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https://www.readbyqxmd.com/read/27891638/regenerative-potential-of-leucocyte-and-platelet-rich-fibrin-l-prf-part-b-sinus-floor-elevation-alveolar-ridge-preservation-and-implant-therapy-a-systematic-review
#1
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 randomised 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
#2
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
https://www.readbyqxmd.com/read/27883211/tissue-changes-after-ridge-preservation-with-two-xenografts-preliminary-results-from-a-multicenter-randomized-controlled-clinical-trial
#3
Antonio Barone, Paolo Toti, Alessandro Quaranta, Fortunato Alfonsi, Alessandro Cucchi, Bruno Negri, Roberto Di Felice, Saverio Marchionni, Jose' Luis Calvo-Guirado, Ugo Covani, Ulf Nannmark
OBJECTIVES: To evaluate and compare clinical and histological changes after ridge preservation procedures with those of spontaneous healing. MATERIALS_AND_METHODS: Ninety patients were enrolled in the present randomized controlled clinical trial and underwent single-tooth extraction in the premolar/molar areas. Thirty sites were grafted with collagenated cortico-cancellous (coll), 30 sites with cortical (cort) porcine bone and 30 sites underwent natural healing. Primary (vertical and horizontal bone changes after 3-month) and secondary outcomes (histomorphometric after 3 months) were evaluated at implant placement...
November 24, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27878769/to-what-extent-residual-alveolar-ridge-can-be-preserved-by-implant-a-systematic-review
#4
REVIEW
Ahmed Khalifa Khalifa, Masahiro Wada, Kazunori Ikebe, Yoshinobu Maeda
BACKGROUND: It has been reported that the load for (or to) implant-supported restoration may lead to bone remodeling as bone resorption and/or formation. While many authors supported the process of bone resorption, others elaborated bone apposition and increasing bone density close and remote to implant body (or fixture). This may suggest the role of the implant to reserve alveolar ridge from physiologic/pathologic resorption. The aim of this systematic review was to predict to how extend dental implants can preserve the residual alveolar ridge based on previous clinical investigations...
December 2016: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27843719/cranial-bone-histology-of-metoposaurus-krasiejowensis-amphibia-temnospondyli-from-the-late-triassic-of-poland
#5
Kamil Gruntmejer, Dorota Konietzko-Meier, Adam Bodzioch
In this study, 21 skull bones of Metoposaurus krasiejowensis from the Late Triassic of Poland were investigated histologically. Dermal bones show a diploë structure, with an ornamented external surface. The ridges consist of mostly well vascularized parallel-fibered bone; the valleys are built of an avascular layer of lamellar bone. The thick middle region consists of cancellous bone, with varying porosity. The thin and less vascularized internal cortex consists of parallel-fibered bone. The numerous Sharpey's fibers and ISF are present in all bones...
2016: PeerJ
https://www.readbyqxmd.com/read/27824054/record-of-massive-upwellings-from-the-pacific-large-low-shear-velocity-province
#6
Pilar Madrigal, Esteban Gazel, Kennet E Flores, Michael Bizimis, Brian Jicha
Large igneous provinces, as the surface expression of deep mantle processes, play a key role in the evolution of the planet. Here we analyse the geochemical record and timing of the Pacific Ocean Large Igneous Provinces and preserved accreted terranes to reconstruct the history of pulses of mantle plume upwellings and their relation with a deep-rooted source like the Pacific large low-shear velocity Province during the Mid-Jurassic to Upper Cretaceous. Petrological modelling and geochemical data suggest the need of interaction between these deep-rooted upwellings and mid-ocean ridges in pulses separated by ∼10-20 Ma, to generate the massive volumes of melt preserved today as oceanic plateaus...
November 8, 2016: Nature Communications
https://www.readbyqxmd.com/read/27804201/qualitative-evaluation-of-crystal-vue-rendering-technology-in-the-assessment-of-fetal-lip-and-palate
#7
Authors Andrea Dall'Asta, Gowrishankar Paramasivam, Christoph Lees
Facial clefts of the lip and alveolar ridge are usually evaluated with conventional ultrasound imaging. However, assessment of the extension of the defect into the palate and the detection of isolated clefts of the secondary palate is often not always possible due to poor acoustic windows. Nevertheless, knowledge of the extent of the cleft has significant prognostic implications in terms of pregnancy choices, surgical and functional outcome. Newly developed three-dimensional (3D) technologies offer the opportunity to develop novel imaging techniques for the evaluation of the secondary palate, although these have not been objectively compared...
November 1, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27796562/myxobolus-axelrodi-n-sp-myxosporea-myxobolidae-a-parasite-infecting-the-brain-and-retinas-of-the-cardinal-tetra-paracheirodon-axelrodi-teleostei-characidae
#8
Alvin C Camus, Jennifer A Dill, Thomas G Rosser, Linda M Pote, Matt J Griffin
An investigation of mortalities in a group of cardinal tetras Paracheirodon axelrodi Meyers, 1936, a popular ornamental fish, revealed myxozoan parasites in ventricles of the brains in 3/10 fish and the ocular retina of a fourth. Parasite impacts were unclear, as additional histopathological findings were present, including bacterial dermatitis and meningitis. Ethanol-preserved specimens pooled from multiple fish were used for morphological characterization of myxospores. Elongate, teardrop myxospores were 20...
October 28, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27788625/evaluation-of-healing-at-molar-extraction-sites-with-and-without-ridge-preservation-a-randomized-controlled-clinical-trial
#9
Christopher J Walker, Thomas J Prihoda, Brian L Mealey, David J Lasho, Marcel Noujeim, Guy Huynh-Ba
BACKGROUND: To date, limited evidence is available specifically evaluating ridge preservation (RP) and implant placement in molar sites. The primary aim of this study was to radiographically compare alveolar ridge changes with and without RP with cone-beam computed tomography (CBCT). METHODS: This parallel, two-arm RCT included forty patients evenly distributed between two treatment groups. Following molar extraction, sites were allowed to heal naturally or received RP with freeze-dried bone allograft covered by a non-resorbable dense polytetrafluoroethylene (dPTFE) membrane...
October 27, 2016: Journal of Periodontology
https://www.readbyqxmd.com/read/27765341/unusual-presentation-of-squamous-cell-carcinoma-of-the-maxilla-in-an-8-year-old-child
#10
Marco A O Magalhaes, Gino R Somers, Paula Sikorski, Vito Forte, Moustafa Abouzgia, Edward Barrett, Grace Bradley
Oral squamous cell carcinoma (OSCC) is extremely rare in patients younger than 20 years of age. We present here a case of OSCC of the maxillary alveolar ridge in an otherwise healthy 8-year-old patient. The clinicohistologic presentation was not typical for mucosal SCC, and the possibility of an intrabony origin from the odontogenic epithelium was considered. The patient was treated with surgical resection, and treatment decisions were made with consideration of the need for eradication of tumor as well as tissue preservation to allow normal growth and development...
November 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/27740654/extraction-socket-management-with-buccal-plate-expansion-preliminary-results-of-a-novel-technique
#11
Alberto Fernandez Ayora, Oscar González-Martín, Eric Rompen, Geoffrey Lecloux, France Lambert
The primary objective of this pilot study was to evaluate a new socket preservation technique involving the intentional expansion of the extraction socket buccal plate using a flapless internal corticotomy and biomaterials. A total of 11 patients requiring tooth extraction were enrolled in this study. The aim of this technique was to maintain or improve the hard and soft tissue contour of the ridge after tooth extraction. All surgical sites healed uneventfully. Significant alveolar bone dimension changes were observed in the coronal region of the ridge (-1...
November 2016: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/27731479/alveolar-dimensional-changes-relevant-to-implant-placement-after-minimally-traumatic-tooth-extraction-with-primary-closure
#12
Nelson Carranza, Hernan Bonta, Ariel F Gualtieri, Mariana A Rojas, Federico G Galli, Facundo Caride
The purpose of this study is to evaluate the dimensional changes that occur in the alveolar ridge after minimally traumatic tooth extraction by means of computed tomography (CT), with special focus on the portion of bone supporting the gingival zenith. Twenty subjects with indication for singlerooted tooth extraction and preserved alveolar walls were selected for this study. After a minimally traumatic extraction, two CT scans were performed; the first within 24 hours postextraction (TC1) and the second 6 months (TC2) later...
September 2016: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/27723962/simultaneous-transfer-and-imaging-of-latent-fingerprints-enabled-by-interfacial-separation-of-polydopamine-thin-film
#13
Lei Zhao, Wei Wang, Weihua Hu
Various approaches have been developed to visualize latent fingerprint (LFP) for personal identification but simultaneous transfer of LFP for preservation has yet to be achieved. We herein report a novel strategy for simultaneous transfer and imaging of LFPs on a broad variety of substrates by using the interfacial separation of polydopamine (PDA) thin film, followed by electroless silver deposition. In this approach, a PDA thin film deposited on a polydimethylsiloxane (PDMS) flake is used to cover the substrate carrying LFPs and then gently peeled off...
October 11, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27719704/-cone-beam-ct-evaluation-of-alveolar-ridge-modification-subject-to-immediate-implant-with-immediate-loading-and-delayed-loading
#14
Y Wang, Y Lin, B Chen, Y Zhang, P Di, C Yi
Objective: To assess and compare the radiographic outcomes of immediate implant placement with two different loading timing. Methods: The involved cases were collected from Department of Implantology, Peking University School and Hospital of Stomatology. Patients recieved immediate implant placement during 2010 Aug to 2012 Dec. The cases admitted delayed restoration program were assigned to Group Ⅰ(18 patients with 21 implants), the cases admitted immediate restoration program were assigned to Group Ⅱ (16 patients with 22 implants)...
October 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27712001/alveolar-ridge-preservation-after-tooth-extraction-a-bayesian-network-meta-analysis-of-grafting-materials-efficacy-on-prevention-of-bone-height-and-width-reduction
#15
Oreste Iocca, Alessio Farcomeni, Simon Pardiñas-Lopez, Huzefa S Talib
AIMS: To conduct a traditional meta-analysis and a Bayesian Network meta-analysis to synthesize the information coming from Randomized Controlled Trials on different socket grafting materials and combine the resulting indirect evidence in order to make inferences on treatments that have not been compared directly. MATERIALS AND METHODS: RCTs were identified for inclusion in the systematic review and subsequent statistical analysis. Bone height and width remodeling were selected as the chosen summary measures for comparison...
October 6, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27705870/cross-view-retrieval-via-probability-based-semantics-preserving-hashing
#16
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/27651983/a-new-rauisuchid-archosauria-pseudosuchia-from-the-upper-triassic-norian-of-new-mexico-increases-the-diversity-and-temporal-range-of-the-clade
#17
Emily J Lessner, Michelle R Stocker, Nathan D Smith, Alan H Turner, Randall B Irmis, Sterling J Nesbitt
Rauisuchids are large (2-6 m in length), carnivorous, and quadrupedal pseudosuchian archosaurs closely related to crocodylomorphs. Though geographically widespread, fossils of this clade are relatively rare in Late Triassic assemblages. The middle Norian (∼212 Ma) Hayden Quarry of northern New Mexico, USA, in the Petrified Forest Member of the Chinle Formation, has yielded isolated postcranial elements and associated skull elements of a new species of rauisuchid. Vivaron haydeni gen. et. sp. nov. is diagnosed by the presence of two posteriorly directed prongs at the posterior end of the maxilla for articulation with the jugal...
2016: PeerJ
https://www.readbyqxmd.com/read/27637737/effect-of-two-designs-of-implant-supported-overdentures-on-peri-implant-and-posterior-mandibular-bone-resorptions-a-5-year-prospective-radiographic-study
#18
Moustafa A Elsyad, Mohammed Mahmoud Alokda, Ashraf Anwer Gebreel, Nelly Ibrahim Hammouda, Ahmed Ali Habib
OBJECTIVES: The aim of this study was to evaluate and compare the effect of two designs of implant-supported overdentures on peri-implant and posterior mandibular bone resorptions after 5 years of follow-up. MATERIALS AND METHODS: Twenty edentulous patients were randomly assigned into two equal groups: Group I (GI), patients received overdentures supported and retained by cantilevered bars on two canine implants and Group II (GII), patients received overdentures retained by straight bars on two canine implants and supported by two-first molar implants...
September 16, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/27633512/replantation-of-a-displaced-incisor-in-a-boy-with-a-cleft-lip-and-alveolus-a-case-report
#19
Heidrun Schaaf, Heiko Kerkmann, Felix Pitka, Niko Christian Bock, Sameh Attia
BACKGROUND: Tooth replantation after traumatic avulsion or transplantation is a challenge in oral surgery. A special method named auto-alloplastic replantation, in which a titanium post is used after extraoral endodontic treatment, combines several advantages. The treatment is performed in one step with no further endodontic intervention, no wide root canal instrumentation, no recontamination, and reduced endodontic infection. This is the first report on replantation of an ectopic tooth in a patient with a cleft lip and alveolus using this method...
2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27630503/a-comparative-evaluation-of-extraction-socket-preservation-with-demineralized-freeze-dried-bone-allograft-alone-and-along-with-platelet-rich-fibrin-a-clinical-and-radiographic-study
#20
Dhaval J Thakkar, Neeraj C Deshpande, Deepak H Dave, Suraj D Narayankar
AIMS: To investigate clinically and radiographically, the bone fill in extraction sockets using demineralized freeze-dried bone allograft alone and along with platelet-rich fibrin (PRF). MATERIALS AND METHODS: A randomized controlled clinical trial was carried out on 36 nonrestorable single-rooted teeth sites. Sites were randomized into demineralized freeze-dried bone allograft (DFDBA) combined with PRF - test and DFDBA - control groups using a coin toss method...
July 2016: Contemporary Clinical Dentistry
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