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Results for “DENTIGEROUS CYST”

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At least 19 recordsLinked to original sources
PubMed2004

A comparative study of epithelial cell proliferation between the odontogenic keratocyst, orthokeratinized odontogenic cyst, dentigerous cyst, and ameloblastoma.

OBJECTIVES: The aim of the present study was to compare the proliferation index of the epithelial cells between odontogenic keratocysts (OKC), orthokeratinized odontogenic cysts (OOC), dentigerous cysts (DC), and ameloblastomas. MATERIALS AND METHODS: The proliferation index, employing a novel cell proliferation marker IPO-38, was studied by the immunohistochemical technique in 10 OKC, seven OOC, eight DC and 10 ameloblastomas. RESULTS: The ameloblastoma had no higher labeling index (LI) of IPO-38 than the OKC (P = 0.910) but had higher LI than the OOC (P = 0.001) and DC (P = 0.000); the OKC had higher LI than the OOC (P = 0.002) and DC (P = 0.000); and the OOC had higher LI than the DC (P = 0.011). IPO-38-positive cells in the OKC and OOC were located principally in the suprabasal cell layers while the ameloblastoma were found in the peripheral portion in particularly, the follicular and plexiform types. CONCLUSION: These findings support previous studies that the proliferation indices are useful in predicting the different biological behavior of the odontogenic lesions and the OKC should be regarded as a benign tumor rather than simply an odontogenic cyst.

Ameloblastoma↗
PubMed2006

Nasal septal abscess: An unusual presentation of dentigerous cyst.

Dentigerous cyst is one of the most prevalent types of odontogenic cysts and is associated with crown of an unerupted or developing tooth. Dentigerous cysts are usually asymptomatic, so facial swelling may be the first clinical sign of a dentigerous cyst. A dentigerous cyst forming a septal abscess is uncommon. We report a case of dentigerous cyst presenting as a septal abscess.

Abscess↗
PubMed1997

Using fenestration technique to treat a large dentigerous cyst.

Dentigerous cysts are commonly encountered in the practice of dentistry and oral and maxillofacial surgery. Treatment modalities range from enucleation to marsupialization, and are based on the premise that the pathological process can be controlled locally with minimal injury to the adjacent host structures. In a child, however, loss of permanent tooth buds in the management of a large dentigerous cyst can be devastating. This article describes the technique of fenestration, which removes this entity and preserves the developing dentition.

Child↗
PubMed2000

Immunohistochemical study of bcl-2 protein, Ki-67 antigen and p53 protein in epithelium of glandular odontogenic cysts and dentigerous cysts.

The aim of the present study was the evaluation of the immunohistochemical expression of the apoptosis-inhibiting protein bcl-2, the cell-cycle-related antigen Ki-67 and the p53 protein, which is involved both in cell cycle and apoptosis regulation, in the lining epithelium of glandular odontogenic cysts of the jaws. Formalin-fixed and paraffin-embedded tissue sections of three glandular odontogenic cysts and six dentigerous cysts were immunostained with a standard avidin-biotin peroxidase procedure, after microwave antigen retrieval. The glandular odontogenic cysts showed immunoreactivity for bcl-2 protein in the basal and suprabasal layers, while staining in dentigerous cysts was basal or focal. Most mucous cells and superficial cuboidal cells were negative. The percentage of Ki-67- or p53-positive cells was lower in glandular odontogenic cysts compared with dentigerous cysts. The findings suggest that the biological behavior of glandular odontogenic cysts may be associated with deregulation of cell death in the lining epithelium, while cell proliferation and p53 status do not seem to play a significant role.

Adolescent↗
PubMed2005

Management of extensive dentigerous cysts.

Dentigerous cysts are usually easy to treat when small. However, extensive cysts are more difficult to manage requiring cyst enucleation and extraction of associated teeth. We advocate the use of assessment criteria to dictate the treatment modality indicated in each individual case such as cyst size and site, patient age, the dentition involved, and the involvement of vital structures. Cyst enucleation without extraction of the impaction, and decompression are two treatment modalities indicated in growing children and adolescents to salvage the involved dentition.

Adolescent↗
PubMed1990

Differential diagnosis between cyst and tumor. Dentigerous cyst and ameloblastoma containing teeth.

A study was conducted on 21 cases of ameloblastoma (a type of tumor containing an embedded tooth) and 87 cases of dentigerous cyst. The former cases were selected from among those which had been diagnosed histopathologically. Using radiographs of these lesions, the following parameters were measured: 1) the distance between the cement-enamel junction of the embedded tooth and its attachment to the cystic wall; 2) the area of the radiolucent image (similar to the area with a cystic appearance). From measurements of the former parameter, it appeared that the embedded tooth extends more toward the root apex in ameloblastoma than in dentigerous cyst, whereas the latter parameter indicated that the radiolucent area varies in size slightly in ameloblastoma, but tends to be smaller in dentigerous cyst. Moreover, with regard to clustering between ameloblastoma and dentigerous cyst, no definite tendency was detected on distance, whereas only ameloblastoma without dentigerous cyst was seen above 20 cm2 of area.

Adolescent↗
PubMed1987

Aneurysmal bone cyst associated with a dentigerous cyst: report of case.

An aneurysmal bone cyst associated with a dentigerous cyst filled the entire maxillary right sinus and corresponding eroding portions. The report discusses the unusual presence of a dentigerous cyst, documentation of an aneurysmal bone cyst associated with a primary lesion, and offers suggestions as to the common pathogenesis of the two lesions.

Adult↗
PubMed1999

Squamous cell carcinoma arising in the epithelial lining of a dentigerous cyst.

The dentigerous cyst is a common oral lesion arising as a developmental anomaly during amelogenesis. In rare instances, the epithelial lining of these cysts may give rise to squamous cell carcinoma (SCC). Fewer than 50 cases of this rare entity have been reported in the world literature to date. We present an additional case of SCC arising in a dentigerous cyst with a rationale for our treatment approach. In addition, we offer a review of the literature and a review of the clinical, histologic, and radiographic findings associated with this finding. We discuss epidemiologic data and treatment options.

Carcinoma, Squamous Cell↗
PubMed1980

Experimental dentigerous cysts and enamel hypoplasia: their possible significance in explaining the pathogenesis of human dentigerous cysts.

Cysts lined by epithelium were often found in association with tooth-germ isografts in hamster cheek pouch. They developed from odontogenic epithelium and were in close relation to the crowns of involved teeth. Cysts associated with tooth-germ isografts from 5-day-old animals (17 out of 36) commenced their formation shortly after transplantation as a result of enamel organ degeneration. Teeth associated with these cysts often showed enamel hypoplasia. Accordingly, 86 teeth involved in human dentigerous cysts were examined and 43 were found to possess areas of enamel hypoplasia on their occlusal surfaces or incisal edges. It is suggested that the pathological process initiating cystic degeneration in the enamel organ was also accompanied by degeneration of ameloblasts. When tooth germs from 2-day-old hamsters were transplanted, cystic spaces developed only after completion of enamel formation, 6 weeks following transplantation (in six out of 11 transplants), as a result of separation between the cells of the reduced enamel epithelium. Enamel hypoplasia was not a conspicuous feature. These experimental and clinical observations suggest that there may be at least two types of dentigerous cyst, perhaps with different causes, arising at different stages of tooth development.

Animals↗
PubMed2003

Dentigerous cyst in the maxillary sinus: a rare cause of nasolacrimal obstruction.

The main types of maxillary cysts are antral mucoceles, retention cysts, pseudocysts, dentigerous cysts and keratocysts. Despite the theoretical possibility of maxillary sinus cysts leading to nasolacrimal duct obstruction, only two cases have been reported in the literature so far. The present authors report this rare presentation of a dentigerous cyst with a tooth in the roof of the maxillary sinus, which led to nasolacrimal duct obstruction.

Adult↗
PubMed1990

Dentigerous cysts (ovine odontogenic cysts) in sheep.

Dentigerous cysts appear to be reasonably common near the mandibular incisors of sheep in New Zealand. Their aetiology, true prevalence, and, therefore, their economic significance, are not known at present. They appear as solitary swellings, grow slowly, and are lined by stratified squamous epithelium. Each example usually contains a single, unerupted tooth; however, the anatomical relationship of this tooth to the cyst wall differs from that in dentigerous cysts in humans. Moreover, as some do not contain an unerupted tooth, the term dentigerous is not entirely appropriate but is supported by common usage. Work is in progress to study these lesions further and to clarify their aetiology. There is no practical treatment.

Journal Article↗
PubMed1995

Identifying a deciduous dentigerous cyst.

While the dentigerous cyst is not uncommon, its development as a result of an impacted deciduous tooth is rare. According to the authors' search, this case is only the fifth of its type reported in the dental literature. The authors review the presentation and treatment of a deciduous dentigerous cyst.

Adult↗
PubMed2002

Differential diagnosis between dentigerous cyst and benign tumor with an embedded tooth.

It has been generally recognized that the radiological appearances of cysts and tumors related to an embedded tooth are similar. However, based on their clinical experience, Abrams et al. pointed out that there was a difference between the two lesions at the attachment point to the embedded tooth. To investigate this difference, we conducted a study employing the radiographs of patients who visited Nihon University Dental Hospital at Matsudo and were pathologically defined as having a cyst or tumor. Using radiographs of these patients, we investigated the attachment point to the embedded tooth, and expressed the results as the proportion of the attachment point to the embedded tooth root length. The study was carried out in 100 patients with cysts (87 dentigerous cysts and 13 odontogenic keratocysts), and 27 patients with benign tumors (24 ameloblastomas and three adenomatoid odontogenic tumors). Prior to treatment based on the numerical results, the distribution of the results was examined. Thus, we evaluated several methods of examining the distributions, and found the best method to be discriminant analysis. The results showed that the discriminated boundary value (from the cemento-enamel junction) was 0.38 for the embedded tooth root length. The cases showing a boundary value of less than 0.4 for the cemento-enamel junction were judged to be cysts, and those showing a value of 0.4 or more were judged to be benign tumors. The rate of misjudgement was 28% in the cyst group and 33.3% in the benign tumor group.

Adolescent↗
PubMed1988

Dentigerous cysts associated with supernumerary teeth.

Dentigerous cysts associated with supernumerary teeth are rare and estimated to constitute 5-6% of all dentigerous cysts. They resemble the usual dentigerous cysts in terms of sex predilection and age distribution. The vast majority, about 90%, are associated with a maxillary mesiodens. The literature is reviewed and 6 additional cases reported.

Adult↗