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Endodontic acidents

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https://www.readbyqxmd.com/read/29904966/effect-of-the-calcium-silicate-based-sealer-removal-protocols-and-time-point-of-acid-etching-on-the-dentin-adhesive-interface
#1
Jéssika Mayhara Pereira Morais, Keli Regina Victorino, Wilfredo Gustavo Escalante-Otárola, Keren Cristina Fagundes Jordão-Basso, Regina Guenka Palma-Dibb, Milton Carlos Kuga
The aim of the study was to evaluate the effects when acid etching on the dentin surface was immediately performed (I) or 7 days (D) after calcium silicate-based sealer (MTA Fillapex) removal, using 95% ethanol (E) or xylol (X). First study, 60 bovine incisor dentin specimens were impregnated with sealer and divided into six groups (n = 10): (EI), E + I; (XI), X + I; (ED), E + D; (XD), X + D, (UN), untreated and (MR), mechanical removal of sealer. Scanning electron microscopy (SEM) images (500×) were obtained from each specimen and scores assessed the sealer residues persistence...
June 15, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29904797/hyaluronic-acid-hydrogels-incorporating-platelet-lysate-enhance-human-pulp-cell-proliferation-and-differentiation
#2
Leopoldina D F Almeida, Pedro S Babo, Cristiana R Silva, Márcia T Rodrigues, Josimeri Hebling, Rui L Reis, Manuela E Gomes
The restoration of dentine-pulp complex remains a challenge for dentists; nonetheless, it has been poorly addressed. An ideal system should modulate the host response, as well as enable the recruitment, proliferation and differentiation of relevant progenitor cells. Herein was proposed a photocrosslinkable hydrogel system based on hyaluronic acid (HA) and platelet lysate (PL). PL is a cocktail of growth factors (GFs) and cytokines involved in wound healing orchestration, obtained by the cryogenic processing of platelet concentrates, and was expected to provide the HA hydrogels specific biochemical cues to enhance pulp cells' recruitment, proliferation and differentiation...
June 14, 2018: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29780745/impact-of-minimal-root-canal-taper-on-the-fracture-resistance-of-endodontically-treated-bicuspids
#3
Carla Zogheib, Germain Sfeir, Gianluca Plotino, Gustavo De Deus, Maha Daou, Issam Khalil
Objective: Minimal invasive endodontics preserve coronal and radicular tooth structure to increase the fracture resistance of teeth. The aim of this study was to assess the influence of final preparation taper on the fracture resistance of maxillary premolars. Materials and Methods: Sixty maxillary premolars were selected and divided into 2 groups: 30 were shaped with a final apical diameter 30 and a 4% taper and 30 with 6% taper using iRaCe® instrument (FKG dentaire, Switzerland)...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29774548/release-of-tgf-%C3%AE-1-into-root-canals-with-various-final-irrigants-in-regenerative-endodontics-an-in-vitro-analysis
#4
Y Chae, M Yang, J R Kim
AIM: To investigate the release of growth factors into the root canal space after various final irrigants during regenerative endodontic procedures. The residual cytotoxic effect of final irrigants on stem cells from the apical papilla (SCAP) was also examined. METHODOLOGY: To measure the release of TGF-β1, root segments (8mm long) were irrigated with 1.5% NaOCl followed by 20 mL of final irrigants; Saline, 17% EDTA, 10% citric acid, 10% or 37% phosphoric acid...
May 17, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29707021/the-antifungal-effect-of-propolis-endodontic-irrigant-with-three-other-irrigation-solutions-in-presence-and-absence-of-smear-layer-an-in-vitro-study
#5
Lama Awawdeh, Ahmed Jamleh, Maha Al Beitawi
Introduction: The aim of this in vitro study was to compare the antifungal effect of propolis as an endodontic irrigant agent with a mixture of doxycycline, citric acid, and a detergent mixture (MTAD), 2% chlorhexidine (CHX) and 3% sodium hypochlorite (NaOCl) against Candida albicans in presence and absence of smear layer. Methods and Materials: Extracted teeth with single canals ( n =104) were prepared and randomly distributed into four experimental groups; 30% propolis, MTAD, 2% CHX and 3% NaOCl...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29670731/effect-of-different-irrigations-on-the-bond-strength-of-self-adhesive-resin-cement-to-root-dentin
#6
Carlos Garcia, Edwin Ruales-Carrera, Luiz-Henrique-Maykot Prates, Claudia-Angela-Maziero Volpato
Background: Different disinfectant solutions or medications are indicated prior fiber post bonding procedures.The aim was to evaluate the effect of different pretreatments of root canal on the bond strength of a fiber post luted to dentin with self-adhesive resin cement. Material and Methods: Forty-eight single-rooted mandibular premolars were endodontically treated and prepared to receive fiber posts. Teeth were assigned to four groups (n=12). Root canal walls were subjected to no pretreatment (G1 - control); irrigation with 10 mL of 5% sodium hypochlorite (NaOCl) (G2); 10 mL of 17% ethylenediaminetetraacetic acid (EDTA) associated with 10 mL of 5% NaOCl (G3); or 10 mL of 17% EDTA (G4)...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29561949/can-intra-radicular-cleaning-protocols-increase-the-retention-of-fiberglass-posts-a-systematic-review
#7
REVIEW
Lilian Vieira Oliveira, Thais Souza Maia, Karla Zancopé, Murilo de Souza Menezes, Carlos José Soares, Camilla Christian Gomes Moura
The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts (FGPs). Currently, there is no consensus in the literature regarding what is the best solution for the removal of debris after post-space preparation. This systematic review involved "in vitro" studies to investigate if cleaning methods of the root canal after post-space preparation can increase the retention of FGPs evaluated by the push-out test...
March 15, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29519974/the-effect-of-endodontic-irrigants-on-the-microtensile-bond-strength-of-different-dentin-adhesives
#8
B Dikmen, B Tarim
Objectives: The aim of this study was to determine the influence of irrigants on bond strength of adhesive systems. Materials and Methods: Superficial dentin surfaces of 60 extracted molars were divided into 15 groups, according to irrigants and adhesives. In the control groups, surfaces were irrigated with distilled water. In experimental groups, sodium hypochlorite (NaOCl), ethylenediaminetetraacetic acid (EDTA) + NaOCl, chlorhexidine (CHX), and NaOCl + sodium ascorbate were used as irrigants...
March 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29515530/antibacterial-effect-of-copaifera-duckei-dwyer-oleoresin-and-its-main-diterpenes-against-oral-pathogens-and-their-cytotoxic-effect
#9
Fariza Abrão, Jessica A Alves, Gessica Andrade, Pollyanna F de Oliveira, Sérgio R Ambrósio, Rodrigo C S Veneziani, Denise C Tavares, Jairo K Bastos, Carlos H G Martins
This study evaluates the antibacterial activity of the Copaifera duckei Dwyer oleoresin and two isolated compounds [eperu-8(20)-15,18-dioic acid and polyalthic acid] against bacteria involved in primary endodontic infections and dental caries and assesses the cytotoxic effect of these substances against a normal cell line. MIC and MBC assays pointed out the most promising metabolites for further studies on bactericidal kinetics, antibiofilm activity, and synergistic antibacterial action. The oleoresin and polyalthic acid but not eperu-8(20)-15,18-dioic provided encouraging MIC and MBC results at concentrations lower than 100 μg mL-1 ...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29486354/an-in-vivo-evaluation-of-microbial-diversity-before-and-after-the-photo-activated-disinfection-in-primary-endodontic-infections-traditional-phenotypic-and-molecular-approaches
#10
Maryam Pourhajibagher, Abbas Bahador
BACKGROUND: It is essential to identify the root canal microbial diversity and count due to the polymicrobial nature of the primary endodontic infection that is associated with the microbial diversity and increased resistance to the antimicrobial agents. Photo-activated disinfection (PAD), also known as antimicrobial photodynamic therapy, is a new promising non-antibiotic approach, studied to prevent microbial resistance and treatment failure. MATERIALS AND METHODS: In this study, we investigated the effect of PAD on reduction of microbial diversity and count, related with primary endodontic infections...
February 24, 2018: Photodiagnosis and Photodynamic Therapy
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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...
February 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29225362/frequency-of-bacetrial-content-finding-in-persistant-periapical-lesions
#18
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
#19
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...
March 2018: 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
#20
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...
February 2018: Dental Materials: Official Publication of the Academy of Dental Materials
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