They typically appear as an expansile solitary unilocular lesion extending longitudinally in the mandible. Odontogenic keratocyst dr henry knipe and assoc prof frank gaillard et al. Shawneen gonzalez post author august 14, 2015 at 1. Mufeed a, vengal m, issac jk, vazhagan v, noufal a. 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. 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. An expansile lesion in the body of the left mandible had high attenuation 225 hu on nonenhanced ct scans. There were 18 lesions in the posterior mandible, 3 in the anterior mandible and 6 in the posterior maxilla fig. Jan 04, 2015 vered m, peleg o, taicher s, buchner a. Odontogenic keratocyst looks can be deceptive, causing endodontic misdiagnosis. Keratocystic odontogenic tumor are considered to be benign, even though they are locally aggressive and show high recurrence rates after conservative management. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Odontogenic keratocyst of the maxilla 2 the most striking feature is the cysts capacity for recurrence. May 02, 2016 pathology odontologia created using powtoon free sign up at create animated videos and animated presentations for fre. In case of unilocular lucencies dentigerous cyst, eruption cyst, coc, aot, unicystic ameloblastoma etc. Apr, 2016 odontogenic keratocyst or keratocystic odontogengic tumor. 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. 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. 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 circumscribed ddmfr oral and. Keratocystic odontogenic tumour kcota cyst to a tumour. Odontogenic cysts and tumors ppt linkedin slideshare. Treatment of these lesions with conservative techniques such as marsupialization and decompression have proven and lasting. Currently, this tumour is classified as a benign neoplasm of odontogenic origin and not as a cyst. A case report of odontogenic keratocyst in anterior mandibule.
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. Previously classified under developmental odontogenic cyst. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Keratocystic odontogenic tumour occurring in the anterior mandible. Ppt odontogenic cysts and tumors 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. Aug 07, 2016 odontogenic keratocyst enucleation by manish pandit, nilesh pagaria. Odontogenic keratocyst enucleation by manish pandit, nilesh pagaria. Keratocystic odontogenic tumour an overview sciencedirect. The odontogenic keratocyst is an important part in the clinical features of basal cell nevus syndrome or gorlin and goltz syndrome. Odontogenic keratocyst okc is the cyst arising from the cell rests of dental lamina. Whether these lesions are developmental or neoplastic is controversial, with the 2017 who classification placing it back into the development lesion category. 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. The high attenuation was considered to be due to highly concentrated protein of thick, viscous keratin in the lumen of the keratocyst.
Unusual ct appearance in an odontogenic keratocyst of the. Odontogenic keratocyst treatment with marsupialization and decompression. Pogrel, in current therapy in oral and maxillofacial surgery, 2012. An odontogenic keratocyst is a benign but locally aggressive developmental odontogenic cyst. Okcs have been reclassified under odontogenic tumours in 2005 by the who and have since been termed as keratocystic odontogenic tumours kcots. Odontogenic cyst are a group of jaw cysts that are formed from tissues involved in odontogenesis tooth development.
A case report of an unusual presentation of a keratocystic. Presentation of a keratocystic odontogenic tumor with. Present study is a case report of a 22 year old man presenting with a symptomatic swelling on the gingiva between. The odontogenic keratocyst okc was first described in 1876 1 and named by phillipsen in 1956. Keratocystic odontogenic tumour of lesions treated in our clinic. One manifestation of the basal cell nevus syndrome. A 14yearold caucasian girl presented for observation of bilateral. Treatment of these lesions with conservative techniques such as marsupialization and decompression have proven and lasting benefits. Ppt odontogenic keratocyst powerpoint presentation. Envelopmental this is an odontogenic keratocyst which embraces or envelopes an adjacent unerupted tooth.
Odontogenic cysts are closed sacs, and have a distinct membrane derived from rests of odontogenic epithelium. Odontogenic keratocysts make up around 19% of jaw cysts. Odontogenic keratocyst parakeratinized versus orthokeratinized. A case report of odontogenic keratocyst in anterior. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Here we report a case of a recurrent buccal lesion in a 62yearold. It can occur at any age but most develop during the second and third decade. An odontogenic keratocyst can develop at virtually any site in the jaws and is of concern because of its aggressive clinical behavior. Ameloblastoma tends to cause more resorption of teeth and expansion of bone first. When the cyst is multilocular and located at the molar ramus area, it may be. Orthokeratinized odontogenic cyst ooc is also a developmental cyst occurring in the tooth bearing regions of jaws and is defined by the world health organisation as the uncommon orthokeratinized type of odontogenic keratocyst okc. A large extragnathic keratocystic odontogenic tumour.
Orthokeratinized odontogenic keratocyst is a lessaggressive nonsyndromic variant of odontogenic keratocyst okc. A free powerpoint ppt presentation displayed as a flash slide show on id. Surgical treatment of odontogenic keratocyst by enucleation. 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.
Typical pathology proven case of odontogenic keratocyst which is a benign cystic lesion involving the mandible or maxilla. Odontogenic keratocysts okcs are developmental cysts which occur typically in the jawbones. This condition is often encountered in young patients. Radiographically, most okcs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst. Keratocystic odontogenic tumor grows along jaws first. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. A case series odontogenic cysts such as the odontogenic keratocyst are benign lesions that have the potential for aggressive infiltrative behavior and undesirable comorbidities.
It is usually located in the mandible posterior body and ramus region. An odontogenic keratocyst is a rare and benign but locally aggressive developmental cyst. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. The odontogenic keratocyst okc is the most important of the toothderived cysts. Involvement of soft tissues by odontogenic keratocyst primordial cyst. Appearance in an odontogenic keratocyst of the mandible. Whether these lesions are developmental or neoplastic is controversial, with the 2017 who classification placing. 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. The world health organization who has reclassified odontogenic keratocyst okc to keratocystic odontogenic tumour kcot in 2005. Winner of the standing ovation award for best powerpoint templates from presentations magazine.
The distinction between keratocystic odontogenic tumor and other. Odontogenic keratocyst marsupialization and decompression. 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. A keratocystic odontogenic tumor kot formerly known as an odontogenic keratocyst is a benign cystic tumor of dental origin that probably arises from primitive dental lamina, most commonly occurs in the posterior mandible, and almost certainly represents the lesion that used to be known as a primordial cyst. 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 definition of odontogenic keratocyst. 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. Treatment consisted of enucleation and curettage for 22 of the lesions, resection. Odontogenic keratocyst radiology reference article. This reflects the dearth of information concerning the behavior and management of odontogenic keratocyst.
A 14yearold caucasian girl presented for observation of bilateral agenesis. Odontogenic keratocyst okc is a developmental cyst of tooth origin with an aggressive behaviour including high recurrence rate. The designation keratocyst was used to describe any jaw cyst in which keratin was formed to a large extent. Odontogenic keratocyst okc is an odontogenic cyst and because of its ability in growth and creation tumoral lesions is placed in odontogenic tumor okt. Developmental odontogenic cysts flashcards quizlet. They present more commonly in the posterior mandible of young adults than the maxilla. The orthokeratinizing odontogenic cyst is considered an unrelated entity without risk of recurrence or aggressive growth or association with nevoid basal cell carcinoma syndrome. Odontogenic definition of odontogenic by the free dictionary. 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. Also known as the keratocystic odontic tumor, it is believed to be stemming from the dental lamina. Odontogenic keratocyst a case presentation purshotam nainani 1, anish gupta, pratibha kavle2, amit mathur3 abstract. Treatment consisted of enucleation and curettage for 22 of the lesions, resection for 2 and marsupialization for 3. Odontogenic cysts and tumors michael underbrink, md anna pou, md february, 2002 introduction variety of cysts and tumors uniquely derived from tissues of.
101 432 853 862 58 1333 1196 562 1466 719 978 1030 364 1481 1194 1485 124 1021 592 172 694 511 1353 1363 341 1395 675 411 1226 157 177 1485 1077 518 1038 519 150