Imaging Characteristics of Odontogenic Cysts and Tumours: a Retrospective Cone Beam Computed Tomography Study
Mailon Cury CarneiroElen de Souza TolentinoLorena Borgognoni AquaroniMilenka Gabriela Quenta-HuayhuaBernardo da Fonseca OrcinaVerônica Caroline Brito ReiaIzabel Regina Fischer Rubira‐Bullen
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Keywords:
Perforation
Mandible (arthropod mouthpart)
Radicular Cyst
Adenomatoid odontogenic tumor
Variation (astronomy)
Cone-Beam CT
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Inflammatory jaw cysts comprise a group of lesions that arise as a result of epithelial proliferation within an inflammatory focus due to a number of causes.Radicular cysts are the most common inflammatory cysts.These cysts are found most commonly at the apices of the involved teeth.These cysts are seldom very large and very rarely cross the midline.There has been a review for Odontogenic keratocyst that it may grow to a very large size before it manifests clinically.Large size of OKC contributes to one of the reasons for considering it as a cystic neoplasm.In the present case, size of the cyst was enormous which was confusing which on histological examination was confirmed as a radicular cyst.
Keratocyst
Radicular Cyst
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TNF-alpha is a pleiotropic cytokine that is considered as a primary modifier of inflammatory and immune reaction in response to various inflammatory diseases and tumour. We investigated levels of TNF-alpha in 43 radicular cysts and 15 odontogenic keratocysts, obtained from patients undergoing surgery, under local anaesthesia, and after aspiration of cystic fluid from non-ruptured cysts. TNF-alpha is elevated in both cysts' fluid, but higher values were found in radicular cysts in comparison to keratocysts. The significantly higher concentration of TNF-alpha was associated with smaller radicular cysts, higher protein concentration, higher presence of inflammatory cells in peri cystic tissues, and the degree of vascularisation and cysts wall thickness (Mann-Whitney U-test, p < 0.05). No correlation was found based on these parameters in odontogenic keratocyst, but all cysts have detectable concentrations of TNF-alpha. We here for the first time present that a difference in the concentration of TNF-alpha exists between these two cystic types.
Radicular Cyst
Keratocyst
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ABSTRACT Surgical enucleation of a radicular cyst is a common treatment in endodontics but the pretreatment planning and assessment of the post-treatment healing in the cystic cavity is of utmost importance. The advantage of cone beam computed tomography (CBCT) in endodontics is that it demonstrates anatomic features in three dimensions that is not possible with intraoral periapical (IOPA) and panoramic radiographic images. In this case report, a CBCT was done to evaluate the size and extent of the radicular cyst in the maxillary anterior region and was enucleated. Apicoectomy was done and the hollow cavity was filled with platelet rich fibrin. A postoperative CBCT was done 2 years later to assess the healing. Specific situations, both pre- and postoperatively, where the understanding of spatial relationships afforded by CBCT facilitates diagnosis, influences treatment and assess healing. How to cite this article Pai S, Kamath AT, Bhagania M, Shenoy N, Saraswathi MV. Assessment of Healing of a Large Radicular Cyst using Cone Beam Computed Tomography: Two Years Follow-up. World J Dent 2016;7(1):47-50.
Radicular Cyst
Platelet-rich fibrin
Apicoectomy
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To compare the polarization colors of collagen fibers of odontogenic keratocyst (OKC), radicular cyst, dentigerous cyst, and adenomatoid odontogenic tumor (AOT) with reference to their biological behavior.Twenty cases each of OKC, radicular cyst, dentigerous cyst, and AOT were stained with picrosirius red stain and studied under polarized light.A predominance of green to greenish yellow thick fibers was noted in OKC and AOT as compared to dentigerous cyst and radicular cyst. There was no significant difference between the polarization colors of the thin fibers in all the three groups.The stroma of OKC and AOT consists of poorly packed or pathologic collagen and plays a role in its neoplastic behavior.
Radicular Cyst
Keratocyst
Adenomatoid odontogenic tumor
Dentigerous cyst
Odontogenic cyst
Stain
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Adenomatoid odontogenic tumor (AOT) is a distinct odontogenic tumor, which accounts for about 3%–7% of all odontogenic tumors. It is a benign (hamartomatous), noninvasive lesion with slow but progressive growth. It is predominantly found in young female patients, located more often in the maxilla associated with an unerupted permanent tooth. Treatment is conservative surgical excision, and the prognosis is excellent. Here, we report a case of AOT in the maxilla in a young male aged 14 years.
Adenomatoid odontogenic tumor
Anterior maxilla
Odontogenic tumor
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Radicular Cyst
Mandible (arthropod mouthpart)
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Here, we report a case of adenomatoid odontogenic tumor in anterior maxilla in a young girl aged 14 years. Adenomatoid odontogenic tumor is a rare, benign, and distinct slow-growing odontogenic neoplasm which results in painless expansion of jaws. It usually occurs in the anterior maxilla followed by posterior maxilla and rarely in the mandible with an age range of 3 to 82 years and a relative frequency of 2.2% to 7.1% and showing a female predilection (1.9:1).
Adenomatoid odontogenic tumor
Anterior maxilla
Mandible (arthropod mouthpart)
Odontogenic tumor
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The purpose of this study was to compare the proliferative activity of epithelia in odontogenic keratocysts (5 cases), follicular dental cysts (5 cases) and radicular cysts (5 cases) by using nucleolar organizer regions (Ag-NORs) and proliferating cell nuclear antigen (PCNA) in conjunction with computer-assisted imageanalysis. The following results were obtained:The mean numbers of Ag-NORs were 2.03±0.45 in odontogenic keratocysts, 1.38±0.16 in follicular dental cysts and 1.45±0.21 in radicular cysts. The difference in the mean number of Ag-NORs between odontogenic keratocysts and the other two types of cysts was statistically significant (P<0.05).PCNA-positive scores were 20.3±10.3% in odontogenic keratocysts, 11.7±9.9% in follicular dental cysts and 11.5±7.3% in radicular cysts. The difference in PCNA-positive score between odontogenic keratocysts and the other two types of cysts was also significant (P<0.05).However, there was no correlation between the mean number of Ag-NORs and PCNApositive score. Thus, the epithelia of odontogenic keratocysts had high proliferative activity from the viewpoint Ag-NORs and PCNA.
Radicular Cyst
Adenomatoid odontogenic tumor
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