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https://www.readbyqxmd.com/read/29386894/a-novel-sol-gel-derived-calcium-silicate-cement-with-short-setting-time-for-application-in-endodontic-repair-of-perforations
#1
Bor-Shiunn Lee, Hong-Ping Lin, Jerry Chun-Chung Chan, Wei-Chuan Wang, Ping-Hsuan Hung, Yu-Hsin Tsai, Yuan-Ling Lee
Mineral trioxide aggregate (MTA) is the most frequently used repair material in endodontics, but the long setting time and reduced mechanical strength in acidic environments are major shortcomings. In this study, a novel sol-gel-derived calcium silicate cement (sCSC) was developed using an initial Ca/Si molar ratio of 3, with the most effective mixing orders of reactants and optimal HNO3 catalyst volumes. A Fourier transform infrared spectrometer, scanning electron microscope with energy-dispersive X-ray spectroscopy, and X-ray powder diffractometer were used for material characterization...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29386783/effect-of-human-dentin-albumin-and-lipopolysaccharide-on-the-antibacteerial-activity-of-endodontic-activity-of-endodontic-irrigants
#2
Ramiro Martins Quintana, Alexander Pompermayer Jardine, Francisco Montagner, Clarissa Cavalcanti Fatturi Parolo, Renata Dornelles Morgental, Patrícia Maria Poli Kopper
Context: Human dentin powder (HD), bovine serum albumin (BSA) and endotoxin (LPS) may affect the antimicrobial activity of irrigating solutions. Aim: To evaluate the inhibitory effect of HD powder, BSA, and LPS on the antibacterial activity of 0.5%, 1%, 2.5%, and 5% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX) gel, BioPure mixture of tetracycline, citric acid, and detergent (MTAD), and QMix. Methods: The direct contact test against Enterococcus faecalis (ATCC 29212) for 2-min, 30-min and 6-h was used...
September 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29386775/the-effects-of-endodontic-substances-and-naturally-reducing-agents-on-the-bond-strength-of-epoxy-resin-based-sealer-to-root-dentin
#3
Doglas Cecchin, Ana Paula Farina, Ana Karina Bedran-Russo
Aim: To evaluate the effects of sodium hypochlorite (NaOCl), chlorhexidine (CHX), and two naturally derived reducing agents on the bond strength of epoxy resin-based sealer to root dentin. Materials and Methods: A total of 60 single-rooted human teeth were prepared using ProTaper (Dentsply Tulsa Dental Specialties, Johnson City, TN, USA) and an irrigation protocol including 5% NaOCl or 2% CHX gel, and ethylenediaminetetraacetic acid (EDTA), for smear layer removal...
September 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29342837/effect-of-exposed-surface-area-volume-and-environmental-ph-on-the-calcium-ion-release-of-three-commercially-available-tricalcium-silicate-based-dental-cements
#4
Sivaprakash Rajasekharan, Chris Vercruysse, Luc Martens, Ronald Verbeeck
Tricalcium silicate cements (TSC) are used in dental traumatology and endodontics for their bioactivity which is mostly attributed to formation of calcium hydroxide during TSC hydration and its subsequent release of calcium and hydroxide ions. The aim of this study was to determine the effect of volume (Vol), exposed surface area (ESA) and pH of surrounding medium on calcium ion release. Three commercially available hydraulic alkaline dental cements were mixed and condensed into cylindrical tubes of varying length and diameter (n = 6/group)...
January 13, 2018: Materials
https://www.readbyqxmd.com/read/29326505/influence-of-intracanal-irrigants-on-coronal-fracture-resistance-of-endodontically-treated-and-bleached-teeth-an-in-vitro-study
#5
Maryam Khoroushi, Fatemeh Tavakol, Farinaz Shirban, Sanaz Ziaei
Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) - Group A: nonbleached, Group B: bleached (B)...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29259368/clinical-applications-of-ferric-sulfate-in-dentistry-a-narrative-review
#6
REVIEW
Madhuri Bandi, Sreekanth Kumar Mallineni, Sivakumar Nuvvula
Ferric sulfate (FS) has been commonly used as a local hemostatic agent for more than three decades in dentistry. Even though the hemostatic mechanism of FS is questioned, it seems that agglutination of blood proteins occurs due to the reaction of blood with ferric and sulfate ions in acidic pH. FS has gained widespread importance as a pulpotomy medicament in contemporary dentistry; nevertheless, it has several applications in different fields of dentistry which was paid little attention. Hence, the purpose of this paper is to review the various applications of FS in dentistry, along with restorative dentistry and endodontics...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29229458/the-effects-of-irrigants-on-the-survival-of-human-stem-cells-of-the-apical-papilla-including-endocyn
#7
Mark B Scott, Gregory S Zilinski, Timothy C Kirkpatrick, Van T Himel, Kent A Sabey, Thomas E Lallier
INTRODUCTION: Endocyn, a pH-neutral solution of hypochlorous acid and hypochlorite has been developed for use as an endodontic irrigant. The purpose of this study was to evaluate the effect of Endocyn on human periodontal ligament (PDL) fibroblasts, rat osteosarcoma cells (UMR-106), and stem cells of the apical papilla (SCAP) compared with other commonly used endodontic irrigants. METHODS: To determine cytotoxicity, cells were exposed to various concentrations of Endocyn, 6% sodium hypochlorite (NaOCl), 17% EDTA, and 2% chlorhexidine for 10 minutes, 1 hour, or 24 hours...
December 8, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29225362/frequency-of-bacetrial-content-finding-in-persistant-periapical-lesions
#8
Joško Grgurević, Ana Ivanišević Malčić, Arjana Tambić Andrašević, Goranka Prpić Mehičić, Sania Kuzmac, Silvana Jukić
Objectives: To determine the percentage of persistant apical lesions positive for bacterial nucleic acids, to detect microorganisms difficult to cultivate in persistant apical lesions by PCR and relate them to endodontic failure, clinical symptoms and diabetes mellitus. Materials and methods: The samples of persistent apical lesions were collected during apicoectomy. Bacterial ubiquitous primer 16S rRNA was used to detect 16S ribosomal RNA in 36 samples. A species-specific PCR was performed with primers targeted to the bacterial 16S rRNA genes of Prevotella Nigrescens, Pseudoramibacter alactolyticus, and Propionobacterium propionicum...
September 2017: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/29195822/effect-of-crosslinkers-on-bond-strength-stability-of-fiber-posts-to-root-canal-dentin-and-in-situ-proteolytic-activity
#9
Juliana R L Alonso, Fernanda G Basso, Débora L S Scheffel, Carlos Alberto de-Souza-Costa, Josimeri Hebling
STATEMENT OF PROBLEM: Improved stability of the adhesive interface can be obtained using crosslinkers. However, research on the use of crosslinkers in root dentin is lacking. PURPOSE: The purpose of this in vitro study was to evaluate the effect of crosslinkers on the proteolytic activity of root dentin and on the bond strength of resin-cemented fiber posts. MATERIAL AND METHODS: Single root canals were obtained from premolars (n=48) and endodontically treated before being divided into 4 groups: deionized water (control), 0...
November 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29179973/mechanism-of-bioactive-molecular-extraction-from-mineralized-dentin-by-calcium-hydroxide-and-tricalcium-silicate-cement
#10
Xue-Qing Huang, John Camba, Li-Sha Gu, Brian E Bergeron, Domenico Ricucci, David H Pashley, Franklin R Tay, Li-Na Niu
OBJECTIVES: The objective of the present study was to elucidate the mechanism of bioactive molecule extraction from mineralized dentin by calcium hydroxide (Ca(OH)2) and tricalcium silicate cements (TSC). METHODS AND RESULTS: Transmission electron microscopy was used to provide evidence for collagen degradation in dentin surfaces covered with Ca(OH)2 or a set, hydrated TSC for 1-3 months. A one micron thick collagen degradation zone was observed on the dentin surface...
November 24, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29142881/smear-layer-removal-by-different-chemical-solutions-used-with-or-without-ultrasonic-activation-after-post-preparation
#11
Daniel Poletto, Ana Claudia Poletto, Andressa Cavalaro, Ricardo Machado, Leopoldo Cosme-Silva, Cássia Cilene Dezan Garbelini, Márcio Grama Hoeppner
Objectives: This study evaluated smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation. Materials and Methods: Forty-five extracted uniradicular human mandibular premolars with single canals were treated endodontically. The cervical and middle thirds of the fillings were then removed, and the specimens were divided into 9 groups: G1, saline solution (NaCl); G2, 2.5% sodium hypochlorite (NaOCl); G3, 2% chlorhexidine (CHX); G4, 11...
November 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29097290/in-vitro-evaluation-of-methylene-blue-removal-from-root-canal-after-photodynamic-therapy
#12
Karen Müller Ramalho, Sandra Ribeiro Cunha, Eric Mayer-Santos, Carlos de Paula Eduardo, Patricia Moreira de Freitas, Ana Cecilia Correa Aranha, Cacio Moura-Netto
In Endodontics, photosensitizers' such as methylene blue and toluidine blue have been used in photodynamic therapy due to their positive results. However, they can stain the dentin from the root canal after Photodynamic Therapy (PDT). The present in vitro study aimed to evaluate different stain removal protocols from root canal after PDT using methylene blue (MB) dye. After mechanical preparation of the root canal of 40 uni-radicular human teeth, PDT was performed using 0,01% MB with parameters of 3minutes of pre-irradiation and a diode laser irradiation emitting at 660nm, 40mW, 4minutes, 9...
October 30, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29065540/activation-of-alkaline-irrigation-fluids-in-endodontics
#13
REVIEW
Laurence J Walsh, Roy George
In conventional endodontic treatment, alkaline solutions of sodium hypochlorite (NaOCl) and ethylenediaminetetraacetic acid (EDTA) are used in combination to disinfect the root canal system and to eliminate debris and smear layers. An important concept that has emerged over recent years is the use of active physical methods for agitating these fluids to improve their penetration within areas that are not reached by endodontic instruments and to accelerate the chemical actions of these alkaline fluids against planktonic microorganisms, biofilms, soft tissue remnants and smear layers...
October 23, 2017: Materials
https://www.readbyqxmd.com/read/29042735/effectiveness-of-three-different-irrigants-17-ethylenediaminetetraacetic-acid-q-mix-and-phytic-acid-in-smear-layer-removal-a-comparative-scanning-electron-microscope-study
#14
Janhavi Balasaheb Jagzap, Sanjay S Patil, Vandana Jaykumar Gade, Deepika J Chandhok, Madhura A Upagade, Deepa A Thakur
BACKGROUND: Removal of smear layer from the root canal walls is important for long-standing endodontic success. AIM: The aim of this study is to evaluate and compare smear layer removing ability among 17% ethylenediaminetetraacetic acid (EDTA), Q-MIX, and phytic acid by scanning electron microscopy (SEM). MATERIALS AND METHODS: This in-vitro experimental study assessed smear layer removal using three different irrigants. Thirty single-rooted freshly extracted human permanent premolars were collected, disinfected, and decoronated to a standardized root length of 13 mm...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29034602/gender-and-arch-effects-on-the-use-of-non-opioid-analgesics-for-post-endodontic-pain-reduction
#15
Wail M Elzaki, Hassan M Ziada, Neamat H Abubakr, Yahia E Ibrahim
This study aimed to evaluate the secondary outcomes of gender and arch and their impact on pain reduction following initial endodontic therapy. 185 medications, including placebo were prepared, and 170 participants completed the trial. Group 1, received a single dose of Paracetamol alone (G-1), Group 2 received combined Ibuprofen/Paracetamol (G-2). Group 3 received combined Mefenamic acid/Paracetamol (G-3), group 4 received combined Diclofenac K/Paracetamol (G-4) and Group 5 received a placebo (G-5). There were no statistically significant differences in pain reduction between males and females whilst there were statistically significant differences between them and the placebo group...
October 16, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28961175/alkaline-sodium-hypochlorite-irrigant-and-its-chemical-interactions
#16
REVIEW
Patricia P Wright, Bill Kahler, Laurence J Walsh
Endodontic irrigating solutions may interact chemically with one another. This is important, because even when solutions are not admixed, they will come into contact with one another during an alternating irrigation technique, forming unwanted by-products, which may be toxic or irritant. Mixing or alternating irrigants can also reduce their ability to clean and disinfect the root canal system of teeth by changing their chemical structure with subsequent loss of the active agent, or by inducing precipitate formation in the root canal system...
September 29, 2017: Materials
https://www.readbyqxmd.com/read/28956355/the-synthetic-human-beta-defensin-3-c15-peptide-exhibits-antimicrobial-activity-against-streptococcus-mutans-both-alone-and-in-combination-with-dental-disinfectants
#17
Ki Bum Ahn, A Reum Kim, Kee-Yeon Kum, Cheol-Heui Yun, Seung Hyun Han
Streptococcus mutans is a major etiologic agent of human dental caries that forms biofilms on hard tissues in the human oral cavity, such as tooth and dentinal surfaces. Human β-defensin-3 (HBD3) is a 45-amino-acid natural antimicrobial peptide that has broad spectrum antimicrobial activity against bacteria and fungi. A synthetic peptide consisting of the C-terminal 15 amino acids of HBD3 (HBD3-C15) was recently shown to be sufficient for its antimicrobial activity. Thus, clinical applications of this peptide have garnered attention...
October 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28932151/influence-of-irrigating-agents-on-fiber-postpush-out-bond-strength-to-radicular-dentin-sections-with-the-different-adhesive-system
#18
Satheesh B Haralur, Asim Nasser A Alasabi, Sultan A Abohathrah Al Qahtani, Saeed Musleh S Alqahtani
OBJECTIVE: The objective of this study is to evaluate the effect of irrigating agents on push-out bond strength of resin postcemented with various adhesive systems at different radicular dentin sections. MATERIALS AND METHODS: Sixty single-rooted premolar teeth were root canal treated, subsequently decorated at cementoenamel junction. The endodontic postspace was irrigated with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) for Group A (n = 30) and Group B (n = 30), respectively...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28925588/evaluation-of-the-effect-of-four-final-irrigation-protocols-on-root-canal-dentin-components-by-polarized-light-microscopy-and-scanning-electron-microscopy
#19
Flávia Emi Razera Baldasso, Luana Roleto Cardoso, Vinicius Duval da Silva, Renata Dornelles Morgental, Patrícia Maria Poli Kopper
The present study aimed to evaluate the effects of four endodontic chelating agents, followed by 2.5% sodium hypochlorite (NaOCl), as final irrigation regimens on organic and inorganic components of human root dentin. Sixty mandibular incisors were prepared and randomly divided into six groups (n = 10): QMiX, 1% peracetic acid (PA), 17% EDTA, 10% citric acid (CA), 2.5% NaOCl (solution control) and distilled water (DW-negative control). After irrigation with the chelating agents, a final flush was performed with 2...
December 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28922597/core-shell-silver-nanoparticles-in-endodontic-disinfection-solutions-enable-long-term-antimicrobial-effect-on-oral-biofilms
#20
Elif Ertem, Beatrice Gutt, Flavia Zuber, Sergio Allegri, Benjamin Le Ouay, Selma Mefti, Kitty Formentin, Francesco Stellacci, Qun Ren
To achieve effective long-term disinfection of the root canals, we synthesized core-shell silver nanoparticles (AgNPs@SiO2) and used them to develop two irrigation solutions containing sodium phytate (SP) and ethylene glycol-bis(β-aminoethyl ether)N,N,N',N'-tetraacetic acid (EGTA), respectively. Ex vivo studies with instrumented root canals revealed that the developed irrigation solutions can effectively remove the smear layer from the dentinal surfaces. Further in vitro experiments with single- and multispecies biofilms demonstrated for the first time that AgNPs@SiO2-based irrigation solutions possess excellent antimicrobial activities for at least 7 days, whereas the bare AgNPs lose the activity almost immediately and do not show any antibacterial activity after 2 days...
October 11, 2017: ACS Applied Materials & Interfaces
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