IN THE NAME OF GOD
Odontogenic cysts and tumors We will talk about Odontogenic cysts and tumors DR TORABI
DR TORABI
Dentigerous cyst Follicular cyst Most common 20% Seperation follicule from eround the crown Pathogenesis is uncertain Accumulation of fluid:reduced enamel epithelium and tooth crown DR TORABI
Clinical features Mandibular third molar> maxillary canine>maxillary third molars>mandibular second premolars 10 -30 years Male > Withes > blacks If infected: pain &swelling DR TORABI
DR TORABI
Radiographic features Unilocular radiolucent Well defined Radiolucency should be at least 3-4 mm DR TORABI
Cyst to crown relationship Central lateral circumfrential DR TORABI
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Histopathology Noninflamed Inflamed DR TORABI
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Treatment and prognosis Removal of the unerupted tooth Prognosis is excellent DR TORABI
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Eruption cyst Eruption hematoma Soft tissue analogue of dentigerous cyst DR TORABI
Clinical features Soft translucent swelling <10 years First permanent molars,maxillary incisors DR TORABI
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Histopathology DR TORABI
Treatment and prognosis no treatment DR TORABI
Odontogenic keratocyst Rest of dental lamina Growth may be not related to unknown factors 3-11 % of all odontogenic cyst DR TORABI
Clinical features Infancy to old age 60% in 10-40 years 60-80% in mandibule Small are asymtomatic Large :pain,swelling and drainage DR TORABI
DR TORABI
Radiographic features Well defined radilucent 25-40% with unerupted teeth Resorption is less common DR TORABI
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Histopathology DR TORABI
Treatment and prognosis Enucleation and curettage Recurrence 5-62% Recurrence >mandibule Prognosis is good DR TORABI
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Orthokeratinized odontogenic cyst 7-17% of all kerationcyst DR TORABI
Clinical features Young adults 2:1 male to female 2:1 mandibule to maxilla Posterior> Unilocular radiolucency 1-7 cm diameter DR TORABI
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Histpathology DR TORABI
Treatment and prognosis Enucleation &curettage DR TORABI
NEVOID BASAL CELL CARCINOMA SYNDROME Gorlin syn Mutation PTCH (patched),tumor suppressor gene Multiple basal cell carcinoma Odontogenic keratocyst Intra cranial calcification Rib and vertebral anomalies DR TORABI
Clinical features 1 Variability in expressivity of nevoid basal cell carcinoma syn Face:frontal & temproparietal bossing,eyes widely seperated,mild mandibular prognatism Basal cell carcinoma,second & third decades In nonexposed area Few to many hundreds DR TORABI
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Clinical features 2 Palmar & planter pits Ovarian fibromas Skeletal abnormalies:bifid ribs or splayed ribs Kyphoscoliosis Calcification falx cerebri DR TORABI
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DR TORABI
Jaw cysts Present in at least 75% patients Multiple Patient’s age is younger 1/3 solitary at initial presentation 1-20 years additional cyst developed DR TORABI
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Histopathology DR TORABI
Treatment & prognosis Prognosis depends on behavior of skin tumors Jaw cyst :enucleation DR TORABI
DR TORABI
Thanks for your attention DR TORABI