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https://www.readbyqxmd.com/read/29152286/bony-spicules-trapped-in-peri-implant-soft-tissue-a-common-unrecognized-finding
#1
Teeratida Sampatanukul, Pravej Serichetaphongse, Pichet Sampatanukul, Atiphan Pimkhaokham
According to the study, there were unexpected tiny bone spicules being inspected in peri-implant soft tissue. These displaced autogenous bone chips were probably presented when preparing implant sites. The displaced bone spicules seemed not induced significant inflammatory reactions; on contrary, defects of specimens and dissolving bone spicules pictures were demonstrated.
November 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29143781/biological-properties-of-low-toxic-plga-and-plga-phb-fibrous-nanocomposite-scaffolds-for-osseous-tissue-regeneration-evaluation-of-potential-bioactivity
#2
Boguslawa Żywicka, Izabella Krucińska, Jerzy Garcarek, Maria Szymonowicz, Agnieszka Komisarczyk, Zbigniew Rybak
Abstracts: The aim of the study was to evaluate the biocompatibility and bioactivity of two new prototype implants for bone tissue regeneration made from biodegradable fibrous materials. The first is a newly developed poly(l-lactide-co-glycolide), (PLGA), and the second is a blend of PLGA with synthetic poly([R,S]-3-hydroxybutyrate) (PLGA/PHB). The implant prototypes comprise PLGA or PLGA/PHB nonwoven fabrics with designed pore structures to create the best conditions for cell proliferation. The bioactivity of the proposed implants was enhanced by introducing a hydroxyapatite material and a biologically active agent, namely, growth factor IGF1, encapsulated in calcium alginate microspheres...
October 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29140383/a-randomized-split-mouth-clinical-trial-on-effectiveness-of-amnion-chorion-membranes-in-alveolar-ridge-preservation-a-clinical-radiologic-and-morphometric-study
#3
Muyeenul Hassan, Sivaraman Prakasam, Carol Bain, Ahmed Ghoneima, Sean Shih-Yao Liu
PURPOSE: Recent case reports suggest that amnion-chorion membranes (ACM) and dense polytetrafluoroethylene membranes (dPTFE) can be left exposed during ridge preservation. The aim of this study was to compare the effectiveness of these membranes in ridge preservation, particularly when they are intentionally left exposed. MATERIALS AND METHODS: A split-mouth, single-blind, randomized trial design was used to compare treatments with the two membranes in 22 nonmolar sites on the same arch...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140095/a-customized-healing-abutment-for-immediate-and-delayed-implant-cases
#4
Lambert J Stumpel, Chandur Wadhwani
Anatomically contoured healing abutments have been shown to contain and protect slow-resorbing substitution grafts, resulting in bone and soft-tissue volume augmentation. Even in healed sites customized healing abutments have demonstrated favorable outcomes compared to standard healing abutments. Through two separate cases, this article describes a technique that enables simple chairside fabrication of precisely contoured customized healing abutments and exact 3-dimensional intraoral positioning. With this technique, the soft tissues upon maturation closely resemble the natural root contour, which allows for the generation of esthetic and functional implant-supported restorations...
November 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/29137023/a-case-report-of-schatzker-type-vi-tibial-plateau-fracture-treated-with-double-reverse-traction-closed-reduction-combined-with-minimally-invasive-percutaneous-plate-osteosynthesis-technique-a-case-report
#5
Dian-Qing Li, De-Ye Song, Jiang-Dong Ni, Mu-Liang Ding, Jun Huang
RATIONALE: The knee joint is an important weight-bearing joint, tibial plateau fractures affect knee function and stability. High-energy intra-articular fractures involving the tibial plateau can cause management-related problems such as wound dehiscence; severe comminution leading to malalignment; and delayed complications such as varus collapse, implant failure, and arthritis of the knee joint. The treatment of severe or complex tibial plateau fractures can be quite difficult. Traditional methods of open reduction and plating require extensive exposures, which may further compromise soft tissue and devascularize bone fragments, leading to infection...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29132347/knee-arthrodesis-versus-above-the-knee-amputation-after-septic-failure-of-revision-total-knee-arthroplasty-comparison-of-functional-outcome-and-complication-rates
#6
Sven Hungerer, Martin Kiechle, Christian von Rüden, Matthias Militz, Knut Beitzel, Mario Morgenstern
BACKGROUND: After septic failure of total knee arthroplasty (TKA) and multiple revision operations resulting in impaired function, bone and/or soft-tissue damage a reconstruction with a revision arthroplasty might be impossible. Salvage procedures to regain mobility and quality of life are an above-the-knee amputation or knee arthrodesis. The decision process for the patient and surgeon is difficult and data comparing arthrodesis versus amputation in terms of function and quality of life are scarce...
November 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29130804/is-metal-particle-release-associated-with-peri-implant-bone-destruction-an-emerging-concept
#7
T Fretwurst, K Nelson, D P Tarnow, H-L Wang, W V Giannobile
Peri-implant diseases affecting the surrounding structures of endosseous dental implants include peri-implant mucositis and peri-implantitis. The prevalence of peri-implantitis ranges between 15% and 20% after 10 y, highlighting the major challenge in clinical practice in the rehabilitation of dental implant patients. The widespread nature of peri-implant bone loss poses difficulties in the management of biological complications affecting the long-term success of osseointegrated implant reconstructions. Metal and titanium particles have been detected in peri-implant supporting tissues...
November 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29130357/biological-effects-of-metal-degradation-in-hip-arthroplasties
#8
Donatella Granchi, Lucia Maria Savarino, Gabriela Ciapetti, Nicola Baldini
Metals and metal alloys are the most used materials in orthopedic implants. The focus is on total hip arthroplasty (THA) that, though well tolerated, may be associated with local and remote adverse effects in the medium-long term. This review aims to summarize data on the biological consequences of the metal implant degradation that have been attributed predominantly to metal-on-metal (MoM) THA. Local responses to metals consist of a broad clinical spectrum ranging from small asymptomatic tissue lesions to severe destruction of bone and soft tissues, which are designated as metallosis, adverse reactions to metal debris (ARMD), aseptic lymphocytic vasculitis associated lesion (ALVAL), and pseudotumors...
November 13, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/29127246/non-oncologic-applications-of-pet-ct-and-pet-mr-in-musculoskeletal-orthopedic-and-rheumatologic-imaging-general-considerations-techniques-and-radiopharmaceuticals
#9
Ali Gholamrezanezhad, Kyle Basques, Ali Batouli, Mojtaba Olyaie, George Matcuk, Abass Alavi, Hossein Jadvar
Positron Emission Tomography (PET) is often underutilized in the field of musculoskeletal imaging, with key reasons including the excellent performance of conventional musculoskeletal MRI, the limited spatial resolution of PET, and the lack of reimbursement for PET for non-oncologic musculoskeletal indications. However, with improvements in PET/CT and PET/MR imaging over the last decade as well as an increased understanding of the pathophysiology of musculoskeletal diseases, there is an emerging potential for PET as a primary or complementary modality in the management of rheumatologic and orthopedic patients...
November 10, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/29126690/evaluation-of-peri-implant-bone-levels-and-soft-tissue-dimensions-around-zirconia-implants-a-three-year-follow-up-study
#10
K Kniha, K A Schlegel, H Kniha, A Modabber, F Hölzle, K Kniha
The aim of this study was to measure bone levels around zirconia implants during follow-up of up to 3 years. Additionally, the effect of clinical contact point positions on the papilla deficit was evaluated. Eighty-one patients with 105 zirconia implants were examined at the 3-year follow-up. Bone levels were measured on the date of implant placement and at 3 months, 1year, and 3 years thereafter. Distances between the first bone-implant contact and the contact point of the crowns and between the bone level at the adjacent tooth and the contact point of the crowns were assessed...
November 7, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29124995/peri-implant-soft-tissue-parameters-and-crestal-bone-levels-among-narghile-smokers-and-nonsmokers
#11
Tariq Abduljabbar, Nawaf Al-Hamoudi, Muath AlQunayan, Abdullah AlAhmari, Alwaleed AlMalki, Elham Gholamiazizi, Fahim Vohra
This retrospective convenient sample case-control study investigated the peri-implant soft-tissue inflammatory parameters and crestal bone loss (CBL) among narghile smokers (NS) (Group I) and nonsmoking controls (Group II). Demographic data were collected using a questionnaire. Peri-implant plaque index (PI), bleeding-on-probing (BOP) and pocket-depth (PD) were assessed; and peri-implant CBL was measured on standardized digital bite-wing radiographs. Sample-size was estimated and statistical analysis were done using Mann-Whitney U-test...
August 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/29121707/reconstruction-of-medial-orbital-wall-fractures-without-subperiosteal-dissection-the-push-out-technique
#12
Yong-Ha Kim, Jin Ho Lee, Youngsoo Park, Sung-Eun Kim, Kyu-Jin Chung, Jun-Ho Lee, Tae Gon Kim
BACKGROUND: Various surgical methods for repairing medial orbital wall fractures have been introduced. The conventional technique requires total separation of the displaced orbital bones from the orbital soft tissues. However, subperiosteal dissection around the fracture can cause additional damage. The aim of the present study is to introduce a method of reconstructing medial orbital wall fractures without subperiosteal dissection named the "push-out" technique. METHODS: Six patients with post-traumatic enophthalmos resulting from an old medial orbital wall fracture and 10 patients with an acute medial orbital wall fracture were included...
November 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/29107477/contribution-of-implanted-genetically-modified-muscle-progenitor-cells-expressing-bmp-2-to-new-bone-formation-in-a-rat-osseous-defect
#13
Rodolfo E De La Vega, Consuelo Lopez De Padilla, Miguel Trujillo, Nicholas Quirk, Ryan M Porter, Christopher H Evans, Elisabeth Ferreira
Because muscle contains osteoprogenitor cells and has a propensity to form bone, we have explored its utility in healing large osseous defects. Healing is achieved by the insertion of muscle fragments transduced with adenovirus encoding BMP-2 (Ad.BMP-2). However, it is not known whether the genetically modified muscle contributes osteoprogenitor cells to healing defects or merely serves as a local source of BMP-2. This question is part of the larger debate on the fate of progenitor cells introduced into sites of tissue damage to promote regeneration...
October 5, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29098255/-the-effect-and-safety-of-two-techniques-of-immediate-implants-on-alveolar-bone-length-soft-and-hard-tissue-in-the-anterior-maxillary-zone
#14
Li Yang, Wei-Qing Lu
PURPOSE: To investigate the effect and safety of two techniques of immediate implants on the length of alveolar bone as well as the soft and hard tissue in the anterior maxillary zone. METHODS: One hundred and sixty cases of immediate implants in anterior maxillary zone were collected from August 2014 to August 2015 in our hospital. They were randomly and equally divided into flap group (80 cases) and flapless group (80 cases). The former received flap immediate implant while the later received flapless therapy...
June 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29095788/is-bone-graft-or-guided-bone-regeneration-needed-when-placing-immediate-dental-implants-a-systematic-review
#15
Hania AlKudmani, Reham Al Jasser, Sebastiano Andreana
AIMS: To systematically review the effect and type of bone graft and guided bone regeneration around immediate implants on hard and soft tissue changes. METHODS: Three electronic databases were searched up to June 2015. Outcomes consisted of hard and soft tissue dimensional changes. RESULTS: Eight studies were included according to inclusion criteria. Immediate implants with bone grafting had superior soft tissue stability and preserved horizontal ridge dimension and buccal plate thickness, when compared to no grafting...
November 1, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29093988/bone-level-implants-placed-in-the-anterior-maxilla-an-open-label-single-arm-observational-study
#16
EnFeng Gao, Wei-Hong Hei, Jong-Chul Park, KangMi Pang, Sun Kyung Kim, Bongju Kim, Soung-Min Kim, Jong-Ho Lee
Purpose: This study assessed marginal bone remodeling and soft tissue esthetics after the loading of single bone-level implants in the anterior maxilla. Methods: An open, single-arm observational clinical trial with 3 years of follow-up was performed, including 22 implants. The patients presented with a single tooth gap in the anterior maxilla (tooth positions 14-24), with natural or restored adjacent teeth. An implant was placed at least 8 weeks post-extraction and healed submerged for 6 weeks...
October 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29092996/the-levels-of-vancomycin-in-the-blood-and-the-wound-after-the-local-treatment-of-bone-and-soft-tissue-infection-with-antibiotic-loaded-calcium-sulphate-as-carrier-material
#17
P Wahl, M Guidi, E Benninger, K Rönn, E Gautier, T Buclin, J-L Magnin, F Livio
AIMS: Calcium sulphate (CaSO4) is a resorbable material that can be used simultaneously as filler of a dead space and as a carrier for the local application of antibiotics. Our aim was to describe the systemic exposure and the wound fluid concentrations of vancomycin in patients treated with vancomycin-loaded CaSO4 as an adjunct to the routine therapy of bone and joint infections. PATIENTS AND METHODS: A total of 680 post-operative blood and 233 wound fluid samples were available for analysis from 94 implantations performed in 87 patients for various infective indications...
November 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/29091020/do-clinical-and-radiological-assessments-contribute-to-the-understanding-of-biomaterials-results-from-a-prospective-randomized-sinus-augmentation-split-mouth-trial
#18
Jonas Lorenz, Tadas Korzinskas, Poju Chia, Sarah Al Maawi, Katrin Eichler, Robert Sader, Shahram Ghanaati
The present prospective randomized split-mouth trial reports on the 3-year clinical and radiological follow-up investigation of implants placed 7 months after sinus augmentation with two different bone substitute materials. Aim of the study was to complete the histologic observation of the cellular reactions by analysis of the implants and the volumetric changes of the augmented bone substitute materials. A sinus augmentation split-mouth trial was performed in 14 patients with the synthetic bone substitute material Nanobone® (NB) and the xenogeneic Bio-Oss® (BO)...
November 1, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29090970/ten-year-cbct-observation-of-the-buccal-bony-wall-of-an-immediately-placed-implant-at-the-anterior-maxilla-a-case-report
#19
Junho Jung, Kwantae Noh, Bilal Al-Nawas, Yong-Dae Kwon
Since the introduction of immediate implant placement, the buccal bony wall has been a major consideration for success, due to its correlation with soft tissue contour and color. This report presents the stability of the buccal wall thickness of an immediately placed implant at the anterior maxilla along 10-years. Although the width of the buccal wall had a decrease at post-op 2 years' follow-up, it remained stable afterwards, according to cone beam computed tomography (CBCT) scans. Hence, this report suggests that ensuring adequate bony wall thickness with bone augmentation and fixture position may promise the longevity of the buccal bony wall and surrounding soft tissue in immediate implant placement...
November 1, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29089254/biocompatibility-and-degradation-properties-of-we43-mg-alloys-with-and-without-heat-treatment-in%C3%A2-vivo-evaluation-and-comparison-in-a-cranial-bone-sheep-model
#20
Andrea Torroni, Chongchen Xiang, Lukasz Witek, Eduardo D Rodriguez, Paulo G Coelho, Nikhil Gupta
PURPOSE: Orthopedic and maxillofacial bone fractures are routinely treated by titanium internal fixation, which may be prone to exposure, infection or intolerance. Magnesium (Mg) and its alloys represent promising alternatives to produce biodegradable osteosynthesis devices, with biocompatibility and, specifically, hydrogen gas production during the degradation process, being the main drawback. Aim of this study is to test and compare biocompatibility, degradation rate and physiscochemical properties of two Mg-alloys to identify which one possesses the most suitable characteristics to be used as resorbable hardware in load-bearing fracture sites...
September 28, 2017: Journal of Cranio-maxillo-facial Surgery
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