Panoramic Radiography in the Diagnosis of Carotid Artery Atheromas and the Associated Risk Factors

Atherosclerosis is a serious chronic disease, responsible for thousands of deaths worldwide and is characterized by thickening and loss of elasticity of the arterial walls, associated with the presence of atheromatous plaques. Various risk factors act directly on predisposition to the disease, among which the following are pointed out: diabetes mellitus, arterial hypertension and inadequate diet and eating habits. More recent researches have elucidated new risk factors acting in the development of this disease, such as, for example: periodontitis, chronic renal disease and menopause. The panoramic radiograph, commonly used in dental practice, makes it possible to see calcified atherosclerotic plaques that are eventually deposited in the carotid arteries. The aim of this review article was to emphasize the dentist’s important role in the detection of carotid artery atheromas in panoramic radiographs and the immediate referral of patients affected by these calcifications to doctors. In addition, the study intended to guide the dentist, especially the dental radiologist, with regard to differential diagnosis, which should be made taking into consideration particularly the triticeal cartilage when it is calcified

Influence of image filters on the reproducibility measurements of alveolar bone loss

The reproducibility of measurements of alveolar bone loss on radiographs may be a problem on epidemiologic studies, as they are based on comparisons of the diagnosis of various examiners. The aim of the present research paper was to assess the inter- and intra-examiner reproducibility of measurements of the interproximal alveolar bone loss on non-manipulated digital radiographs and after the application of image filters. Five Oral Radiologists measured the distance between the cementoenamel junction (CEJ) to the alveolar crest or to the deepest point of the bony defect on 12 interproximal digital radiographs of molars and bicuspids of a dry human skull. The digital manipulation and the linear measurements were obtained with the Trophy Windows software (Throphy®). For each image, six different versions were created: 1) non-manipulated; 2) bright-contrast adjustment; 3) negative; 4) negative with brightness-contrast adjustment; 5) pseudo-colored; 6) pseudo-colored with brightness-contrast adjustment. In order to prevent interpretation bias because of the repetition of measurements, the examiners measured the radiographs in a random sequence. The two-way ANOVA test at 5% level of significance to compare the means of readings of the same operator with each filter indicated p;0.05 for all filters. Based on the results, we concluded that linear measurements of interproximal alveolar bone loss on digital radiographs are highly reproducible among examiners. Nevertheless, the application of image filters significantly influenced the degree of intra-examiner reproducibility. Some filters even reduced the reproducibility of intra-examiner readings.A reprodutibilidade de medidas da perda óssea alveolar em radiografias pode se tornar um problema em levantamentos epidemiológicos, que são baseados em comparações de diagnóstico de vários observadores. O objetivo neste estudo foi avaliar a reprodutibilidade intra e inter-examinador de medidas da perda óssea interproximal, em radiografias digitais não manipuladas e após a aplicação de diferentes filtros de imagem. Cinco radiologistas avaliaram a distância da junção cemento-esmalte até a crista óssea alveolar ou ponto mais apical do defeito ósseo em 12 radiografias digitais interproximais da região de molares e pré-molares de crânio humano macerado. As manipulações digitais e as medidas lineares foram realizadas no programa de computador do sistema radiográfico (Throphy®). Para cada imagem foram criadas seis diferentes versões: 1) não manipulada digitalmente; 2) manipulada por ajuste de brilho e contraste; 3) negativo; 4) negativo com ajuste de brilho e contraste; 5) pseudo-colorida; 6) pseudo-colorida com ajuste de brilho e contraste. Para prevenir tendências da mesma leitura pela avaliação repetida das radiografias, determinou-se uma ordem para a interpretação das imagens. O teste ANOVA fator duplo sem repetição, com nível de significância de 5%, realizado para comparação das médias de um mesmo examinador nas diferentes versões de imagem revelou p;0,05. A análise dos resultados nos permite concluir que medidas lineares da perda óssea alveolar interproximal em radiografias digitais apresentam alto grau de reprodutibilidade inter-examinadores, entretanto a aplicação de filtros de imagem não influenciou significativamente no grau de reprodutibilidade dessas medidas. Ao contrário, certas ferramentas reduziram a reprodutibilidade das medidas intra-examinador

Classificação do forame mentoniano e sua correlação bilateral

The aim of this search was to verify the different position of the mental foramen in relation to the lower premolars and to correlate both sides although Tebo, Telford 18 (1950) classification. This classification has six different class positions that are since above long axis of the canine to the first lower molar. 104 panoramic radiography of adult dentate patient were selected. Just in 67 radiographs, the foramen was visible in both sides. Considering the total of the sample, in right side (R), the class III appeared in 65 cases or 73,03%, already the class IV appeared in 14 times or 15,73% and the class V in only 11,24%; the class I, II, VI didn’t show some cases. To the left side (L), the class III appeared in 58 cases (69,04%), the class V in 17 cases or 20,24%, the class IV had 8,34% or in seven cases, the class I and II just in one case (1,19%) and the class VI didn’t have none. After, comparing both sides, in 67 radiographs, use the Fisher statistical test, was possible verify (p = 0,003) that exist a correlation between R and L by utilized classification. The data obtained allowed conclude that in majority of the cases the mental foramen is situated medially to second lower premolar, necessarily between first and second premolars or in classification III.O objetivo nesta pesquisa foi verificar as diversas posições do forame mentoniano em relação aos pré-molares inferiores e correlacionar os lados direito (D) e esquerdo (E) conforme classificação de Tebo, Telford 18 (1950), a qual possui seis classes distintas de posição que vão desde abaixo do canino inferior ao primeiro molar inferior. Foram selecionadas 104 radiografias panorâmicas de pacientes dentados totais e adultos, sendo que 67 radiografias a presença do forame foi visível em ambos os lados. Considerando o total da amostra, no lado D, a classe III apareceu em 65 casos, ou seja, 73,03%, já a classe IV apareceu 14 vezes representando 15,73% e a classe V em apenas 11,24%; as classes I, II, VI não apresentaram casos. Para o lado E, a classe III apareceu em 58 casos (69,04%), a classe V em 17 casos, ou seja, 20,24%, a classe IV obteve 8,34% ou em sete casos, as classes I e II em apenas um caso cada (1,19%) e a classe VI não houve nenhum caso. Posteriormente, comparando os dados dos lados D e E das 67 radiografias, com o teste exato de Fisher, foi possível verificar (p = 0,003) que existe uma correlação positiva entre os lados pela classificação utilizada. Os dados obtidos permitiram concluir que na grande maioria dos casos, o forame mentoniano está situado mais anteriormente ao 2o pré-molar inferior, mais precisamente entre o 1º e 2º pré-molares, ou seja, pacientes com classificação III

EL USO DE SIALOGRAFÍA EN EL DIAGNÓSTICO Y TRATAMIENTO DE LA PAROTIDITIS RECURRENTE JUVENIL: PRESENTACIÓN DE UN CASO

La parotiditis recurrente juvenil (PRJ) es una enfermedad inflamatoria de la glándula parótida, generalmente se caracteriza por episodios recurrentes de hinchazón, dolor y fiebre. Después de la parotiditis epidémica, es la PRJ en los niños, la segunda enfermedad más frecuente de las glándulas salivales. La aparición de PRJ se produce alrededor de 6 años de edad y hay una ligera predilección por los varones. La etiología de la enfermedad sigue siendo poco clara y los síntomas tienden a desaparecer con la pubertad. Este estudio reporta el caso de un joven de 12 años que se presentó a la Facultad de Odontología de la Universidad Estadual Paulista, Sao José dos Campos, con una historia de episodios recurrentes de hinchazón de la glándula parótida izquierda asociada con dolor, fiebre y secreción purulenta en los primeros eventos. Terminada la anamnesia, se decidió por obtener sialografías de las dos glándulas parótidas con el uso de material de contraste Lipiodol UF 38% y radiografías panorámicas, seguidas por las evaluaciones morfológicas y funcionales. El paciente se encuentra hoy sin presentar recurrencia de la enfermedad y está bajo seguimiento clínico. ABSTRACT The Juvenile Recurrent Parotitis (JRP) is an inflammatory disease of the parotid gland, usually characterized by recurrent episodes of swelling, pain and fever. After mumps, the PRJ in children is the second most prevalent disease of salivary glands. The emergence of PRJ occurs around 6 years old and there is a slight predilection for males.The etiology of the disease remains unclear and the symptoms tend to disappear with puberty. This study reports the case of a twelve years old boy who presented to the Dentistry School of São Paulo State University - campus São José dos Campos- with a history of recurrent episodes of swelling of the left parotid gland associated with pain, fever and purulent discharge in the early events . Finished the anamnesis, sialography were performed with the use of Lipiodol UF 38% contrast material and panoramic radiographs on both parotid glands, followed by morphological and functional assessments. There was no recurrence of the disease and the patient is under follow-up

Odontogenic myxoma in an adolescentpatient – report of a clinical case

This paper presents a case of odontogenic myxoma affecting a black boy, 16 years old. In his case, the body and ascending ramus of his mandible, on his right cheek, had been affected by the tumour. The treatment applied was the partial resection of the mandible, in a way that its condyle was preserved. Two years later, the neoformation of the bone in the area of the resected mandible was observed clinically and radiographically

Assessment of divine proportion in the cranial structure of individuals with Angle Class II malocclusion on lateral cephalograms

INTRODUCTION: The study of the Divine Proportion (Φ = 1.618) began with the Greeks, having as main researchers the mathematician Pythagoras and the sculptor Phidias. In Dentistry, Ricketts (1981-82) was an early to study this issue. OBJECTIVE: This study proposed to evaluate how some cephalometric measures are presented in relation to the Divine Proportion, with the total of 52 proportions, formed by 28 cephalometric landmarks. METHODS: Lateral cephalograms of 40 Class II adults patients aging from 17 to 45 years (13 male and 27 female) were evaluated. The linear distances between the landmarks were measured using Radiocef Studio software. RESULTS: After statistical analysis, the data shown an average of 65,48% in the Divine Proportion, 17,5% in the relation Ans-Op/V1S-DM16 and 97,5% in the relations Na-Me/Na-PoNa e Na-PoNa/Na-Gn. CONCLUSION: Among all cephalometric measurements investigated, the lower facial third and the dental arches showed the smallest percentages of Divine Proportion

Skeletal age of individuals with Down syndrome

The aim of this study was to assess the skeletal age of Brazilian individuals with Down syndrome (DS) using the method of Greulich and Pyle. Forty subjects with DS between the ages of 6 and 16 years were studied and compared to a control sample of children without DS. The statistical analysis showed that at the age of 7 years the skeletal age (SA) of the individuals with DS was delayed in relation to their chronological age (CA) (SA CA). An evaluation of the results suggests that the period of adolescent development for individuals with DS was shorter. These individuals reach the completion of bone maturation earlier compared to individuals without DS. © 2008 Special Care Dentistry Association and Wiley Periodicals, Inc