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https://www.readbyqxmd.com/read/28318163/-the-influence-of-angulation-of-maxillary-anterior-teeth-on-treatment-design-of-dental-implants
#1
Liu Jin, Pu Bishuang, Xia Yulan, Wang Chengze, Wang Gang, Lan Jing
OBJECTIVE: This study aims to analyze the angulation of the maxillary anterior teeth relative to the alveolus to provide reference data for clinicians on the best conditions for implant placement in the esthetic zone. METHODS: Numerous cone beam computed tomography (CBCT) images were reviewed and screened. A total of 150 maxillary images were selected by strict adherence to the defined inclusive criteria, with 75 images each from male and female patients (between the ages of 19 and 48 years at the time of CBCT scan)...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28296982/management-of-extraoral-complications-in-a-patient-treated-with-four-zygomatic-implants
#2
Andrew Dawood, Nicholas Kalavresos
This article details the significant complications associated with treatment of a patient who underwent maxillary reconstruction based entirely on zygomatic implants. The use of zygomatic implants is becoming increasingly widespread, and treatment has been shown to be predictable and generally free of surgical complications. However, extending from the maxillary alveolus, alongside or through the maxillary antrum, toward the zygoma or orbital rim, these long implants have the potential to create a range of complications that may be more serious than those encountered with conventional dental implants...
March 15, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28290310/a-secondary-mandibular-condylar-articulation-and-collateral-effects-on-a-late-neolithic-mandible-from-bois-madame-rockshelter-in-arbre-belgium
#3
Frank L'Engle Williams, Caroline Polet
A Neolithic Belgian mandible from Bois Madame rockshelter in Arbre presents an asymmetrical morphology resulting from a secondary, or false, articulation of the right mandibular condyle. The pathological articulation produced enlarged masseter, medial pterygoid and mylohyoid musculature on the right side as well as a flattening of the right incisal alveolus curvature. The secondary condylar articulation did not lead to pronounced asymmetry of attrition on the antimeres of the dental arcade. This is the most complete mandible from this Late Neolithic collective burial dating to the beginning of the Bronze Age circa 4000 years BP...
March 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28283342/long-term-follow-up-study-of-patients-with-a-unilateral-complete-cleft-of-lip-alveolus-and-palate-following-the-utrecht-treatment-protocol-dental-arch-relationships
#4
Isabelle Francisca Petronella Maria Kappen, Gerhard Koendert Pieter Bittermann, Dirk Bitterman, Aebele Barber Mink van der Molen, William Shaw, Corstiaan Cornelis Breugem
OBJECTIVE: This study sought to evaluate long-term dental arch relationships in adults with a unilateral complete cleft lip and palate (UCLP) treated by the Utrecht protocol and to compare results with the centers from the Eurocleft study. MATERIALS AND METHODS: Retrospective analysis of UCLP patients age 17 or older, treated by two-stage palate closure at the Wilhelmina Children's Hospital, a tertiary center for cleft surgery in Utrecht, the Netherlands. Patients were invited to the clinic for a long-term evaluation...
February 6, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28230590/modified-lateral-surgical-approach-to-the-pterygopalatine-fossa
#5
Masataka Uehara, Masaaki Sasaguri, Shunji Shiiba, Kazuhiro Tominaga
Oral cancer, especially that originates in the maxillary tuberosity, buccal mucosa, and maxillary alveolus, is apt to invade the pterygopalatine fossa, where an intraoral approach is nearly impossible. There are 2 main types of extraoral approach to the pterygopalatine fossa; the anterior approach and the lateral approach. Although the lateral approach has an advantage compared with the anterior approach in terms of cosmetics, after the operation numbness of the lower lip occurs due to the sacrifice of the mental nerve...
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28210412/reconstruction-of-a-combined-maxillectomy-and-segmental-mandibulectomy-defect-in-a-seven-year-old-with-a-single-free-fibula-osteocutaneous-flap
#6
Shawn T Joseph, Krishnakumar Thankappan, Subramania Iyer
Combined upper alveolectomy and segmental mandibulectomy are complex defects. Reconstruction of these defects is usually suboptimal. We describe the case of a pediatric patient with vessel-depleted neck with recurrent vascular malformation involving the ramus and coronoid process of mandible and a previous history of maxillectomy and a reconstruction with anterolateral thigh flap. The patient underwent wide resection. The defects involving the upper alveolus and mandible were simultaneously reconstructed with a single free fibula flap...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28196170/novel-approach-to-managing-malsequenced-and-malpositioned-immediately-placed-implants-in-the-esthetic-zone
#7
Jacob K Stern, Christopher M Bingham, Brock J Pumphrey, Gerard J Chiche, Eduardo Britton
Esthetic implant therapy can be challenging in the anterior maxilla, and meticulous treatment is often required to deliver optimal esthetics. Close collaboration between surgical and prosthetic team members using the novel approach of prosthetic crown lengthening helped camouflage a shallow implant platform location, providing the proper gingival frame for esthetic restorations. This case report presents an interdisciplinary approach that included ridge augmentation, second-stage crown lengthening, and prosthetic soft tissue manipulation to address an implant placed too shallow in the alveolus of an extraction socket...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28164256/torque-differences-due-to-the-material-variation-of-the-orthodontic-appliance-a-finite-element-study
#8
Spyridon N Papageorgiou, Ludger Keilig, Vaska Vandevska-Radunovic, Theodore Eliades, Christoph Bourauel
BACKGROUND: Torque of the maxillary incisors is crucial to occlusal relationship and esthetics and can be influenced by many factors. The aim of this study was to assess the relative influence of the material of the orthodontic appliance (adhesive, bracket, ligature, and wire) on tooth displacements and developed stresses/strains after torque application. METHODS: A three-dimensional upper right central incisor with its periodontal ligament (PDL) and alveolus was modeled...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28114220/double-anterior-segmental-osteotomy-under-local-anesthesia-for-correcting-adult-protrusion-with-thin-alveolus-and-ankylosed-tooth
#9
Byung-Joon Choi, Baek-Soo Lee, Hee-Jung Lee, Ki-Ho Park, Seong-Hun Kim
BACKGROUNDS: This paper describes an additional benefit in double anterior segmental osteotomy to correct severe anterior protrusion in adult patients with extremely thin mandibular alveolus and ankylosed tooth. For the optimal anterior segmental retraction, an ankylosed posterior tooth needed surgical inclination reposition. During anterior segmental osteotomy surgery under local anesthesia, additional single tooth osteotomy was performed without challenge. METHODS: For anterior segment retraction, osteotomy cuts were made by the surgeon to define a block of bone embedding 6 mandibular anterior teeth...
January 20, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28031106/-protective-effect-of-human-amnion-epithelial-cells-through-endotracheal-instillation-against-lipopolysaccharide-induced-acute-lung-injury-in-mice
#10
Yanmin Xia, Wenchen Wang, Hong Zhang, Jiakuan Chen, Ming Wang, Zhonghu Ge, Jian Wang, Tao Jiang
Objective To investigate the therapeutic effect of human amnion epithelial cells (hAECs) through endotracheal instillation on acute lung injury (ALI) induced by lipopolysaccharide (LPS) in mice and its underlying mechanism. Methods Male C57BL/6 mice were randomly divided into normal control group, hAECs control group, LPS-induced ALI group and hAECs treatment group (n=10 each group). In the latter two groups, mice were subjected to LPS (5 mg/kg) by oral insertion, and 1 hour later, PBS (50 μL) and hAECs (1×10(7)/mL, 50 μL) were administered by oral insertion in the two groups, respectively...
January 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28028414/goodpasture-syndrome-diagnosed-one-year-and-a-half-after-the-appearance-of-the-first-symptoms-case-report
#11
Jagoda Stojkovikj, Sead Zejnel, Biljana Gerasimovska, Vesna Gerasimovska, Dragana Stojkovic, Martin Trajkovski, Irina Angelovska, Angela Debreslioska, Smilko Jovanovski
BACKGROUND: Goodpasture syndrome was originally described as an association of alveolar haemorrhage and glomerulonephritis. It occurs when the immune system attacks and destroys healthy body tissue. AIM: We are presenting a patient with a clinical picture of pulmonary haemorrhage and glomerulonephritis, which is diagnosed by renal biopsy. CASE PRESENTATION: His illness began a year and a half before being diagnosed. In that period he had occasional exacerbations...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28027239/skoog-primary-periosteoplasty-versus-secondary-alveolar-bone-grafting-in-unilateral-cleft-lip-and-alveolus-long-term-effects-on-alveolar-bone-formation-and-maxillary-growth
#12
Fatima Jabbari, Malin M Hakelius, Andreas L I Thor, Erika A Reiser, Valdemar T Skoog, Daniel J Nowinski
BACKGROUND: Clefts involving the alveolus are treated using one of two strategies: primary periosteoplasty at the time of lip repair or secondary alveolar bone grafting at mixed dentition. Most teams favor secondary alveolar bone grafting because of its high success rate, and concerns have been raised that primary periosteoplasty may interfere with maxillary growth. However, primary periosteoplasty may obviate the need for future bone grafting and is still practiced in some centers. Few studies compare the long-term outcomes of these two strategies...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28011180/influence-of-bone-invasion-on-outcomes-after-marginal-mandibulectomy-in-squamous-cell-carcinoma-of-the-oral-cavity
#13
Ivana Petrovic, Pablo H Montero, Jocelyn C Migliacci, Frank L Palmer, Ian Ganly, Snehal G Patel, Jatin P Shah
INTRODUCTION: Marginal mandibulectomy (MM) is indicated for oral cavity squamous cell carcinomas (OCSCC) that abut or minimally erode the mandible without gross invasion. Successful implementation of MM is predicated on accurate patient selection and appropriate adjuvant treatment based on well-known host and tumor characteristics. The incidence of microscopically diagnosed bone involvement in MM specimens and its implications on outcomes have however not been reported in large contemporary series...
February 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27999962/human-lung-ex-vivo-infection-models
#14
REVIEW
Andreas C Hocke, Norbert Suttorp, Stefan Hippenstiel
Pneumonia is counted among the leading causes of death worldwide. Viruses, bacteria and pathogen-related molecules interact with cells present in the human alveolus by numerous, yet poorly understood ways. Traditional cell culture models little reflect the cellular composition, matrix complexity and three-dimensional architecture of the human lung. Integrative animal models suffer from species differences, which are of particular importance for the investigation of zoonotic lung diseases. The use of cultured ex vivo infected human lung tissue may overcome some of these limitations and complement traditional models...
December 20, 2016: Cell and Tissue Research
https://www.readbyqxmd.com/read/27932407/torque-differences-according-to-tooth-morphology-and-bracket-placement-a-finite-element-study
#15
Spyridon N Papageorgiou, Iosif Sifakakis, Ludger Keilig, Raphael Patcas, Stefan Affolter, Theodore Eliades, Christoph Bourauel
INTRODUCTION: Torque of the maxillary incisors is essential in esthetics and proper occlusion, while torque expression is influenced by many factors. The aim of this finite element study was to assess the relative effect of tooth morphology, bracket prescription, and bracket positioning on tooth displacement and developed stresses/strains after torque application. METHODS: A three-dimensional upper right central incisor with its periodontal ligament (PDL) and alveolus was modelled...
December 8, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/27908574/reconstruction-of-a-post-traumatic-maxillary-ridge-using-a-radial-forearm-free-flap-and-immediate-tissue-engineering-bone-morphogenetic-protein-bone-marrow-aspirate-concentrate-and-cortical-cancellous-bone-case-report
#16
James C Melville, Ramzey Tursun, J Marshall Green, Robert E Marx
The purpose of this article is to describe reconstruction of the maxillary alveolar ridge by use of a microvascular free flap combined with an immediate tissue-engineered bone graft. This novel surgical technique involved the use of a radial forearm free flap and immediate allogeneic avascular bone graft augmented with bone morphogenetic protein and bone marrow aspirate concentrate. A poly-d,l-lactic acid mesh was used as a containment unit for the bone graft. The patient was successfully treated with a viable radial forearm free flap for soft tissue and regeneration of bone with adequate height and width, which allowed the placement of 3 dental implants with excellent arch coordination...
February 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27880906/emergence-of-a-wave-of-wnt-signaling-that-regulates-lung-alveologenesis-by-controlling-epithelial-self-renewal-and-differentiation
#17
David B Frank, Tien Peng, Jarod A Zepp, Melinda Snitow, Tiffaney L Vincent, Ian J Penkala, Zheng Cui, Michael J Herriges, Michael P Morley, Su Zhou, Min Min Lu, Edward E Morrisey
Alveologenesis is the culmination of lung development and involves the correct temporal and spatial signals to generate the delicate gas exchange interface required for respiration. Using a Wnt-signaling reporter system, we demonstrate the emergence of a Wnt-responsive alveolar epithelial cell sublineage, which arises during alveologenesis, called the axin2+ alveolar type 2 cell, or AT2(Axin2). The number of AT2(Axin2) cells increases substantially during late lung development, correlating with a wave of Wnt signaling during alveologenesis...
November 22, 2016: Cell Reports
https://www.readbyqxmd.com/read/27870344/elastic-properties-of-chimpanzee-craniofacial-cortical-bone
#18
Poorva Gharpure, Elias D Kontogiorgos, Lynne A Opperman, Callum F Ross, David S Strait, Amanda Smith, Leslie C Pryor, Qian Wang, Paul C Dechow
Relatively few assessments of cranial biomechanics formally take into account variation in the material properties of cranial cortical bone. Our aim was to characterize the elastic properties of chimpanzee craniofacial cortical bone and compare these to the elastic properties of dentate human craniofacial cortical bone. From seven cranial regions, 27 cylindrical samples were harvested from each of five chimpanzee crania. Assuming orthotropy, axes of maximum stiffness in the plane of the cortical plate were derived using modified equations of Hooke's law in a Mathcad program...
December 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27849354/the-treatment-effects-of-flaxseed-derived-secoisolariciresinol-diglycoside-and-its-metabolite-enterolactone-on-benign-prostatic-hyperplasia-involve-the-g-protein-coupled-estrogen-receptor-1
#19
Guan-Yu Ren, Chun-Yang Chen, Wei-Guo Chen, Ya Huang, Li-Qiang Qin, Li-Hua Chen
Secoisolariciresinol diglucoside (SDG), a lignan extracted from flaxseed, has been shown to suppress benign prostatic hyperplasia (BPH). However, little is known about the mechanistic basis for its anti-BPH activity. The present study showed that enterolactone (ENL), the mammalian metabolite of SDG, shared the similar binding site of G1 on a new type of membranous estrogen receptor, G-protein-coupled estrogen eceptor 1 (GPER), by docking simulations method. ENL and G1 (the specific agonist of GPER) inhibited the proliferation of human prostate stromal cell line WPMY-1 as shown by MTT assay and arrested cell cycle at the G0/G1 phase, which was displayed by propidium iodide staining following flow cytometer examination...
December 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27849104/biomechanical-comparison-of-two-ostectomy-configurations-for-partial-mandibulectomy
#20
Daniel Linden, Brad M Matz, Ramsis Farag, Harry W Boothe, D Michael Tillson, Ralph Henderson
OBJECTIVE: To determine the stiffness and load to failure of two different ostectomy configurations using canine mandibles. STUDY DESIGN: Cadaveric biomechanical assessment. ANIMALS: Paired mandibles (n = 30). METHODS: Standardized partial ostectomies were created on the alveolar surface of 30 mandibles. Samples were randomly assigned to right-angled (n = 15) or crescentic ostectomy (n = 15). Excision spanned the mesial aspect of the fourth premolar tooth to the distal aspect of first molar tooth...
November 16, 2016: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
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