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Regenerative endodontic

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https://www.readbyqxmd.com/read/28416302/effect-of-bacterial-biofilm-on-the-osteogenic-differentiation-of-stem-cells-of-apical-papilla
#1
Lakshmi Vishwanat, Rose Duong, Koyo Takimoto, Linda Phillips, Claudia O Espitia, Anibal Diogenes, Shivani B Ruparel, David Kolodrubetz, Nikita B Ruparel
INTRODUCTION: Although clinical success in regenerative endodontics is substantially high, histological success is limited to finding bone/cementum-like tissue instead of dentin within the canal space. The aims of this study were to investigate (1) the effect of bacterial biofilm on osteogenic gene expression in stem cells of the apical papilla (SCAP) and (2) the effect of bacterial antigens on the functional differentiation of SCAP into a mineralizing phenotype. METHODS: Using an ex vivo organotypic root canal model and an American Association of Endontists-recommended regenerative endodontic procedures, we evaluated SCAP differentiation in the presence and absence of an Enterococcus faecalis biofilm...
April 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28415948/use-of-platelet-rich-plasma-for-regeneration-in-non-vital-immature-permanent-teeth-clinical-and-cone-beam-computed-tomography-evaluation
#2
Adel Alagl, Sumit Bedi, Khalid Hassan, Jehan AlHumaid
Objective This study was performed to assess the clinical and radiological outcomes of a revascularization procedure in immature teeth with apical periodontitis using platelet-rich plasma (PRP). The PRP protocol and conventional revascularization protocol, which used a blood clot as the scaffold, were compared. Methods Thirty non-vital immature permanent teeth were randomly categorized into two groups. After disinfecting the root canal space with triple antibiotic paste (1:1:1 ciprofloxacin, metronidazole, and cefaclor), a tissue scaffold was created using either PRP or a blood clot (control) and covered with white mineral trioxide aggregate...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28403365/crown-discoloration-promoted-by-materials-used-in-regenerative-endodontic-procedures-and-effect-of-dental-bleaching-spectrophotometric-analysis
#3
Luciane Geanini Pena Dos Santos, Wilson Tadeu Felippe, Beatriz Dulcineia Mendes de Souza, Andrea Cristina Konrath, Mabel Mariela Rodríguez Cordeiro, Mara Cristina Santos Felippe
Objectives: To assess tooth crown's color after intracanal treatment with triple antibiotic paste (TAP) or calcium hydroxide (CH); cervical sealing with glass ionomer cement (GIC) or mineral trioxide aggregate (MTA); and bleaching with carbamide peroxide. Material and Methods: After pulp removal and color spectrophotometer measurement, 50 bovine incisors were divided into 4 experimental groups and one control (untreated). Experiments were performed in phases (Ph)...
March 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28366235/zinc-bioglasses-regulate-mineralization-in-human-dental-pulp-stem-cells
#4
Mei Huang, Robert G Hill, Simon C F Rawlinson
OBJECTIVE: A promising strategy in regenerative endodontics is the combination of human dental pulp stem cells (hDPSCs) with an appropriate biomaterial substrate. The effects of zinc and zinc containing bioactive glasses (ZnBGs) on hDPSCs have been characterized in this study. METHODS: ZnBGs were designed and produced. Then the odontogenic differentiation and mineralization potential of hDPSCs upon ZnBGs treatment were investigated. RESULTS: Free Zn ions (0-5ppm) enhanced proliferation and alkaline phosphatase (ALP) activity of hDPSCs...
March 30, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28360862/iodixanol-as-a-contrast-agent-in-a-fibrin-hydrogel-for-endodontic-applications
#5
Gabriel Hertig, Matthias Zehnder, Anna Woloszyk, Thimios A Mitsiadis, Anja Ivica, Franz E Weber
The application of biomaterials used in regenerative endodontics should be traceable. In this study, we checked some basic effects of rendering a fibrin hydrogel radiopaque using an iodine-based contrast agent (iodixanol) approved for systemic application. Fibrin hydrogels were prepared from a fibrin sealant (Tisseel) using either an isotonic iodixanol solution (Visipaque 320, test) or Tris buffer (control) as a diluent. Gelation kinetics, radiopacity, and swelling of lyophilized hydrogels were tested using standard methods...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28342218/histological-assessment-of-regenerative-endodontic-treatment-in-animal-studies-with-different-scaffolds-a-systematic-review
#6
REVIEW
Milad Altaii, Lindsay Richards, Giampiero Rossi-Fedele
BACKGROUND/AIM: The concept of regenerative endodontic procedures remains controversial. The aim of this study was to evaluate the histology of the tissues formed in immature animal teeth with necrotic and infected pulps after attempted endodontic regeneration procedures using different scaffolds. DESIGN: A systematic electronic literature search was performed in PubMed, Web of Science, Scopus, EMBASE, DOSS, and Cochrane Library databases. The terms used were a combination of the following: "immature permanent necrotic tooth or teeth" or "open apex or apices" and "regeneration or revitalization or revascularization" and "histology...
March 24, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28320538/bioactive-molecule-delivery-systems-for-dentin-pulp-tissue-engineering
#7
REVIEW
Suja Shrestha, Anil Kishen
INTRODUCTION: Regenerative endodontic procedures use bioactive molecules (BMs), which are active signaling molecules that initiate and maintain cell responses and interactions. When applied in a bolus form, they may undergo rapid diffusion and denaturation resulting in failure to induce the desired effects on target cells. METHODS: The controlled release of BMs from a biomaterial carrier is expected to enhance and accelerate functional tissue engineering during regenerative endodontic procedures...
March 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28303584/long-term-results-of-periodontal-regenerative-therapy-a-retrospective-practice-based-cohort-study
#8
Frank Bröseler, Christina Tietmann, Ann-Katrin Hinz, Søren Jepsen
AIM: Evaluation of the long-term effectiveness of regenerative treatment of intrabony defects in periodontal practice. MATERIAL AND METHODS: A total of 1008 intrabony defects in 176 patients were analyzed after using collagen-added deproteinized bovine bone mineral (DBBMc) with or without collagen membrane (CM) or enamel matrix derivative (EMD). Defects were classified as 1- and 2-wall and as shallow (≤ 6 mm), moderate (> 6 and < 11 mm) and deep (≥11 mm)...
March 16, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28294199/management-of-an-immature-partially-necrotic-permanent-molar-by-pulp-revascularization-%C3%A2-two-year-follow-up
#9
Julian Schmoeckel, Mhd Said Mourad, Christian H Splieth, Ruth M Santamaria
Root canal treatment of immature teeth is considered a great challenge for both the dentist and the patient. The thinness of the root canals walls and the lack of an apical barrier leads to unpredictable treatment results. Revascularization is a novel promising treatment option in the field of regenerative endodontics for management of immature necrotic permanent teeth. This case presents a successful treatment of an 8-year-old patient with a partially necrotic, immature permanent mandibular right first molar pulp by revascularization...
March 14, 2017: Quintessence International
https://www.readbyqxmd.com/read/28216269/antibacterial-effects-of-antimicrobials-used-in-regenerative-endodontics-against-biofilm-bacteria-obtained-from-mature-and-immature-teeth-with-necrotic-pulps
#10
Jordon C Jacobs, Alex Troxel, Ygal Ehrlich, Kenneth Spolnik, Josef S Bringas, Richard L Gregory, Ghaeth H Yassen
INTRODUCTION: We investigated the direct and residual antibacterial effects of intracanal antimicrobials against bacterial biofilms obtained from infected mature and immature teeth with necrotic pulps. METHODS: Sterile dentin slabs (n = 100) were inoculated with bacterial biofilms obtained from root canals of an immature or a mature tooth with pulpal necrosis and incubated anaerobically for 3 weeks (n = 50 per biofilm). Dentin infected with each type of biofilm received 1 week of treatment with 1 or 5 mg/mL double antibiotic paste (DAP) in methylcellulose hydrogels, calcium hydroxide, or placebo paste or received no treatment (n = 10)...
April 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28215344/rac1-regulates-the-proliferation-adhesion-migration-and-differentiation-of-mdpc-23-cells
#11
Jing Ren, Guobin Liang, Li Gong, Bing Guo, Hongwei Jiang
INTRODUCTION: Stem cells are responsible for replacing damaged pulp tissue; therefore, promoting their survival and inducing their adhesion to dentin are vital. As a member of the Rho family of guanosine triphosphatases, Rac1 is an important regulator of osteoblast functions. However, little is known about its role in regenerative endodontic procedures. The current study examined the role of Rac1 in the proliferation, migration, and odontoblastic differentiation of MDPC-23 cells. METHODS: MDPC-23 cells were transfected with small interfering RNA to knock down Rac1 expression, and then their proliferation, migration, adhesion, and odontoblastic differentiation were examined in vitro...
April 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28196330/decellularized-human-dental-pulp-as-a-scaffold-for-regenerative-endodontics
#12
J S Song, K Takimoto, M Jeon, J Vadakekalam, N B Ruparel, A Diogenes
Teeth undergo postnatal organogenesis relatively late in life and only complete full maturation a few years after the crown first erupts in the oral cavity. At this stage, development can be arrested if the tooth organ is damaged by either trauma or caries. Regenerative endodontic procedures (REPs) are a treatment alternative to conventional root canal treatment for immature teeth. These procedures rely on the transfer of apically positioned stem cells, including stem cells of the apical papilla (SCAP), into the root canal system...
February 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28194367/retreatment-of-failed-regenerative-endodontic-of-orthodontically-treated-immature-permanent-maxillary-central-incisor-a-case-report
#13
Musaed Fahad Al-Tammami, Saad A Al-Nazhan
A revascularization procedure was shown to be the best alternative therapy for immature teeth with necrotic pulp and apical infection. A 12 year old female with a history of trauma to her upper central incisor and a sinus tract was referred for endodontic treatment. She was an active orthodontic patient and had undergone regenerative endodontic treatment for the past 2 years. Clinical examination revealed no response to sensibility, percussion, and palpation tests. The preoperative radiograph showed an open apex and apical rarefaction...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28190588/survival-of-the-apical-papilla-and-its-resident-stem-cells-in-a-case-of-advanced-pulpal-necrosis-and-apical-periodontitis
#14
Vanessa Chrepa, Brandon Pitcher, Michael A Henry, Anibal Diogenes
INTRODUCTION: Apical papilla represents a source of an enriched mesenchymal stem cell (MSC) population (stem cells of the apical papilla [SCAPs]) that modulates root development and may participate in regenerative endodontic procedures in immature teeth with pulp necrosis. The characteristics and phenotype of this tissue in the presence of inflammation are largely unknown. The purpose of this study was to characterize a human apical papilla sample that was isolated from an immature tooth with pulp necrosis and apical periodontitis...
April 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28132713/effects-of-epigallocatechin-gallate-an-antibacterial-cross-linking-agent-on-proliferation-and-differentiation-of-human-dental-pulp-cells-cultured-in-collagen-scaffolds
#15
Young-Sun Kwon, Hee-Jin Kim, Yun-Chan Hwang, Vinicius Rosa, Mi-Kyung Yu, Kyung-San Min
INTRODUCTION: This study aimed to evaluate the efficacy of epigallocatechin gallate (EGCG), an antibacterial cross-linking agent, on the proliferation and differentiation of human dental pulp cells (hDPCs) cultured in hydrogel collagen scaffolds. METHODS: The odontogenic differentiation induced by EGCG was evaluated by alkaline phosphatase (ALP) activity and odontogenic-related gene expression using real-time polymerase chain reaction. The antibacterial effect of EGCG was investigated by a disc diffusion assay in comparison with glutaraldehyde...
February 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28131412/second-generation-platelet-concentrate-platelet-rich-fibrin-as-a-scaffold-in-regenerative-endodontics-a-case-series
#16
Hengameh Bakhtiar, Shahram Esmaeili, Setareh Fakhr Tabatabayi, Mohammad Reza Ellini, Mohammad Hossein Nekoofar, Paul M H Dummer
INTRODUCTION: The purpose of this case series was to report the clinical and radiographic results of a pulp regenerative procedure using platelet-rich fibrin (PRF), a second-generation platelet concentrate, in immature teeth with necrotic pulps. METHODS: Root canal revascularization using PRF was performed on 4 immature teeth with necrotic pulps. After access cavity preparation, the root canals were irrigated with low concentration sodium hypochlorite solution (1...
March 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28110920/longitudinal-cohort-study-of-regenerative-endodontic-treatment-for-immature-necrotic-permanent-teeth
#17
Edwin Ka Meng Chan, Mia Desmeules, Margaret Cielecki, Basma Dabbagh, Beatriz Ferraz Dos Santos
INTRODUCTION: The treatment of immature necrotic permanent teeth presents several clinical challenges in endodontics. Regenerative endodontic procedures (REPs) permit root development, increased canal wall thickness, and apical closure. This longitudinal cohort study aimed to evaluate the long-term clinical and radiographic outcomes of REPs of immature necrotic permanent teeth over a 30-month period. METHODS: This study was performed at the Division of Dentistry of the Montreal Children's Hospital, Montreal, Quebec, Canada...
March 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28092093/regenerative-endodontics-a-true-paradigm-shift-or-a-bandwagon-about-to-be-derailed
#18
REVIEW
H Nazzal, M S Duggal
AIMS: Regenerative endodontic techniques (RETs) have been hailed as a paradigm shift for the management of traumatised non-vital immature permanent anterior teeth. In this article the aim was to critically appraise the literature with regards to the outcome of regenerative endodontics on root development. METHODS: Critical review of the literature where regenerative endodontic techniques have been used in the management of immature non-vital teeth with continuation of root development as the main outcome reported...
February 2017: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28050518/revitalization-of-an-immature-permanent-mandibular-molar-with-a-necrotic-pulp-using-platelet-rich-fibrin-a-case-report
#19
Dayalan Subash, Krishnamma Shoba, Shibu Aman, Srinivasan Kumar Indu Bharkavi
Any insult to the pulp during its development causes cessation of dentin formation and root growth. Pulpal status and degree of root development are the decisive factors in the treatment approach. Various treatment options have been tried like surgery with root-end sealing, calcium hydroxide-apexification, placement of apical plug and regenerative endodontic procedures to induce apexogenesis. An ideal scenario for a necrosed tooth with immature root would be continued root development coupled with regeneration of pulp tissue...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28041686/evaluation-of-a-commercially-available-hyaluronic-acid-hydrogel-restylane-as-injectable-scaffold-for-dental-pulp-regeneration-an-in%C3%A2-vitro-evaluation
#20
Vanessa Chrepa, Obadah Austah, Anibal Diogenes
INTRODUCTION: Regenerative endodontic procedures (REPs) are viable alternatives for treating immature teeth, yet these procedures do not predictably lead to pulp-dentin regeneration. A true bioengineering approach for dental pulp regeneration requires the incorporation of a scaffold conducive with the regeneration of the pulp-dentin complex. Several materials have been proposed as scaffolds for REPs; nonetheless, the majority are not eligible for immediate clinical chairside use. Thus, the aim of this study was to evaluate Restylane, a Food and Drug Administration-approved hyaluronic acid-based gel, as possible scaffold for REPs...
February 2017: Journal of Endodontics
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