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Imaging Science in Dentistry

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https://www.readbyqxmd.com/read/28989905/digital-subtraction-radiography-in-tmj-imaging-a-critique
#1
COMMENT
Galal Omami
No abstract text is available yet for this article.
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989904/central-giant-cell-lesion-of-the-mandible-in-a-2-year-old-girl
#2
Takaaki Oda, Mikiko Sue, Yasuo Okada, Yoriaki Kanri, Junya Ono, Ichiro Ogura
Central giant cell lesions are rare, benign, osteolytic, pseudocystic, solitary, localized lesions that are common in the skeletal structure, but less so in the maxillofacial region. Furthermore, to perform panoramic radiography and cone-beam computed tomography, it is necessary to prepare patients properly and to position their heads carefully. However, this can be difficult in pediatric patients, who may be anxious. In this report, we describe the case of a central giant cell lesion of the mandible in a 2-year-old girl that was evaluated with multidetector computed tomography...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989903/optimizing-the-reconstruction-filter-in-cone-beam-ct-to-improve-periodontal-ligament-space-visualization-an-in-vitro-study
#3
Yuuki Houno, Toshimitsu Hishikawa, Ken-Ichi Gotoh, Munetaka Naitoh, Akio Mitani, Toshihide Noguchi, Eiichiro Ariji, Yoshie Kodera
PURPOSE: Evaluation of alveolar bone is important in the diagnosis of dental diseases. The periodontal ligament space is difficult to clearly depict in cone-beam computed tomography images because the reconstruction filter conditions during image processing cause image blurring, resulting in decreased spatial resolution. We examined different reconstruction filters to assess their ability to improve spatial resolution and allow for a clearer visualization of the periodontal ligament space...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989902/quantitative-assessment-of-image-artifacts-from-root-filling-materials-on-cbct-scans-made-using-several-exposure-parameters
#4
Katharina Alves Rabelo, Yuri Wanderley Cavalcanti, Martina Gerlane de Oliveira Pinto, Saulo Leonardo Sousa Melo, Paulo Sérgio Flores Campos, Luciana Soares de Andrade Freitas Oliveira, Daniela Pita de Melo
PURPOSE: To quantify artifacts from different root filling materials in cone-beam computed tomography (CBCT) images acquired using different exposure parameters. MATERIALS AND METHODS: Fifteen single-rooted teeth were scanned using 8 different exposure protocols with 3 different filling materials and once without filling material as a control group. Artifact quantification was performed by a trained observer who made measurements in the central axial slice of all acquired images in a fixed region of interest using ImageJ...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989901/analysis-of-the-root-position-of-the-maxillary-incisors-in-the-alveolar-bone-using-cone-beam-computed-tomography
#5
Yun-Hoa Jung, Bong-Hae Cho, Jae Joon Hwang
PURPOSE: The purpose of this study was to measure the buccal bone thickness and angulation of the maxillary incisors and to analyze the correlation between these parameters and the root position in the alveolar bone using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: CBCT images of 398 maxillary central and lateral incisors from 199 patients were retrospectively reviewed. The root position in the alveolar bone was classified as buccal, middle, or palatal, and the buccal type was further classified into subtypes I, II, and III...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989900/prevalence-of-pineal-gland-calcification-as-an-incidental-finding-in-patients-referred-for-implant-dental-therapy
#6
Sunil Mutalik, Aditya Tadinada
PURPOSE: Pineal gland calcification has been proposed to play a role in the pathogenesis of Alzheimer disease. This study evaluated the prevalence and extent of pineal gland calcification in cone-beam computed tomography (CBCT) scans of patients referred for dental implant therapy who could possibly be a vulnerable group for this condition. MATERIALS AND METHODS: A retrospective evaluation of 500 CBCT scans was conducted. Scans that showed the area where the pineal gland was located were included...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989899/volumetric-accuracy-of-cone-beam-computed-tomography
#7
Cheol-Woo Park, Jin-Ho Kim, Yu-Kyeong Seo, Sae-Rom Lee, Ju-Hee Kang, Song-Hee Oh, Gyu-Tae Kim, Yong-Suk Choi, Eui-Hwan Hwang
PURPOSE: This study was performed to investigate the influence of object shape and distance from the center of the image on the volumetric accuracy of cone-beam computed tomography (CBCT) scans, according to different parameters of tube voltage and current. MATERIALS AND METHODS: Four geometric objects (cylinder, cube, pyramid, and hexagon) with predefined dimensions were fabricated. The objects consisted of Teflon-perfluoroalkoxy embedded in a hydrocolloid matrix (Dupli-Coe-Loid TM; GC America Inc...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989898/distances-from-the-root-apices-of-posterior-teeth-to-the-maxillary-sinus-and-mandibular-canal-in-patients-with-skeletal-open-bite-a-cone-beam-computed-tomography-study
#8
Werinpimol Kosumarl, Virush Patanaporn, Dhirawat Jotikasthira, Apirum Janhom
PURPOSE: This study determined and compared the distances from the maxillary root apices of posterior teeth to the floor of the maxillary sinus, or maxillary sinus distances (MSDs), and the distances from the mandibular root apices of the posterior teeth to the mandibular canal, or mandibular canal distances (MCDs), in Thai subjects with skeletal open bite and skeletal normal bite. MATERIALS AND METHODS: Pretreatment cone-beam computed tomography (CBCT) images were obtained from 30 Thai orthodontic patients (15 patients with skeletal normal bite and 15 with skeletal open bite) whose ages ranged from 14 to 28 years...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989897/three-dimensional-analysis-of-impacted-maxillary-third-molars-a-cone-beam-computed-tomographic-study-of-the-position-and-depth-of-impaction
#9
Priscila Ferreira de Andrade, Jesca Neftali Nogueira Silva, Bruno Salles Sotto-Maior, Cleide Gisele Ribeiro, Karina Lopes Devito, Neuza Maria Souza Picorelli Assis
PURPOSE: The classification of impacted maxillary third molars (IMTMs) facilitates interdisciplinary communication and helps estimate the degree of surgical difficulty. Thus, this study aimed to develop a 3-dimensional classification of the position and depth of impaction of IMTMs and to estimate their prevalence with respect to gender and age. MATERIALS AND METHODS: This cross-sectional retrospective study analyzed images in sagittal and coronal cone-beam computed tomography (CBCT) sections of 300 maxillary third molars...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28989896/diagnostic-efficacy-of-a-modified-low-dose-acquisition-protocol-for-the-preoperative-evaluation-of-mini-implant-sites
#10
Aditya Tadinada, Alana Marczak, Sumit Yadav
PURPOSE: The objective of this study was to compare the outcomes of surgical mini-implant placement when potential mini-implant sites were scanned using a lower-dose 180° acquisition protocol versus a conventional 360° acquisition protocol. MATERIALS AND METHODS: Ten dentate human skulls were used to provide sites for potential mini-implant placement. The sites were randomly divided into 2 groups: 360° and 180° cone-beam computed tomography (CBCT) acquisition protocols...
September 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680851/squamous-cell-carcinoma-arising-within-a-maxillary-odontogenic-keratocyst-a-rare-occurrence
#11
Elnaz Jalali, Elie M Ferneini, Kandasamy Rengasamy, Aditya Tadinada
Squamous cell carcinoma (SCC) arising within the lining of an odontogenic keratocyst (OKC) is a rare occurrence. Although potentially locally destructive, OKC is a benign odontogenic process that typically presents with clinical and radiographic features characteristic of a benign intraosseous neoplasm. We present the clinical and radiographic features of a maxillary mass that demonstrated SCC arising from the lining of an OKC. Although the initial clinical and radiographic presentation suggested an infection or malignant neoplasm, biopsies revealed an infiltrative well-differentiated SCC contiguous with and arising from the focus of a pre-existing OKC...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680850/dentinogenesis-imperfecta-type-ii-a-case-report-with-17-years-of-follow-up
#12
Francisco José Reis Gama, Isabella Sousa Corrêa, Claudia Scigliano Valerio, Emanuelle de Fátima Ferreira, Flávio Ricardo Manzi
Dentinogenesis imperfecta is a dominant autosomal hereditary disorder of dentin formation that affects the deciduous and permanent teeth. Its etiology is characterized by inadequate cell differentiation during odontogenesis. The clinical characteristics of dentinogenesis imperfecta are discolored teeth with a translucency that varies from gray to brown or amber. Radiographically, the teeth exhibit pulp obliteration, thin and short roots, bell-shaped crowns, and periapical bone rarefaction. The aim of this report was to present a case of dentinogenesis imperfecta type II that was followed up over a 17-year period...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680849/therapeutic-effect-of-intraductal-irrigation-of-the-salivary-gland-a-technical-report
#13
Chena Lee, Jo-Eun Kim, Kyoung-Hoe Huh, Won-Jin Yi, Min-Suk Heo, Sam-Sun Lee, Soon-Chul Choi
PURPOSE: Obstructive and inflammatory disease often occurs in the major salivary glands, and no predictive treatment has yet been developed for this condition. The aim of this report was to introduce an intraductal irrigation procedure and to illustrate its application to practical patient cases. MATERIALS AND METHODS: Two patients complaining of pain and swelling in the parotid gland during meals who underwent sialography were diagnosed as having sialodochitis with sialadenitis...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680848/comparison-of-2-root-surface-area-measurement-methods-3-dimensional-laser-scanning-and-cone-beam-computed-tomography
#14
Jintana Tasanapanont, Janya Apisariyakul, Tanapan Wattanachai, Patiyut Sriwilas, Marit Midtbø, Dhirawat Jotikasthira
PURPOSE: The aim of this study was to compare the use of 3-dimensional (3D) laser scanning and cone-beam computed tomography (CBCT) as methods of root surface measurement. MATERIALS AND METHODS: Thirty teeth (15 maxillary first premolars and 15 mandibular first premolars) from 8 patients who required extractions for orthodontic treatment were selected. Before extraction, pre-treatment CBCT images of all the patients were recorded. First, a CBCT image was imported into simulation software (Mimics version 15...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680847/effects-of-various-cone-beam-computed-tomography-settings-on-the-detection-of-recurrent-caries-under-restorations-in-extracted-primary-teeth
#15
Kıvanç Kamburoğlu, Gül Sönmez, Zeynep Serap Berktaş, Hakan Kurt, Doĝukan Özen
PURPOSE: The aim of this study was to assess the ex vivo diagnostic ability of 9 different cone-beam computed tomography (CBCT) settings in the detection of recurrent caries under amalgam restorations in primary teeth. MATERIALS AND METHODS: Fifty-two primary teeth were used. Twenty-six teeth had dentine caries and 26 teeth did not have dentine caries. Black class II cavities were prepared and restored with amalgam. In the 26 carious teeth, recurrent caries were left under restorations...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680846/effectiveness-of-digital-subtraction-radiography-in-detecting-artificially-created-osteophytes-and-erosions-in-the-temporomandibular-joint
#16
Husniye Demirturk Kocasarac, Peruze Celenk
PURPOSE: Erosions and osteophytes are radiographic characteristics that are found in different stages of temporomandibular joint (TMJ) osteoarthritis. This study assessed the effectiveness of digital subtraction radiography (DSR) in diagnosing simulated osteophytes and erosions in the TMJ. MATERIALS AND METHODS: Five intact, dry human skulls were used to assess the effectiveness of DSR in detecting osteophytes. Four cortical bone chips of varying thicknesses (0...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680845/dilemma-of-gonial-angle-measurement-panoramic-radiograph-or-lateral-cephalogram
#17
Pillai Devu Radhakrishnan, Nilambur Kovilakam Sapna Varma, Vallikat Velath Ajith
PURPOSE: The purpose of this study was to evaluate the accuracy of panoramic imaging in measuring the right and left gonial angles by comparing the measured angles with the angles determined using a lateral cephalogram of adult patients with class I malocclusion. MATERIALS AND METHODS: The gonial angles of 50 class I malocclusion patients (25 males and 25 females; mean age: 23 years) were measured using both a lateral cephalogram and a panoramic radiograph. In the lateral cephalograms, the gonial angle was measured at the point of intersection of the ramus plane and the mandibular plane...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680844/is-the-panoramic-mandibular-index-useful-for-bone-quality-evaluation
#18
Ah-Young Kwon, Kyung-Hoe Huh, Won-Jin Yi, Sam-Sun Lee, Soon-Chul Choi, Min-Suk Heo
PURPOSE: The aim of this study was to determine whether the panoramic mandibular index (PMI) is useful for assessing bone mineral density. We also analyzed the potential correlations between PMI parameters and patient age. MATERIALS AND METHODS: Four observers measured the PMI of both sides of the mental foramen using a picture archiving and communication system and images in the Digital Imaging and Communications in Medicine format. They studied 300 panoramic radiographic images of patients belonging to the following age groups: 40-49 years, 50-59 years, 60-69 years, 70-79 years, and 80-89 years...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680843/application-of-a-newly-developed-software-program-for-image-quality-assessment-in-cone-beam-computed-tomography
#19
Marcus Vinicius Linhares de Oliveira, António Carvalho Santos, Graciano Paulo, Paulo Sergio Flores Campos, Joana Santos
PURPOSE: The purpose of this study was to apply a newly developed free software program, at low cost and with minimal time, to evaluate the quality of dental and maxillofacial cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS: A polymethyl methacrylate (PMMA) phantom, CQP-IFBA, was scanned in 3 CBCT units with 7 protocols. A macro program was developed, using the free software ImageJ, to automatically evaluate the image quality parameters. The image quality evaluation was based on 8 parameters: uniformity, the signal-to-noise ratio (SNR), noise, the contrast-to-noise ratio (CNR), spatial resolution, the artifact index, geometric accuracy, and low-contrast resolution...
June 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28680842/evaluation-of-the-morphology-of-the-canalis-sinuosus-using-cone-beam-computed-tomography-in-patients-with-maxillary-impacted-canines
#20
Gokhan Gurler, Cagri Delilbasi, Emine Esen Ogut, Kader Aydin, Ufuk Sakul
PURPOSE: The nasopalatine canal is a well-known, important anatomical structure in the anterior maxilla, but this region contains many accessory canals. The canalis sinuosus (CS) is one of these canals; it contains the anterior superior alveolar nerve, along with veins and arteries. The purpose of this study was to evaluate the CS using conebeam computed tomography (CBCT) in patients with maxillary impacted canines. MATERIALS AND METHODS: A total of 111 patients admitted to the Istanbul Medipol University School of Dentistry for the exposure, orthodontic treatment, and/or extraction of an impacted canine were included in this study...
June 2017: Imaging Science in Dentistry
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