Odontogenic Tumors (Dental Tissue Neoplasm)

01/01/2015 - "The objective of this study was to analyze the frequency and distribution of odontogenic tumors (OTs) in the Cappadocia region of Turkey, and to compare the findings with those reported in the literature. "
11/01/2012 - "The aim of this study was to record the relative frequency of odontogenic tumors (OTs), evaluate and analyze the epidemiological features of the lesions in patients referring to dental faculty of Isfahan and compare these data with previous studies. "
04/15/2012 - "The present study is to determine the frequency of odontogenic tumors (OTs) in Sri Lankan population. "
11/01/2011 - "The objective of the study was to determine the relative frequency of odontogenic tumors (OTs) in the world population, directing an epidemiologic profile to these lesions. "
04/01/2011 - "In addition, the literature was searched for studies on odontogenic tumors (OTs) according to the 2005 WHO classification. "

01/01/2015 - "The adenomatoid odontogenic tumor (AOT) represents 3-7% of all odontogenic tumors, and over 750 cases have been reported in the literature. "
01/01/2014 - "The adenomatoid odontogenic tumor (AOT) is a quite rare odontogenic tumor, with an incidence rate of approximately 12 cases/year worldwide. "
03/01/2013 - "Adenomatoid odontogenic tumor (AOT) is a benign odontogenic tumor with slow but progressive growth. "
01/01/2013 - "Adenomatoid odontogenic tumor (AOT) is a relatively rare odontogenic tumor that is exclusively odontogenic epithelium in origin. "
12/01/2012 - "Calcifying cystic odontogenic tumor and adenomatoid odontogenic tumor: radiographic evaluation."

07/01/2013 - "There was no correlation between E-cadherin and CD1a-positive LCs between all odontogenic tumors that were studied (P > 0.05, Spearman test). "
01/01/2015 - "In the present study, loss of E-cadherin expression in epithelial cells, strong CD138 expression in stromal cells and strong nuclear survivin expression both in epithelial and stromal cells in cystic ameloblastomas and keratocystic odontogenic tumors were the most remarkable findings. "
07/01/2013 - "The aim of this study was to investigate, using immunohistochemistry, the distribution of CD1a-positive cells in ameloblastomas and KOTs and their relationship with E-cadherin, in comparison to calcifying cystic odontogenic tumor (CCOT). "
07/01/2013 - "CD1a-positive Langerhans cells and their relationship with E-cadherin in ameloblastomas and keratocystic odontogenic tumors."
04/01/1999 - "Expression of E-cadherin and alpha-catenin in epithelial odontogenic tumors: an immunohistochemical study."

04/01/2009 - "In the present study, 131 keratocystic odontogenic tumors were analyzed by immunohistochemistry for the expression of sonic hedgehog signaling proteins SHH, PTCH1, SMO, GLI1, and NMYC on tissue microarray sections. "
07/01/2015 - "Participation of hMLH1, p63, and MDM2 proteins in the pathogenesis of syndromic and nonsyndromic keratocystic odontogenic tumors."
01/01/2014 - "Additionally, as both proteins were overexpressed by odontogenic epithelium, their possible roles need to be further explored in benign odontogenic tumors."
01/01/2014 - "No correlation between both proteins in keratocystic odontogenic tumors was detected by Spearman test. "
07/01/2012 - "These results, together with the expression of these two proteins in the epithelium of tooth germs, suggest that the HGF/c-met pathway is involved in the differentiation of odontogenic tumors. "

03/01/2014 - "The presence of keratin in radicular lesions must be carefully evaluated to eliminate the diagnosis of lesions with more aggressive behavior, such as an OOC or even a keratocystic odontogenic tumor. "
04/01/2009 - "Immunoexpression of keratins in the calcifying cystic odontogenic tumor epithelium."
03/01/2008 - "Two of three calcifying epithelial odontogenic tumors and five of five GOCs were also positive for a low molecular weight cytokeratin (CK7). "
11/01/1988 - "The differentiation-specific keratin transcript (K 10) was not present at detectable levels in this type of odontogenic tumors. "
12/01/2010 - "Comprehensive keratin profiling reveals different histopathogenesis of keratocystic odontogenic tumor and orthokeratinized odontogenic cyst."

09/01/2001 - "In the present study, we investigated the localization of amelogenin in odontogenic tumors, using an anti-amelogenin polyclonal antibody. "
03/01/2012 - "Expression of odontogenic ameloblast-associated protein, amelotin, ameloblastin, and amelogenin in odontogenic tumors: immunohistochemical analysis and pathogenetic considerations."
10/01/2001 - "Human matrix metalloproteinase-20 (MMP-20, enamelysin) fragments the enamel-specific protein amelogenin and has been shown to be synthesized exclusively by odontoblasts and ameloblasts and in certain odontogenic tumors. "
09/01/2001 - "The results indicate that the present antibody for amelogenin is useful for the determination of odontogenic tumors, especially in those in which small mineralized foci are present in the epithelial nests."
09/01/2001 - "Immunohistochemical localization of amelogenin in human odontogenic tumors, using a polyclonal antibody against bovine amelogenin."

12/01/2006 - "In the present study the significance of nuclear/cytoplasmic expression of beta-catenin (CTNNB1) and mutation of the CTNNB1 gene (CTNNB1) in odontogenic tumors was examined. "
12/01/2006 - "Gene mutation analysis and immunohistochemical study of beta-catenin in odontogenic tumors."
09/01/2013 - "Beta-catenin and survivin expression in keratocystic odontogenic tumor (KCOT). "
02/01/2009 - "Our findings suggest that aberrant beta-catenin expression and APC missense mutation may play an important role for the pathogenesis of epithelial odontogenic tumors."
02/01/2009 - "This study was conducted to clarify the relation of beta-catenin accumulation and the mutation of the CTNNB1 (beta-catenin) gene with the mutation of APC gene in the process of development of odontogenic tumors including ameloblastoma and odontogenic carcinoma (OC). "

10/01/2002 - "Differential expression of collagen IV alpha1 to alpha6 chains in basement membranes of benign and malignant odontogenic tumors."
04/01/2011 - "The present study was undertaken to detect and compare the pattern of collagen fibers in odontogenic cysts and also to find out if this methodology could be used to predict the aggressive nature of odontogenic cysts by comparing with the odontogenic tumors. "
04/01/2011 - "Similar birefringence pattern of collagen fibers between dentigerous cysts, odontogenic keratocysts and odontogenic tumors may indicate that these lesions have a common histogenesis with a broad spectrum of biological behavior and belong to the same group, i.e., are developmental in origin. "
04/01/2011 - "In dentigerous cysts, odontogenic keratocysts and odontogenic tumors, the predominant color of collagen fibers birefringence was found to be orangish red, whereas in radicular cysts the collagen fiber was of green color. "
10/01/2011 - "The aim of this study was to evaluate the immunohistochemical expression of collagen IV, matrix metalloproteinase (MMP) 9 and tissue inhibitor of MMP (TIMP) 2 in dentigerous cysts (DCs), radicular cysts (RCs), keratocystic odontogenic tumors (KOTs), and ameloblastomas. "

05/01/2014 - "This study aimed to evaluate syndecan-1 and Ki-67 expression in ghost cell-containing odontogenic tumors. "
01/01/2011 - "The aim of this study was to assess the immunohistochemical expression of syndecan-1 (CD138) and Ki-67 in radicular cysts (RC), dentigerous cysts (DC) and keratocystic odontogenic tumors (KOT). "
05/01/2014 - "Clinicopathologic analysis and syndecan-1 and Ki-67 expression in calcifying cystic odontogenic tumors, dentinogenic ghost cell tumor, and ghost cell odontogenic carcinoma."
02/01/2013 - "Syndecan-1 (CD 138) surface expression marks cell type and differentiation in ameloblastoma, keratocystic odontogenic tumor, and dentigerous cyst."

01/01/2015 - "The aim of the current study was to investigate the presence of human papillomavirus (HPV) and evaluate its association with Ki-67 and cyclooxygenase-2 (COX-2) expressions in keratocystic odontogenic tumor (KCOT). "
03/01/2011 - "The aim of the present study was to investigate the association between the expression of cyclooxygenase-2 (COX-2) in keratocystic odontogenic tumors (KCOT) and more commonly used markers, such as p53 and Ki-67. "
03/01/2011 - "Expression of cyclooxygenase-2 (COX-2) in 20 biopsy specimens of keratocystic odontogenic tumors (KCOT) has been analyzed and compared with the expression of previously reported markers Ki-67 and p53. "
09/01/2014 - "AP, alkaline phosphatase; CK, cytokeratin; COL1A1, collagen type I α1; COX-2, cyclooxygenase-2; GM-CSF, granulocyte-macrophage colony-stimulating factor; IL-1α, interleukin 1α; KCOT, keratocystic odontogenic tumor; NBCCS, nevoid basal cell carcinoma syndrome; NS-KCOT, non-syndrome-associated KCOT; OCN, osteocalcin; OPG, osteoprotegerin; OPN, osteopontin; RANKL, receptor activator of nuclear factor-kappa B ligand; Runx2, runt-related transcription factor 2; S-KCOT, syndrome-associated KCOT; TAF, tumor-associated fibroblast; and TRAP, tartrate-resistant acid phosphatase."

09/01/2006 - "To determine the relative frequency of central odontogenic tumors in relation to all biopsy specimens and to one another in an oral pathology biopsy service and to compare the data with previous studies from different parts of the world. "
08/01/2006 - "The aim of this study was to determine the relative frequency of peripheral (extraosseous) odontogenic tumors relative to one another and relative to their central (intraosseous) counterparts in an oral pathology biopsy service and to compare these data with information available in the literature. "
06/01/2008 - "The pathology records of the Department of Oral Pathology, Nair Hospital Dental College, from January 1971 to December 2006 were reviewed retrospectively, and based on World Health Organization classifications, 1992, we reclassified and analyzed the odontogenic tumors. "
05/01/2007 - "A total of 226 cases of odontogenic tumors reported by the Department of Oral Pathology, Faculty of Dental Sciences, University of Peradeniya between 1996 and 2002, were analyzed. "
08/01/2002 - "We reviewed the records of 28,041 specimens from 1975 to 2000 in the Oral Pathology Referral Institute (IREPO), and using the criteria for histological typification published by the World Health Organization in 1992, we reclassified the odontogenic tumors. "

06/01/2011 - "This study describes the technique of lesion enucleation without capsule disruption combined with liquid nitrogen cryotherapy in the surgical treatment of keratocystic odontogenic tumors (KOTs). "
06/01/2011 - "Enucleation and liquid nitrogen cryotherapy in the treatment of keratocystic odontogenic tumors: a case series."

07/01/1991 - "The present study was carried out to investigate odontogenic tumor induction in the rats by injections of carcinogen N-ethyl-N-nitrosourea (ENU) coupled with incisional wounds. "
07/01/1991 - "Experimental odontogenic tumors produced by ethylnitrosourea injections and mechanical injuries."

01/01/2015 - "The records of the Oral and Maxillofacial Surgery and Pathology Departments at Erciyes University, with histologic diagnosis of odontogenic tumors (based on the World Health Organization classification, 2005), over a 12-year period, were analyzed. "
05/01/2014 - "Management of the keratocystic odontogenic tumor has been one of the most controversial entities of the maxillofacial surgery. "
03/01/2012 - "We evaluated clinical characteristics of calcifying cystic odontogenic tumors in 21 cases at the Maxillofacial Surgery, Tokyo Medical and Dental University Hospital, between January 1979 and December 2006. "
07/01/2011 - "A retrospective review of the computed tomography images obtained for odontogenic tumors and vascular anomalies treated at the Department of Oral and Maxillofacial Surgery, University of Illinois at Chicago, from January 2000 to June 2010 was undertaken. "
02/01/2010 - "Records of the Oral and Maxillofacial Surgery and Oral Pathology Departments, Faculty of Dentistry, Mansoura University, with histologic diagnosis of odontogenic tumors (based on the World Health Organization classification, 2005), during a 15-year period, were analyzed. "

07/01/2015 - "Decompression of an Enormous Keratocystic Odontogenic Tumor."
11/01/2012 - "Decompression for management of keratocystic odontogenic tumor in the mandible."
09/01/2010 - "The purpose of this case report was to demonstrate a conservative approach in the treatment of an extensive keratocystic odontogenic tumor, located in the mandible's posterior region, using decompression and enucleation."
05/01/2012 - "The authors report a case of a 14-year-old patient with a keratocystic odontogenic tumor located in the right maxilla, which was treated by decompression followed by enucleation with curettage. "
12/01/2014 - "The effectiveness of decompression for patients with dentigerous cysts, keratocystic odontogenic tumors, and unicystic ameloblastoma."