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https://www.readbyqxmd.com/read/29028853/impact-of-sex-age-and-season-on-sinus-membrane-thickness
#1
Nouf Zimmo, Angel Insua, Khaled Sinjab, Hsun-Liang Chan, Lujain Shaikh, Hom-Lay Wang
PURPOSE: Sinus membrane thickness has been associated with the incidence of membrane perforation during the sinus elevation procedure. Understanding the sinus membrane thickness is essential for prevention of this specific surgical complication. Therefore, the aim of this retrospective study was to investigate the impact of sex, age, and season on the membrane thickness. MATERIALS AND METHODS: The charts of 144 healthy patients were included in the study. Cone beam computed tomography (CBCT) images from these patients were analyzed to determine the sinus membrane thickness in the coronal and sagittal views...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028848/the-stability-of-augmented-bone-between-two-different-membranes-used-for-guided-bone-regeneration-simultaneous-with-dental-implant-placement-in-the-esthetic-zone
#2
Sirida Arunjaroensuk, Soontra Panmekiate, Atiphan Pimkhaokham
PURPOSE: This randomized controlled clinical trial compared the stability of augmented bone between a synthetic resorbable membrane and a collagen resorbable membrane with guided bone regeneration (GBR) simultaneous with dental implant placement in the esthetic zone in terms of facial bone thickness. MATERIALS AND METHODS: A total of 60 dental implants from patients requiring implant placement with simultaneous GBR in the esthetic zone were equally allocated to the test group or control group by block randomization...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028153/tailored-intraoperative-localization-of-non-palpable-pulmonary-lesions-for-thoracoscopic-wedge-resection-using-hybrid-room-technology
#3
Alessia Stanzi, Federico Mazza, Francesco Lucio, Donatella Ghirardo, Maurizio Grosso, Alessandro Locatelli, Giulio Melloni
INTRODUCTION: VATS wedge resection can require conversion to thoracotomy when pulmonary lesions cannot be identified. Hybrid operating rooms (HOR) provide real-time image acquisition capabilities allowing the intraoperative placement of markers, to facilitate the removal of non-palpable nodules during VATS. OBJECTIVES: To present our workflow based on the alternative use of two different markers according to the location of the lung lesion, and report our initial results...
October 13, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29026703/endodontic-management-of-a-maxillary-first-molar-with-seven-root-canal-systems-evaluated-using-cone-beam-computed-tomography-scanning
#4
Vijay Reddy Venumuddala, Sridhar Moturi, S V Satish, B Kalyan Chakravarthy, Sudhakar Malapati
Permanent maxillary first molar morphology has been studied widely. Usually, it has three roots with three canals and the frequent deviation being incidence of a second mesiobuccal canal, thus showing a multifaceted root canal anatomy. Other variations comprise four and five roots and abnormal root canal morphology within individual roots. Many case reports with five and six root canals or a C-shaped canal configuration have been reported in the past. This varying number of root canals poses a challenge for endodontist in detecting and treating by root canal treatment...
September 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29026681/resolving-adjacent-nanophosphors-of-different-concentrations-by-excitation-based-cone-beam-x-ray-luminescence-tomography
#5
Peng Gao, Huangsheng Pu, Junyan Rong, Wenli Zhang, Tianshuai Liu, Wenlei Liu, Yuanke Zhang, Hongbing Lu
Cone-beam X-ray luminescence computed tomography (CB-XLCT) has been proposed as a new molecular imaging modality recently. It can obtain both anatomical and functional tomographic images of an object efficiently, with the excitation of nanophosphors in vivo or in vitro by cone-beam X-rays. However, the ill-posedness of the CB-XLCT inverse problem degrades the image quality and makes it difficult to resolve adjacent luminescent targets with different concentrations, which is essential in the monitoring of nanoparticle metabolism and drug delivery...
September 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29023609/thickness-of-the-buccal-plate-in-posterior-teeth-a-prospective-cone-beam-computed-tomography-study
#6
Kayleigh Eaves Temple, John Schoolfield, Marcel E Noujeim, Guy Huynh-Ba, David J Lasho, Brian L Mealey
Buccal plate thickness is an important clinical parameter for postextraction implant treatment planning. The purpose of this study was to assess buccal plate thickness of the posterior maxilla and mandible using cone beam computed tomography (CBCT). A total of 265 patients and 934 teeth met the inclusion criteria for this study. CBCT volumes were taken and aligned for measurement at the ideal midsagittal cross-section. Buccal plate thickness was measured at 1, 3, and 5 mm apical to the alveolar crest. The frequency of thick (≥ 1 mm), thin (< 1 mm), and radiographic absence of the buccal plate were determined...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023607/immediate-palatal-molar-implants-a-simple-safe-minimally-invasive-technique
#7
Piotr Wychowański, Jarosław Woliński, Marcin Kacprzak, Witold Tomkiewicz, Iwańczyk Bartłomiej, Dorota Szubińska-Lelonkiewicz, Andrzej Wojtowicz, Myron Nevins
The purpose of this study was to determine whether a single immediate implant placed into the postextraction palatal socket of a maxillary molar would be as efficacious as a single implant placed centrally in a staged approach. A total of 61 immediate implants were placed in 52 patients and restored after 6 months. Periotest and Osstell were used to determine implant stability, and cone beam computed tomography was used for marginal bone level assessment. During the 2-year follow-up, implant survival was 100%...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023297/evaluation-of-sinonasal-change-after-lefort-i-osteotomy-using-cone-beam-computed-tomography-images
#8
Seung Woo Baeg, Yun Pyo Hong, Dong Hyun Cho, Jeong Keun Lee, Seung Il Song
Orthognathic surgery including Le Fort I osteotomy involves changes in the nasal septum and maxillary sinus. This study assesses nasal septum changes after Le Fort I osteotomy using cone beam computed tomography images and evaluates mucosal changes in the maxillary sinus after the surgery.This was a retrospective study of 33 patients who underwent orthognathic surgery including Le Fort I osteotomy. To assess the maxillary sinus, changes in the mucosa of the maxillary sinus were analyzed by volume and geometry...
October 11, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29020057/high-dose-teriparatide-rpth1-34-therapy-increases-callus-volume-and-enhances-radiographic-healing-at-8-weeks-in-a-massive-canine-femoral-allograft-model
#9
Kohei Nishitani, Zachary Mietus, Christopher A Beck, Hiromu Ito, Shuichi Matsuda, Hani A Awad, Nicole Ehrhart, Edward M Schwarz
Small animal studies have demonstrated significant high-dose recombinant parathyroid hormone1-34 (rPTH1-34) effects on intercalary allograft healing. Towards a human adjuvant therapy to decrease non-unions, we evaluated rPTH1-34 safety and efficacy in a clinically relevant canine femoral allograft model. Adult female mongrel hounds (n = 20) received a 5cm mid-diaphyseal osteotomy reconstructed with a plated allograft, and were randomized to: 1) Placebo (n = 5; daily saline), 2) Continuous rPTH1-34 (n = 7; 5 μg/kg/day s...
2017: PloS One
https://www.readbyqxmd.com/read/29019277/3d-cbct-morphometric-assessment-of-mental-foramen-in-arabic-population-and-global-comparison-imperative-for-invasive-and-non-invasive-procedures-in-mandible
#10
Mohammad Khursheed Alam, Selham Alhabib, Bader K Alzarea, Muhammad Irshad, Saif Faruqi, Mohd G Sghaireen, Santosh Patil, Rehana Basri
BACKGROUND: Recent advancements in clinical dentistry have increased the possibilities of surgical procedures in the mental region. A detailed knowledge of mental foramen (MF) morphometry is significant to preserve integrity of the mental nerve trunk in surgical interventions such as orthognathic surgery, implant placement and anaesthetic block. OBJECTIVE: The aim of this study was to determine the most accurate position of the mental foramen by using new assessment approach in a sample of dental patients presenting to the specialist dental clinic, College of Dentistry, Al Jouf University, Saudi Arabia...
October 11, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29016774/alveolar-bone-changes-after-rapid-maxillary-expansion-with-tooth-born-appliances-a-systematic-review
#11
Antonino Lo Giudice, Ersilia Barbato, Leandro Cosentino, Claudia Maria Ferraro, Rosalia Leonardi
Background: During rapid maxillary expansion (RME), heavy forces are transmitted to the maxilla by the anchored teeth causing buccal inclination and buccal bone loss of posterior teeth. Objective: To systematically review the literature in order to investigate whether RME causes periodontal sequelae, assessed by cone-beam computed tomography (CBCT). Search methods: Fifteen electronic databases and reference lists of studies were searched up to March 2017...
August 10, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29016762/diagnosis-of-tooth-ankylosis-using-panoramic-views-cone-beam-computed-tomography-and-histological-data-a-retrospective-observational-case-series-study
#12
Franziska Ducommun, Michael M Bornstein, Dieter Bosshardt, Christos Katsaros, Karl Dula
Objectives: The aim of this study was to determine whether cone beam computed tomography is a reliable radiological method to diagnose tooth ankylosis. Materials and methods: A series of teeth clinically diagnosed as ankylosed were collected after extraction in a private practice from 2009 to 2015 and analyzed retrospectively. Inclusion criteria comprised permanent molars extracted due to failed tooth eruption in the absence of any visible mechanical obstruction, existing panoramic view (PV), and cone beam computed tomography (CBCT) and histological sections of sufficient quality...
August 22, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29016734/the-impact-of-cone-beam-ct-on-financial-costs-and-orthodontists-treatment-decisions-in-the-management-of-maxillary-canines-with-eruption-disturbance
#13
Helena Christell, Stephen Birch, Lars Bondemark, Keith Horner, Christina Lindh
Background: Examination with Cone Beam CT (CBCT) is common for localizing maxillary canines with eruption disturbance. The benefits and costs of these examinations are unclear. Objectives: To measure: 1. the proportion of orthodontists' treatment decisions that were different based on intraoral and panoramic radiography (M1) compared with CBCT and panoramic radiography (M2); and 2. the costs of producing different treatment plans, regarding patients with maxillary canines with eruption disturbance...
June 24, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28994669/minibeam-radiotherapy-with-small-animal-irradiators-i-in-vitro-i-and-i-in-vivo-i-feasibility-studies
#14
Soha Bazyar, Christina R Inscoe, E Timothy O'Brien Iii, Otto Z Zhou, Yueh Z Lee
Minibeam radiation therapy (MBRT) delivers ultrahigh dose of X-ray (≥100 Gy) in 200-1000 μm beams (peaks), separated by wider non-irradiated regions (valleys) usually as a single temporal fraction. Preclinical studies performed at synchrotron facilities revealed that MBRT is able to ablate tumors while maintaining normal tissue integrity. The main purpose of present study was to develop an efficient and accessible method to perform MBRT using a conventional X-ray irradiator. We then tested this new method both in-vitro and in-vivo...
October 10, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28994668/correction-of-patient-motion-in-cone-beam-ct-using-3d-2d-registration
#15
Sarah Ouadah, Matthew W Jacobson, Joseph Webster Stayman, Tina Ehtiati, Clifford Raabe Weiss, Jeffrey H Siewerdsen
Cone-beam CT (CBCT) is increasingly common in guidance of interventional procedures but can be subject to artifacts arising from patient motion during fairly long (~5-60s) scan times. We present a fiducial-free method to mitigate motion artifacts using 3D-2D image registration that simultaneously corrects residual errors in the intrinsic and extrinsic parameters of geometric calibration. The 3D-2D registration process registers each projection to a prior 3D image by maximizing gradient orientation using the covariance matrix adaptation-evolution strategy (CMA-ES) optimizer...
October 10, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28992909/aberrant-left-subclavian-artery-in-a-beagle-puppy-with-a-persistent-right-aortic-arch-use-of-cone-beam-computed-tomography-to-diagnose-a-vascular-ring-anomaly
#16
Bertrand Vedrine, Franck Durieux
A 7-week-old, 1.045kg female beagle dog was referred to investigate a supposed vascular ring anomaly. Cone beam computed tomography with contrast enhanced arterial phase accomplished by a rapid manual intravenous injection of iodinated agent during the scanning process revealed a persistent right aortic arch and an aberrant left subclavian artery that compressed dorsally the esophagus in the cranial mediastinum. Third left intercostal thoracotomy was performed to transect the left subclavian artery. This is the first description of a vascular ring anomaly that was diagnosed with a cone beam computed tomography in veterinary medicine...
June 2017: Topics in Companion Animal Medicine
https://www.readbyqxmd.com/read/28992803/collagen-sponge-functionalized-with-chimeric-anti-bmp-2-monoclonal-antibody-mediates-repair-of-nonunion-tibia-defects-in-a-nonhuman-primate-model-an-exploratory-study
#17
Lijia Guo, Seiko Min, Yingying Su, Jianxia Tang, Juan Du, Bee Tin Goh, Leonardo Saigo, Songlin Wang, Sahar Ansari, Alireza Moshaverinia, Homayoun H Zadeh, Yi Liu
Recombinant human bone morphogenetic protein (BMP)-2 is an FDA-approved therapy for nonunion tibia fracture, though it has a number of biological and practical disadvantages. Our research group has developed a novel tissue engineering strategy termed antibody-mediated osseous regeneration. This entails application of anti-BMP-2 monoclonal antibodies (mAbs) to capture endogenous BMP's to mediate in vivo bone formation. This has been documented in a number of animal models. The present exploratory study sought to investigate the application of antibody-mediated osseous regeneration for repair of nonunion tibia defect in a nonhuman primate model...
October 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28992047/preliminary-comparison-of-the-registration-effect-of-4d-cbct-and-3d-cbct-in-image-guided-radiotherapy-of-stage-ia-non-small-cell-lung-cancer
#18
Zhibo Tan, Chuanyao Liu, Ying Zhou, Weixi Shen
In this study, we compared the registration effectiveness of 4D cone-beam computed tomography (CBCT) and 3D-CBCT for image-guided radiotherapy in 20 Stage IA non-small-cell lung cancer (NSCLC) patients. Patients underwent 4D-CBCT and 3D-CBCT immediately before radiotherapy, and the X-ray Volume Imaging software system was used for image registration. We performed automatic bone registration and soft tissue registration between 4D-CBCT or 3D-CBCT and 4D-CT images; the regions of interest (ROIs) were the vertebral body on the layer corresponding to the tumor and the internal target volume region...
July 15, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28991500/age-estimation-based-on-pulp-tooth-volume-ratio-measured-on-cone-beam-ct-images
#19
Ayse Gulsahi, Cemal Kivanc Kulah, Bahadir Bakirarar, Orhan Gulen, Kivanc Kamburoglu
OBJECTIVES: After tooth eruption, the size of the pulp cavity decreases with age due to deposition of secondary dentine. The aim of this study was to invastigate the relation between the Chronological age(CA) and the ratio of pulp volume (PV) to tooth volume (TV) measurements using cone-beam computed tomography (CBCT) images of single rooted teeth. METHODS: Maxillary anterior, canine and mandibular canine/premolar CBCT scans of patients older than 15 years of age were collected from the archives between 2013-2015 years...
October 9, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28989904/central-giant-cell-lesion-of-the-mandible-in-a-2-year-old-girl
#20
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
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