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https://www.readbyqxmd.com/read/28644107/gingival-perfusion-and-tissue-biomarkers-during-early-healing-of-post-extraction-regenerative-procedures-a-prospective-case-series
#1
Lamees Alssum, Timothy D Eubank, Sashwati Roy, Barbaros S Erdal, Vedat O Yildiz, Dimitris N Tatakis, Binnaz Leblebicioglu
BACKGROUND: Post-extraction alveolar bone loss, mostly affecting the buccal plate, occurs despite regenerative procedures. To better understand possible determinants, this prospective case series assessed gingival blood perfusion and tissue molecular responses in relation to post-extraction regenerative outcomes. METHODS: Adults scheduled to receive bone grafting in maxillary, non-molar, single tooth extraction site were recruited. Clinical documentation included probing pocket depth (PD), keratinized tissue width (KT), tissue biotype (TB), plaque (P) and bleeding...
June 23, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28643737/changes-in-pharyngeal-constrictor-volumes-during-head-and-neck-radiation-therapy-implications-for-dose-delivery
#2
Akila Kumarasiri, Chang Liu, Mona Kamal, Correen Fraser, Stephen Brown, Indrin J Chetty, Jinkoo Kim, Farzan Siddiqui
OBJECTIVE: The objective of this study was to evaluate the anatomical changes and associated dosimetric consequences to pharyngeal constrictor muscles (PCMs) that occur during head and neck (H and N) radiotherapy (RT). MATERIALS AND METHODS: A cohort of 13 oropharyngeal cancer patients with daily cone beam computed tomography (CBCT) was retrospectively studied. On every 5th CBCT image, PCM was manually delineated by a radiation oncologist. The anterior-posterior PCM thickness was measured at the midline level of C3 vertebral body...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643222/ridge-preservation-using-an-in-situ-hardening-biphasic-calcium-phosphate-%C3%AE-tcp-ha-bone-graft-substitute-a-clinical-radiological-and-histological-study
#3
Ashish Kakar, Bappanadu H Sripathi Rao, Shashikanth Hegde, Nikhil Deshpande, Annette Lindner, Heiner Nagursky, Aditya Patney, Harsh Mahajan
BACKGROUND: Post-Extraction ridge preservation using bone graft substitutes is a conservative technique to maintain the width of the alveolar ridge. The objective of the present study was to evaluate an in situ hardening biphasic (HA/β-TCP) bone graft substitutes for ridge preservation without primary wound closure or a dental membrane. METHODS: A total of 15 patients reported for tooth extraction were enrolled in this study. Implants were placed in average 5.2 ± 2 months after socket grafting...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28638666/osteoma-cutis-of-the-face-in-cbct-images
#4
Daniah Alhazmi, Fatma Badr, Fatima Jadu, Ahmed M Jan, Zainab Abdulsalam
Osteoma cutis (OC) is a rare benign disorder where osseous nodules form in the reticular layer of normal skin. These nodules are formed by the deposition of lamellar bone and are characterized by osteocytes in the core and osteoclasts around the periphery. Interpretation of osteoma cutis cases has always been challenging especially using conventional two-dimensional (2D) radiographs, owing to difficulty in localization. Cone beam CT (CBCT), with its three-dimensional (3D) capabilities, offers a great tool to help detect and diagnose these calcific entities...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28638170/atlas-based-automatic-measurements-of-the-morphology-of-the-tibiofemoral-joint
#5
M Brehler, G Thawait, W Shyr, J Ramsay, J H Siewerdsen, W Zbijewski
PURPOSE: Anatomical metrics of the tibiofemoral joint support assessment of joint stability and surgical planning. We propose an automated, atlas-based algorithm to streamline the measurements in 3D images of the joint and reduce user-dependence of the metrics arising from manual identification of the anatomical landmarks. METHODS: The method is initialized with coarse registrations of a set of atlas images to the fixed input image. The initial registrations are then refined separately for the tibia and femur and the best matching atlas is selected...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28637999/a-morphological-study-of-the-foramina-of-the-mandible-in-the-japanese-macaque-by-cone-beam-computed-tomography
#6
Masataka Sunohara, Yoko Miwa, Iwao Sato
The mandibular canal (MC) contains vessels and nerves in the mandible of the Japanese macaque (JM). The inferior alveolar nerves and vessels of the mandible insert from the mandibular foramen and then run through the MC, the mental foramen and spinal foramen to the outside of the mandible. However, the detailed morphological properties of multiple canals, such as the accessory canal (AC) of the mandible, are unknown in JMs. The purpose of this study was to describe the multiple canals of JMs and to determine the location and analyse the measurements of the JM mandible...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/28637985/three-dimensional-evaluation-of-the-location-of-the-mandibular-canal-using-cone-beam-computed-tomography-for-orthodontic-anchorage-devices
#7
Yasuki Uchida, Mitsuru Motoyoshi, Yasuhiro Namura, Noriyoshi Shimizu
This study investigated guidelines for placement of monocortical screws in the mandible, particularly the mandibular canal. In this study of 35 patients, we used cone-beam computed tomography to determine the distance from the alveolar crest to the superior border of the mandibular canal (DMC) and the shortest distance from the buccal and lingual cortex to the mandibular canal (attaining distance) in the areas between premolars (premolar area), between the second premolar and first molar (middle area), and between the first and second molars (molar area)...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28637451/performance-of-cone-beam-computed-tomography-and-conventional-intraoral-radiographs-in-detecting-interproximal-alveolar-bone-lesions-a-study-in-pig-mandibles
#8
Vanessa Camillo Almeida, Lucas Rodrigues Pinheiro, Fernanda Cristina Sales Salineiro, Fausto Medeiros Mendes, João Batista César Neto, Marcelo Gusmão Paraíso Cavalcanti, Cláudio Mendes Pannuti
BACKGROUND: Cone beam computed tomography (CBCT) has been largely used in dentistry. Nevertheless, there is lack of evidence regarding CBCT accuracy in the diagnosis of early periodontal lesions as well as the correlation between accuracy and lesion size. The aim of this study was to evaluate accuracy of CBCT and conventional intraoral radiographs in detecting different-sized interproximal bone lesions created in pig mandibles. The hypothesis was that CBCT accuracy would be superior to radiographs in detecting incipient bone lesions...
June 21, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28637237/long-term-evolutionary-change-in-the-lumen-of-intracranial-atherosclerotic-stenosis-following-angioplasty-and-stenting
#9
Simon C H Yu, Tiffany W W Lau, Simon S M Wong, Kwok T Lee, Lawrence K S Wong, Thomas W H Leung
BACKGROUND: Angioplasty and stenting is a recognized treatment option for patients with intracranial atherosclerosis. OBJECTIVE: To evaluate the long-term evolutionary luminal changes of intracranial atherosclerosis after angioplasty and stenting. METHODS: This was a retrospective study with patient consent. Eighty-two patients presenting with acute and minor cerebral ischemia due to stenosis ≥70%, who had received medical therapy with or without stenting (Wingspan), were invited...
June 14, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28635238/-comparison-of-vacuum-bag-fixation-and-orfit-rack-with-thermoplastic-membrane-fixation-for-image-guided-cervical-cancer-radiotherapy
#10
Y B Li, Y L Wang, Y H Zhuo
Objective: To compare the difference of displacement between the vacuum bag fixation and the Orfit rack with thermoplastic membrane fixation of the cervical cancer patients, and to explore the individual fixation of the patients. Methods: We retrospectively analyzed the clinical data of 66 patients diagnosed as cervical cancer in Zhangzhou Municipal Hospital of Fujian Province from December 2014 to April 2016. Among them, 33 patients were fixed with vacuum bag, 33 patients were fixed with the Orfit rack with thermoplastic membrane...
June 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28631287/incidental-findings-of-implant-complications-on-postimplantation-cbcts-a-cross-sectional-study
#11
Danielle Clark, Horia Barbu, Adi Lorean, Eitan Mijiritsky, Liran Levin
BACKGROUND: Survival rates of dental implants are reported to be very high and seem to indicate minimal complications related to dental implants. PURPOSE: The aim of this report was to evaluate in a cross-sectional study the prevalence of implant positioning complications as appears in postimplantation Cone-Beam Computerized Tomography (CBCT) in two of the major imaging facilities in Bucharest, Romania. METHODS: Demographic and implant data was collected from two of the three main CBCT facilities in Bucharest, Romania...
June 20, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28631190/pedicle-screw-insertion-accuracy-in-terms-of-breach-and-reposition-using-a-new-intraoperative-cone-beam-computed-tomography-imaging-technique-and-evaluation-of-the-factors-associated-with-these-parameters-of-accuracy-a-series-of-695-screws
#12
Virginie Cordemans, Ludovic Kaminski, Xavier Banse, Bernard G Francq, Christine Detrembleur, Olivier Cartiaux
PURPOSE: The goals of this study were to assess the accuracy of pedicle screw insertion using an intraoperative cone beam computed tomography (CBCT) system, and to analyze the factors potentially influencing this accuracy. METHODS: Six hundred and ninety-five pedicle screws were inserted in 118 patients between October 2013 and March 2016. Screw insertion was performed using 2D-fluoroscopy or CBCT-based navigation. Accuracy was assessed in terms of breach and reposition...
June 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28630855/qualitative-correlation-between-postoperatively-increased-vertical-dimension-and-mandibular-position-in-skeletal-class-iii-using-partial-least-square-path-modeling
#13
Na-Ri Kim, Soo-Byung Park, Jihyun Lee, Youn-Kyung Choi, Sang Min Shin, Yong-Seok Choi, Yong-Il Kim
BACKGROUND: This study constructed a partial-least-square path-modeling (PLS-PM) model and found the pathway by which the postsurgical vertical dimension (VD) affects the extent of the final mandibular setback on the B point at the posttreatment stage for the skeletal class III surgery-first approach (SFA). METHODS: This study re-analyzed the data from the retrospective study by Lee et al. on 40 patients with skeletal class III bimaxillary SFA. Variables were obtained from cone beam computed tomography (CBCT)-generated cephalograms...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28628161/-detection-and-management-of-the-vascular-paths-in-the-lateral-sinus-wall-using-cone-beam-computed-tomography
#14
(no author information available yet)
OBJECTIVE: To detect the vascular paths in the lateral wall of maxillary sinus using cone beam computer tomography (CBCT), and to retrospect the surgical managements of avoiding bleeding complication during the lateral approach maxillary sinus elevation. METHODS: The documents of 71 consecutive patients with 81 sides maxillary sinus elevation surgery were collected. The vascular paths in the lateral wall of maxillary sinus were detected by the preoperative CBCT, and the messages about the vascular in surgical records were analyzed...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627007/optical-molecular-imaging-guided-radiation-therapy-part-1-integrated-x-ray-and-bioluminescence-tomography
#15
Junwei Shi, Thirupandiyur S Udayakumar, Zhiqun Wang, Nesrin Dogan, Alan Pollack, Yidong Yang
PURPOSE: X-ray CT faces challenges in differentiating tumors from surrounding healthy tissues. A bioluminescence tomography (BLT) system which can directly reconstruct the internal luminescent tumors, was developed and integrated with CT system to accurately guide radiation dose delivery. METHODS: The BLT system, employing a lens-coupled CCD camera, was physically registered with an onboard cone beam CT system in an image guided small animal arc radiation treatment system (iSMAART)...
June 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28626876/optical-molecular-imaging-guided-radiation-therapy-part-2-integrated-x-ray-and-fluorescence-molecular-tomography
#16
Junwei Shi, Thirupandiyur S Udayakumar, Zhiqun Wang, Nesrin Dogan, Alan Pollack, Yidong Yang
PURPOSE: Differentiating tumor from its surrounding soft tissues is challenging for x-ray computed tomography (CT). Fluorescence molecular tomography (FMT) can directly localize the internal tumors targeted with specific fluorescent probes. A FMT system was developed and integrated onto a CT guided irradiator to improve tumor localization for image guided radiation. METHODS: The FMT system was aligned orthogonal to the cone beam CT onboard our previously developed image guided small animal arc radiation treatment system (iSMAART)...
June 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28624835/cbct-location-of-the-fusion-between-the-buccal-and-lingual-cortical-in-the-mandibular-ramus-importance-to-sagittal-split-osteotomy
#17
L Scomparin, M-Q-S Soares, C-M-F Rubira, R-Y-F Yaedú, T-S-N Imada, B-S Centurion, E-S Tolentino, J-R-P Lauris, I-R-F Rubira-Bullen
BACKGROUND: Mandibular Sagittal Split Osteotomy (MSSO) is a popular technique in orthognathic surgery used both to advance and to retreat the mandible. However, MSSO may incur in important complications, such as bad splits and sensorineural injuries. Knowing the location of the fusion between the buccal and lingual cortical (FBLC) in the mandibular ramus and the bone thickness in the region where osteotomies will be performed is determinant in MSSO planning to avoid complications. The aim of this study was to document and evaluate possible differences between sexes regarding the location of the FBLC in relation to the superior cortical of mandibular foramen (MF) and bone thickness in the region of interest for MSSO in a Brazilian population...
June 18, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28624341/extranodal-lymphoma-arising-within-the-maxillary-alveolus-a-case-report
#18
David MacDonald, Thomas Li, Siu Fai Leung, Justin Curtin, Andy Yeung, Montgomery A Martin
OBJECTIVE: Extranodal lymphomas affecting the head and neck arise infrequently within the bones of the jaws. This is a report of a symptom-free patient whose general dentist detected a radiolucency as an incidental finding on conventional radiography. STUDY DESIGN: The conventional radiography of lesions in the maxilla displayed "floating teeth" indicative of malignancy. This case was then imaged by cone beam computed tomography (CBCT), multidetector computed tomography (MDCT), and magnetic resonance imaging (MRI)...
May 4, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28623685/two-stage-ridge-split-at-narrow-alveolar-mandibular-bone-ridges
#19
Ivo Agabiti, Daniele Botticelli
PURPOSE: When the bone ridge is corticalized, the displacement of the buccal plate may result in an unintentional malfracture. The aim of this study was to report the results of a 2-stage atrophic alveolar ridge expansion performed with a sonic-air surgical instrument. MATERIALS AND METHODS: In this retrospective cohort study, the atrophic distal segments of the mandible were treated by a split-thickness flap approach and application of an alveolar ridge expansion performed in 2 surgical phases...
May 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28621324/marginal-bone-loss-around-non-submerged-implants-is-associated-with-salivary-microbiome-during-bone-healing
#20
Xiao-Bo Duan, Ting-Xi Wu, Yu-Chen Guo, Xue-Dong Zhou, Yi-Ling Lei, Xin Xu, An-Chun Mo, Yong-Yue Wang, Quan Yuan
Marginal bone loss during bone healing exists around non-submerged dental implants. The aim of this study was to identify the relationship between different degrees of marginal bone loss during bone healing and the salivary microbiome. One hundred patients were recruited, and marginal bone loss around their implants was measured using cone beam computed tomography during a 3-month healing period. The patients were divided into three groups according to the severity of marginal bone loss. Saliva samples were collected from all subjected and were analysed using 16S MiSeq sequencing...
June 16, 2017: International Journal of Oral Science
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