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Imaging Science in Dentistry

Hak-Sun Kim, Wonae Lee, Jin-Woo Choi, Won-Jeong Han, Eun-Kyung Kim
Synovial chondromatosis is a rare metaplastic disease affecting the joints, including the temporomandibular joint (TMJ). Since its symptoms are similar to those of temporomandibular disorders, a careful differential diagnosis is essential. A 50-year-old male patient was referred with the chief complaint of pain and radiopaque masses around the left TMJ on panoramic radiography. Clinically, pre-auricular swelling and resting pain was found, without limitation of mouth opening. On cone-beam computed tomographic images, multiple calcified nodules adjacent to the TMJ and bone proliferation with sclerosis at the articular fossa and eminence were found...
June 2018: Imaging Science in Dentistry
Damla Torul, Ezgi Yuceer, Mahmut Sumer, Seda Gun
Aspergilloma of the maxillary sinus is considered rare in immunocompetent patients, but a considerable increase has recently been seen in the incidence of reported cases. Dental procedures involving the antral region are thought to predispose individuals to this form of aspergillosis. Because aspergilloma shares similar clinical features with other sinus pathologies, its diagnosis may be delayed. Thus, an early diagnosis confirmed by a histopathological examination plays a crucial role in the adequate management of aspergilloma...
June 2018: Imaging Science in Dentistry
Chang-Ki Min, Kwang-Joon Koh, Kyoung-A Kim
Cemento-osseous dysplasia (COD) is a benign fibro-osseous lesion of bone, in which normal bone is replaced by fibrous tissue, followed by calcification with osseous and cementum-like tissue. COD is classified into 3 categories according to its location: periapical, focal, and florid COD (FCOD). On radiography, FCOD appears radiolucent in its early stages. As it matures, radiopacities appear within the lesion, causing them to show a mixed appearance of radiolucency and radiopacity. Because FCOD is usually asymptomatic and grows in a self-limited manner, it does not require treatment...
June 2018: Imaging Science in Dentistry
Sang-Hoon Kang, Jung Hyun Chang
Radiopacity in the maxillary sinus can be observed in various conditions, such as in the presence of lesions in the maxillary sinus or as a sequela of maxillary sinus surgery. This report describes the case of a 57-year-old female patient who had no previous history of surgical treatment or traumatic injury of the nose or maxillary sinus. Both maxillary sinuses were indistinguishable on panoramic radiography and showed signs of radiopacity. Computed tomography images revealed that the maxillary sinuses were filled with bony tissue and exhibited signs of sinus mucosal thickening...
June 2018: Imaging Science in Dentistry
Leyla Berna Çağırankaya, Nursel Akkaya, Gökçen Akçiçek, Hatice Boyacıoğlu Doğru
Purpose: Detecting laryngeal cartilages (triticeous and thyroid cartilages) on panoramic radiographs is important because they may be confused with carotid artery calcifications in the bifurcation region, which are a risk factor for stroke. This study assessed the efficiency of panoramic radiography in the diagnosis of calcified laryngeal cartilages using cone-beam computed tomography (CBCT) as the reference standard. Materials and Methods: A total of 312 regions (142 bilateral, 10 left, 18 right) in 170 patients (140 males, 30 females) were examined...
June 2018: Imaging Science in Dentistry
Song Hee Oh, Ju Hee Kang, Yu-Kyeong Seo, Sae Rom Lee, Hwa-Young Choi, Yong-Suk Choi, Eui-Hwan Hwang
Purpose: This study was conducted to evaluate the accuracy of linear measurements of 3-dimensional (3D) images generated by cone-beam computed tomography (CBCT) and facial scanning systems, and to assess the effect of scanning parameters, such as CBCT exposure settings, on image quality. Materials and Methods: CBCT and facial scanning images of an anthropomorphic phantom showing 13 soft-tissue anatomical landmarks were used in the study. The distances between the anatomical landmarks on the phantom were measured to obtain a reference for evaluating the accuracy of the 3D facial soft-tissue images...
June 2018: Imaging Science in Dentistry
Lucía Barba, Ana Luisa Berrocal, Alejandro Hidalgo
Purpose: To analyze cone-beam computed tomography (CBCT) use, indications, and exposure parameters in San José, Costa Rica. Materials and Methods: A cross-sectional study was performed. All CBCT examinations over a period of 6 months at 2 radiological centers in San José, Costa Rica were evaluated. The examinations were performed with Veraview EPOC X550 and Veraviewepocs 3D R100 equipment. The patients' age and sex, clinical indication for CBCT, region of interest (ROI), repeat examinations, specialty of the referring dentist, field-of-view (FOV), tube voltage (kV), tube current (mA), and radiation dose (µGy) were evaluated...
June 2018: Imaging Science in Dentistry
Seo-Young An, Chang-Hyeon An, Karp-Sik Choi, Kyung-Hoe Huh, Won-Jin Yi, Min-Suk Heo, Sam-Sun Lee, Soon-Chul Choi
Purpose: This study evaluated the radiopacity of contemporary luting cements using conventional and digital radiography. Materials and Methods: Disc specimens (N=24, n=6 per group, ø7 mm×1 mm) were prepared using 4 resin-based luting cements (Duolink, Multilink N, Panavia F 2.0, and U-cem). The specimens were radiographed using films, a complementary metal oxide semiconductor (CMOS) sensor, and a photostimulable phosphor plate (PSP) with a 10-step aluminum step wedge (1 mm incremental steps) and a 1-mm-thick tooth cut...
June 2018: Imaging Science in Dentistry
Luciano Andrei Francio, Fernanda Evangelista Silva, Claudia Scigliano Valerio, Claudia Assunção E Alves Cardoso, Wellington Corrêa Jansen, Flávio Ricardo Manzi
Purpose: The present study aimed to evaluate which of the following imaging methods best assessed misfit at the tooth-restoration interface: (1) bitewing radiographs, both conventional and digital, performed using a photostimulable phosphor plate (PSP) and a charge-coupled device (CCD) system; (2) panoramic radiographs, both conventional and digital; and (3) cone-beam computed tomography (CBCT). Materials and Methods: Forty healthy human molars with class I cavities were selected and divided into 4 groups according to the restoration that was applied: composite resin, composite resin with liner material to simulate misfit, dental amalgam, and dental amalgam with liner material to simulate misfit...
June 2018: Imaging Science in Dentistry
Isabela Goulart Gil Choi, Arthur Rodriguez Gonzalez Cortes, Emiko Saito Arita, Marco Antonio Paupério Georgetti
Purpose: This study aimed to carry out a systematic review of studies in the literature comparing conventional imaging techniques with cone-beam computed tomography in terms of the role of these techniques for assessing any of the following periodontal conditions and parameters: infrabony defects, furcation involvement, height of the alveolar bone crest, and the periodontal ligament space. Materials and Methods: Interventional and observational studies comparing conventional imaging techniques with cone-beam computed tomography were considered eligible for inclusion...
June 2018: Imaging Science in Dentistry
Chena Lee, Jong In Yook, Sang-Sun Han
Organized hematoma is a pseudo-tumorous lesion mostly occurs at sinonasal cavity and often confused with malignant neoplasm. The initiation of this lesion is blood accumulation, probably due to trauma, and this hematoma develops into organized hematoma as it encapsulated with fibrous band and neo-vascularized. Since it is uninformed at temporomandibular joint (TMJ) region, imaging diagnosis might be challenging. Also, delayed detection of mass involving TMJ is not uncommon due to confusion with joint disorder...
March 2018: Imaging Science in Dentistry
Hassan M Khan, Andrew D Fraser, Steven Daws, Jaisri Thoppay, Mel Mupparapu
Historically, Eagle syndrome is a term that has been used to describe radiating pain in the orofacial region, foreign body sensation, and/or dysphagia due to a unilateral or bilateral elongated styloid process impinging upon the tonsillar region. Because elongated styloid processes-with or without associated Eagle syndrome-can present with various symptoms and radiographic findings, it can be challenging for healthcare practitioners to formulate an accurate diagnosis. Abnormal styloid anatomy can lead to a multitude of symptoms, including chronic orofacial/neck pain, thus masquerading as more commonly diagnosed conditions...
March 2018: Imaging Science in Dentistry
Song Hee Oh, Ju Hee Kang, Yu-Kyeong Seo, Sae Rom Lee, Yong-Suk Choi, Eui-Hwan Hwang
Osseointegrated implants are now commonplace in contemporary dentistry. However, a number of complications can occur around dental implants, including peri-implantitis, maxillary sinusitis, osteomyelitis, and neoplasms. There have been several reports of a malignant neoplasm occurring adjacent to a dental implant. In this report, we describe 2 such cases. One case was that of a 75-year-old man with no previous history of malignant disease who developed a solitary plasmacytoma around a dental implant in the left posterior mandible, and the other was that of a 43-year-old man who was diagnosed with squamous cell carcinoma adjacent to a dental implant in the right posterior mandible...
March 2018: Imaging Science in Dentistry
Piyoros Suteerapongpun, Tanapan Wattanachai, Apirum Janhom, Polbhat Tripuwabhrut, Dhirawat Jotikasthira
Purpose: To perform a comparative analysis of the palatal bone thickness in Thai patients exhibiting class I malocclusion according to whether they exhibited a normal or open vertical skeletal configuration using cone-beam computed tomography (CBCT). Materials and Methods: Thirty CBCT images of Thai orthodontic patients (15-30 years of age) exhibiting class I malocclusion with a normal or open vertical skeletal configuration were selected. Palatal bone thickness was measured in a 3...
March 2018: Imaging Science in Dentistry
Ichiro Ogura, Yoshihiko Sasaki, Mikiko Sue, Takaaki Oda
Purpose: The aim of this study was to evaluate the quantitative strain elastography of tongue carcinoma using intraoral ultrasonography. Materials and Methods: Two patients with squamous cell carcinoma (SCC) who underwent quantitative strain elastography for the diagnosis of tongue lesions using intraoral ultrasonography were included in this prospective study. Strain elastography was performed using a linear 14 MHz transducer (Aplio 300; Canon Medical Systems, Otawara, Japan)...
March 2018: Imaging Science in Dentistry
Polyane Mazucatto Queiroz, Gustavo Machado Santaella, Francisco Carlos Groppo, Deborah Queiroz Freitas
Purpose: To evaluate the effect of different numbers of basis images and the use of metal artifact reduction (MAR) on the production and reduction of artifacts in cone-beam computed tomography images. Materials and Methods: An acrylic resin phantom with a metal alloy sample was scanned, with 450 or 720 basis images and with or without MAR. Standard deviation values for the test areas (around the metal object) were obtained as a way of measuring artifact production...
March 2018: Imaging Science in Dentistry
Abbas Shokri, Leila Ramezani, Mohsen Bidgoli, Mahdi Akbarzadeh, Karim Ghazikhanlu-Sani, Hamed Fallahi-Sichani
Purpose: This study aimed to evaluate the effect of field-of-view (FOV) size on the gray values derived from conebeam computed tomography (CBCT) compared with the Hounsfield unit values from multidetector computed tomography (MDCT) scans as the gold standard. Materials and Methods: A radiographic phantom was designed with 4 acrylic cylinders. One cylinder was filled with distilled water, and the other 3 were filled with 3 types of bone substitute: namely, Nanobone, Cenobone, and Cerabone...
March 2018: Imaging Science in Dentistry
Eun-Kyung Kim, Won-Jeong Han, Jin-Woo Choi, Bulgan Battulga
Purpose: To calculate the effective doses of cone-beam computed tomography (CBCT) using personal computer-based Monte Carlo (PCXMC) software (Radiation and Nuclear Safety Authority, Helsinki, Finland) and to compare the calculated effective doses with those measured using thermoluminescent dosimeters (TLDs) and an anthropomorphic phantom. Materials and Methods: An Alphard VEGA CBCT scanner (Asahi Roentgen Ind. Co., Kyoto, Japan) with multiple fields of view (FOVs) was used for this study...
March 2018: Imaging Science in Dentistry
Abbas Shokri, Amir Eskandarloo, Marouf Norouzi, Jalal Poorolajal, Gelareh Majidi, Alireza Aliyaly
Purpose: This study compared the diagnostic accuracy of cone-beam computed tomography (CBCT) scans obtained with 2 CBCT systems with high- and low-resolution modes for the detection of root perforations in endodontically treated mandibular molars. Materials and Methods: The root canals of 72 mandibular molars were cleaned and shaped. Perforations measuring 0.2, 0.3, and 0.4 mm in diameter were created at the furcation area of 48 roots, simulating strip perforations, or on the external surfaces of 48 roots, simulating root perforations...
March 2018: Imaging Science in Dentistry
Ola Mohamed Rehan, Hoda Abdel Kader Saleh, Hala Ahmed Raffat, Noha Saleh Abu-Taleb
Purpose: To evaluate osseous changes of temporomandibular joint (TMJ) in patients with rheumatoid arthritis (RA) using cone-beam computed tomography (CBCT) and to correlate the imaging findings with the severity of TMJ dysfunction, clinical findings, and laboratory findings. Materials and Methods: This study consisted of 28 subjects, including 14 RA patients and 14 controls, who were scheduled to undergo CBCT imaging for the diagnosis of a complaint not related to or affecting the TMJ...
March 2018: Imaging Science in Dentistry
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