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Endodontic acidents

Giuseppe Lo Giudice, Angelo Lizio, Roberto Lo Giudice, Antonio Centofanti, Giuseppina Rizzo, Michele Runci, Angela Alibrandi, Marco Cicciù
Aim. Purpose of the present paper is to analyze the efficiency of different post-space irrigation protocols. Methods. 28 single rooted teeth were endodontically treated. After post-space preparation every sample was assigned to one of three experimental groups and to one control group. In each group different irrigation protocols were performed as follows: EDTA (Group A), 37% orthophosphoric acid (Group B), and EDTA + 37% orthophosphoric acid with ultrasounds activation (Group C). In the control group (Group D) the irrigate association was not activated by ultrasounds...
2016: International Journal of Dentistry
Massimo Del Fabbro, Stefano Corbella, Patrick Sequeira-Byron, Igor Tsesis, Eyal Rosen, Alessandra Lolato, Silvio Taschieri
BACKGROUND: When primary root canal therapy fails, periapical lesions can be retreated with or without surgery. Root canal retreatment is a non-surgical procedure that involves removal of root canal filling materials from the tooth, followed by cleaning, shaping and obturating of the canals. Root-end resection is a surgical procedure that involves exposure of the periapical lesion through an osteotomy, surgical removal of the lesion, removal of part of the root-end tip, disinfection and, commonly, retrograde sealing or filling of the apical portion of the remaining root canal...
October 19, 2016: Cochrane Database of Systematic Reviews
Pauline M Lang, Rogério C Jacinto, Tatiane S Dal Pizzol, Maria Beatriz C Ferreira, Francisco Montagner
Infected root canal or acute apical abscess exudates can harbour several species, including Fusobacterium, Porphyromonas, Prevotella, Parvimonas, Streptococcus, Treponema, Olsenella and not-yet cultivable species. A systematic review and meta-analysis was performed to assess resistance rates to antimicrobial agents in clinical studies that isolated bacteria from acute endodontic infections. Electronic databases and the grey literature were searched up to May 2015. Clinical studies in humans evaluating the antimicrobial resistance of primary acute endodontic infection isolates were included...
September 30, 2016: International Journal of Antimicrobial Agents
W Chen, J Liang, Z He, W Jiang
Enterococcus faecalis is the major pathogen of post-endodontic disease and refractory periapical periodontitis, and recent research on this species has focused on its pathogenicity. E. faecalis most often causes disease in the form of a biofilm, and total protein expression shows a strong association with its virulence. Therefore, the purpose of our study was to explore different methods of extracting the total proteins of the E. faecalis (ATCC 33186 standard strain) biofilm. The total proteins in the biofilm were extracted using an ultrasonication method with varied parameters, including duration, amplitude setting, period, and duty cycle...
August 30, 2016: Genetics and Molecular Research: GMR
Kailash Attur, Mathew T Joy, Riyas Karim, V J Anil Kumar, C Deepika, Haseena Ahmed
AIM: The aim of the present study was to evaluate the efficiency of different endodontic irrigants in the removal of smear layer through scanning electron microscopic image analysis. MATERIALS AND METHODS: The present in vitro study was carried out on 45 single-rooted extracted human mandibular premolar teeth with single canal and complete root formation. Teeth were randomly assigned to three groups with 15 teeth in each group. Group I samples were irrigated with 17% ethylenediaminetetraacetic (EDTA) irrigation, Group II with 7% maleic acid irrigation, and Group III with 2% chlorhexidine irrigation...
August 2016: Journal of International Society of Preventive & Community Dentistry
S Kiran, Sandeep Prakash, Pujari R Siddharth, Supradip Saha, Naiza E Geojan, Mookambika Ramachandran
INTRODUCTION: The effect of smear layer and debris on the success rate of endodontic treatment has not yet been definitely determined. So the present study was aimed to evaluate the amount of smear layer and debris on the canal walls prepared with a combination of hand and rotary ProTaper technique using NaOCl and ethylenediaminetetraacetic acid (EDTA) alternately as root canal irrigants using scanning electron microscope (SEM). MATERIALS AND METHODS: Eighty intact freshly extracted human permanent mandibular premolar teeth were collected and randomly divided equally into four groups...
2016: Journal of Contemporary Dental Practice
Fereshteh Shafiei, Mahtab Memarpour, Zahra Sarafraz
PURPOSE: This study was undertaken to investigate whether use of an adhesive penetration enhancer, dimethyl sulfoxide (DMSO), improves bond stability of fiber posts to root dentin using two two-step etch-and-rinse resin cements. MATERIALS AND METHODS: Forty human maxillary central incisor roots were randomly divided into 4 groups after endodontic treatment and post space preparation, based on the fiber post/cement used with and without DMSO pretreatment. Acid-etched root dentin was treated with 5% DMSO aqueous solution for 60 seconds or with distilled water (control) prior to the application of Excite DSC/Variolink II or One-Step Plus/Duo-link for post cementation...
August 2016: Journal of Advanced Prosthodontics
Sun Woong Hong, Jung Eun Baik, Seok-Seong Kang, Kee-Yeon Kum, Cheol-Heui Yun, Seung Hyun Han
INTRODUCTION: Enterococcus faecalis is a pathogenic gram-positive bacterium closely associated with apical periodontitis. Although sodium hypochlorite (NaOCl) has been used as a common endodontic irrigant to eradicate bacteria in the root canal, it has not been elucidated whether NaOCl attenuates the inflammatory response induced by the E. faecalis virulence factor lipoteichoic acid (EfLTA). METHODS: Structurally intact EfLTA purified from E. faecalis was treated with NaOCl at various concentrations and time periods...
October 2016: Journal of Endodontics
Rahul J Hegde, Kavita Bapna
BACKGROUND: Root canal irrigants are considered momentous in their tissue dissolving property, eliminating microorganisms, and removing smear layer. The present study was aimed to compare the removal of endodontic smear layer using ethylene glycol bis (beta-amino ethyl ether)-N, N, N', N'-tetraacetic acid (EGTA) and citric acid solutions with saline as a control in primary anterior teeth. MATERIALS AND METHODS: Thirty primary anterior teeth were chosen for the study...
April 2016: Contemporary Clinical Dentistry
M A Alghilan, L J Windsor, J Palasuk, G H Yassen
AIM: To investigate the attachment and proliferation of dental pulp stem cells (DPSC) on dentine treated with various endodontic regeneration protocols. METHODOLOGY: Standardized dentine samples were irrigated with sodium hypochlorite (1.5% NaOCl) and ethylenediaminetetraacetic acid (17% EDTA) and randomized into four treatment groups and two control groups. The treatment groups were treated with a clinically used concentration of triple antibiotic paste (TAP), double antibiotic paste (DAP), calcium hydroxide (Ca(OH)2 ) or diluted TAP in a methylcellulose system (DTAP) for 1 week...
June 8, 2016: International Endodontic Journal
Pooneh Mohebbi, Saeed Asgary
AIMS: To compare the surface microhardness, setting time, and elemental and topographic changes of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) in contact with acidic, neutral, and alkaline solutions. SUBJECTS AND METHODS: For evaluating 24-h and 28-day surface microhardness using Vickers test and initial setting time using Gillmore apparatus, glass molds were filled manually or ultrasonically, either with CEM or MTA and randomly immersed in solutions with acidic, neutral, and alkaline pH (5...
May 2016: Journal of Conservative Dentistry: JCD
Sunil Kim, Minju Song, Su-Jung Shin, Euiseong Kim
INTRODUCTION: The purpose of the present study was to evaluate the long-term clinical outcome of endodontic microsurgery when mineral trioxide aggregate (MTA) and super ethoxybenzoic acid (Super EBA; Harry J. Bosworth, Skokie, IL) were used as root-end filling materials. Additionally, this study aimed to compare the clinical outcome of endodontic microsurgery at the 1-year follow-up with that at the 4-year follow-up. METHODS: Two hundred sixty teeth were randomly assigned to either the MTA or Super EBA group in equal numbers using the minimization method...
July 2016: Journal of Endodontics
N K Carvalho, M C Prado, P M Senna, A A Neves, E M Souza, S R Fidel, L M Sassone, E J N L Silva
AIM: To evaluate the effect of 17% ethylenediaminetetracetic acid (EDTA), 2.25% Peracetic Acid (PA) or 10% Citric Acid (CA) on the push-out bond strength of calcium-silicate based endodontic sealers [MTA Fillapex (Angelus, Londrina, Brazil) and Total Fill BC Sealer (FKG, La Chaux-de-Fonds, Switzerland)] to root dentine after different periods of immersion in phosphate-buffered saline (PBS). AH Plus (Dentsply DeTrey, Konstaz, Germany) was used as a reference material for comparison. METHODOLOGY: Thirty human maxillary incisors were selected and three 1-mm discs were obtained from the middle third of each root...
May 23, 2016: International Endodontic Journal
Dephne Jack Xin Leong, Frank C Setzer, Martin Trope, Bekir Karabucak
OBJECTIVES: The biocompatibility of two experimental scaffolds for potential use in revascularization or pulp regeneration was evaluated. MATERIALS AND METHODS: One resilient lyophilized collagen scaffold (COLL), releasing metronidazole and clindamycin, was compared to an experimental injectable poly(lactic-co-glycolic) acid scaffold (PLGA), releasing clindamycin. Human dental pulp stem cells (hDPSCs) were seeded at densities of 1.0 × 10(4), 2.5 × 10(4), and 5...
May 2016: Restorative Dentistry & Endodontics
M Widbiller, A Eidt, K-A Hiller, W Buchalla, G Schmalz, K M Galler
OBJECTIVES: Bioactive proteins are sequestered in human dentine and play a decisive role in dental pulp regeneration and repair. They can be released and exposed on the dentine surface by acids, but also chelators, such as ethylenediaminetetraacetic acid (EDTA). The objectives of this study were (i) to evaluate whether ultrasonic activation of irrigants in the root canal will promote growth factor release from dentine and (ii) to collect bioactive proteins in a physiological solution...
April 25, 2016: Clinical Oral Investigations
Wail M Elzaki, Neamat H Abubakr, Hassan M Ziada, Yahia E Ibrahim
INTRODUCTION: The present clinical trial aimed to evaluate the efficiency of paracetamol alone and in combination with 3 different nonsteroidal anti-inflammatory drugs for control of post-endodontic pain. METHODS: The inclusion criteria were moderate to severe pain of irreversible pulpitis, by using the Verbal Rating Scale and a 4-10 score on the Numerical Rating Scale, on anterior or premolar teeth, as well as the absence of signs and symptoms of apical periodontitis...
June 2016: Journal of Endodontics
Marlos Barbosa-Ribeiro, Adriana De-Jesus-Soares, Alexandre A Zaia, Caio C R Ferraz, José F A Almeida, Brenda P F A Gomes
INTRODUCTION: The infectious content of root canals, including bacteria and lipoteichoic acid (LTA), cause injuries to the periapical tissues. The purpose of this clinical study was to quantify the levels of both LTA and cultivable bacteria at the different phases of endodontic retreatment (ER) of teeth with post-treatment apical periodontitis. It also aimed to investigate the presence of gram-positive microorganisms before and after chemomechanical preparation (CMP) and intracanal medication (ICM)...
April 2016: Journal of Endodontics
Jung-Ju Kim, Hyun Young Song, Heithem Ben Amara, Kang Kyung-Rim, Ki-Tae Koo
BACKGROUND: Previous studies on ridge preservation focusing on fresh extraction sockets using graft materials for ridge preservation procedures have reported a delay in the tissue modeling and remodeling phases. The objective of this study is to evaluate the effect of hyaluronic acid (HA) on healing of infected sockets. METHODS: Six beagle dogs were used in this study. Both mandibular third premolars were hemisected, and the distal roots were extracted. Subsequently, periodontal and endodontic lesions were induced at the remaining mesial root...
July 2016: Journal of Periodontology
Kuan-Liang Chen, Ying-Yi Yeh, Jrhau Lung, Yu-Chi Yang, Kuo Yuan
INTRODUCTION: CD44 is a cell-surface glycoprotein involved in various cellular functions. Recent studies have suggested that CD44 is involved in early mineralization of odontoblasts. Hyaluronic acid (HA) is the principal ligand for receptor CD44. Whether and how HA regulated the mineralization process of dental pulp cells were investigated. METHODS: The effects of high-molecular-weight HA on differentiation and mineral deposition of dental pulp cells were tested by using alkaline phosphatase (ALP) activity assay and alizarin red S staining...
May 2016: Journal of Endodontics
Goran Tosić, Milan Miladinović, Milorad Kovaević, Miodrag Stojanović
BACKGROUND/AIM: Root canal treatment is considered to be the one of the most important procedures in endodontic treatment. To irrigate the root canal it is most common to use sodium hypochlorite (NaOCl), chlorhexodine, ethylenediaminetetraacetic acid (EDTA), local anesthetic solution, while the most used in Serbia is hydrogen peroxide (H2O2). The aim of this survey was to reveal the preferred root canal irrigants used by general dental practitioners in Serbia and to determine the influence of the continuing education program, delivered over the 3-year observation period, on work habits of dental practitioners...
January 2016: Vojnosanitetski Pregled. Military-medical and Pharmaceutical Review
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