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https://www.readbyqxmd.com/read/28038480/intracranial-ameloblastoma-arising-from-the-maxilla-an-interdisciplinary-surgical-approach
#1
Johanna Quick-Weller, Felix Koch, Nazife Dinc, Stephanie Lescher, Peter Baumgarten, Patrick Harter, Friedrich Scheerer, Robert Sader, Volker Seifert, Gerhard Marquardt, Thomas Freiman
Background Ameloblastomas are a rare tumor entity accounting for only 10% of all odontogenic tumors. They mostly originate from the mandible. Only a few cases are known to grow aggressively and to invade the orbit, nasal cavity, or even the brain. Patient and Methods/Case Report We present the case of a 57-year-old patient who was admitted with a huge tumor involving the nasal cavity, the left maxilla, and the anterior fossa. Histologic diagnosis was made by biopsy. A combined two-stage neurosurgical maxillofacial approach was planned...
December 30, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28000282/coverage-of-mucosal-recessions-at-dental-implants
#2
REVIEW
Anton Sculean, Vivianne Chappuis, Raluca Cosgarea
Facial peri-implant mucosal recessions represent an increasing complication in implant dentistry and may negatively affect the esthetic outcome and patient satisfaction. The aim of the present paper is to provide a review on the potential causes of facial peri-implant mucosal recessions and to provide a rationale for treatment along with possible treatment options. The available data indicate that soft tissue augmentation around dental implants is possible, but at present there is no evidence demonstrating that the augmented soft tissues are able to influence the peri-implant bone levels (e...
February 2017: Periodontology 2000
https://www.readbyqxmd.com/read/27995123/evaluation-of-clinical-outcomes-of-implants-placed-into-the-maxillary-sinus-with-a-perforated-sinus-membrane-a-retrospective-study
#3
Gwang-Seok Kim, Jae-Wang Lee, Jong-Hyon Chong, Jeong Joon Han, Seunggon Jung, Min-Suk Kook, Hong-Ju Park, Sun-Youl Ryu, Hee-Kyun Oh
BACKGROUND: The aim of this study was to evaluate the clinical outcomes of implants that were placed within the maxillary sinus that has a perforated sinus membrane by the lateral window approach. METHODS: We examined the medical records of the patients who had implants placed within the maxillary sinus that has a perforated sinus membrane by the lateral approach at the Department of Oral and Maxillofacial Surgery of Chonnam National University Dental Hospital from January 2009 to December 2015...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27990504/the-clinical-value-of-membranes-in-bone-augmentation-procedures-in-oral-implantology-%C3%A2-a-systematic-review-of-randomised-controlled-trials
#4
Brend P Jonker, Maarten W K Roeloffs, Eppo B Wolvius, Justin Pijpe
PURPOSE: To determine the clinical value of membranes in bone augmentation procedures such as ridge augmentation with simultaneous (one-stage) and delayed (two-stage) implant placement, sinus augmentation surgery, ridge preservation and immediate implant placement. MATERIALS AND METHODS: In April 2016, Embase, Medline (Ovid-SP), Cochrane Central, Web of Science and PubMed (as supplied by the publisher) were searched. There were no restrictions regarding language or publication date...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27968706/radiopacity-of-alloplastic-bone-grafts-measured-with-cone-beam-computed-tomography-an-analysis-in-rabbit-calvaria
#5
Cristina Bucchi, Eduardo Borie, Alain Arias, Fernando José Dias, Ramón Fuentes
Availability of adequate bone structure for dental implants is still a problem in dentistry. Alloplastic grafts, which promote bone regeneration, are used as bone substitutes in orthopedic and oral surgical procedures. The aim of this study was to evaluate the radiopacity of three different synthetic bone grafts in rabbit calvaria, over 3 months, using cone beam computed tomography (CBCT). Four critical-size defects were made on the calvaria of 11 rabbits. The lesions were classified into three groups according to the alloplastic grafts they received: Osteon® 70/30, Osteon collagen®, and Osteon II® groups...
November 22, 2016: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27930813/free-gingival-grafts-for-implants-exhibiting-lack-of-keratinized-mucosa-a-prospective-controlled-randomized-clinical-study
#6
Se-Lim Oh, Radi M Masri, David A Williams, Chao Ji, Elaine Romberg
INTRODUCTION: To evaluate clinical and radiographic outcomes following free gingival grafts (FGGs) around implants with limited keratinized mucosa (KM) during 18 months follow-up compared to oral prophylaxis without augmentation. MATERIALS AND METHODS: This prospective controlled randomized blind clinical study investigated 41 implants displaying lack of KM in 28 subjects. After baseline examination, fourteen subjects in the experimental group received FGGs followed by oral prophylaxis and fourteen subjects in the control group received oral prophylaxis only...
December 8, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27915980/molecular-cellular-and-pharmaceutical-aspects-of-synthetic-hydroxyapatite-bone-substitutes-for-oral-and-maxillofacial-grafting
#7
Werner Goetz, Spyridon N Papageorgiou
Bone grafts are widely used for augmentation procedures in oral and maxillofacial surgery, with autogenous bone being the gold standard. Recently, the focus of research has shifted towards synthetic bone substitutes, as no second surgery is needed and large quantities of graft can easily be provided. Within the broad range of bone substitutes, synthetic hydroxyapatite has drawn much attention, as they are considered to be biocompatible, non-immunogenic, osteoconductive and osteoinductive. Scope of this review is to summarize existing knowledge concerning the molecular, cellular and pharmaceutical aspects of synthetic bone substitutes for oral and maxillofacial grafting...
December 1, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27882311/retrospective-clinical-study-of-an-implant-with-a-sandblasted-large-grit-acid-etched-surface-and-internal-connection-analysis-of-short-term-success-rate-and-marginal-bone-loss
#8
Jae-Wang Lee, Jun Hyeong An, Sang-Hoon Park, Jong-Hyon Chong, Gwang-Seok Kim, JeongJoon Han, Seunggon Jung, Min-Suk Kook, Hee-Kyun Oh, Sun-Youl Ryu, Hong-Ju Park
BACKGROUND: The purpose of this retrospective study was to evaluate the clinical utility of an implant with a sandblasted, large-grit, acid-etched (SLA) surface and internal connection. METHODS: Six patients who received dental implants in the Department of Oral and Maxillofacial Surgery, Chonnam National University Dental Hospital, were analyzed by factors influencing the success rate and marginal bone loss. Factors included patient's age, sex, implant installation site, whether bone graft was done, type of bone graft materials, approaching method if sinus lift was done, and the size of the fixture...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27880030/osseointegrated-implants-into-a-variety-of-composite-free-flaps-a-comparative-analysis
#9
Michael Burgess, Matthew Leung, Anthony Chellapah, Jonathan R Clark, Martin D Batstone
BACKGROUND: Significant oral function is often lost after surgical therapy for head and neck cancer. The use of osseointegrated implants for reconstruction in patients with head and neck surgery has shown to significantly improve the quality of life for these patients. Variable success rates range from 99% to 70%. METHODS: A retrospective audit of patient records was performed looking at cumulative survival of implants. Inclusion criteria were patients who were treated at 1 of 2 designated Australian Head and Neck Units and received oral osseointegrated implants...
November 23, 2016: Head & Neck
https://www.readbyqxmd.com/read/27876576/the-bone-regenerative-capacity-of-canine-mesenchymal-stem-cells-is-regulated-by-site-specific-multilineage-differentiation
#10
Juan Bugueño, Weihua Li, Pinky Salat, Ling Qin, Sunday O Akintoye
OBJECTIVES: Mesenchymal stem cells (MSCs) offer a promising therapy in dentistry because of their multipotent properties. Selecting donor MSCs is crucial because Beagle dogs (canines) commonly used in preclinical studies have shown variable outcomes, and it is unclear whether canine MSCs (cMSCs) are skeletal site specific. This study tested whether jaw and long bone cMSCs have disparate in vitro and in vivo multilineage differentiation capabilities. STUDY DESIGN: Primary cMSCs were isolated from the mandible (M-cMSCs) and femur (F-cMSCs) of four healthy Beagle dogs...
September 28, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/27871294/newly-designed-retentive-posts-of-mandibular-reconstruction-plate-in-oral-cancer-patients-based-on-preliminary-fem-study
#11
Ik Jae Kwon, Mi Young Eo, Sung Jae Park, Soung Min Kim, Jong Ho Lee
BACKGROUND: The reconstruction of a large mandibular defect poses a challenging issue in oral cancer ablation surgery. One popular option for mandibular continuity reconstruction after tumor resection involves the use of a reconstruction plate (R-plate), which maintains space and contour without bone harvesting. An R-plate, however, cannot provide final functional loading rehabilitation with implants or dentures. METHODS: We suggest a new method of functional mandibular reconstruction using retentive posts and an upper prosthesis...
November 21, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27867669/simplifying-the-treatment-of-bone-atrophy-in-the-posterior-regions-combination-of-zygomatic-and-wide-short-implants-a-case-report-with-2-years-of-follow-up
#12
Fernanda Faot, Geninho Thomé, Amália Machado Bielemann, Caio Hermann, Ana Cláudia Moreira Melo, Luis Eduardo Marques Padovan, Ivete Aparecida de Mattias Sartori
The rehabilitation of maxillary and mandibular bone atrophy represents one of the main challenges of modern oral implantology because it requires a variety of procedures, which not only differ technically, but also differ in their results. In the face of limitations such as deficiencies in the height and thickness of the alveolar structure, prosthetic rehabilitation has sought to avoid large bone reconstruction through bone grafting; this clinical behavior has become a treatment system based on evidence from clinical scientific research...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27860210/limitation-of-the-antibiotic-eluting-bone-graft-substitute-an-example-of-gentamycin-impregnated-calcium-sulfate
#13
Chang-Chin Wu, Yang-Kai Huang, Wei-Jen Chang, Yun-Ching Wu, Chen-Chie Wang, Kai-Chiang Yang
Patients with inadequate volume of alveolar processes or bone defects commonly require graft substitutes in oral, maxillofacial or orthopedic surgery. Ridge augmentation and reconstruction of facial bony defects with bone graft materials achieve better outcomes in functional and aesthetic rehabilitation. The injectable calcium sulfate filler is used widely in intra-operative applications. Calcium sulfate bone filler has been shown to upregulate bone formation-related mRNA genes in vitro and improve osseointegration in vivo...
November 18, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27848009/the-effects-of-p-gp-and-cyp450-modulated-by-rifampicin-on-the-steroid-induced-osteonecrosis-of-the-femoral-head
#14
Teng Fei, Yunchao Shao, Zuoqin Yan, Liang Zhu, Shuo Li, Jianfeng Pan, Changan Guo
This study investigated the effects of rifampicin-modulated P-glycoprotein (P-gp) and cytochrome P450 (CYP450) activity on the development of steroid-induced osteonecrosis of the femoral head. Thirty-two rabbits were equally divided into four groups: control group, oral administration group, intramuscular injection group, and local release group, in which rifampicin-loaded artificial bone graft was implanted in the left femur cavity and blank bone graft was implanted in the right femur cavity. Dexamethasone was given 1 week after rifampicin administration...
November 15, 2016: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/27842482/antibiotic-release-from-calcium-phosphate-materials-in-oral-and-maxillofacial-surgery-molecular-cellular-and-pharmaceutical-aspects
#15
Angel Manchon, Juan Carlos Prados-Frutos, Carmen Rueda Rodriguez, Carmen Salinas Goodier, Mohammad Hadman Alkhraisat, Rosa Rojo, Arantza Rodriguez Gonzalez, Ana Berlanga, Enrique Lopez Cabarcos
Calcium phosphate materials (CPM) are widely used in dentistry and maxillofacial surgery. The presence of microbial biofilms and external infections are responsible for the failure of many procedures of dental implants and bone grafts. In an attempt to reduce the percentage of these infectious processes antibiotics have been associated with CPM improving certain conditions. For instance antibiotics administered orally or intravenously have less effect and the blood flow in relation to this is poor near implants and grafts...
November 14, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27833693/e-cigarette-blast-injury-complex-facial-fractures-and-pneumocephalus
#16
Benjamin A Archambeau, Stephanie Young, Carol Lee, Troy Pennington, Christopher Vanderbeek, Dan Miulli, John Culhane, Michael Neeki
Electronic cigarettes (also known as e-cigarettes or e-cigs) are becoming a popular method of recreational nicotine use over recent years. The growth of new brands and devices has been outpacing the FDA's ability to regulate them. As a result, some of these devices fail without warning, most likely from malfunction of the lithium-ion batteries that are in close proximity to volatile compounds within the device. Failures have occurred during both use and storage of the devices or their components. The subsequent injuries from several of these events, including full thickness burns requiring grafting and blast injuries, have been observed at Arrowhead Regional Medical Center, a regional trauma and burn center in southern California...
November 2016: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27833350/staged-ridge-split-procedure-in-the-management-of-horizontal-ridge-deficiency-utilizing-piezosurgery
#17
A B Tarun Kumar, M G Triveni, V Priyadharshini, D S Mehta
AIM AND OBJECTIVES: Edentulism is an incapacitating and irretrievable condition which can lead unswervingly to functional limitation, physical, psychological and social handicap. Maintenance of bone after tooth loss to improve retention, function, and performance of the restoration is a challenging task. The existence of a thin edentulous ridge signifies a clinical situation that is more complex for the placement of endosseous implants. Dental rehabilitation of the edentulous ridges with oral implants has become a routine treatment modality in the last few decades with consistent long term results...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27833334/mandibular-reconstruction-overview
#18
REVIEW
Batchu Pavan Kumar, V Venkatesh, K A Jeevan Kumar, B Yashwanth Yadav, S Ram Mohan
INTRODUCTION: Mandibular reconstruction has changed significantly over the years and continues to evolve with the introduction of newer technologies and techniques. PURPOSE: This article reviews the history of oromandibular reconstruction, biomechanics of mandible, summarizes the reconstruction options available for mandible with defect classification, goals in reconstruction, the various donor sites, current reconstructive options, dental rehabilitation and persistent associated problems...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27810548/immediate-transoral-allogeneic-bone-grafting-for-large-mandibular-defects-less-morbidity-more-bone-a-paradigm-in-benign-tumor-mandibular-reconstruction
#19
James C Melville, Nader N Nassari, Issa A Hanna, Jonathan W Shum, Mark E Wong, Simon Young
PURPOSE: Reconstruction of hard tissue continuity defects caused by ablative tumor surgery has been traditionally reconstructed with autogenous bone grafts or microvascular free flaps. Although results have been predictable from these 2 methods of reconstruction, the morbidity associated with bone harvest is quite serious for the patient. Predictable results have been obtained with using a combination of 100% cadaver bone, bone marrow aspirate concentrate (BMAC), and recombinant human bone morphogenic protein in immediate reconstruction for benign tumor extirpations through the extraoral approach...
October 6, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27770969/a-current-overview-of-materials-and-strategies-for-potential-use-in-maxillofacial-tissue-regeneration
#20
REVIEW
Hossein E Jazayeri, Mohammadreza Tahriri, Mehdi Razavi, Kimia Khoshroo, Farahnaz Fahimipour, Erfan Dashtimoghadam, Luis Almeida, Lobat Tayebi
Tissue regeneration is rapidly evolving to treat anomalies in the entire human body. The production of biodegradable, customizable scaffolds to achieve this clinical aim is dependent on the interdisciplinary collaboration among clinicians, bioengineers and materials scientists. While bone grafts and varying reconstructive procedures have been traditionally used for maxillofacial defects, the goal of this review is to provide insight on all materials involved in the progressing utilization of the tissue engineering approach to yield successful treatment outcomes for both hard and soft tissues...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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