Most odontogenic keratocyst 60% arise from dental lamina rests or from the basal cells of oral epithelium and are thus primordialorigin odontogenic keratocysts figure 7a 10. Odontogenic keratocyst a case presentation purshotam nainani 1, anish gupta, pratibha kavle2, amit mathur3 abstract. Odontogenic keratocyst of the maxilla 2 the most striking feature is the cysts capacity for recurrence. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Mufeed a, vengal m, issac jk, vazhagan v, noufal a. Introduction a cyst is an epithelium lined sac containing fluid or semifluid material the epithelial cells first proliferate and later undergo degeneration and liquefaction grow by expansion, causing displacement of adjacent teeth 3. Odontogenic keratocyst looks can be deceptive, causing. Odontogenic cysts and tumors ppt linkedin slideshare. This condition is often encountered in young patients. Winner of the standing ovation award for best powerpoint templates from presentations magazine. It can occur at any age but most develop during the second and third decade. Odontogenic keratocysts okc, previously known as keratocystic odontogenic tumors kcot or kot, are benign cystic lesions involving the mandible or maxilla and are believed to arise from dental lamina.
This reflects the dearth of information concerning the behavior and management of odontogenic keratocyst. Keratocystic odontogenic tumour occurring in the anterior mandible. Keratocystic odontogenic tumour of lesions treated in our clinic. Appearance in an odontogenic keratocyst of the mandible. Currently, this tumour is classified as a benign neoplasm of odontogenic origin and not as a cyst. Aug 07, 2016 odontogenic keratocyst enucleation by manish pandit, nilesh pagaria. Okc is known for its rapid growth 35 and its tendency to invade the adjacent tissues including bone. Jan 04, 2015 vered m, peleg o, taicher s, buchner a. Keratocystic odontogenic tumor are considered to be benign, even though they are locally aggressive and show high recurrence rates after conservative management. The odontogenic keratocyst philipsen in 1956, while still a senior dental student working with jens j pindborg in copenhagen, named and described the odontogenic keratocyst. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
In honor of that tradition, and since most people still refer to it as an odontogenic keratocyst, im going to call it odontogenic keratocyst throughout this article. A 14yearold caucasian girl presented for observation of bilateral agenesis. Okcs have been reclassified under odontogenic tumours in 2005 by the who and have since been termed as keratocystic odontogenic tumours kcots. The odontogenic keratocyst can be defined as a cystic benign tumor, being localized at the level of the mandible or the maxilla. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Radiographically, most okcs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst. Introduction a cyst is an epithelium lined sac containing fluid or semifluid material the epithelial cells first proliferate and later undergo degeneration and liquefaction grow by. When the cyst is multilocular and located at the molar ramus area, it may be. Odontogenic keratocyst definition of odontogenic keratocyst. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. The remaining 40% arise from the reduced enamel epithelium of the dental follicle and are thus dentigerousorigin odontogenic keratocysts figure 7 b as we. Odontogenic keratocyst symptoms, treatment, pictures. Odontogenic keratocysts make up around 19% of jaw cysts. Odontogenic keratocyst okc is the cyst arising from the cell rests of dental lamina. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. There were 18 lesions in the posterior mandible, 3 in the anterior mandible and 6 in the posterior maxilla fig. Histologic examination revealed an odontogenic keratocyst with no evidence of mineralization or calcification within the lesion. May 02, 2016 pathology odontologia created using powtoon free sign up at create animated videos and animated presentations for fre.
A case report of odontogenic keratocyst in anterior. Whether these lesions are developmental or neoplastic is controversial, with the 2017 who classification placing it back into the development lesion category. Envelopmental this is an odontogenic keratocyst which embraces or envelopes an adjacent unerupted tooth. Here we report a case of a recurrent buccal lesion in a 62yearold. It most often affects the posterior mandible and most commonly presents in the third decade of life. The odontogenic keratocyst okc is regarded as an aggressive lesion due to its characteristic high tendency to recur,and to invade adjacent tissues 15 singh m, gupta kc. Odontogenic cysts and tumors michael underbrink, md anna pou, md february, 2002 introduction variety of cysts and tumors uniquely derived from tissues of. Odontogenic keratocyst looks can be deceptive, causing endodontic misdiagnosis. Orthokeratinized odontogenic keratocyst is a lessaggressive nonsyndromic variant of odontogenic keratocyst okc.
In this case report, we are highlighting an unusual presentation of okc with. Apr, 2016 odontogenic keratocyst or keratocystic odontogengic tumor. The world health organization who has reclassified odontogenic keratocyst okc to keratocystic odontogenic tumour kcot in 2005. Keratocystic odontogenic tumor kcotokcclinical guidelines. Treatment of these lesions with conservative techniques such as marsupialization and decompression have proven and lasting. An expansile lesion in the body of the left mandible had high attenuation 225 hu on nonenhanced ct scans. Treatment consisted of enucleation and curettage for 22 of the lesions, resection for 2 and marsupialization for 3. Shawneen gonzalez post author august 14, 2015 at 1. Odontogenic keratocyst parakeratinized versus orthokeratinized. A case report of odontogenic keratocyst in anterior mandibule. Odontogenic keratocyst circumscribed ddmfr oral and. The immunoprofile of odontogenic keratocyst keratocystic odontogenic tumor that includes expression of ptch, smo, gli1 and bcl2 is similar to ameloblastoma but different from odontogenic cysts.
Involvement of soft tissues by odontogenic keratocyst primordial cyst. Odontogenic keratocyst dr henry knipe and assoc prof frank gaillard et al. An odontogenic keratocyst is a rare and benign but locally aggressive developmental cyst. One manifestation of the basal cell nevus syndrome. Surgical treatment of odontogenic keratocyst by enucleation.
The odontogenic keratocyst okc is the most important of the toothderived cysts. Previously classified under developmental odontogenic cyst. Ameloblastoma tends to cause more resorption of teeth and expansion of bone first. They present more commonly in the posterior mandible of young adults than the maxilla. It is usually located in the mandible posterior body and ramus region. They typically appear as an expansile solitary unilocular lesion extending longitudinally in the mandible. Odontogenic keratocyst okc is an odontogenic cyst and because of its ability in growth and creation tumoral lesions is placed in odontogenic tumor okt. In case of unilocular lucencies dentigerous cyst, eruption cyst, coc, aot, unicystic ameloblastoma etc. Pogrel, in current therapy in oral and maxillofacial surgery, 2012. Keratocystic odontogenic tumor grows along jaws first. A free powerpoint ppt presentation displayed as a flash slide show on id. The designation keratocyst was used to describe any jaw cyst in which keratin was formed to a large extent.
Developmental odontogenic cysts flashcards quizlet. Typical pathology proven case of odontogenic keratocyst which is a benign cystic lesion involving the mandible or maxilla. Ppt odontogenic keratocyst powerpoint presentation. For your viewing pleasure, heres a photo of what an odontogenic keratocyst looks like at the cellular level thanks to nephron for the photo. Present study is a case report of a 22 year old man presenting with a symptomatic swelling on the gingiva between. Odontogenic keratocyst radiology reference article. Also known as the keratocystic odontic tumor, it is believed to be stemming from the dental lamina. Odontogenic keratocyst enucleation by manish pandit, nilesh pagaria. A case report of an unusual presentation of a keratocystic. Odontogenic keratocyst marsupialization and decompression. Whether these lesions are developmental or neoplastic is controversial, with the 2017 who classification placing.
The odontogenic keratocyst okc was first described in 1876 1 and named by phillipsen in 1956. The distinction between keratocystic odontogenic tumor and other. Odontogenic keratocyst treatment with marsupialization and decompression. Peripheral odontogenic keratocyst research nebraska. Odontogenic cysts are closed sacs, and have a distinct membrane derived from rests of odontogenic epithelium. Odontogenic keratocysts okcs are developmental cysts which occur typically in the jawbones. Ppt odontogenic cysts and tumors powerpoint presentation. A case series odontogenic cysts such as the odontogenic keratocyst are benign lesions that have the potential for aggressive infiltrative behavior and undesirable comorbidities.
We analyzed the etiopathogenetic, clinical, radiographic, and histopathologic aspects of keratocystic odontogenic tumors, particularly in association with dental anomalies of number, with the aim of providing useful information for their correct diagnosis, treatment, and prognosis within a multidisciplinary approach. Present study is a case report of a 22 year old man presenting with a symptomatic swelling on the gingiva between the mandibular right premolars and canine. Treatment of these lesions with conservative techniques such as marsupialization and decompression have proven and lasting benefits. Keratocystic odontogenic tumour an overview sciencedirect. Odontogenic cysts are largely classified based on their location, viability of the associated tooth and clinical setting the principal exception to this is the odontogenic keratocyst, which can occur in any site or setting unlike most of the other cysts, it has aggressive potential.
Odontogenic keratocyst okc is a developmental cyst of tooth origin with an aggressive behaviour including high recurrence rate. The orthokeratinizing odontogenic cyst is considered an unrelated entity without risk of recurrence or aggressive growth or association with nevoid basal cell carcinoma syndrome. Keratocystic odontogenic tumour kcota cyst to a tumour. The odontogenic keratocyst is an important part in the clinical features of basal cell nevus syndrome or gorlin and goltz syndrome. These tumors are more common in the mandible and are treated with segmental resection with selective neck dissection for the n0 neck or modified radical neck dissection if positive nodes are present. Presentation of a keratocystic odontogenic tumor with. A large extragnathic keratocystic odontogenic tumour. Treatment consisted of enucleation and curettage for 22 of the lesions, resection. Odontogenic cysts were not considered in the new 2005 classification, which means that the previous 1992 classification is still relevant for cysts of the jaws and maxillofacial region, with one notable exception. An odontogenic keratocyst is a benign but locally aggressive developmental odontogenic cyst. An odontogenic keratocyst can develop at virtually any site in the jaws and is of concern because of its aggressive clinical behavior.
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