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Ridge preservation

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https://www.readbyqxmd.com/read/28207942/effect-of-ridge-preservation-for-early-implant-placement-is-there-a-need-to-remove-the-biomaterial
#1
Daniel S Thoma, Nadja Naenni, Goran I Benic, Fernando Munoz, Christoph H F Hämmerle, Ronald E Jung
AIM: to assess i) bone regeneration around implants placed early in sites with or without ridge preservation and i) if the bone substitute material (DBBM-C) has to be removed at implant placement MATERIALS AND METHODS: In eight beagle dogs, three sites were randomly assigned to ridge preservation (DBBM-C plus collagen matrix (CMX)) (two sites; RP) or spontaneous healing (1 site; SH). Four weeks later, in one of the RP sites, dental implants were placed without removing the DBBM-C (RP1), whereas in RP2 and SH sites all non-integrated DBBM-C and/or granulation tissue was removed before implant placement and concomitant GBR...
February 16, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28203026/-histomorphometric-evaluation-of-ridge-preservation-after-molar-tooth-extraction
#2
Y L Zhan, W J Hu, T Xu, M Zhen, R F Lu
OBJECTIVE: To evaluate bone formation in human extraction sockets with absorbed surrounding walls augmented with Bio-Oss and Bio-Gide after a 6-month healing period by histologic and histomorphometric analyses. METHODS: Six fresh molar tooth extraction sockets in 6 patients who required periodontally compromised moral tooth extraction were included in this study. The six fresh extraction sockets were grafted with Bio-Oss particle covered with Bio-Gide. The 2.8 mm×6...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28196172/alveolar-ridge-preservation-with-nc-ha-and-d-ptfe-membrane-a-clinical-histologic-and-histomorphometric-study
#3
Domenica Laurito, Marco Lollobrigida, Francesca Gianno, Sandro Bosco, Luca Lamazza, Alberto De Biase
Alveolar ridge preservation has become a very common procedure following tooth extraction. This study presents a clinical, histologic, and histomorphometric analysis of postextraction bone changes using nanocrystalline hydroxyapatite (nc-HA) and exposed high-density polytetrafluoroethylene (d-PTFE) membrane. A total of 10 extraction sockets were treated. Clinical measurements were taken after tooth extraction with a customized acrylic stent to ensure the same measurement points. At 6 months, clinical measurements were repeated and bone specimens taken...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28185397/the-clinical-effectiveness-of-alveolar-ridge-preservation-in-the-maxillary-anterior-esthetic-zone-a-retrospective-study
#4
Albert Ming Hsien Lee, Choy Yoke Poon
PURPOSE: The primary aim was to investigate whether ridge preservation done at extraction will preserve at least 6 mm of alveolar ridge width in the anterior maxillary zone and obviate the need for secondary bone augmentation during implant insertion. METHODS: Sixty patients with single implants placed in the anterior maxillary zone were classified in two groups. In the test group, 40 patients underwent ridge preservation at the time of tooth extraction, while the remaining 20 patients in the control group did not...
February 10, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28166539/primordial-helium-entrained-by-the-hottest-mantle-plumes
#5
M G Jackson, J G Konter, T W Becker
Helium isotopes provide an important tool for tracing early-Earth, primordial reservoirs that have survived in the planet's interior. Volcanic hotspot lavas, like those erupted at Hawaii and Iceland, can host rare, high (3)He/(4)He isotopic ratios (up to 50 times the present atmospheric ratio, Ra) compared to the lower (3)He/(4)He ratios identified in mid-ocean-ridge basalts that form by melting the upper mantle (about 8Ra; ref. 5). A long-standing hypothesis maintains that the high-(3)He/(4)He domain resides in the deep mantle, beneath the upper mantle sampled by mid-ocean-ridge basalts, and that buoyantly upwelling plumes from the deep mantle transport high-(3)He/(4)He material to the shallow mantle beneath plume-fed hotspots...
February 6, 2017: Nature
https://www.readbyqxmd.com/read/28144945/latent-fingermark-aging-patterns-part-iii-discontinuity-index-as-one-indicator-of-degradation
#6
Josep De Alcaraz-Fossoul, Carme Barrot Feixat, Clara Carreras-Marin, Jack Tasker, Sara C Zapico, Manel Gené Badia
This article is the third in a series of reports exploring quantifiable visual parameters of the aging process of latent fingermarks. On this occasion, research is focused on the occurrence of ridge discontinuities (i.e. breakages) as a function of time. Experiment variables included type of secretion (eccrine and sebaceous), substrate (glass and plastic), and exposure to natural light (dark, shade, and direct light) over a 6 months period. Fingermarks were sequentially visualized with titanium dioxide powder, photographed, and the number of naturally occurring ridge discontinuities subsequently evaluated...
February 1, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28113531/cross-view-retrieval-via-probability-based-semantics-preserving-hashing
#7
Zijia Lin, Guiguang Ding, Jungong Han, Jianmin Wang
For efficiently retrieving nearest neighbors from large-scale multiview data, recently hashing methods are widely investigated, which can substantially improve query speeds. In this paper, we propose an effective probability-based semantics-preserving hashing (SePH) method to tackle the problem of cross-view retrieval. Considering the semantic consistency between views, SePH generates one unified hash code for all observed views of any instance. For training, SePH first transforms the given semantic affinities of training data into a probability distribution, and aims to approximate it with another one in Hamming space, via minimizing their Kullback-Leibler divergence...
September 29, 2016: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28113489/spectral-spatial-shared-linear-regression-for-hyperspectral-image-classification
#8
Haoliang Yuan, Yuan Yan Tang
Classification of the pixels in hyperspectral image (HSI) is an important task and has been popularly applied in many practical applications. Its major challenge is the high-dimensional small-sized problem. To deal with this problem, lots of subspace learning (SL) methods are developed to reduce the dimension of the pixels while preserving the important discriminant information. Motivated by ridge linear regression (RLR) framework for SL, we propose a spectral-spatial shared linear regression method (SSSLR) for extracting the feature representation...
March 8, 2016: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28111211/the-drawer-like-resection-and-reconstruction-with-titanium-mesh-a-novel-surgical-technique-for-treatment-of-giant-ossifying-fibroma-in-the-maxilla
#9
Mingming Lv, Jun Li, Yi Shen, Liang Wang, Jian Sun
PURPOSE: The aim of this article is to introduce a new surgical method for the treatment of ossifying fibroma (OF) in the maxilla with dislocation of the eyeball and to evaluate the postoperative outcomes and prognosis. PATIENTS AND METHODS: Cases of maxillary OF treated with "drawer-like" resection from 2014 to 2015 were reviewed. The surgical procedure consisted of total removal of the orbital floor and most of the maxilla with preservation of the alveolar ridge immediately followed by reconstruction with titanium mesh...
December 29, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28105590/case-report-on-managing-incomplete-bone-formation-after-bilateral-sinus-augmentation-using-a-palatal-approach-and-a-dilating-balloon-technique
#10
Tobias K Boehm
BACKGROUND: Patients with resorbed edentulous alveolar ridges in the posterior maxilla often require lateral window sinus augmentation procedures prior to implant placement. Lateral window sinus augmentation procedures can produce incomplete bone augmentation as consequence of surgical and healing complications producing unusual and complex sinus anatomy. Although incomplete bone formation after sinus augmentation has been described in a previous case reports, this is the first case report that describes grafting these compromised sites prior to implant placement...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28050319/the-hidden-x-suture-a-technical-note-on-a-novel-suture-technique-for-alveolar-ridge-preservation
#11
Jung-Chul Park, Ki-Tae Koo, Hyun-Chang Lim
PURPOSE: The present study investigated the impact of 2 different suture techniques, the conventional crossed mattress suture (X suture) and the novel hidden X suture, for alveolar ridge preservation (ARP) with an open healing approach. METHODS: This study was a prospective randomized controlled clinical trial. Fourteen patients requiring extraction of the maxillary or mandibular posterior teeth were enrolled and allocated into 2 groups. After extraction, demineralized bovine bone matrix mixed with 10% collagen (DBBM-C) was grafted and the socket was covered by porcine collagen membrane in a double-layer fashion...
December 2016: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28027162/critical-issues-in-radiation-protection-knowledge-management-for-preserving-radiation-protection-research-and-development-capabilities
#12
Shaheen Azim Dewji
As a hub of domestic radiation protection capabilities, Oak Ridge National Laboratory's Center for Radiation Protection Knowledge has a mandate to develop and actuate a formal knowledge management (KM) effort. This KM approach exceeds recruitment and training efforts but focuses on formalized strategies for knowledge transfer from outgoing subject matter experts in radiation protection to incoming generations. It is envisioned that such an effort will provide one avenue for preserving domestic capabilities to support stakeholder needs in the federal government and the nuclear industry while continuing to lead and innovate in research and development on a global scale...
February 2017: Health Physics
https://www.readbyqxmd.com/read/28017140/molecular-cellular-and-pharmaceutical-aspects-of-filling-biomaterials-during-the-management-of-extraction-sockets
#13
Antonio Barone, Fortunato Alfonsia, Valentina Borgia, Giovanna Iezzi, Adriano Piattelli, Ugo Covani, Paolo Tonelli
After a tooth extraction both hard and soft tissues undergo dimensional changes. The use of a ridge preservation technique at the moment of the tooth extraction could help could help to prevent the volume loss, thus simplifying the subsequent prosthetic and/or implant therapy. Some studies were conducted in order to examine the biomaterials and the surgical technique used for ridge preservation procedures. Clinical, histological, volumetric and molecular outcomes were registered and analysed in different studies, in order to comprehend the biological events and the consequences of a socket preservation procedure and to allow the clinician to make the correct choice...
December 23, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28000281/clinical-relevance-of-dimensional-bone-and-soft-tissue-alterations-post-extraction-in-esthetic-sites
#14
REVIEW
Vivianne Chappuis, Mauricio G Araújo, Daniel Buser
The key to achieving pleasing esthetics in implant dentistry is a thorough understanding of the biological processes driving dimensional bone and soft tissue alterations post-extraction. The aim of the present report is first to characterize the extent of bone and soft tissue changes post-extraction and second to identify potential factors influencing tissue preservation in order to facilitate successful treatment outcomes. The facial bone wall thickness has been identified as the most critical factor influencing bone resorption and can be used as a prognostic tool in order to identify sites at risk for future facial bone loss subsequent to tooth extraction...
February 2017: Periodontology 2000
https://www.readbyqxmd.com/read/27994892/natural-tooth-pontic-an-instant-esthetic-option-for-periodontally-compromised-teeth-a-case-series
#15
Rishi Raj, Kriti Mehrotra, Ipshita Narayan, Triveni Mavinakote Gowda, D S Mehta
Sudden tooth loss in the esthetic zone of the maxillary or mandibular anterior region can be due to trauma, periodontal disease, or endodontic failure. The treatment options for replacing the missing tooth can vary between removable prosthesis, tooth-supported prosthesis, and implant-supported prosthesis. Irrespective of the final treatment, the first line of management would be to provisionally restore the patient's esthetic appearance at the earliest, while functionally stabilizing the compromised arch. Using the patient's own natural tooth as a pontic offers the benefits of being the right size, shape, and color and provides exact repositioning in its original intraoral three-dimensional position...
2016: Case Reports in Dentistry
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
#16
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/27987520/-dental-implantation-and-soft-tissue-augmentation-after-ridge-preservation-in-a-molar-site-a-case-report
#17
L P Zhao, Y L Zhan, W J Hu, H J Wang, Y P Wei, M Zhen, T Xu, Y S Liu
For ideal implant rehabilitation, an adequate bone volume, optical implant position, and stable and healthy soft tissue are required. The reduction of alveolar bone and changes in its morphology subsequent to tooth extraction will result in insufficient amount of bone and adversely affect the ability to optimally place dental implants in edentulous sites. Preservation of alveolar bone volume through ridge preservation has been demonstrated to reduce the vertical and horizontal contraction of the alveolar bone crest after tooth extraction and reduce the need for additional bone augmentation procedures during implant placement...
December 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27977824/soft-tissue-closure-of-grafted-extraction-sockets-in-the-anterior-maxilla-a-modified-palatal-pedicle-connective-tissue-flap-technique
#18
Edgard El Chaar, Sarah Oshman, Giuseppe Cicero, Alejandro Castano, Cinzia Dinoi, Leila Soltani, Yoonjung Nicole Lee
Localized ridge resorption, the consequence of socket collapse, following tooth extraction in the anterior maxilla can adversely affect esthetics, function, and future implant placement. Immediate grafting of extraction sockets may help preserve natural ridge contours, but a lack of available soft tissue can compromise the final esthetic outcome. The presented modified rotated palatal pedicle connective tissue flap is a useful technique for simultaneous soft tissue coverage and augmentation of grafted sockets to improve esthetic outcome...
January 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/27891638/regenerative-potential-of-leucocyte-and-platelet-rich-fibrin-part-b-sinus-floor-elevation-alveolar-ridge-preservation-and-implant-therapy-a-systematic-review
#19
REVIEW
Ana B Castro, Nastaran Meschi, Andy Temmerman, Nelson Pinto, Paul Lambrechts, Wim Teughels, Marc Quirynen
AIM: To analyse the effect of leucocyte- and platelet-rich fibrin (L-PRF) on bone regeneration procedures and osseointegration. MATERIALS AND METHODS: An electronic and hand search was conducted in three databases (MEDLINE, EMBASE and Cochrane). Only randomized clinical trials, written in English where L-PRF was applied in bone regeneration and implant procedures, were selected. No follow-up restrictions were applied. RESULTS: A total of 14 articles were included and processed...
November 28, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27891316/histologic-and-histomorphometric-evaluation-of-two-grafting-materials-cenobone-and-itb-mba-in-open-sinus-lift-surgery
#20
Babak Amoian, Maryam Seyedmajidi, Hamidreza Safipor, Sediqe Ebrahimipour
AIMS AND OBJECTIVES: Alveolar ridge reduction caused after tooth extraction can be minimized through ridge preservation and application of graft materials. The aim of this study was to compare the histologic and histomorphometric aspects of bone particulated allografts, Cenobone and ITB-MBA, in the reconstruction of vertical alveolar ridge after maxillary sinus augmentation. MATERIALS AND METHODS: This clinical trial was performed among 20 patients. The participants were randomly divided into two groups of 10 participants...
September 2016: Journal of International Society of Preventive & Community Dentistry
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