Exposure Standards for Digital and Analogue Dry Skull Orthopantomography

Beaini, Thiago Leite; Dias, Paulo Eduardo Miamoto; Melani, Rodolfo Francisco Haltenhoff

doi:10.4172/2157-7145.1000115

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…A single examiner measured the gonial angle by angular measurement tool by determining from two tangents which is drawn from inferior border of the mandible and posterior borders of condyle (i.e.,) (angle between the ramus and corpus of the mandible ( x = ABC)) and height of the ramus is determined by two lines one from most cranial point of the condyle (Co) and the intersection point with the lower border of the ramus mandibulae(the gonial point [Go] Y = D + E), (another from most cranial point of the coronoid to the lower border of the ramus mandibiulae Z = F + E); width of the ramus determined by two lines, (for maximum width from below the sigmoid notch of outer border of condyle to inner coronoid border Wa1 = G + H), (for minimum width from lower border of condyle to external oblique line Wa2 = I + J) [ Figure 1 ]. [ 7 ]…”

Section: Methodsmentioning

confidence: 99%

“…An exposure of 63 Kv and 06 mA should be selected, and an automatic processing machine can be used for enhanced results. [ 7 ] This study was conducted to understand the alteration by measuring gonial angle, width of the ramus, height of condyle and coronoid and to correlate with various parameters of age and sex in dentition status and to drive at regression equation.…”

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Prediction of age and gender using digital radiographic method: A retrospective study

et al. 2015

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Aim and Objective:To investigate age, sex based on gonial angle, width and breadth of the ramus of the mandible by digital orthopantomograph.Materials and Methods:A total of 200 panoramic radiographic images were selected. The age of the individuals ranged between 4 and 75 years of both the gender - males (113) and females (87) and selected radiographic images were measured using KLONK image measurement software tool with linear, angular measurement. The investigated radiographs were collected from the records of SRM Dental College, Department of Oral Medicine and Radiology. Radiographs with any pathology, facial deformities, if no observation of mental foramen, congenital deformities, magnification, and distortion were excluded.Results:Mean, median, standard deviation, derived to check the first and third quartile, linear regression is used to check age and gender correlation with angle of mandible, height and width of the ramus of mandible.Conclusion:The radiographic method is a simpler and cost-effective method of age identification compared with histological and biochemical methods. Mandible is strongest facial bone after the skull, pelvic bone. It is validatory to predict age and gender by many previous studies. Radiographic and tomographic images have become an essential aid for human identification in forensic dentistry forensic dentists can choose the most appropriate one since the validity of age and gender estimation crucially depends on the method used and its proper application.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

Prediction of age and gender using digital radiographic method: A retrospective study

et al. 2015

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Dry skull positioning device for extra-oral radiology and cone-beam CT

2013

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Extra-oral radiographs of dry skulls on scientific or forensic context have head position as a critical procedure. The aims of this article are to present a multi-purposed head-positioning device, and to describe the new method of image acquirement using the device to adequately keep the head in a correct and safe position during radiological or tomographic exam. The design was created from an average-sized skull and then tested in 20 others with different morphologies, sizes, weights, and structural state of preservation. A series of digital and analog orthopantomographies followed by a cone-beam computer tomography were obtained to assure that the correct positioning standards and anatomical visualization were achievable. The developed device properly kept adult skulls in position for all extra-oral radiographic exams, providing to operators a secure and facilitated way to achieve the proper position standards. The device did not impair the visualization of the anatomical structures neither on radiographs nor in cone-beam computer tomography.

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Sexual Dimorphism of Mandibular Ramus in an Egyptian Sample: A Radiographic Study

El-Sherbiny¹,

El-Atta²

2019

The Medical Journal of Cairo University

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Background: Determination of the sex is an important step in the identification of skeletal remains especially in missing persons and mass disasters. Mandible, being a strong bone that is difficult to damage and disintegrate, is an important tool in sex determination. Aim of the Study: The present study aimed to evaluate accuracy of mandibular metric standards for estimating sexual dimorphism. Methods: The study was conducted on 90 males and 92 females of Egyptian sample. Orthopantomographs were taken for evaluating eleven mandibular metric parameters. Four models were adopted by the stepwise discriminant analysis test to define the best predictor of sex discrimination in the Egyptian population sample. Results: All parameters were found to be significantly different between both sexes; and the most dimorphic parameters were coronoid height, projective height, and mandibular canal length, followed by mandibular notch depth and condylar height. Meanwhile the least variables were gonial angle and bicondylar length. Conclusion: This study proves that mandibular measurements on digital radiograph are useful in sex determination.

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Exposure Standards for Digital and Analogue Dry Skull Orthopantomography

Cited by 3 publications

References 18 publications

Prediction of age and gender using digital radiographic method: A retrospective study

Prediction of age and gender using digital radiographic method: A retrospective study

Dry skull positioning device for extra-oral radiology and cone-beam CT

Sexual Dimorphism of Mandibular Ramus in an Egyptian Sample: A Radiographic Study

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