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https://www.readbyqxmd.com/read/29243686/bone-augmentation-and-simultaneous-soft-tissue-thickening-with-collagen-tissue-matrix-derivate-membrane-in-an-aesthetic-area-a-case-report
#1
Algirdas Puišys, Saulius Žukauskas, Ričardas Kubilius, Eglė Vindašiūtė, Tomas Linkevičius
Aesthetic implant restoration in the anterior maxilla is a challenge for clinicians. Alveolar ridge and surrounding gingiva deficiencies aggravates implant placement in the aesthetic area. This case report describes a technique for aesthetic single implant placement with simultaneous bone grafting and soft tissue thickening. At the time of implant surgery, allogenic (Maxgraft, Botiss Biomaterials, Germany) and xenogenic bone substitute (Cerabone, Botiss Biomaterials, Germany) was used for bone grafting, soft tissues were augmented simultaneously with collagen tissue matrix derivate membrane (Mucoderm, Botiss Biomaterials, Germany)...
2017: Stomatologija
https://www.readbyqxmd.com/read/29208785/use-of-a-partial-thickness-flap-for-guided-bone-regeneration-in-the-upper-jaw
#2
Gianluca Porcaro, Alberto Busa, Edoardo Bianco, Gianluigi Caccianiga, Marcello Maddalone
INTRODUCTION: Guided bone regeneration (GBR) aims to restore adequate bone volume for the placement of implants in an ideal location. In this article, we analyze different surgical techniques for tissue management during GBR and a modified partial-thickness surgical approach. MATERIALS AND METHODS: In a year's time span, five patients were enrolled in the study: Four women and one man (aged 44-59 years). In four patients, a GBR with simultaneous implant placement was adopted, whereas in another patient, a delayed implant placement was done...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29182630/connectivity-and-systemic-resilience-of-the-great-barrier-reef
#3
Karlo Hock, Nicholas H Wolff, Juan C Ortiz, Scott A Condie, Kenneth R N Anthony, Paul G Blackwell, Peter J Mumby
Australia's iconic Great Barrier Reef (GBR) continues to suffer from repeated impacts of cyclones, coral bleaching, and outbreaks of the coral-eating crown-of-thorns starfish (COTS), losing much of its coral cover in the process. This raises the question of the ecosystem's systemic resilience and its ability to rebound after large-scale population loss. Here, we reveal that around 100 reefs of the GBR, or around 3%, have the ideal properties to facilitate recovery of disturbed areas, thereby imparting a level of systemic resilience and aiding its continued recovery...
November 2017: PLoS Biology
https://www.readbyqxmd.com/read/29158985/coral-associated-viral-communities-show-high-levels-of-diversity-and-host-auxiliary-functions
#4
Karen D Weynberg, Patrick W Laffy, Elisha M Wood-Charlson, Dmitrij Turaev, Thomas Rattei, Nicole S Webster, Madeleine J H van Oppen
Stony corals (Scleractinia) are marine invertebrates that form the foundation and framework upon which tropical reefs are built. The coral animal associates with a diverse microbiome comprised of dinoflagellate algae and other protists, bacteria, archaea, fungi and viruses. Using a metagenomics approach, we analysed the DNA and RNA viral assemblages of seven coral species from the central Great Barrier Reef (GBR), demonstrating that tailed bacteriophages of the Caudovirales dominate across all species examined, and ssDNA viruses, notably the Microviridae, are also prevalent...
2017: PeerJ
https://www.readbyqxmd.com/read/29155411/porosity-effect-of-3d-printed-polycaprolactone-membranes-on-calvarial-defect-model-for-guided-bone-regeneration
#5
Jin-Hyung Shim, Jae-Hyang Jeong, Joo-Yun Won, Ji-Hyeon Bae, Geunseon Ahn, Hojun Jeon, Won-Soo Yun, Eun-Bin Bae, Jae-Won Choi, So-Hyoun Lee, Chang-Mo Jeong, Hoyun Chung, Jung-Bo Huh
The appropriate porosity and pore size of barrier membrane were associated with the transportation of biomolecules required for new bone formation and angiogenesis. In this study, we fabricated 3D-printed resorbable polycaprolactone (PCL) membranes with different porosities (30%, 50%, and 70%) to evaluate the effective pore size for guided bone regeneration (GBR) membranes. To analyze mechanical properties and cytocompatibility, PCL membranes prepared using extrusion-based 3D printing technology were compared in dry and wet conditions and tested in vitro...
November 20, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29154676/effects-of-bone-regeneration-materials-and-tooth-movement-timing-on-canine-experimental-orthodontic-treatment
#6
Ferdinand Mabula Machibya, Yiyuan Zhuang, Weizhong Guo, Dongdong You, Shan Lin, Dong Wu, Jiang Chen
OBJECTIVES: To evaluate the effects of bone regeneration materials and orthodontic tooth movement (OTM) timing on tooth movement through alveolar bone defects treated with guided bone regeneration (GBR) utilizing xenografts (Bio-Oss) and alloplast (β-TCP). MATERIALS AND METHODS: Twenty-four standard alveolar bone defects in six male beagle dogs were treated by GBR using either Bio-Oss or β-TCP (experimental), whereas the control defects were left empty. The defects were further grouped into early or late subgroups, depending on OTM timing after GBR (ie 1 month or 2 months, respectively)...
November 20, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/29145050/can-farmers-mitigate-environmental-impacts-through-combined-production-of-food-fuel-and-feed-a-consequential-life-cycle-assessment-of-integrated-mixed-crop-livestock-system-with-a-green-biorefinery
#7
Ranjan Parajuli, Tommy Dalgaard, Morten Birkved
This study evaluates environmental impacts of an integrated mixed crop-livestock system with a green biorefinery (GBR). System integration included production of feed crops and green biomasses (Sys-I) to meet the demand of a livestock system (Sys-III) and to process green biomasses in a GBR system (Sys-II). Processing of grass-clover to produce feed protein was considered in Sys-II, particularly to substitute the imported soybean meal. Waste generated from the livestock and GBR systems were considered for the conversion to biomethane (Sys-IV)...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29140389/influence-of-rhbmp-2-on-guided-bone-regeneration-for-placement-and-functional-loading-of-dental-implants-a-radiographic-and-histologic-study-in-dogs
#8
Heithem Ben Amara, Jung-Won Lee, Jung-Ju Kim, Yun-Mi Kang, Eun-Jung Kang, Ki-Tae Koo
PURPOSE: Evidence on the outcomes of functional loading placed in recombinant human bone morphogenetic protein 2 (rhBMP-2)/acellular collagen sponge (ACS)-induced bone is lacking. The aim of this study was to verify whether guided bone regeneration (GBR) with rhBMP-2/ACS enhances regeneration of missing bone and osseointegration of dental implants subject to functional loading. MATERIALS AND METHODS: Two bilateral standardized large saddle-type defects (≈10 × 10 × 6 mm) were surgically created in each mandible of seven beagle dogs 2 months after tooth extraction...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29126771/bmp-2-plasmid-dna-loaded-chitosan-films-a-new-strategy-for-bone-engineering
#9
Juan Li, Jun Lin, Wenke Yu, Xiaojia Song, Qiaoling Hu, Jing-Hong Xu, Huiming Wang, Christian Mehl
OBJECTIVES: Bone defects are common in every area of medicine and remain a clinical challenge. Tissue engineering has led to promising new strategies in accelerating bone repair. Bone morphogenetic proteins (BMPs) play crucial roles in bone regeneration, but are required in supra-physiological doses, which are expensive and produce severe side effects. METHODS: To address these issues, we prepared BMP-2 plasmid DNA-loaded chitosan films, and examined their effects on mouse osteoblast-like MC3T3-E1 cell morphology, proliferation, and runt-related transcription factor 2 (RUNX2) expression...
October 14, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29125136/mechanically-stable-surface-hydrophobilized-chitosan-nanofibrous-barrier-membranes-for-guided-bone-regeneration
#10
Chaoxi Wu, Hengjie Su, Anastasios Karydis, Kenneth M Anderson, Najib Ghadri, Shunqing Tang, Yifei Wang, Joel D Bumgardner
The use of chitosan based nanofiber membranes in guided bone regeneration (GBR) is limited by its uncontrolled swelling and mechanical instability in aqueous environments. This paper describes the significantly improved stability and properties of surface butyrylated chitosan nanofiber (BCSNF) membranes that greatly enhance their potential in GBR. The BCSNF membranes exhibited an overall degree of substitution of 1.61, an average diameter of 99.3 ± 33.7 nm, and a 75% decrease in swelling with an approximate doubling in suture pull out strengths as compared to unmodified fibers in aqueous environment...
November 10, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29117191/detecting-conservation-benefits-of-marine-reserves-on-remote-reefs-of-the-northern-gbr
#11
Carolina Castro-Sanguino, Yves-Marie Bozec, Alexandra Dempsey, Badi R Samaniego, Katie Lubarsky, Stefan Andrews, Valeriya Komyakova, Juan Carlos Ortiz, William D Robbins, Philip G Renaud, Peter J Mumby
The Great Barrier Reef Marine Park (GBRMP) is the largest network of marine reserves in the world, yet little is known of the efficacy of no-fishing zones in the relatively lightly-exploited remote parts of the system (i.e., northern regions). Here, we find that the detection of reserve effects is challenging and that heterogeneity in benthic habitat composition, specifically branching coral cover, is one of the strongest driving forces of fish assemblages. As expected, the biomass of targeted fish species was generally greater (up to 5-fold) in no-take zones than in fished zones, but we found no differences between the two forms of no-take zone: 'no-take' versus 'no-entry'...
2017: PloS One
https://www.readbyqxmd.com/read/29069420/fecal-bacterial-communities-of-wild-captured-and-stranded-green-turtles-chelonia-mydas-on-the-great-barrier-reef
#12
Shamim Shamim, Thomas B Waltzek, Roger Huerlimann, Ellen Ariel
Green turtles ( Chelonia mydas ) are endangered marine herbivores that break down food particles, primarily sea grasses, through microbial fermentation. However, the microbial community and its role in health and disease are still largely unexplored. In this study, we investigated and compared the fecal bacterial communities of eight wild-captured green turtles to four stranded turtles in the central Great Barrier Reef (GBR) regions that include Bowen and Townsville. We used high-throughput sequencing analysis targeting the hypervariable V1- V3 regions of the bacterial 16S rRNA gene...
October 23, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29068426/preparation-and-characterization-of-resorbable-bacterial-cellulose-membranes-treated-by-electron-beam-irradiation-for-guided-bone-regeneration
#13
Sung-Jun An, So-Hyoun Lee, Jung-Bo Huh, Sung In Jeong, Jong-Seok Park, Hui-Jeong Gwon, Eun-Sook Kang, Chang-Mo Jeong, Youn-Mook Lim
Bacterial cellulose (BC) is an excellent biomaterial with many medical applications. In this study, resorbable BC membranes were prepared for guided bone regeneration (GBR) using an irradiation technique for applications in the dental field. Electron beam irradiation (EI) increases biodegradation by severing the glucose bonds of BC. BC membranes irradiated at 100 kGy or 300 kGy were used to determine optimal electron beam doses. Electron beam irradiated BC membranes (EI-BCMs) were evaluated by scanning electron microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermal gravimetric analysis (TGA), and using wet tensile strength measurements...
October 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29065477/treatment-of-severely-resorbed-maxilla-due-to-peri-implantitis-by-guided-bone-regeneration-using-a-customized-allogenic-bone-block-a-case-report
#14
Oliver Blume, Lisa Hoffmann, Phil Donkiewicz, Sabine Wenisch, Michael Back, Jörg Franke, Reinhard Schnettler, Mike Barbeck
The objective of this case report is to introduce a customized CAD/CAM freeze-dried bone allograft (FDBA) block for its use in Guided Bone Regeneration (GBR) procedures for severely deficient maxillary bones. Additionally, a special newly developed remote incision technique is presented to avoid wound dehiscence. The results show optimal integration behavior of the FDBA block after six months and the formation of new vital bone. Thus, the results of the present case report confirm the use of the customized CAD/CAM bone block for augmentation of complex defects in the maxillary aesthetic zone as a successful treatment concept...
October 21, 2017: Materials
https://www.readbyqxmd.com/read/29038630/effect-of-alveolar-segmental-sandwich-osteotomy-on-alveolar-height-a-preliminary-study
#15
Karan S Mehta, Kavitha Prasad, Vibha Shetty, Krishnappa Ranganath, R M Lalitha, Jayashree Dexith, Sejal K Munoyath, Vineeth Kumar
PURPOSE: Bone loss following extraction is maximum in horizontal dimension. Height is also reduced which is pronounced on the buccal aspect. Various surgical procedures are available to correct the bone volume viz. GBR, onlay bone grafting, alveolar distraction and sandwich osteotomy. Sandwich osteotomy has been found to increase the vertical alveolar bone height successfully. OBJECTIVES: The objective of the study was to assess the effect of alveolar segmental sandwich osteotomy on alveolar height and crestal width...
December 2017: Journal of Maxillofacial and Oral Surgery
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
#16
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/29023623/vertical-guided-bone-regeneration-for-a-single-missing-tooth-span-with-titanium-reinforced-d-ptfe-membranes-clinical-considerations-and-observations-of-10-consecutive-cases-with-up-to-36-months-follow-up
#17
Ran Herzberg
Vertical guided bone regeneration (GBR) using titanium-reinforced polytetrafluoroethylene (PTFE) membranes is a well-established technique and is considered technique sensitive. When using PTFE membranes, complications usually arise in the crestal incision or next to the neighboring tooth of the treated span. Most studies available describe either distal free end or multiple missing teeth span situations. Treating a single missing tooth span combines the challenge of two neighboring teeth and a smaller flap, which is more difficult to adapt to the augmented environment...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29018818/the-mechanical-properties-and-biometrical-effect-of-3d-preformed-titanium-membrane-for-guided-bone-regeneration-on-alveolar-bone-defect
#18
So-Hyoun Lee, Jong-Hoon Moon, Chang-Mo Jeong, Eun-Bin Bae, Chung-Eun Park, Gye-Rok Jeon, Jin-Ju Lee, Young-Chan Jeon, Jung-Bo Huh
The purpose of this study is to evaluate the effect of three-dimensional preformed titanium membrane (3D-PFTM) to enhance mechanical properties and ability of bone regeneration on the peri-implant bone defect. 3D-PFTMs by new mechanically compressive molding technology and manually shaped- (MS-) PFTMs by hand manipulation were applied in artificial peri-implant bone defect model for static compressive load test and cyclic fatigue load test. In 12 implants installed in the mandibular of three beagle dogs, six 3D-PFTMs, and six collagen membranes (CM) randomly were applied to 2...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28990654/analysis-of-volatiles-in-brown-rice-germinated-brown-rice-and-selenized-germinated-brown-rice-during-storage-at-different-vacuum-levels
#19
Kunlun Liu, Shuang Zhao, Yang Li, Fusheng Chen
BACKGROUND: The quality of nutritionally enhanced foods can be determined by evaluating changes in the volatile compounds produced in these foods over time. In this work, selenium-enriched germinated brown rice (Se-GBR), germinated brown rice (GBR), and brown rice (BR) stored under 90% relative humidity, 38°C, and various vacuum levels were investigated. The relative abundance and differences of volatile compounds in Se-GBR, GBR, and BR over various storage periods were detected. The correlation of volatile compound abundance with vacuum level and storage time was analyzed using principal component analysis (PCA)...
October 9, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28980059/avoiding-implementation-failure-in-catchment-landscapes-a-case-study-in-governance-of-the-great-barrier-reef
#20
Allan P Dale, Karen Vella, Margaret Gooch, Ruth Potts, Robert L Pressey, Jon Brodie, Rachel Eberhard
Water quality outcomes affecting Australia's Great Barrier Reef (GBR) are governed by multi-level and multi-party decision-making that influences forested and agricultural landscapes. With international concern about the GBR's declining ecological health, this paper identifies and focuses on implementation failure (primarily at catchment scale) as a systemic risk within the overall GBR governance system. There has been limited integrated analysis of the full suite of governance subdomains that often envelop defined policies, programs and delivery activities that influence water quality in the GBR...
October 4, 2017: Environmental Management
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