Parameters in panoramic radiography for differentiation of radiolucent lesions

Abstract

Objective:The aims of this study were to establish parameters in panoramic radiography for interpretation of unilocular radiolucent lesions, and to compare the accuracy of diagnoses given by examiners before and after using these parameters.Material and Methods:In Part I, 12 specialists analyzed 24 images and the diagnostic criteria used by each examiner to make correct diagnoses were used to build a list of basic radiographic parameters for each pathology (ameloblastoma, keratocystic odontogenic tumor, dentigerous cyst, and idiopathic bone cavity). In Part II, this list was used by 6 undergraduate students (Un), 8 recently graduated dentists (D), 3 oral pathologists, 3 stomatologists, 3 oral radiologists, and 3 oral surgeons to diagnose the corresponding pathologies in the other set of 24 panoramic radiographs (T2). The same analysis occurred without using this list (T1). The method of generalized estimating equations (GEE) was used in order to estimate the probability of making a correct diagnosis depending on the specialty of the examiner, type of lesion, and moment of the evaluation, T1 or T2 (before or after they had access to the list of parameters, respectively).Results:Higher values were obtained for the probability (GEE) of making a correct diagnosis on T2; the group Un presented the highest improvement (14.6 %); no differences between the probabilities were observed either between Un and D, or among the different groups of specialists.Conclusions:The use of panoramic radiographic parameters did allow improving the diagnostic accuracy for all groups of examiners.

Frequency of odontogenic cysts and tumors: a systematic review

“…Odontogenic lesions can be divided discretely into cysts (an epithelial lined pathological cavity) and tumors (a solid tissue mass, not necessarily neoplastic) . Intrabony lesions of the jaws are identified most commonly on radiographic imaging frequently as an incidental finding …”

“…1 Intrabony lesions of the jaws are identified most commonly on radiographic imaging frequently as an incidental finding. 2 A radicular cyst is due to a long standing inflammatory process in the bone of the surrounding root apex with the proliferation of the epithelial rests of Malassez (residual epithelial cells in the periodontal ligament). 3 Dentigerous cysts are developmental in origin, with fluid expanding the dental follicle peri-coronally.…”

Una Aproximación Epidemiológica sobre Patologías Orales desde la Perspectiva de la Radiología

“…La prevalencia de lesiones compatibles con quistes, tumores o patología ósea es baja (5,8 %) y los casos se relacionan más con lesiones reactivas como la osteítis condensante, con muy pocos quistes odontogénicos, teniendo en cuenta solamente parámetros radiográficos (Raitz et al, 2009). En un estudio sobre 12.197 pacientes a lo largo de 20 años, se encontró una frecuencia de 1.310 lesiones en su gran mayoría quistes radiculares, dato similar al presente trabajo.…”

Tratamento Cirúrgico De Tumor Odontogênico Queratocístico : Relato De Caso

“…A respeito do aspecto radiográfico, essas lesões podem se apresentar sob um aspecto unilocular ou multilocular em razão do seu tamanho. Com isso, a maior parte exibe imagens radiolúcidas uniloculares bem definidas associadas à coroa de um elemento dental 5,9 , o que não foi observado no caso descrito 1,2 . O diagnóstico é de fundamental importância, pois norteia o tratamento e determina o prognóstico.…”