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Pulp regeneration

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https://www.readbyqxmd.com/read/29144295/a-comparative-treatment-of-bleaching-wastewater-by-physicochemical-processes
#1
Ninad Oke, Swati Singh, Anurag Garg
The bleaching effluent discharged from a pulp and paper mill contains chlorinated organic compounds which are toxic to living matter. Physicochemical treatments such as coagulation and different advanced oxidation processes (AOPs) were employed for combined bleaching effluent generated from the first two stages (i.e. chlorination and alkali extraction) (pH = 3.5, chemical oxygen demand (COD) = 1,920 mg/L, and total organic carbon (TOC) = 663 mg/L). At optimum conditions (pH = 7.5, polyaluminium chloride (PAC) dose = 3...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29143185/osteogenic-prospective-of-deriving-human-dental-stem-cells-in-collagen-matrix-boost
#2
Tong-Jing Fang, Ding-Han Wang, Chia-Yu Wang, Raju Poongodi, Nien-Hsien Liou, Jiang-Chuan Liu, Ming-Lun Hsu, Po-Da Hong, Shih-Fang Yang, Meng-Lun Liu
Stem cells derived from oral tissue represent a highly attractive alternative source for clinical bone regeneration because they can be collected by non-invasive or minimally invasive procedures. Herein, we describe the human dental stem cells (DSCs) deriving from buccal fat pads (BFP), dental pulp (DP) of impacted teeth, and periodontal ligaments (PDL) to obtain BFPSCs, DPSCs, and PDLSCs, respectively. Cells were purified with selected medium and expanded through passages in stem cell culture medium. Purified cells were characterized for stemness by their growth rate, immunostaining, and multilineage differentiation ability...
November 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29139614/human-dental-stem-cell-derived-transgene-free-ipscs-generate-functional-neurons-via-embryoid-body-mediated-and-direct-induction-methods
#3
Ikbale El Ayachi, Jun Zhang, Xiao-Ying Zou, Zongdong Yu, Wei Wei, Kristen M S O'Connell, George T-J Huang
Induced pluripotent stem cells (iPSCs) give rise to neural stem/progenitor cells (NSCs), serving as a good source for neural regeneration. Here, we established transgene-free (TF) iPSCs from dental stem cells (DSCs) and determined their capacity to differentiate into functional neurons in vitro. Generated TF iPSCs from stem cells of apical papilla (SCAP) and dental pulp stem cells (DPSCs) underwent two methods -- embryoid body (EB)-mediated and direct induction, to guide TF-DSC iPSCs along with H9 or H9 Syn-GFP (human embryonic stem cells) into functional neurons in vitro...
November 15, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29138868/hdac-inhibitor-lmk%C3%A2-235-promotes-the-odontoblast-differentiation-of-dental-pulp-cells
#4
Zhao Liu, Ting Chen, Qianqian Han, Ming Chen, Jie You, Fuchun Fang, Ling Peng, Buling Wu
The role of dental pulp cells (DPCs) in hard dental tissue regeneration had received increasing attention because DPCs can differentiate into odontoblasts and other tissue‑specific cells. In recent years, epigenetic modifications had been identified to serve an important role in cell differentiation, and histone deacetylase (HDAC) inhibitors have been widely studied by many researchers. However, the effects of HDAC4 and HDAC5 on the differentiation of DPCs and the precise molecular mechanisms remain unclear...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29127007/mir-3065-5p-regulates-mouse-odontoblastic-differentiation-partially-through-bone-morphogenetic-protein-receptor-type-ii
#5
Chujiao Li, Qian Zhang, Shuaitong Yu, Yuxiu Lin, Shuchen Li, Huan Liu, Zhi Chen
Illumination of the molecular mechanisms regulating odontoblastic differentiation of dental papilla cells is of great significance for proper dentinogenesis and dental pulp regeneration. In this study, we discovered that microRNA (miR)-3065-5p is up-regulated during odontoblastic differentiation. Overexpression of miR-3065-5p promoted odontoblastic differentiation in vitro. Dual luciferase report assay verified that miR-3065-5p could bind to the 3'UTR of bone morphogenetic protein receptor type II (BMPR2), which dramatically increased in the beginning of odontoblastic differentiation but decreased in the terminal differentiation stage...
November 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29121452/3d-maskless-micropatterning-for-regeneration-of-highly-organized-tubular-tissues
#6
Chi Ma, Tiejun Qu, Bei Chang, Yan Jing, Jerry Q Feng, Xiaohua Liu
Micropatterning is a widely used powerful tool to create highly ordered microstructures on material surfaces. However, due to technical limitations, the integration of micropatterned microstructures into bioinspired 3D scaffolds to successfully regenerate well-organized functional tissues is not achieved. In this work, a unique maskless micropatterning technology is reported to create 3D nanofibrous matrices with highly organized tubular architecture for tissue regeneration. This micropatterning method is a laser-guided, noncontact, high-precision, flexible computer programming of machining process that can create highly ordered tubules with the density ranged from 1000 to 60 000 mm(-2) and the size varied from 300 nm to 30 µm in the bioinspired 3D matrix...
November 9, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29118330/molecular-spectrum-of-secretome-regulates-the-relative-hepatogenic-potential-of-mesenchymal-stem-cells-from-bone-marrow-and-dental-tissue
#7
Ajay Kumar, Vinod Kumar, Vidya Rattan, Vivekananda Jha, Arnab Pal, Shalmoli Bhattacharyya
Liver regeneration is a spontaneous process that occurs after liver injury, but acute liver failure is a complex and fatal disease which is difficult to treat. Cell-based therapies are promising alternative therapeutic approach for liver failure and different cell sources have been tested in this regard. We investigated the comparative hepatogenic potential of human bone marrow stem cells (BMSC) with stem cells derived from human dental pulp (DPSC), apical papilla (SCAP) and follicle (DFSC) during this study...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29112334/wtf-nano-one-pot-dewatering-and-water-free-topochemical-modification-of-nanocellulose-in-ionic-liquids-or-gamma-valerolactone
#8
Tiina Laaksonen, Jussi Kari Juhani Helminen, Laura Lemetti, Jesper Långbacka, Daniel Rico Del Cerro, Michael Hummel, Erkko Ilari Filpponen, Antti Rantamäki, Tia Kakko, Marianna Kemell, Susanne Wiedmer, Sami Heikkinen, Ilkka Kilpeläinen, Alistair William Thomas King
It is shown that ionic liquids can be used to dewater birch kraft pulp cellulose nanofibrillar (CNF) suspension and act as a medium for water-free topochemical modification of the nanocellulose. Acetylation, was applied as a model reaction to investigate the degree of modification and scope of effective ionic liquid structures. Little difference in reactivity was observed when water was removed, after introduction of ionic liquid or molecular co-solvent. However, the viscoelastic properties of CNF suspended in two ionic liquids showed that the more basic, but non-dissolving ionic liquid, allows for better solvation of the CNF...
November 7, 2017: ChemSusChem
https://www.readbyqxmd.com/read/29109319/histological-evaluation-of-the-effect-of-platelet-rich-plasma-on-pulp-regeneration-in-nonvital-open-apex-teeth-an-animal-study
#9
Jamileh Ghoddusi, Amir Maghsudlu, Hamid Jafarzadeh, Amirhossein Jafarian, Maryam Forghani
AIM: Platelet-rich plasma (PRP), which is a concentration of growth factors found in platelets, may be a suitable material for pulp regeneration. The aim of this animal study was a histological evaluation of PRP on pulp regeneration in nonvital teeth with immature apices. MATERIALS AND METHODS: A total of 40 premolar dogs' teeth were chosen for this study. After general anesthesia, the teeth were exposed, and subsequently, pulps were removed and the cavities were opened to the oral cavity...
November 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29104382/clinical-and-radiographic-evaluation-of-four-different-pulpotomy-agents-in-primary-molars-a-longitudinal-study
#10
B Sunitha, Ravindar Puppala, Balaji Kethineni, Manoj K Mallela, Ravigna Peddi, P Tarasingh
Background: The medicament formocresol (FC) used for pulpotomy in primary teeth has great concerns regarding its toxicity due to one of its constituent formaldehyde which acts by tissue fixation. Therefore, new medicaments were introduced which claimed preservation and regeneration of pulp. Aim: The present study is aimed to compare and evaluate the clinical and radiographic success of FC, pulpotec, mineral trioxide aggregate (MTA), and emdogain (EMD) as pulpotomy medicaments in human primary molars...
July 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29079395/effect-of-low-intensity-pulsed-ultrasound-on-the-expression-of-calcium-ion-transport-related-proteins-during-tertiary-dentin-formation
#11
Jing Zuo, Jiaxiu Zhen, Fei Wang, Yueheng Li, Zhi Zhou
Low-intensity pulsed ultrasound (LIPUS) is known for its positive effect on bone healing and reparative regeneration. This study investigated whether LIPUS affects reparative progression of the tooth and the expression of calcium ion transport-related proteins in odontoblasts and dental pulp cells using a rat dentin-pulp complex injury model. Forty male adult Sprague-Dawley rats underwent cavity preparation in the right maxillary first molar: 20 received LIPUS irradiation on the cavity-prepared tooth; 20 received LIPUS irradiation on the left maxillary first molar...
October 24, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29079059/differential-expression-of-long-noncoding-rnas-in-normal-and-inflamed-human-dental-pulp
#12
Xin Huang, Ke Chen
INTRODUCTION: Dental pulp inflammation is an excellent model for the interaction between tissue inflammation and regenerative processes. It is worthwhile to better understand molecular signaling of repair and regeneration in inflammatory processes. Emerging evidence suggests that long noncoding RNA (lncRNA) participates in immune system inflammatory processes. Here we investigate the expression of lncRNAs in pulpitis, the inflammation of dental pulp tissue, and identify lncRNAs that possibly participate in inflammation responses and odontogenesis...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079055/bleaching-of-a-discolored-tooth-with-retrieval-of%C3%A2-remnants-after-successful-regenerative-endodontics
#13
Aovana Timmerman, Peter Parashos
INTRODUCTION: This report presents the retrieval of remnants from a discolored mandibular right second premolar (tooth #29) of a 17-year-old female after a successful regenerative endodontic procedure (REP). METHODS: The REP was performed in October 2011. Coronal discoloration became of great concern to the patient at a review visit in 2016. A cone-beam computed tomographic scan was taken to investigate the formation of hard tissues within the root canal as well as a region of no calcified tissue formation...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079051/minced-pulp-as-source-of-pulpal-mesenchymal-stem-cells-with-odontogenic-differentiation-capacity
#14
Zhnagrui Liang, Satoshi Kawano, Wei Chen, Moein S Sadrkhani, Chaehwan Lee, Euiseong Kim, Alireza Moshaverinia, Reuben H Kim, Mo Kang
INTRODUCTION: Pulp tissue regeneration is becoming a reality after discovery of mesenchymal stem cells (MSCs) residing in the pulp tissues through various clinical innovations, although MSC transplantation into the pulp space has met with challenges of in vitro cell expansion and cultures. As a way to circumvent the regulatory and technical complexities of in vitro MSC culture, we investigated the use of minced pulp tissues as a source of pulpal MSCs for tissue regeneration. METHODS: We characterized the phenotype of cells explanted from minced pulp (MP), namely MP-derived MSCs (MP-MSCs), compared with dental pulp stem cells (DPSCs) established from pulp tissues by enzyme digestion...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079048/cytokine-expression-of-stem-cells-originating-from-the-apical-complex-and-coronal-pulp-of-immature-teeth
#15
Ki Hoon Joo, Je Seon Song, Seunghye Kim, Hyo-Seol Lee, Mijeong Jeon, Seong-Oh Kim, Jae-Ho Lee
INTRODUCTION: The aim of this study was to measure and compare the expression levels of cytokines from developing apical complex cells (DACCs) and dental pulp stem cells (DPSCs) of the immature tooth. METHODS: DPSC-conditioned medium (CM) and DACCs-CM were obtained from human young teeth, and 174 cytokines secreted from each CM were identified and compared. A cytokine membrane array and enzyme-linked immunosorbent assay were used to measure and compare the expression levels of the cytokines...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29075537/pulpo-periodontal-regeneration-management-of-partial-failure-revascularization
#16
Said Dhaimy, Sara Dhoum, Hind Amarir, Hafsa El Merini, Sellama Nadifi, Amal El Ouazzani
The aim of this work is to present a case of management of an open apex on a lower molar by using tissue engineering, with two endodontic procedures in the same tooth. We had to resort to pulp regeneration on the distal root and apexification with MTA on the mesial roots after the failure of regenerative therapy on those ones. The management consisted in scheduling regular follow-ups combined with X-rays. After 24 months, the radiological control has shown pulpo-periodontal regeneration associated with walls thickening and distal root elongation and periapical ad integrum healing...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/29066844/treatment-of-necrotic-teeth-by-apical-revascularization-meta-analysis
#17
Ling He, Juan Zhong, Qimei Gong, Sahng G Kim, Samuel J Zeichner, Lusai Xiang, Ling Ye, Xuedong Zhou, Jinxuan Zheng, Yongxing Liu, Chenyu Guan, Bin Cheng, Junqi Ling, Jeremy J Mao
Each year ~5.4 million children and adolescents in the United States suffer from dental infections, leading to pulp necrosis, arrested tooth-root development and tooth loss. Apical revascularization, adopted by the American Dental Association for its perceived ability to enable postoperative tooth-root growth, is being accepted worldwide. The objective of the present study is to perform a meta-analysis on apical revascularization. Literature search yielded 22 studies following PRISMA with pre-defined inclusion and exclusion criteria...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29064632/the-effects-of-platelet-derived-growth-factor-bb-on-human-dental-pulp-stem-cells-mediated-dentin-pulp-complex-regeneration
#18
Maolin Zhang, Fei Jiang, Xiaochen Zhang, Shaoyi Wang, Yuqin Jin, Wenjie Zhang, Xinquan Jiang
Dentin-pulp complex regeneration is a promising alternative treatment for the irreversible pulpitis caused by tooth trauma or dental caries. This process mainly relies on the recruitment of endogenous or the transplanted dental pulp stem cells (DPSCs) to guide dentin-pulp tissue formation. Platelet-derived growth factor (PDGF), a well-known potent mitogenic, angiogenic, and chemoattractive agent, has been widely used in tissue regeneration. However, the mechanisms underlying the therapeutic effects of PDGF on dentin-pulp complex regeneration are still unclear...
October 24, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29058851/stem-cell-delivery-approach-regenerates-dental-pulp-like-tissue-in-rats
#19
(no author information available yet)
No abstract text is available yet for this article.
February 2017: Journal of the California Dental Association
https://www.readbyqxmd.com/read/29054688/collagenous-matrix-supported-by-a-3d-printed-scaffold-for-osteogenic-differentiation-of-dental-pulp-cells
#20
Farahnaz Fahimipour, Erfan Dashtimoghadam, Morteza Rasoulianboroujeni, Mostafa Yazdimamaghani, Kimia Khoshroo, Mohammadreza Tahriri, Amir Yadegari, Jose A Gonzalez, Daryoosh Vashaee, Douglas C Lobner, Tahereh S Jafarzadeh Kashi, Lobat Tayebi
OBJECTIVE: A systematic characterization of hybrid scaffolds, fabricated based on combinatorial additive manufacturing technique and freeze-drying method, is presented as a new platform for osteoblastic differentiation of dental pulp cells (DPCs). METHODS: The scaffolds were consisted of a collagenous matrix embedded in a 3D-printed beta-tricalcium phosphate (β-TCP) as the mineral phase. The developed construct design was intended to achieve mechanical robustness owing to 3D-printed β-TCP scaffold, and biologically active 3D cell culture matrix pertaining to the Collagen extracellular matrix...
October 17, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
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