Objective: The aim of this study was to investigate the frequency of ponticulus posticus (PP) using cone beam computed tomography (CBCT) and to describe the radiologic characteristics of the detected cases.
Study Design: The presence and types of PP were investigated on 730 CBCT images.
Results: PP was found in 17.4% (127) of the 730 CBCT scans. Of these 127 patients, 79 (10.8%) had bilateral PP and 48 (6.6%) had unilateral PP. Male predominance was found with a prevalence of 19.5% (54 of 277) and female prevalence was 16.1% (73 of 453). The prevalence of PP increased with age; the highest prevalence of PP was seen in those who were 49 to 81 years of age.
Conclusions: This study shows that PP is not an uncommon anatomic variation and is a natural incidental finding on CBCT.
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http://dx.doi.org/10.1016/j.oooo.2014.09.014 | DOI Listing |
Zhong Nan Da Xue Xue Bao Yi Xue Ban
October 2024
Xiangya Stomatological Hospital and Xiangya School of Stomatology, Central South University; Hunan Engineering Research Center for Digital Intelligence and Personalized Medicine; Hunan 3D Printing Engineering Research Center of Oral Care, Changsha 410008.
Objectives: Maxillary transverse deficiency is a common malocclusion frequently observed in orthodontic clinics. Miniscrew-assisted rapid palatal expansion (MARPE) not only produces greater skeletal expansion but also offers advantages such as simple miniscrew implantation without flap elevation, enhanced patient comfort, and an expanded age range and indications for palatal expansion. However, the fixed connection between the expander and the miniscrews makes the expander difficult to remove, significantly hindering its clinical application.
View Article and Find Full Text PDFJ Stomatol Oral Maxillofac Surg
March 2025
BDS, MSc, Ph.D, associate professor, Department of Clinical Oral Health Sciences, College of Dental Medicine, QU Health, Qatar University, Doha, Qatar. Electronic address:
Introduction: This study aimed to assess the available evidence regarding the skeletal, dentoalveolar and soft tissue effects of different maxillary expansion appliances in cleft lip/palate patients.
Methods: We assessed the effects of different maxillary expansion appliances on skeletal structure and dentoalveolar and soft tissue in cleft lip/palate patients. We searched the PubMed, Science Direct, Web of Science, Cochrane, and LILACS databases through September 2024; that investigation was augmented by a manual search.
J Acoust Soc Am
March 2025
Shaanxi Key Laboratory of Ultrasonics, School of Physics & Information Technology, Shaanxi Normal University, Xi'an 710119, People's Republic of China.
The exact expressions of the three-dimension acoustic radiation torque (ART) of a viscoelastic sphere arbitrarily positioned in a zero-order Mathieu beam (zMB) are derived in this paper. The effects of the ellipticity parameters, half-cone angles, dimensionless frequency, and particle position on the acoustic radiation torques of the spherical particle are studied. Simulation results show the axial ART is zero for an arbitrarily positioned viscoelastic PE sphere in a zMB, while for the x or y axis ART, it varies significantly with the particle position and beam parameters.
View Article and Find Full Text PDFInt J Comput Assist Radiol Surg
March 2025
CAMP, Technical University of Munich, Munich, Germany.
Purpose: The multi-modality imaging system offers optimal fused images for safe and precise interventions in modern clinical practices, such as computed tomography-ultrasound (CT-US) guidance for needle insertion. However, the limited dexterity and mobility of current imaging devices hinder their integration into standardized workflows and the advancement toward fully autonomous intervention systems. In this paper, we present a novel clinical setup where robotic cone beam computed tomography (CBCT) and robotic US are pre-calibrated and dynamically co-registered, enabling new clinical applications.
View Article and Find Full Text PDFOral Radiol
March 2025
Faculty of Dentistry, Departmant of Oral and Maxillofacial Radiology, Akdeniz University, Konyaaltı, 07058, Antalya, Turkey.
Objective: The aim of this study was to evaluate the mandibular condyle and articular eminences of patients diagnosed with medication-related osteonecrosis of the jawbone (MRONJ) and those who use bisphosphonates (BP) but do not have MRONJ findings, by comparing them with a healthy control group.
Methods: The cone beam computed tomography (CBCT) images of 20 patients (15 male, 5 female) who were diagnosed with MRONJ and 20 patients (16 male and 4 female) who were using bisphosphonates but had no MRONJ were included in the study. A control group consisted of 20 age- and gender-matched patients (13 male, 7 female) who had no clinical complaints or signs and symptoms of TMD or rheumatic disease.
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