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Ridge preservation

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https://www.readbyqxmd.com/read/28905475/evaluation-of-volumetric-dimensional-changes-in-posterior-extraction-sites-with-and-without-arp-using-a-novel-imaging-device
#1
Carolina Sbordone, Paolo Toti, Ranieri Martuscelli, Franco Guidetti, Massimo Porzio, Ludovico Sbordone
BACKGROUND: Alveolar ridge volume loss may be minimized when postextraction sockets are filled by bone substitutes. PURPOSE: The aim of the study was to measure the effect of alveolar ridge preservation (ARP) in maintaining the external contour of the ridge after fresh socket grafting with or without particulate anorganic bovine bone mineral (BBM) and resorbable barrier covering. MATERIALS AND METHODS: In the present controlled study, patients subjected to single-tooth extraction were allocated to 2 groups: postextraction sockets grafted with bovine bone mineral (bbm), and naturally healing sockets (nat)...
September 14, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28895779/combination-of-bone-graft-and-resorbable-membrane-for-alveolar-ridge-preservation-a-systematic-review-meta-analysis-and-trial-sequential-analysis
#2
Giuseppe Troiano, Khrystyna Zhurakivska, Lorenzo Lo Muzio, Luigi Laino, Marco Cicciù, Lucio Lo Russo
INTRODUCTION: Alveolar ridge preservation (ARP) techniques are aimed to reduce the resorption after tooth extraction. The combination of a graft material covered with a resorbable membrane represent one of the most common strategies performed in the clinical practice. The aim of this systematic review was to analyse evidence regarding potential benefits of ARP procedures performed with allogenic/xenogenic grafts in combination with a resorbable membrane coverage in comparison to a spontaneous healing...
September 12, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28894668/mucosal-perfusion-preservation-by-a-novel-shapeable-tissue-expander-for-oral-reconstruction
#3
Daria Barwinska, John Garner, Darrell D Davidson, Todd G Cook, George J Eckert, Sunil S Tholpady, Keith L March, Kinam Park, Clark T Barco
BACKGROUND: There are few methods for expanding oral mucosa, and these often cause complications such as tissue necrosis and expander eruption. This study examines mucosal blood perfusion following insertion of a novel shapeable hydrogel tissue expander (HTE). The canine model used subgingival insertion of HTE following tooth extraction and alveolar bone reduction. The primary goal of this study was to gain understanding of epithelial perfusion and reparative responses of gingival mucosa during HTE expansion...
August 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28885317/ridge-preservation-after-maxillary-third-molar-extraction-using-30-porosity-plga-ha-%C3%AE-tcp-scaffolds-with-and-without-simvastatin-a-pilot-randomized-controlled-clinical-trial
#4
Miguel Noronha Oliveira, Levy Hermes Rau, Aline Marodin, Márcio Corrêa, Letícia Ruhland Corrêa, Aguedo Aragones, Ricardo de Souza Magini
OBJECTIVE: To evaluate clinically and radiographically, in humans, the healing of maxillary third molars postextraction sockets after application of different ridge preservation techniques 3 months after tooth extraction. MATERIALS AND METHODS: Twenty-six sockets (13 patients) were randomly assigned to 4 treatment modalities: deproteinized bovine bone mineral with 10% collagen (DBBM-C), poly(D,L-lactide-co-glycolide) with hydroxyapatite/β-TCP scaffold (PLGA/HA), PLGA/HA/β-TCP with 2...
September 6, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28862584/a-root-volume-study-of-the-adult-dentition-for-ridge-preservation-purposes
#5
John Thousand, Joseph Datar, Kerri Font, Charles A Powell
Ridge preservation has become a common practice to preserve the remaining alveolar bone volume after tooth extraction. The most common volume of graft material in commercially available vials is between 0.50 and 1.00 mL. The clinician must estimate how much grafting material is needed after extracting a tooth. The aim of this study is to provide the clinician with a volumetric guide for selection of graft material for ridge preservation after tooth extraction. Fifteen sets of permanent teeth, each representing a full adult dentition excluding the third molars, were selected at random from a collection of extracted teeth...
September 2017: General Dentistry
https://www.readbyqxmd.com/read/28862469/clinical-applications-of-an-atraumatic-osteotome
#6
Benjamin A Baptist
Osteotomes have long been used in the formation of osteotomies for the placement of dental implants. Their ability to manipulate and compress existing bone without generating heat makes them particularly useful for expanding narrow ridges, elevating delicate sinus membrane, and increasing relative bone density around the osteotomy. Common concerns with these devices include the traumatic force communicated to the patient during use and difficulty controlling force vectors. A new type of osteotome has been developed that is designed to enable the clinician to eliminate the concerns found with traditional osteotomes yet it preserves the best qualities and functionality of this class of device...
September 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28861284/alveolar-socket-preservation-with-demineralised-bovine-bone-mineral-and-a-collagen-matrix
#7
Carlo Maiorana, Pier Paolo Poli, Matteo Deflorian, Tiziano Testori, Federico Mandelli, Heiner Nagursky, Raffaele Vinci
PURPOSE: The aim of the present study was to evaluate the healing of post-extraction sockets following alveolar ridge preservation clinically, radiologically, and histologically. METHODS: Overall, 7 extraction sockets in 7 patients were grafted with demineralised bovine bone mineral and covered with a porcine-derived non-crosslinked collagen matrix (CM). Soft tissue healing was clinically evaluated on the basis of a specific healing index. Horizontal and vertical ridge dimensional changes were assessed clinically and radiographically at baseline and 6 months after implant placement...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28859828/liver-vessel-segmentation-and-identification-based-on-oriented-flux-symmetry-and-graph-cuts
#8
Ye-Zhan Zeng, Yu-Qian Zhao, Ping Tang, Miao Liao, Yi-Xiong Liang, Sheng-Hui Liao, Bei-Ji Zou
BACKGROUND AND OBJECTIVE: Accurate segmentation of liver vessels from abdominal computer tomography angiography (CTA) volume is very important for liver-vessel analysis and living-related liver transplants. This paper presents a novel liver-vessel segmentation and identification method. METHODS: Firstly, an anisotropic diffusion filter is used to smooth noise while preserving vessel boundaries. Then, based on the gradient symmetry and antisymmetry pattern of vessel structures, optimal oriented flux (OOF) and oriented flux antisymmetry (OFA) measures are respectively applied to detect liver vessels and their boundaries, and further to slenderize vessels...
October 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28854288/use-of-bone-morphogenetic-protein-2-in-molar-extraction-sockets-for-immediate-implant-placement-a-prospective-case-series
#9
Karl J Zeren
This prospective case series enrolled consecutively qualifying patients that required immediate dental implant placement in large, uncontained, fresh molar extraction sites using recombinant human bone morphogentic protein-2/absorbable collagen sponge (rhBMP-2/ACS) combined with mineralized bone allograft. A total of 11 patients with 15 extraction sites missing bony walls were enrolled for treatment in this prospective case series. The clinical and radiographic effectiveness of rhBMP-2/ACS combined with mineralized bone allograft supported healing of immediately placed implants...
August 30, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28839405/comparative-alveolar-ridge-preservation-using-allogenous-tooth-graft-versus-free-dried-bone-allograft-a-randomized-controlled-prospective-clinical-pilot-study
#10
Chaitanya Pradeep Joshi, Cynthia Bernardo D'Lima, Urmila Chandrashekhar Samat, Prerna Ashok Karde, Agraja Ganpat Patil, Nitin Hemchandra Dani
BACKGROUND: For the first time in India, allografts from human extracted teeth were prepared. A randomized, prospective, clinicoradiographical, histological study was conducted to evaluate their efficacy in comparison with freeze-dried bone allograft (FDBA) in alveolar ridge preservation. MATERIALS AND METHODS: Graft preparation: with written consent, teeth were collected from three donors (full mouth extraction cases). Once donors' serums were tested negative for HIV, HBV, HCV, and Venereal disease research laboratory (VDRL), mineralized whole tooth allograft (WTA) and dentin allograft (DA) were prepared using the standard protocol of Tissue Bank at Tata Memorial Hospital, Mumbai, India...
April 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28817739/three-dimensional-volumetric-changes-in-severely-resorbed-alveolar-sockets-after-ridge-augmentation-with-bovine-derived-xenograft-and-resorbable-barrier-a-preliminary-study-on-cbct-imaging
#11
Valeria Manavella, Federica Romano, Lisa Corano, Cristina Bignardi, Mario Aimetti
PURPOSE: The primary aim of the study was to describe a novel technique to evaluate volumetric hard tissue dimensional changes after ridge augmentation procedures. The secondary aim was to apply this newly developed measuring method to compromised alveolar sockets grafted with a slowly resorbing biomaterial covered with a collagen membrane. MATERIALS AND METHODS: Eleven patients (6 men and 5 women, mean age 52.7 ± 8.3 years) requiring extraction of one hopeless tooth for severe periodontitis in the maxillary anterior area were consecutively treated with a ridge augmentation procedure...
August 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28817133/identification-and-efficacy-ranking-of-allograft-and-xenograft-for-extraction-and-ridge-preservation-procedures
#12
Zuhair S Natto, Wael Yaghmoor, Raveendhara R Bannuru, Myron Nevins
The objective of this network meta-analysis was to identify and rank different ridge preservation procedures using allograft, xenograft, or extraction only by dimensional changes in ridge width and height after tooth extraction. Electronic and hand searches of several databases were performed in September 2016 to identify randomized controlled trials on extraction and ridge preservation with 3 to 7 months of follow-up. Eight studies were included in the network meta-analysis. The total number of teeth included in these trials was 466, which were randomly assigned to treatment groups...
September 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28806380/formation-of-the-philtral-column-using-a-dermal-graft-in-secondary-unilateral-cleft-lip
#13
Jeenam Kim, Jongok Park, Ki-Il Uhm, Donghyeok Shin, Hyungon Choi
INTRODUCTION: The philtral column has an important aesthetic significance and is especially important in patients with cleft lip. If the integrity of the philtrum cannot be preserved in patients of unilateral clefts, these patients will have profound abnormalities in their facial musculature. The purpose of this study was to analyze the effects of dermal grafting on the philtral column in patients with a unilateral alveolar cleft. METHODS: The authors retrospectively studied dermal grafts performed in Konkuk University Medical Center between January 2009 and January 2015...
August 10, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28802762/clinical-application-of-autogenous-partially-demineralized-dentin-matrix-prepared-immediately-after-extraction-for-alveolar-bone-regeneration-in-implant-dentistry-a-pilot-study
#14
T Minamizato, T Koga, Takashi I, Y Nakatani, M Umebayashi, Y Sumita, T Ikeda, I Asahina
The aim of this study was to examine the efficacy and safety of autogenous partially demineralized dentin matrix (APDDM) prepared onsite, for clinical application in bone regeneration procedures related to implant dentistry, including socket preservation, alveolar ridge augmentation, and maxillary sinus floor augmentation. In this study, 16 patients underwent dental implant placement using APDDM transplantation. There were no systemic or local complications (including surgical site infection) in any of the cases, and oral rehabilitation using dental implants was successful in all cases for at least 2 years after attachment of the suprastructure...
August 9, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28764533/visualizing-dispersive-features-in-2d-image-via-minimum-gradient-method
#15
Yu He, Yan Wang, Zhi-Xun Shen
We developed a minimum gradient based method to track ridge features in a 2D image plot, which is a typical data representation in many momentum resolved spectroscopy experiments. Through both analytic formulation and numerical simulation, we compare this new method with existing DC (distribution curve) based and higher order derivative based analyses. We find that the new method has good noise resilience and enhanced contrast especially for weak intensity features and meanwhile preserves the quantitative local maxima information from the raw image...
July 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28758435/-treating-tissue-defects-following-tooth-removal-three-case-reports
#16
Rita Marton, Anna Martin, Szandra Lemperger, Péter Windisch
Following tooth removal, three dimensional hard- and soft-tissue loss take place. Spontaneous healing makes the defect more severe and results in collapsing tissues. Implant placement is not feasible. In the aestethic zone even fixed partial dentures will not deliver the expected result. Our aim was to demonstrate that only ridge preservation enables implant placement and also provides excellent aestetic result even at frontal areas. CBCT was made before and 6-8 months after ridge preservation. Vertical and socket area measurements were carried out and compared in pre-, and postoperative images...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28747477/oyster-reefs-as-carbon-sources-and-sinks
#17
F Joel Fodrie, Antonio B Rodriguez, Rachel K Gittman, Jonathan H Grabowski, Niels L Lindquist, Charles H Peterson, Michael F Piehler, Justin T Ridge
Carbon burial is increasingly valued as a service provided by threatened vegetated coastal habitats. Similarly, shellfish reefs contain significant pools of carbon and are globally endangered, yet considerable uncertainty remains regarding shellfish reefs' role as sources (+) or sinks (-) of atmospheric CO2 While CO2 release is a by-product of carbonate shell production (then burial), shellfish also facilitate atmospheric-CO2 drawdown via filtration and rapid biodeposition of carbon-fixing primary producers...
July 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28745002/dimensional-changes-of-the-maxillary-sinus-following-tooth-extraction-in-the-posterior-maxilla-with-and-without-socket-preservation
#18
Itay Levi, Michal Halperin-Sternfeld, Jacob Horwitz, Hadar Zigdon-Giladi, Eli E Machtei
BACKGROUND: Sinus pneumatization is commonly observed following tooth extraction in the posterior maxilla, however, the role of this pneumatization in the overall changes in the vertical bone height is not clear. PURPOSE: To compare dimensional changes in the alveolar ridge and corresponding maxillary sinus following tooth extraction, with or without socket preservation. MATERIALS AND METHODS: 42 patients underwent tooth extraction (control group) and 21 patients underwent tooth extraction with socket preservation using DBBM (study group)...
July 26, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28727462/tridimensional-reconstruction-of-a-complex-iatrogenic-defect-using-orthodontic-forced-eruption-and-minimally-invasive-bone-grafting
#19
Ernesto A Lee
As the use of dental implants has become more common, so has the frequency of complications and unforeseen outcomes. This article describes the treatment of a complex iatrogenic defect secondary to a failed implant (No. 7) and multiple bone-grafting attempts in the maxillary anterior region. The patient's revealing smile line and high-risk circumstances demanded the use of an interdisciplinary treatment approach with high potential for predictable esthetic results. Forced eruption was performed to restore the alveolar height deficit and develop the compromised hard and soft tissues around teeth Nos...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727205/drivers-of-woody-canopy-water-content-responses-to-drought-in-a-mediterranean-type-ecosystem
#20
Tarin Paz-Kagan, Gregory P Asner
Severe droughts increase physiological stress in woody plant species, which can lead to mortality, fundamentally altering the composition, structure, and biogeography of forests in many regions. Little is known, however, about the factors determining the physiological response of woody plants to drought at landscape scales. Our objective was to understand woody plant species responses to ongoing changes in climate, using remotely sensed canopy water content (CWC) as an indicator of plant physiological and phenological status...
July 20, 2017: Ecological Applications: a Publication of the Ecological Society of America
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