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Alveolar regeneration

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https://www.readbyqxmd.com/read/29921173/sclerostin-neutralizing-antibody-enhances-bone-regeneration-around-oral-implants
#1
Shan Huey Yu, Jie Hao, Tobias Fretwurst, Min Liu, Paul Kostenuik, William V Giannobile, Qiming Jin
BACKGROUND: Dental implants have been an important option for the replacement of missing teeth. A major clinical challenge is how best to accelerate bone regeneration and reduce the healing time for functional restoration after implant placement. Monoclonal antibody against sclerostin (Scl-Ab) has been shown to enhance alveolar bone formation and fracture repair. The aim of this study was to investigate the effects of systemic administration of Scl-Ab on dental implant osseointegration and bone regeneration in an experimental alveolar ridge tooth extraction model...
June 19, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29920915/treatment-of-a-bilaterally-severely-resorbed-posterior-mandible-due-to-early-tooth-loss-by-guided-bone-regeneration-using-customized-allogeneic-bone-blocks-a-case-report-with-24-months-follow-up-data
#2
Oliver Blume, Michael Back, Teresa Born, Ralf Smeets, Ole Jung, Mike Barbeck
OBJECTIVE: The use of allogeneic bone grafts for alveolar ridge reconstruction has become an often-discussed alternative to augmentation procedures using autografts. Nevertheless, there still is a lack of literature concerning long-time experiences of allografts for alveolar ridge reconstruction. Especially the results of the use of allogeneic bone blocks for mandible reconstructions need to be further investigated. CLINICAL CONSIDERATIONS: In this case report, we present the use of customized allogenic bone blocks in Guided Bone Regeneration (GBR) procedures for severely deficient mandibulary bones, the implantation after a healing period of 5 month and the 24-month follow-up data...
June 19, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29895944/local-icariin-application-enhanced-periodontal-tissue-regeneration-and-relieved-local-inflammation-in-a-minipig-model-of-periodontitis
#3
Xiuli Zhang, Nannan Han, Guoqing Li, Haoqing Yang, Yangyang Cao, Zhipeng Fan, Fengqiu Zhang
Periodontitis is an inflammatory autoimmune disease. Treatment should alleviate inflammation, regulate the immune reaction and promote periodontal tissue regeneration. Icariin is the main active ingredient of Epimedii Folium, and it is a promising compound for the enhancement of mesenchymal stem cell function, promotion of bone formation, inhibition of bone resorption, alleviation of inflammation and regulation of immunity. The study investigated the effect of icariin on periodontal tissue regeneration in a minipig model of periodontitis...
June 12, 2018: International Journal of Oral Science
https://www.readbyqxmd.com/read/29851069/anti-inflammatory-character-of-phelligridin-d-modulates-periodontal-regeneration-in-lipopolysaccharide-induced-human-periodontal-ligament-cells
#4
J-E Kim, J-S Takanche, B-S Yun, H-K Yi
BACKGROUND AND OBJECTIVE: Phelligridin D is a hispidin analogue from the mushroom Phellinus baumii that is widely used as a food source in East Asia. This study tested phelligridin D for the anti-inflammatory effect and mechanism in lipopolysaccharide (LPS)-induced human periodontal ligament cells (HPDLCs). The objective of this study was to clarify whether the anti-inflammatory function of phelligridin D affects periodontal regeneration for supporting the HPDLCs of teeth. MATERIAL AND METHODS: Primary HPDLCs were isolated from healthy teeth and then cultured...
May 31, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29846937/isolation-and-characterization-of-progenitor-cells-from-surgically-created-early-healing-alveolar-defects-in-humans-a-preliminary-study
#5
Adriana Campos Passanezi Sant'Ana, Carla Andreotti Damante, Maria Alejandra Frias Martinez, Maria Alejandra Medina Valdivia, Paula Stefânia Hage Karam, Flavia Amadeu de Oliveira, Rodrigo Cardoso de Oliveira, Thais Helena Gasparoto, Ana Paula Campanelli, Mariana Schutzer Ragghianti Zangrando, Maria Lúcia Rubo de Rezende, Sebastião Luiz Aguiar Greghi, Euloir Passanezi
BACKGROUND: The granulation tissue (GT) present in surgically-created early healing sockets has been considered as a possible source of osteoprogenitor cells for periodontal regeneration, as demonstrated in animal studies. However, the in vitro osteogenic properties of tissue removed from human surgically-created early healing alveolar defects (SC-EHAD) remains to be established, being that the aim of this study. METHODS: Surgical defects were created in the edentulous ridge of two systemically healthy adults...
May 30, 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29845276/response-of-hpdlscs-on-3d-printed-pcl-plga-composite-scaffolds-in-vitro
#6
Caixia Peng, Jinxuan Zheng, Dongru Chen, Xueqin Zhang, Lidi Deng, Zhengyuan Chen, Liping Wu
Three‑dimensional printed (3DP) scaffolds have become an excellent resource in alveolar bone regeneration. However, selecting suitable printable materials remains a challenge. In the present study, 3DP scaffolds were fabricated using three different ratios of poly (ε‑caprolactone) (PCL) and poly‑lactic‑co‑glycolic acid (PLGA), which were 0.1PCL/0.9PLGA, 0.5PCL/0.5PLGA and 0.9PCL/0.1PLGA. The surface characteristics and degradative properties of the scaffolds, and the response of human periodontal ligament stem cells (hPDLSCs) on the scaffolds, were assessed to examine the preferable ratio of PCL and PLGA for alveolar bone regeneration...
May 25, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29844536/injectable-cartilaginous-template-transformed-bmscs-into-vascularized-bone
#7
Xiaoke Feng, Zhiye Li, Jianhua Wei, Zhihong Feng, Wei Wu, Yimin Zhao
Regeneration of alveolar bone for dental implant remains a major issue, partifcularly for patients suffering from severe bone adsorption and irregular socket trauma. Recapitulating embryological development is becoming an attractive approach for engineer organ or three-dimensional tissues from stem cells. In this study, we aimed to develop an injectable "cartilaginous" graft with adequate mechanical resistance and ideal bone remodelling potential. The cartilaginous graft was composed of a particulate decellularised cartilage matrix (PDCM), chondrogenically primed bone mesenchymal stem cell (BMSC) bricks (CB), and enriched platelet-rich plasma (P) gel...
May 29, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29843948/sandwich-osteotomy-for-the-reconstruction-of-deficient-alveolar-bone
#8
A Rachmiel, O Emodi, D Rachmiel, Y Israel, D Shilo
Alveolar bone deficiency is a very common problem encountered by the practitioner when planning dental implants. The severity of the deficiency is variable. Many practitioners perform augmentation using the method they feel comfortable with and do not necessarily use the most appropriate method. This is a retrospective study on 21 patients between the ages of 25 and 63 years exhibiting moderate vertical alveolar bone deficiency and treated by the sandwich technique. Mean vertical bone gain was 7.5mm. Sixty-one dental implants were inserted showing a survival rate of 96...
May 26, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29807969/crestal-bone-loss-around-dental-implants-platform-switching-vs-platform-matching-a-retrospective-study
#9
Rashmita Nayak, Raghu Devanna, Anand M Dharamsi, Jeevan Shetty, Rizwan Mokashi, Sourav Malhotra
AIM: The objective of this study was to determine the vertical and horizontal marginal bone levels in platform-switched and platform-matched dental implants. MATERIALS AND METHODS: In the present study, 50 dental implants were placed in 50 patients over a 1-year period. Measurement was performed from the implant shoulder to the most apical and horizontal marginal defect by periapical radiographs to examine the changes of peri-implant alveolar bone before and 12 months after prosthodontic restoration delivery...
May 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29805068/comparative-evaluation-of-various-low-level-laser-therapies-on-bone-healing-following-tooth-extraction-an-experimental-animal-study
#10
Erkan Çırak, Anıl Özyurt, Tuncay Peker, Suna Ömeroğlu, Mehmet Nadir Güngör
PURPOSE: The aim of this study was to evaluate the effects of helium-neon and gallium-aluminum-arsenide lasers with various doses on bone healing following tooth extraction. MATERIALS AND METHODS: Maxillary right incisor teeth of 30 female albino Wistar rats were extracted. Five groups were established: four groups treated with helium-neon or gallium-aluminum-arsenide lasers and a control group. Both laser groups' rats received energy doses of 6 J/cm2 and 10 J/cm2 for 7 days...
May 10, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29799319/the-role-of-nrf2-in-the-response-to-normal-tissue-radiation-injury
#11
Brent D Cameron, Konjeti R Sekhar, Maxwell Ofori, Michael L Freeman
The transcription factor Nrf2 is an important modulator of antioxidant and drug metabolism, carbohydrate and lipid metabolism, as well as heme and iron metabolism. Regulation of Nrf2 expression occurs transcriptionally and post-transcriptionally. Post-transcriptional regulation entails ubiquitination followed by proteasome-dependent degradation. Additionally, Nrf2-mediated gene expression is subject to negative regulation by ATF3, Bach1 and cMyc. Nrf2-mediated gene expression is an important regulator of a cell's response to radiation...
May 25, 2018: Radiation Research
https://www.readbyqxmd.com/read/29779212/periodontal-regeneration-via-chemo-attractive-constructs
#12
Xinjie Cai, Fang Yang, X Frank Walboomers, Yining Wang, John A Jansen, Jeroen J J P van den Beucken, Adelina S Plachokova
AIM: Chemo-attractants, such as stromal cell-derived factor-1α (SDF-1α), can offer an advantage for periodontal regeneration by recruiting the patient's own stem cells to stimulate self-repair. We here developed a chemo-attractive construct for periodontal regeneration using SDF-1α and evaluated its efficacy in vivo. MATERIALS AND METHODS: SDF-1α was loaded on gelatin sponge and tested in vitro for SDF-1α release. Subsequently, SDF-1α constructs were implanted into rat periodontal defects for 1 and 6 weeks, with unloaded materials and empty defects as controls...
May 19, 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29772189/comparison-of-intraoral-bone-regeneration-with-iliac-and-alveolar-bmscs
#13
F Wang, Y Zhou, J Zhou, M Xu, W Zheng, W Huang, W Zhou, Y Shen, K Zhao, Y Wu, D Zou
This study compared the osteogenic potential of bone marrow mesenchymal stem cells (BMSCs) of iliac and alveolar origins (I-BMSCs and Al-BMSCs, respectively), which were transplanted in combination with β tricalcium phosphate (β-TCP) in peri-implant bone defects to investigate the osseointegration between dental implants and tissue-engineered bone in dogs. Specifically, I-BMSCs and Al-BMSCs were cultured, characterized, and seeded on β-TCP and subjected to immunoblotting analyses and alkaline phosphatase activity assays...
May 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29770578/effect-of-silicon-doped-calcium-phosphate-bone-grafting-materials-on-bone-regeneration-and-osteogenic-marker-expression-after-implantation-in-the-ovine-scapula
#14
Christine Knabe, Doaa Adel-Khattab, Wolf-Dietrich Hübner, Fabian Peters, Tom Knauf, Barbara Peleska, Dirk Barnewitz, Antje Genzel, Roderik Kusserow, Florian Sterzik, Michael Stiller, Christian Müller-Mai
Compared to the currently clinically available bone grafting materials for alveolar ridge augmentation, there is a great demand for bioactive bone substitutes with higher resorbability, which enhance osteogenesis at the same time. This has prompted the development of a silicon-doped rapidly resorbable calcium alkali orthophosphate (Si-CAOP) and silicon-doped β-tricalcium phosphate (Si-TCP). This study evaluated the effect of these two particulate graft materials as compared to the currently clinically used β-TCP on bone formation and osteogenic marker expression after 2 weeks, 1, 3, 6, 12, and 18 months of implantation in critical size defects in the sheep scapula...
May 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29767652/peripheral-glial-cell-line-derived-neurotrophic-factor-facilitates-the-functional-recovery-of-mechanical-nociception-following-inferior-alveolar-nerve-transection-in-rats
#15
Masahiro Watanabe, Masamichi Shinoda, Dulguun Batbold, Naoyuki Sugano, Shuichi Sato, Koichi Iwata
AIMS: To identify endogenous sources of glial cell line-derived neurotrophic factor (GDNF) at the injury site following inferior alveolar nerve transection (IANX) and to determine whether GDNF signaling promotes the recovery of orofacial pain sensation. METHODS: Nociceptive mechanical sensitivity of the facial skin was assessed following IANX (n = 10) or sham operation (n = 7). GDNF-positive cells were identified and the amount of GDNF measured in the injured region of IANX rats (n = 10) and in sham rats (n = 10)...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29760507/gbr-membrane-of-novel-poly-butylene-succinate-co-glycolate-co-polyester-co-polymer-for-periodontal-application
#16
Seyedramin Pajoumshariati, Hadi Shirali, Seyedeh Kimia Yavari, Sogol Naghavi Sheikholeslami, Ghogha Lotfi, Fatemeh Mashhadi Abbas, Alireza Abbaspourrad
In periodontics, osteoconductive biodegradable guided bone regeneration (GBR) membranes with acceptable physico-mechanical properties are required to fix alveolar bone defects. The objectives of the present study were to produce and characterize a novel co-polyester-poly (butylene succinate-co-glycolate) (PBSGL), and fabricate a PBSGL membrane by electrospinning. We then aimed to evaluate the in vitro effect of the glycolate ratio on the biocompatibility and osteogenic differentiation of mesenchymal stem cells (MSCs), and evaluate in vivo bone regeneration using these membranes in rabbit calvarial defects by histology...
May 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29756133/biology-of-teeth-and-implants-host-factors-pathology-regeneration-and-the-role-of-stem-cells
#17
F-Michael Eggert, Liran Levin
In chronic periodontitis and peri-implantitis, cells of the innate and adaptive immune systems are involved directly in the lesions within the tissues of the patient. Absence of a periodontal ligament around implants does not prevent a biologic process similar to that of periodontitis from affecting osseointegration. Our first focus is on factors in the biology of individuals that are responsible for the susceptibility of such individuals to chronic periodontitis and to peri-implantitis. Genetic factors are of significant importance in susceptibility to these diseases...
2018: Quintessence International
https://www.readbyqxmd.com/read/29752282/niche-mediated-bmp-smad-signaling-regulates-lung-alveolar-stem-cell-proliferation-and-differentiation
#18
Mei-I Chung, Melissa Bujnis, Christina E Barkauskas, Yoshihiko Kobayashi, Brigid L M Hogan
The bone morphogenetic protein (BMP) signaling pathway, including antagonists, functions in lung development and regeneration of tracheal epithelium from basal stem cells. Here, we explore its role in the alveolar region, where type 2 epithelial cells (AT2s) and Pdgfrα+ type 2-associated stromal cells (TASCs) are components of the stem cell niche. We use organoids and in vivo alveolar regrowth after pneumonectomy (PNX) - a process that requires proliferation of AT2s and differentiation into type 1 cells (AT1s)...
May 11, 2018: Development
https://www.readbyqxmd.com/read/29747802/dental-implants-placed-in-alveolar-ridge-augmented-using-guided-bone-regeneration-procedure-performed-using-resorbable-collagen-membranes-and-particulate-bone-grafts-using-simultaneous-or-staged-approach-exhibit-a-high-survival-rate
#19
Satheesh Elangovan
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Guided bone regeneration with collagen membranes and particulate graft materials: A systematic review and meta-analysis. Wessing B, Lettner S, Zechner W. Int J Oral Maxillofac Implants 2018;33(1):87-100. SOURCE OF FUNDING: Did not receive any funding support TYPE OF STUDY/DESIGN: Systematic review with meta-analysis of data.
June 2018: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/29744191/synergistic-effects-of-the-combined-use-of-human-cultured-periosteal-sheets-and-platelet-rich-fibrin-on-bone-regeneration-an-animal-study
#20
Makoto Horimizu, Takehiko Kubota, Tomoyuki Kawase, Masaki Nagata, Mito Kobayashi, Kazuhiro Okuda, Koh Nakata, Hiromasa Yoshie
A human-cultured alveolar bone-derived periosteal (hCP) sheet is an osteogenic grafting material used clinically in periodontal regenerative therapy, while platelet-rich fibrin (PRF), a platelet concentrate with fibrin clot, is considered to augment the wound healing process. Therefore, whether the combined use of hCP-PRF complex could facilitate bone regeneration synergistically was evaluated in animal models. Human periosteal segments (1 × 1 mm) were cultured initially on plastic dishes and formed an hCP sheet...
August 2017: Clinical and Experimental Dental Research
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