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https://www.readbyqxmd.com/read/28212886/primary-ameloblastoma-of-the-temporal-bone
#1
Andro Košec, Jakov Ajduk, Mihael Ries, Robert Trotić
Ameloblastoma is a locally aggressive tumor derived from odontogenic epithelium. Although benign, its clinical behavior can often exhibit malignant characteristics. It is marked by slow and persistent growth with infiltration of adjacent tissues. Almost 70% occur in the mandible in patients older than 30 years. Recurrence of ameloblastoma from inadequate treatment is frequent. Because of its slow growth, recurrences can present decades after primary surgery. A primary ameloblastoma in an area outside the mandibular, maxillary, and infratemporal fossa regions has not been described in detail to date, with only 1 possible case mentioned in the literature...
January 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28212454/clinical-comparison-of-screw-retained-and-screwless-morse-taper-implant-abutment-connections-one-year-postloading-results
#2
Esma Geckili, Onur Geckili, Hakan Bilhan, Omer Kutay, Tayfun Bilgin
PURPOSE: The purpose of this study was to clinically evaluate the screwless Morse taper implant-abutment connection type, in which the retention screw is totally eliminated, in terms of stability, success, periodontal parameters, and marginal bone levels after 1 year of function by comparing it with a passive fit internal implant-abutment connection, wherein a space exists between the matching components. MATERIALS AND METHODS: Each edentulous subject received an implant with a screwless Morse taper connection (MT) in the left canine area of the mandible and an implant with a screw-retained implant-abutment connection (SR) in the right canine area of the mandible...
February 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28212129/endoscopic-removal-of-a-dental-implant-from-maxillary-sinus
#3
Serkan Dundar, Turgut Karlidag, Erol Keles
The displacement of a dental implant into the maxillary sinus during surgery or after a period of use is a complication defined in the dental implant clinical practice. This complication arises primarily from inadequate bone height and peri-implant infection. Specifically, foreign objects in the maxillary sinus can cause sinusitis via impaired mucociliary flow and foreign body reactions, so they must be removed. Caldwell-Luc, transnasal, and intraoral endoscopic sinus surgeries have all been used to remove such foreign bodies and lesions from maxillary sinuses...
February 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28209011/non-surgical-management-of-skeletal-class-iii-malocclusion-with-bilateral-posterior-crossbite-a-case-report
#4
Lalima Kumari, Kamal Nayan
A 16-year-old female patient with skeletal Class III malocclusion and bilateral posterior cross bite complaining of difficulty in chewing was treated orthodontically without surgery (camouflage treatment). The treatment comprised of fixed orthodontic treatment with MBT prescription (0.022˝×0.028˝ slot) using quad helix appliance for bilateral expansion of maxillary arch and Class III elastics for occlusal correction. Post-treatment records showed normal overbite and overjet with acceptable occlusion. So with this treatment strategy of expanding the maxillary arch using a quad helix appliance and use of Class III elastics, we achieved a good result with optimal occlusion...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207597/implant-anchorage-in-the-nasopalatine-canal-for-the-rehabilitation-of-severely-atrophic-maxilla
#5
Pâmela Leticia Dos Santos, Gustavo Henrique Souza Silva, Raquel Damazia da Silva, Fernanda Rayssa Da Silva Pereira, Jéssica Lemos Gulinelli
PURPOSE: This study aimed to describe the clinical case of implant placement in the nasopalatine canal as an aid for atrophic maxilla rehabilitation. CASE REPORT: The surgical procedure was carried out in 2 stages, the first part consisted of a surgery to lift the maxillary sinus membrane associated with the xenogeneic bone placement and the second part consisted of the surgery for the implants placement, both under local anesthesia. A number of seven osseointegrated implants were placed in the maxilla, one was anchored in the nasopalatine canal region after having its neurovascular content emptied by means of the use of drill threads of the implant system...
February 14, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28207462/what-are-the-contributing-factors-for-postsurgical-relapse-after-two-jaw-surgery-in-patients-with-cleft-lip-and-palate
#6
Yoon-Hee Park, Ji-Hee Seo, Il-Hyung Yang, Jin-Young Choi, Jong-Ho Lee, Myung-Jin Kim, Seung-Hak Baek
The purpose of this study was to investigate the amount and pattern of postsurgical relapse after 2-jaw surgery in cleft lip and palate patients in terms of the sagittal and vertical aspects. The samples consisted of 21 adult patients who had the similar initial skeletodental pattern before surgery and underwent 2-jaw surgery. They were divided into high relapse (n = 11) and low relapse groups (n = 10) (criteria, 30% forward relapse of the B point). After the cephalometric variables of cephalograms taken at 1 month before surgery (T0), immediately after surgery (T1), and at least 1 year after surgery (T2) were measured, the Wilcoxon test, Mann-Whitney U test, and Pearson correlation test were performed for statistical analysis...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28206730/sinus-presurgical-evaluation-a-literature-review-and-a-new-classification-proposal
#7
Lorenzo Tavelli, Andrea E Borgonovo, Dino Re, Carlo Maiorana
Presurgical evaluation with cone beam computed tomography (CBCT) or computed tomography (CT) has become an essential tool for diagnosis and surgical planning, including maxillary sinus floor elevation. Before performing a sinus lift, the clinician's attention should not be only directed to the patency of the ostium through CBCT or CT, because many anatomical features could influence the surgical approach of sinus floor elevation. The goal of this article was to facilitate the communication between clinicians regarding the type of maxillary sinus, encourage in-depth analysis prior to surgery and reduce the risk of complications due to possible underestimation of important parameters...
February 15, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28202996/-surgical-reconstruction-of-maxillary-defects-using-a-computer-assisted-techniques
#8
W B Zhang, Y Yu, Y Wang, X J Liu, C Mao, C B Guo, G Y Yu, X Peng
The maxilla is the most important bony support of the mid-face skeleton and is critical for both esthetics and function. Maxillary defects, resulting from tumor resection, can cause severe functional and cosmetic deformities. Furthermore, maxillary reconstruction presents a great challenge for oral and maxillofacial surgeons. Nowadays, vascularized composite bone flap transfer has been widely used for functional maxillary reconstruction. In the last decade, we have performed a comprehensive research on functional maxillary reconstruction with free fibula flap and reported excellent functional and acceptable esthetic results...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202369/histomorhological-and-clinical-evaluation-of-maxillary-alveolar-ridge-reconstruction-after-craniofacial-trauma-by-applying-combination-of-allogeneic-and-autogenous-bone-graft
#9
Francesco Saverio De Ponte, Roberto Falzea, Michele Runci, Enrico Nastro Siniscalchi, Floriana Lauritano, Ennio Bramanti, Gabriele Cervino, Marco Cicciu
A variety of techniques and materials for the rehabilitation and reconstruction of traumatized maxillary ridges prior to dental implants placement have been described in literature. Autogenous bone grafting is considered ideal by many researchers and it still remains the most predictable and documented method. The aim of this report is to underline the effectiveness of using allogeneic bone graft for managing maxillofacial trauma. A case of a 30-year-old male with severely atrophic maxillary ridge as a consequence of complex craniofacial injury is presented here...
January 20, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28195897/base-of-skull-blocks-for-open-reduction-and-internal-fixation-of-faciomaxillary-fractures
#10
Sandeep Mehrotra, Sunil Anand
INTRODUCTION: Faciomaxillary fractures (FMF) occur in a significant proportion of trauma patients. Nearly all polytrauma patients and even those with isolated FMF are managed under general anesthesia for definitive management. We propose the use of regional nerve blocks as a safe and effective means for open reduction and fixation of isolated FMF. AIM AND OBJECTIVES: The aim is to evaluate the feasibility, effectiveness and safety of base of skull maxillomandibular and distal trigeminal nerve blocks in the management of FMF...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28193324/stability-of-large-maxillary-advancements-using-a-combination-of-prebent-and-conventional-plates-for-fixation
#11
Marwa Ragaey, Joseph E Van Sickels
OBJECTIVE: The purpose of this study was to determine the stability of one and two jaw maxillary advancements fixed with prebent plates and "L"-shaped plates. STUDY DESIGN: Twenty-six patients met the inclusion criteria (group 1: one jaw [14]; group 2: two jaws [12]). Radiographs were digitized before surgery (T1), immediately after surgery (T2), at 6 weeks (T3), and at 6 months (T4). Stability was assessed comparing A-point movement and change in palatal plane...
January 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28192870/clinical-and-immunohistochemical-performance-of-lyophilized-platelet-rich-fibrin-ly-prf-on-tissue-regeneration
#12
Jianming Zhang, Xingying Qi, Xiaoding Luo, Dan Li, Haorong Wang, Ting Li
BACKGROUND: Platelet-rich fibrin (PRF) has been widely used in oral implantology and other fields, but benefits of the fresh PRF (FPRF (fresh platelet-rich fibrin)) were consequently limited because of its short-term application. Thus, a protocol for the combination of PRF and lyophilization comes up in the present study to address the issue of PRF storage and delayed clinical application, which has little been reported in this field at home and abroad by now. PURPOSE: The aim of the present study was to evaluate the applicability of lyophilized platelet-rich fibrin (Ly-PRF) used as the scaffold material for craniofacial tissue regeneration and to compare its biochemical properties with commonly used fresh PRF...
February 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28185781/classification-of-orbital-exenteration-and-reconstruction
#13
Marco R Kesting, Steffen Koerdt, Niklas Rommel, Thomas Mücke, Klaus-Dietrich Wolff, Christopher P Nobis, Florian Ringel, Gesche Frohwitter
Orbital exenteration (OE) is considered to be a mutilating surgical procedure reserved for relentlessly progressive neoplastic disorders or extensive facial trauma with unfavourable eye involvement. Malignant tumours, accounting for the majority of ablative orbital surgeries, may be caused by primary orbital tumours or secondarily by neoplasias from the surrounding skin, the maxillary sinus or intracranial malignomas. Orbital exenteration following trauma is mostly caused by penetrating globe defects or extended infections with the danger of intracranial effects...
January 10, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28185708/use-of-autogenous-bone-and-beta-tricalcium-phosphate-in-maxillary-sinus-lifting-histomorphometric-study-and-immunohistochemical-assessment-of-runx2-and-vegf
#14
R S Pereira, L F Gorla, F B J D Boos, R Okamoto, I R Garcia Júnior, E Hochuli-Vieira
The aim of this study was to compare the use of beta-tricalcium phosphate (β-TCP) (chronOS) with autogenous bone grafts alone in maxillary sinus elevation surgery. The test samples were β-TCP alone, β-TCP mixed with autogenous bone grafts (1:1), and autogenous bone grafts alone. Twelve maxillary sinuses were grafted with β-TCP (group 1), nine with β-TCP+autogenous bone graft (group 2), and 12 with autogenous bone graft (group 3). After 6 months, biopsies were obtained concurrent to the placement of dental implants; these were subjected to histomorphometric analysis and immunohistochemical analysis for runt-related transcription factor 2 (RUNX2) and vascular endothelial growth factor (VEGF)...
February 6, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28182072/evaluation-of-the-effects-of-two-different-bone-resorption-inhibitors-on-osteoclast-numbers-and-activity-an-animal-study
#15
Narges Naghsh, Sayed Mohammad Razavi, Mohsen Minaiyan, Mohammad Shahabooei, Reza Birang, Parichehr Behfarnia, Samira Hajisadeghi
BACKGROUND: The aim of this study was to evaluate the effects of bone resorption inhibitors, doxycycline (DOX) and erythromycin (EM), on osseous wound healing in rat alveolar socket. MATERIALS AND METHODS: In this randomized controlled trial, 45 8-10-week-old male Wistar rats had their maxillary right molar extracted. They were divided into three groups of 15. In Group 1 normal saline, Group 2 DOX, and Group 3 EM were administered at the doses of 5 ml/kg/day, 5 mg/kg/day, and 2 mg/kg/day, respectively, for 7 consecutive days...
November 2016: Dental Research Journal
https://www.readbyqxmd.com/read/28182056/botox-as-an-adjunct-to-lip-repositioning-for-the-management-of-excessive-gingival-display-in-the-presence-of-hypermobility-of-upper-lip-and-vertical-maxillary-excess
#16
Lobna Abdel Aly, Nelly Ibrahim Hammouda
BACKGROUND: Excessive gingival display (GD) is a frequent finding that can occur because of various intraoral or extraoral etiologies. This work describes the use of a mucosal repositioned flap for the management of a gummy smile associated with vertical maxillary excess (VME) and hypermobility of the upper lip followed by injection of Botox. MATERIALS AND METHODS: Seven female patients in the age range of 17-25 years presented with a gummy smile. At full smile, the average GD ranged from 6 to 8 mm...
November 2016: Dental Research Journal
https://www.readbyqxmd.com/read/28181086/bilateral-cavernous-carotid-aneurysms-treated-by-two-stage-extracranial-intracranial-bypass-followed-by-parent-artery-occlusion-case-report-and-literature-review
#17
Yaoling Liu, Xiang'en Shi, Fangjun Liu, Yuming Sun, Hai Qian, Ting Lei
Bilateral cavernous carotid aneurysms (CCAs) are often not amenable to neurosurgical clipping or endovascular coiling. Here, we report the case of a 50-year-old female who presented with a 1-year history of gradual severe headache. Preoperative angiograms revealed bilateral CCAs. Among these findings, the right giant CCA had been trapped after the external carotid artery-saphenous vein-middle cerebral artery (ECA-SV-MCA) bypass 8 years prior. Additionally, the left CCA was again trapped after the internal maxillary artery-radial artery-middle cerebral artery (IMA-RA-MCA) bypass, followed by parent artery occlusion (PAO), because of the enlargement of a 0...
February 8, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28169905/reconstruction-of-large-orbital-posterior-floor-wall-fracture-considering-orbital-floor-slope-using-endoscope
#18
Jinhwan Park, Jungah Huh, Joonsik Lee, Minwook Chang, Hwa Lee, Minsoo Park, Sehyun Baek
PURPOSE: Reconstruction of a large orbital fracture extending to the posterior wall of the maxillary sinus is difficult and challenging. In this study, the authors present transconjunctival or transcaruncular approach using endoscopy and layered porous polyethylene barrier sheets to manage large orbital floor wall fracture. METHODS: A retrospective review of all patients who underwent reconstruction of large orbital floor wall fractures between June 2009 and July 2015 was conducted...
February 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28169263/comparison-of-soft-tissue-changes-in-simultaneous-maxillomandibular-distraction-with-mandibular-distraction-with-second-stage-maxillary-osteotomy
#19
S M Balaji, Preetha Balaji
BACKGROUND: The purpose of this study was to compare the frontal lip cant changes in common facial asymmetry (FA) cases after simultaneous maxillomandibular distraction osteogenesis (DO) and mandibular DO with maxillary orthognathic surgery. MATERIALS AND METHODS: Retrospective analysis of FA cases at tertiary craniofacial referral was performed. Patients of either gender with all medical imaging records and pre- and post-operative (1 year) facial photographs in natural head position were included in the study...
November 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28168901/graft-free-maxillary-sinus-floor-elevation-a-systematic-review-and-meta-analysis
#20
Deng-Hui Duan, Jia-Hui Fu, Wei Qi, Yi Du, Jie Pan, Hom-Lay Wang
AIM: This systematic review and meta-analysis aimed to investigate survival rates of dental implants (ISR) placed simultaneously with graft-free maxillary sinus floor elevation. Factors influencing the amount of vertical bone gain (VBG), protruded implant length in sinus at follow-up (PILf), and peri-implant marginal bone loss (MBL) were also evaluated. METHODS: An electronic and manual search for human clinical studies on simultaneous implant placement and graft-free maxillary sinus floor elevation using the lateral window or transcrestal approach, published in the English language from January 1976 to March 2016, was conducted...
February 7, 2017: Journal of Periodontology
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