[ unicystic ameloblastoma with ameloblastic fibroma in wall [case report]]

Unicystic ameloblastoma is one type of ameloblastoma with different clinical, radiographic, pathologic and treatment response. The aim of this article is presenting a unicystic ameloblastoma with ameloblastic fibroma in its wall. A 16 year old boy with a painless expansion in the left side of mandible came into a maxillofacial surgery office. Radiographic views showed a unilocular lesion with involvement of mandibular border and root resorption. Aspiration was positive. Differential diagnosis consist of follicular cyst,odontogenic keratocyst and unicystic ameloblastoma. The lesion was removed with an exisional biopsy and curettage. This article reports a collision of unicystic ameloblastoma and ameloblastic fibroma. Treatment was based on exisional biopsy and curettage

[Gorlin cyst and clinicopathological aspects]

Gorlin cyst is an odontogenic lesion with different clinical behavior. There are different ideas about its nature as a cyst or tumor. The purpose of this study is evaluation of the frequency as well as clinical, pathological and radiographic aspects and also the related treatment. In a retrospective study, archive files of Dental Faculty of Babul from 2003-2009 were evaluated. The records of those patients with Gorlin cyst were excluded. After extraction of all the required information, they were recorded in SPSS, version 17. Frequencies of the mentioned cyst and also patients' recorded information were analyzed by Fisher exact test. From 443 patients with oral lesions; 20 cases were reported with Gorlin cyst [an average age of 28.4], 19 cases with central lesion and 16 cases with mandible lesion and 10 cases were found in male. According to the Radiographic reports; 14 cases were pericoronal radiolucency, 2 cases were periapical radiolucency and 2 cases were radiolucent radiopaque. Only one case was revealed with residual cyst. Various kinds of proliferative [1 case], non proliferative [11 cases], correlate with tumor [5 cases] and ameloblastomatous [3 cases] were observed pathologically. Treatment approaches differed from Enucleation [n=13] to Enucleation and currettage [n=5] to Marginal resection [n=2]. Gorlin cyst is less common among all the oral lesions. It was found that Gorlin cyst was more common in mandible in second half of the life and its frequency between male and female was the same. Central lesions were more common than peripheral. The most common radiographic, pathological and treatment aspects of Gorlin cyst sequentially consisted of pericoronal radiolucency, non proliferative and enucleation

Accuracy evaluation of panoramic radiography in detecting the position of third molar roots

Correct radiographic interpretation, especially for root morphology is a useful way to choose open or close surgery and to avoid root fracture during tooth extraction. Since, the third molar has the most irregular and unpredictable root position between all teeth, this study was performed to evaluate the accuracy of panoramic radiography in detecting the position of third molar roots. This cross-sectional and analytical study was performed on 38 patients [49 third molar teeth] who referred to Babol dental school during 2003-2005. Panoramic radiographs were taken from patients in the standard condition and two specialists of oral and maxillofacial radiology and surgery were asked to complete the questionnaire about radiographic interpretation of third molar before surgery. The questionnaire contained the number of tooth roots, relation between roots and relation between root angle and crown. After surgery tooth position was evaluated again. Presurgical and post-surgical radiographic findings were compared and then data were analyzed using paired t-test, X [2], Linear regression and Pearson correlation coefficient. In this study, the accuracy of interpretation of panoramic radiographs in evaluation of number of third molar roots and relation between roots [fused or non fused] was 64.3% and 63.3%, respectively. For the root angle to crown, the radiographic interpretation significantly estimated accurate angle [p<0.0001]. According to the results, panoramic radiography is a useful method for evaluation of the third molar position. Nevertheless, we must be aware of its high diagnostic error rate in evaluation of morphological details of root [number of roots and relation between roots]