUSION: Successful treatment of PMSI depends on prompt diagnosis and appropriate treatment and follow-up of the cases. The earlier the age of detection, the more favourable the outcome.

Adolescent↗
PubMed1977

Occlusal migration of a filled root: report of case.

A mandibular premolar was treated by root canal therapy. The root migrated 11 mm in an occlusal direction beneath the anterior retainer of a fixed partial denture during eight years after treatment. Caries occurred at the junction of the root and the anterior retainer; and, as caries continued, the root apparently migrated to compensate for the lost tooth structure.

Bicuspid↗
PubMed2002

Bilateral maxillary fourth molars and a supernumerary tooth in maxillary canine region--a case report.

The occurrence of supernumerary teeth is a relatively uncommon dental anomaly. The aetiology is not clear. Supernumerary teeth have frequently been observed as solitary teeth and impacted in the maxillary arch. This case report describes the rare presence of bilateral maxillary fourth molars and a supernumerary tooth in the maxillary canine region. On the left side, the third molar was extracted first, allowing the fourth molar to move into a more favourable position for later extraction. Two-year postoperative radiography confirmed that the supernumerary tooth had migrated occlusally and mesially permitting a safer extraction procedure.

Adult↗