13. interpretaÃ§Ã£o radiogrÃ¡fica de lesÃµes nos maxilares por alunos ...

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P á g i n a | 9ABSTRACTThe aim of this study was to evaluate the interpretation of jaws lesions in thepanoramic radiographs, by graduation students of Dentistry, after the DentalRadiology course at UFPB. 32 students were part of the sample that was divided intotwo groups. Group I consisted of 8 students in the sixth and 8 students of the seventhperiods and group II, formed by 8 students of the ninth and 8 students in the tenthperiods. Each student evaluated 23 scanned images of panoramic radiographs,using LCD monitor, 17 , of which only 6 did not show any lesion, and the other 17presenting cases of radicular cyst, dentigerous cyst, Stafne cyst, periapical cymentaldysplasia, cystic ameloblastoma and odontogenic keratocystic tumour. Evaluatorsresponded to a questionnaire addressing the presence, location and diagnosis oflesions studied. Groups I and II presented rates of correct answers regarding thepresence or absence of lesion, sensitivity and specificity of 88.9%, 94% and 83%,and 91.6%, 91% e 81% respectively. For the location of the true-positiveassessments, group II (81.5%) had a higher percentage of correct answers that thegroup I (79.3%). There was lower rate of correct true-positive lesions in the anteriormaxilla. For the diagnosis of false-positive evaluations, the anterior mandible andradicular cysts were the most selected. Taking into account the percentage of correctdiagnosis as to the true-positive assessments correctly located, the rate of correctanswers was 51.1% in group I and 50.3% in group II. The periapical cementaldysplasia, the dentigerous cyst and the Stafne cyst were the lesions that had higherpercentages of correct answers, while the cystic ameloblastoma had the lowest. Itwas concluded that the students groups have good rates and similar levels in theinterpretation of panoramic radiographs. The anterior and posterior region ofmandible, are the most susceptible to false-positive diagnosis. Familiarities with thepathologies of maxillary help in preparation of a presumptive diagnosis by means ofX-rays, but can also influence the false-positive diagnosis. Knowledge ofradiographic anatomy and pathology is important for radiographic interpretation. Thepanoramic radiograph is an important tool in the preparation of the presumptivediagnosis, but should be used carefully, to display shadows and distortions that canmimic bone lesions.Keywords: Panoramic Radiography; Diagnostic Imaging; Radiographic ImageInterpretation Computer-Assisted; Digital Radiography.
P á g i n a | 10LISTA DE ILUSTRAÇÕESFigura 1Imagem radiográfica panorâmica de uma criança sem alteraçõespatológicas.................................................................................................................30Figura 2Imagem radiográfica panorâmica mostrando o tumor odontogênicoqueratocístico na mandíbula......................................................................................30Figura 3Representação da sensibilidade e especificidade do grupo I e II comrelação à sensibilidade e especificidade....................................................................34Figura 4Representação de todas as alterações mais assinaladas no diagnósticode falso-positivos........................................................................................................42
Page 1 and 2: P á g i n a | 0UNIVERSIDADE FEDERA
Page 3 and 4: P á g i n a | 2F725iFormiga Filho,
Page 5 and 6: P á g i n a | 4DEDICO este trabalh
Page 7 and 8: P á g i n a | 6À professora Maria
Page 9: P á g i n a | 8RESUMONesta pesquis
Page 13 and 14: P á g i n a | 12SUMÁRIO1. INTRODU
Page 15 and 16: P á g i n a | 141. INTRODUÇÃOA r
Page 17 and 18: P á g i n a | 16REVISÃO DE LITERA
Page 19 and 20: P á g i n a | 182.1. Ameloblastoma
Page 21 and 22: P á g i n a | 20talvez devido a po
Page 23 and 24: P á g i n a | 222.5. Cisto Radicul
Page 25 and 26: P á g i n a | 24sequência: ajuste
Page 27 and 28: P á g i n a | 26PROPOSIÇÃO
Page 29 and 30: P á g i n a | 28MATERIAL E MÉTODO
Page 31 and 32: P á g i n a | 304.1.2. Critérios
Page 33 and 34: P á g i n a | 32300 e 600 dpi são
Page 35 and 36: P á g i n a | 345. RESULTADOSEm ca
Page 37 and 38: P á g i n a | 36Tabela 3 Distribui
Page 39 and 40: P á g i n a | 38Tabela 4 Distribui
Page 41 and 42: P á g i n a | 40Na presença do ci
Page 43 and 44: P á g i n a | 42seguida do cisto r
Page 45 and 46: P á g i n a | 44Tabela 11 Distribu
Page 47 and 48: P á g i n a | 466. DISCUSSÃOO pre
Page 49 and 50: P á g i n a | 48et al., 1999). Por
Page 51 and 52: P á g i n a | 50CONCLUSÃO
Page 53 and 54: P á g i n a | 52REFERÊNCIAS
Page 55 and 56: P á g i n a | 54GATT, M. E.; SPECT
Page 57 and 58: P á g i n a | 56THEODOROU, D. J.;
Page 59 and 60: P á g i n a | 58APÊNDICEFORMULÁR
Page 61 and 62:
P á g i n a | 60Qual(is): ( ) Mars
Page 63 and 64:
P á g i n a | 62Qual(is): ( ) Mars
Page 65 and 66:
P á g i n a | 64ANEXO
Page 67 and 68:
P á g i n a | 66Anexo 2TERMO DE CO
Page 69:
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