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Ponniah I.,Tamil Nadu Government Dental College and Hospital
Journal of investigative and clinical dentistry | Year: 2012

There have been a number of papers that have addressed the issue of plagiarism. Nevertheless, the charges of plagiarism usually merit little attention with experts, because it is still not clear what sort of copying actually constitutes plagiarism. Another problem that eludes consensus is whether plagiarism was committed with or without intention. This paper discusses certain issues relating to plagiarism and differentiates between intentional and unintentional forms of plagiarism. © 2011 Blackwell Publishing Asia Pty Ltd. Source


Gnanadeepam S.,Tamil Nadu Government Dental College and Hospital | Ponniah I.,Tamil Nadu Government Dental College and Hospital
Oral and Maxillofacial Surgery | Year: 2012

Background: Fibro-osseous lesion are a group histologically similar lesions but with characteristic clinical and radiographic features. The definitive diagnosis of these lesions requires integration of clinical, radiological, histological, and gross surgical features. Ossifying fibroma is an encapsulated lesion that is often found in the mandible of middle-aged females. Case report: We report a case of ossifying fibroma in a 25-year-old female with associated non-specific cystic changes and mimicking simple bone cyst. Conclusion: The case reported here is diagnostically challenging and requires proper integration of clinical, radiological, histological, and gross surgical features to reach definitive diagnosis. © 2011 Springer-Verlag. Source


Ponniah I.,Tamil Nadu Government Dental College and Hospital
Journal of Oral and Maxillofacial Pathology | Year: 2011

Unicystic ameloblastoma (UCA) is a clinical subtype of ameloblastoma that is considered prognostically different. The purpose of this report is to present a case of UCA showing dual radiographic pattern in a child. A detailed study of the lesion was carried out in an 8 year old female child who presented to our department of oral and maxillofacial pathology. Clinical, radiological and histopathological findings were recorded. In March 2005, a painless swelling in the left side of the mandible was noted, which on radiographic examination showed a unilocular radioluceny enclosing the crown of mandibular left permanent second molar, extending between the left first permanent molar and anterior margin of the ramus. Histopathologic diagnosis was UCA. The lesion was treated by enucleation. The patient returned with recurrence in 2009, at this time the lesion radiographically presented as a multilocular radiolucency with a soap bubble appearance, extending between the anterior border of the ramus and second premolar. Histopathologic diagnosis was UCA. The lesion was treated by segmental resection with immediate reconstruction. Although a number of treatment modalities are available to treat UCA, many factors need to be taken into consideration in the treatment of UCA in children. Source


Ponniah I.,Tamil Nadu Government Dental College and Hospital | Rajan S.,Tamil Nadu Government Dental College and Hospital
Indian Journal of Pathology and Microbiology | Year: 2012

Extramedullary plasmactyoma is the solitary, soft tissue form of plasma cell neoplasm but lack the defining features of medullary or multiple myeloma. The diagnosis is difficult to make in routine practice setting due to the morphological and immunohistochemical overlap with plasmablastic lymphoma. We report a case of plasmablastic extramedullary plasmacytoma in a 52-year-old in the mandibular lingual gingiva and discuss its differential from plasmablastic lymphoma. The gingival mass regressed with primary radiotherapy. Source


Gupta B.,Tamil Nadu Government Dental College and Hospital | Ponniah I.,Tamil Nadu Government Dental College and Hospital
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology | Year: 2010

Objective: This hospital-based study was designed to provide demographic data on odontogenic tumors from the southern Indian population in the state of Tamil Nadu for comparison with pertinent series from other geographic regions. Study design: A total of 489 cases of odontogenic tumors registered over a period of 38 years (February 1970-March 2008) in the Department of Oral and Maxillofacial Pathology of Tamil Nadu Government Dental College and Hospital, Chennai, India, were retrieved from the files of histopathology registers and were retrospectively analyzed. Results: Odontogenic tumors in the present study constituted 4.13% of all the 11,843 registered biopsies. The mandible was the most commonly affected anatomic location, with 362 cases (74.02%). Ameloblastoma with a predilection for posterior mandible was the most frequent odontogenic tumor (67.69%), followed by adenomatoid odontogenic tumor (9%), odontoma (7.77%), and calcifying odontogenic cyst (5.52%). The patients were affected over a wide age range of 5-75 years with a mean age of 32.64 years and peak occurrence in the second and third decades of life. Among the 489 cases, only 15 (3.07%) were malignant. Conclusion: The relative frequency of 4.13% of odontogenic tumors observed in this study, which is the largest series from this part of the world. Ameloblastoma formed the single most common tumor of all odontogenic tumors. This study observed both regional and geographic variations in the frequency and distribution of odontogenic tumors. © 2010 Mosby, Inc. All rights reserved. Source

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