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Imaging Science in Dentistry

Christine A Chen, Yoonhee Ahn, Scott Odell, Mel Mupparapu, David Mattew Graham
A static, unilateral, and focal bone depression located lingually within the ascending ramus, identical to the Stafne's bone cavity of the angle of the mandible, is being reported. During development of the mandible, submandibular gland inclusion may lead to the formation of a lingual concavity, which could contain fatty tissue, blood vessels, or soft tissue. However, similar occurrences in the ascending ramus at the level of the parotid gland are extremely rare. Similar cases were previously reported in dry, excavated mandibles, and 3 cases were reported in living patients...
September 2016: Imaging Science in Dentistry
Min-Ho Woo, Kyu-Ho Yoon, Kwan-Soo Park, Jae-An Park
Bifid mandibular condyle (BMC) is an uncommon morphological variant of the mandibular condyle. Although authors have proposed various etiologies for BMC, no consensus has emerged. In addition, varying findings have been reported regarding the epidemiological parameters of BMC (e.g., prevalence, gender ratio, and age), possibly due to its low incidence. BMC is occasionally associated with symptoms of the temporomandibular joint, such as ankylosis, pain, and trismus; however, it is difficult to detect this condition on conventional radiographs...
September 2016: Imaging Science in Dentistry
Aruna Ramesh, Rumpa Ganguly
PURPOSE: The use of electronic tools in teaching is growing rapidly in all fields, and there are many options to choose from. We present one such platform, Learning Catalytics™ (LC) (Pearson, New York, NY, USA), which we utilized in our oral and maxillofacial radiology course for second-year dental students. MATERIALS AND METHODS: The aim of our study was to assess the correlation between students' performance on course exams and self-assessment LC quizzes. The performance of 354 predoctoral dental students from 2 consecutive classes on the course exams and LC quizzes was assessed to identify correlations using the Spearman rank correlation test...
September 2016: Imaging Science in Dentistry
Jae-Myung Shin, Chena Lee, Jo-Eun Kim, Kyung-Hoe Huh, Won-Jin Yi, Min-Suk Heo, Soon-Chul Choi, Sam-Sun Lee
PURPOSE: The purpose of this study was to investigate appropriate contrast reference values (CRVs) by comparing the contrast in phantom and clinical images. MATERIALS AND METHODS: Phantom contrast was measured using two methods: (1) counting the number of visible pits of different depths in an aluminum plate, and (2) obtaining the contrast-to-noise ratio (CNR) for 5 tissue-equivalent materials (porcelain, aluminum, polytetrafluoroethylene [PTFE], polyoxymethylene [POM], and polymethylmethacrylate [PMMA])...
September 2016: Imaging Science in Dentistry
Imad Barngkgei, Esam Halboub, Abeer Abdulkareem Almashraqi, Razan Khattab, Iyad Al Haffar
PURPOSE: The goal of this study was to develop a new index as an objective reference for evaluating current and newly developed indices used for osteoporosis screening based on dental images. Its name; IDIOS, stands for Index of Dental-imaging Indices of Osteoporosis Screening. MATERIALS AND METHODS: A comprehensive PubMed search was conducted to retrieve studies on dental imaging-based indices for osteoporosis screening. The results of the eligible studies, along with other relevant criteria, were used to develop IDIOS, which has scores ranging from 0 (0%) to 15 (100%)...
September 2016: Imaging Science in Dentistry
Pedro Augusto Oliveira Santos Xambre, Claudia Scigliano Valerio, Claudia Assunção E Alves Cardoso, Antônio Luís Neto Custódio, Flávio Ricardo Manzi
PURPOSE: In the present study, we coined the term 'alveolar dome' and aimed to demonstrate the prevalence of alveolar domes through digital periapical radiographs. MATERIALS AND METHODS: This study examined 800 digital periapical radiographs in regard to the presence of alveolar domes. The periapical radiographs were acquired by a digital system using a photostimulable phosphor (PSP) plate. The χ(2) test, with a significance level of 5%, was used to compare the prevalence of alveolar domes in the maxillary posterior teeth and, considering the same teeth, to verify the difference in the prevalence of dome-shaped phenomena between the roots...
September 2016: Imaging Science in Dentistry
Minoru Sanda, Makoto Shiota, Chiharu Imakita, Aoi Sakuyama, Shohei Kasugai, Yasunori Sumi
PURPOSE: Optical coherence tomography (OCT) has been investigated as a novel diagnostic imaging tool. The utilisation of this equipment has been evaluated through several studies in the field of dentistry. The aim of this preliminary study was to determine through basic experiments the effectiveness of OCT in implant dentistry. MATERIALS AND METHODS: To assess detection ability, we captured OCT images of implants in each of the following situations: (1) implants covered with mucosae of various thicknesses that were harvested from the mandibles of pigs; (2) implants installed in the mandibles of pigs; and (3) implants with abutments and crowns fixed with temporary cement...
September 2016: Imaging Science in Dentistry
Reddy Lavanya, Dara Balaji Gandhi Babu, Sunandha Chavva, Mamatha Boringi, Shefali Waghray, Mounica Yeladandi
PURPOSE: Obstructive sleep apnea (OSA) is a common medical disorder with serious complications if untreated. Dentists play a vital role in the early diagnosis of this condition, thereby improving patients' prognoses. The purpose of this study was to identify patients with a high risk of OSA using simple cephalometric measurements in patients receiving routine dental care. MATERIALS AND METHODS: The present study was conducted on 206 patients divided into a high-risk group and a control group after answering the Berlin questionnaire...
September 2016: Imaging Science in Dentistry
Ana Caroline Ramos de Brito, Yuri Nejaim, Deborah Queiroz de Freitas, Christiano de Oliveira Santos
PURPOSE: The purpose of this study was to detect the anterior loop of the mental nerve and the mandibular incisive canal in panoramic radiographs (PAN) and cone-beam computed tomography (CBCT) images, as well as to determine the anterior/mesial extension of these structures in panoramic and cross-sectional reconstructions using PAN and CBCT images. MATERIALS AND METHODS: Images (both PAN and CBCT) from 90 patients were evaluated by 2 independent observers. Detection of the anterior loop and the incisive canal were compared between PAN and CBCT...
September 2016: Imaging Science in Dentistry
Hamed Mortazavi, Maryam Baharvand
This review article aimed to introduce a category of jaw lesions associated with impacted tooth. General search engines and specialized databases such as Google Scholar, PubMed, PubMed Central, MedLine Plus, Science Direct, Scopus, and well-recognized textbooks were used to find relevant studies using keywords such as "jaw lesion", "jaw disease", "impacted tooth", and "unerupted tooth". More than 250 articles were found, of which approximately 80 were broadly relevant to the topic. We ultimately included 47 articles that were closely related to the topic of interest...
September 2016: Imaging Science in Dentistry
Shekhar Bhatia, Shivani Kohli
No abstract text is available yet for this article.
June 2016: Imaging Science in Dentistry
Ali Z Syed, Samir Zahedpasha, Sonali A Rathore, Mel Mupparapu
The aim of this report is to present two cases of canalis basilaris medianus as identified on cone-beam computed tomography (CBCT) in the base of the skull. The CBCT data sets were sent for radiographic consultation. In both cases, multi-planar views revealed an osseous defect in the base of the skull in the clivus region, the sagittal view showed a unilateral, well-defined, non-corticated, track-like low-attenuation osseous defect in the clivus. The appearance of the defect was highly reminiscent of a fracture of the clivus...
June 2016: Imaging Science in Dentistry
Jae Hun Kim, Ho-Gul Jeong, Jae Joon Hwang, Jung-Hee Lee, Sang-Sun Han
PURPOSE: The aim of this study was to compare the coordinates of anatomical landmarks on cone-beam computed tomographic (CBCT) images in varied head positions before and after reorientation using image analysis software. MATERIALS AND METHODS: CBCT images were taken in a normal position and four varied head positions using a dry skull marked with 3 points where gutta percha was fixed. In each of the five radiographic images, reference points were set, 20 anatomical landmarks were identified, and each set of coordinates was calculated...
June 2016: Imaging Science in Dentistry
Mahrokh Imanimoghaddam, Azam Sadat Madani, Pirooze Mahdavi, Ali Bagherpour, Mansoreh Darijani, Hamed Ebrahimnejad
PURPOSE: This study was performed to compare the condylar position in patients with temporomandibular joint disorders (TMDs) and a normal group by using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: In the TMD group, 25 patients (5 men and 20 women) were randomly selected among the ones suffering from TMD according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). The control group consisted of 25 patients (8 men and 17 women) with normal temporomandibular joints (TMJs) who were referred to the radiology department in order to undergo CBCT scanning for implant treatment in the posterior maxilla...
June 2016: Imaging Science in Dentistry
Nattida Khumsarn, Virush Patanaporn, Apirum Janhom, Dhirawat Jotikasthira
PURPOSE: This study evaluated and compared interradicular distances and cortical bone thickness in Thai patients with Class I and Class II skeletal patterns, using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: Pretreatment CBCT images of 24 Thai orthodontic patients with Class I and Class II skeletal patterns were included in the study. Three measurements were chosen for investigation: the mesiodistal distance between the roots, the width of the buccolingual alveolar process, and buccal cortical bone thickness...
June 2016: Imaging Science in Dentistry
Aditya Tadinada, Elnaz Jalali, Wesam Al-Salman, Shantanu Jambhekar, Bina Katechia, Khalid Almas
PURPOSE: Sinus elevation procedures have become a routine and reliable way to gain bone volume in the edentulous maxilla for dental implant placement. Presence of bony septations and pathology in the maxillary sinus often cause complications leading to graft or implant failure or both. The aim of this study was to retrospectively evaluate the prevalence of pathology, direction of the septa, and sinus width measured at 2 mm, 5 mm, and 10 mm from the sinus floor in maxillary sinuses using cone-beam computed tomography (CBCT)...
June 2016: Imaging Science in Dentistry
Chena Lee, Sam-Sun Lee, Jo-Eun Kim, Khanthaly Symkhampha, Woo-Jin Lee, Kyung-Hoe Huh, Won-Jin Yi, Min-Suk Heo, Soon-Chul Choi, Heon-Young Yeom
PURPOSE: The current study investigates the feasibility of a platform for a nationwide dose monitoring system for dental radiography. The essential elements for an unerring system are also assessed. MATERIALS AND METHODS: An intraoral radiographic machine with 14 X-ray generators and five sensors, 45 panoramic radiographic machines, and 23 cone-beam computed tomography (CBCT) models used in Korean dental clinics were surveyed to investigate the type of dose report...
June 2016: Imaging Science in Dentistry
Rumpa Ganguly, Aruna Ramesh, Sarah Pagni
PURPOSE: The objective of this study was to investigate the effect of varying resolutions of cone-beam computed tomography images on the accuracy of linear measurements of edentulous areas in human cadaver heads. Intact cadaver heads were used to simulate a clinical situation. MATERIALS AND METHODS: Fiduciary markers were placed in the edentulous areas of 4 intact embalmed cadaver heads. The heads were scanned with two different CBCT units using a large field of view (13 cm×16 cm) and small field of view (5 cm×8 cm) at varying voxel sizes (0...
June 2016: Imaging Science in Dentistry
Jun Ho Kim, Eduardo Massaharu Aoki, Arthur Rodriguez Gonzalez Cortes, Reinaldo Abdala-Júnior, Junichi Asaumi, Emiko Saito Arita
PURPOSE: The aim of this study was to assess and compare the diagnostic performance of panoramic and occlusal radiographs in detecting submandibular sialoliths. MATERIALS AND METHODS: A total of 40 patients (20 cases and 20 controls) were included in this retrospective study. Cases were defined as subjects with a submandibular sialolith confirmed by computed tomography (CT), whereas controls did not have any submandibular calcifications. Three observers with different expertise levels assessed panoramic and occlusal radiographs of all subjects for the presence of sialoliths...
June 2016: Imaging Science in Dentistry
Sang-Hoon Kang, Yeon-Ho Kim, Yu-Jin Won, Moon-Key Kim
PURPOSE: To analyze the relative position of the mandibular foramina (MnFs) in patients diagnosed with skeletal class III malocclusion. MATERIALS AND METHODS: Computed tomography (CT) images were collected from 85 patients. The vertical lengths of each anatomic point from the five horizontal planes passing through the MnF were measured at the coronoid process, sigmoid notch, condyle, and the gonion. The distance from the anterior ramus point to the posterior ramus point on the five horizontal planes was designated the anteroposterior horizontal distance of the ramus for each plane...
June 2016: Imaging Science in Dentistry
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