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Iranian Endodontic Journal

Mohammad Mhd Nader Aldakak, Ismail Davut Capar, Mohammad Salem Rekab, Souad Abboud
UNLABELLED: An 11-year-old female patient was referred with a chief complaint of pain in the right mandibular second premolar. Clinical and radiographic examinations showed secondary caries under an old composite restoration, a negative response to a pulp test and an immature root with an open apex. After root canal cleaning and shaping, bleeding was invoked in the canal up to 2 mm short of the cemento-enamel junction (CEJ). After 10 min to allow clotting at this level, a plug of Biodentine was placed over the blood clot and the tooth was temporized with glass ionomer cement...
2016: Iranian Endodontic Journal
Masoud Parirokh, Sedigheh Farzaneh, Ali Reza Hallajmofrad
This case report presents conservative management of unset mineral trioxide aggregate (MTA) after being placed as a root-end filling material following periapical surgery. Periapical surgery was indicated for a maxillary lateral incisor of a 15-year-old male due to persistent exudate and a large periapical lesion. During surgery Angelus MTA was placed as root-end filling. The next session it was noticed that MTA had failed to completely set. In an orthograde approach, calcium-enriched mixture (CEM) cement was used to obturate the root canal space...
2016: Iranian Endodontic Journal
Azar Heydari, Mona Rahmani, Mostafa Heydari
UNLABELLED: Instrument breakage during treatment can lead to serious complications and carries the risk of treatment failure. When a file breaks in the canal, bypassing or removal can be difficult and the long-term prognosis of the tooth may be compromised. Sometimes surgery may be indicated for removal of the broken segment. Often some part of the root cannot be cleaned because of blockage by the broken file. This report presents a specific approach in non- surgical removal of a broken file from a maxillary lateral incisor with a buccal sinus tract and a broken instrument in the apical third which was partially over extended into the periapical lesion...
2016: Iranian Endodontic Journal
Maryam Golmohammadi, Hamid Jafarzadeh
Accurate diagnosis of the root canal morphology and anatomy is essential for thorough shaping and cleaning of the entire root canal system and consequent successful treatment. This report describes a case of maxillary second premolar with two roots and three root canals (two mesial and distal palatal canals). The case report underlines the importance of complete knowledge about root canal morphology and possible variations, coupled with clinical and radiographic examination in order to increase the ability of clinicians to treat difficult cases...
2016: Iranian Endodontic Journal
Joedy Santa-Rosa, Manoel Damião de Sousa-Neto, Marco Aurelio Versiani, Giselle Nevares, Felipe Xavier, Kaline Romeiro, Marcely Cassimiro, Graziela Bianchi Leoni, Rebeca Ferraz de Menezes, Diana Albuquerque
INTRODUCTION: This study aimed to perform a rigorous sample standardization and also evaluate the preparation of mesiobuccal (MB) root canals of maxillary molars with severe curvatures using two single-file engine-driven systems (WaveOne with reciprocating motion and OneShape with rotary movement), using micro-computed tomography (micro-CT). METHODS AND MATERIALS: Ten MB roots with single canals were included, uniformly distributed into two groups (n=5). The samples were prepared with a WaveOne or OneShape files...
2016: Iranian Endodontic Journal
Nooshin Sadat Shojaee, Alireza Adl, Fereshte Sobhnamayan, Azam Khademi, Mina Hamedi
INTRODUCTION: The purpose of this study was to evaluate the effect of different solvents; carbonic acid (H2CO3), hydrochloric acid (HCl), chlorhexidine (CHX) and sodium hypochlorite (NaOCl) on the surface hardness of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement. METHODS AND MATERIALS: Plexiglass molds were prepared and filled with Angelus MTA or CEM cement and then exposed to 2% carbonic acid, 37% hydrochloric acid, 2% chlorhexidine, 5...
2016: Iranian Endodontic Journal
Maryam Vossoghi, Mitra Vossoghi, Shahriar Shahriari, Farhad Faramarzi, Rasoul Yousefi Mashouf, Maryam Farhadian
INTRODUCTION: This in vitro study aimed to assess the effectiveness of a single-file rotary system (OneShape) in reduction of intracanal bacteria. METHODS AND MATERIALS: Eighty one single-rooted mandibular first premolars with single canals were used. Six samples were selected as aseptic control group. Seventy five remaining specimens were infected by Enterococcus faecalis and incubated for 72 h at 37(°)C. Then they were randomly divided into three groups (n=25)...
2016: Iranian Endodontic Journal
Nahid Ramazani, Parisa Sadeghi
INTRODUCTION: Adequate seal of iatrogenically perforated area within the root canal system can improve the long term treatment prognosis. This in vitro study evaluated the sealing ability of mineral trioxide aggregate (MTA), calcium-enriched mixture (CEM) cement and Biodentine in repair of furcation perforation in primary molars. METHODS AND MATERIALS: A total of 61 freshly extracted primary mandibular second molars were randomly divided into three groups (n=17) and 10 teeth were put in negative (without perforation, n=5) and positive (perforated without repair, n=5) control groups...
2016: Iranian Endodontic Journal
Zahed Mohammadi, Saeed Asgary, Sousan Shalavi, Paul V Abbott
One of the main causes of endodontic treatment failure is the clinician's inability to localize all the root canals. Due to the complex anatomy of the root canal system, missed canals are not uncommon. There are several strategies to decrease the possibility of missed root canals starting with good pre-operative radiographies. In order to overcome the limitations of conventional radiographies, cone-beam computed tomography (CBCT) can be considered. A correct access cavity preparation is of pivotal importance in localizing the orifices of the root canals...
2016: Iranian Endodontic Journal
Yaser Safi, Sepanta Hosseinpour, Alireza Aziz, Masoud Bamedi, Mahsa Malekashtari, Zahra Vasegh
INTRODUCTION: This study sought to assess the effects of amperage (mA) and field of view (FOV) on intracanal metal post artifacts and the diagnostic parameters for detection of vertical root fracture (VRF) in teeth with intracanal posts. METHODS AND MATERIALS: In this diagnostic study, 80 human single-canal teeth were evaluated by cone-beam computed tomography (CBCT). Nickel chrome cast posts were placed into root canals after root canal therapy and canal preparation...
2016: Iranian Endodontic Journal
Fatemeh Ayatollahi, Mahdi Tabrizizadeh, Milad Hazeri Baqdad Abad, Reza Ayatollahi, Fatemeh Zarebidoki
INTRODUCTION: Microleakage is of the causes of endodontic treatment failure. The aim of this in vitro study, was to compare the microleakage of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement apical plugs in three environments. METHODS AND MATERIALS: A total of 130 human extracted single rooted teeth were collected. After decoronation, preparation of the root canal space and simulation of open apices, 5 teeth were selected as positive and negative control groups and the rest of the samples were randomly divided into two groups (MTA plug and CEM cement plug) and each group was divided into 3 subgroups (dry, contaminated with saliva and contaminated with blood)...
2016: Iranian Endodontic Journal
Farnaz Jafari, Hossein Samadi Kafil, Sanaz Jafari, Mohammad Aghazadeh, Tahereh Momeni
INTRODUCTION: The main goal of endodontic treatment is elimination of bacteria and their by-products from infected root canals. This study compared the antibacterial effect of two different sealers, AH 26 and MTA Fillapex, on 4 microorganisms 24, 48 and 72 h and 7 days after mixing. METHODS AND MATERIALS: The microorganisms used in this study consisted of Lactobacillus acidophilus (ATCC 4356), Lactobacillus casei (ATCC 39392), Staphylococcus aureus (ATCC 25923) and Enterococcus faecalis (ATCC 29212)...
2016: Iranian Endodontic Journal
Miriam Zaccaro Scelza, Fernando de Noronha, Licinio Esmeraldo da Silva, Marcos Maurício, Marco Antonio Gallito, Pantaleo Scelza
INTRODUCTION: The aim of this in vitro study was to evaluate the effect of 10% citric acid and 17% ethylenediaminetetraacetic acid (EDTA) irrigating solutions on the surface morphology of young and old root dentin by determining the number and diameter of dentinal tubules using scanning electron microscopy (SEM). METHODS AND MATERIALS: Fifty healthy human teeth collected from young (≤30 years) and old (≥60 years) individuals (n=25) were first prepared with a Largo bur #2 to produce smear layer on the root canal surface...
2016: Iranian Endodontic Journal
Sedigheh Khedmat, Abbas Azari, Ahmad Reza Shamshiri, Mehdi Fadae, Hoorieh Bashizadeh Fakhar
INTRODUCTION: The aim of this in vitro study was to compare the efficacy of ProTaper retreatment (ProTaper R) and Mtwo retreatment (Mtwo R) files in removing gutta-percha and GuttaFlow from endodontically treated straight root canals. METHODS AND MATERIALS: The root canals of 60 human mandibular single-rooted premolars were prepared and randomly divided into two groups (n=30). In groups A and B the root canals were obturated using lateral condensation of gutta-percha plus AH 26 and GuttaFlow, respectively...
2016: Iranian Endodontic Journal
Mohammad Samiei, Shahriar Shahi, Amir Ardalan Abdollahi, Mahsa Eskandarinezhad, Ramin Negahdari, Zahra Pakseresht
INTRODUCTION: This study compared the efficacy of light-activated low-power laser, 2% chlorhexidine (CHX) and 2.5% NaOCl in eliminating Enterococcus faecalis (E. faecalis) from the root canal system. METHODS AND MATERIALS: The root canals of 60 maxillary central incisors were contaminated with E. faecalis and then the bacteria were incubated for 24 h. All the root canals were instrumented in a crown-down manner with #4 and 3 Gates-Glidden drills, followed by RaCe rotary files (40/0...
2016: Iranian Endodontic Journal
Armita Rouhani, Majid Akbari, Aida Farhadi-Faz
INTRODUCTION: The aim of this in vitro study was to evaluate the tooth discoloration induced by calcium-enriched mixture (CEM) cement and mineral trioxide aggregate (MTA). METHODS AND MATERIALS: Forty five endodontically treated human maxillary central incisors were selected and divided into three groups (n=15) after removing the coronal 3 mm of the obturating materials. In the MTA group, white MTA plug was placed in pulp chamber and coronal zone of the root canal...
2016: Iranian Endodontic Journal
Mahdi Sedigh-Shams, Ahmad Gholami, Abbas Abbaszadegan, Roohollah Yazdanparast, Milad Saberi Nejad, Azam Safari, Mohammadreza Nabavizadeh, Younes Ghasemi
INTRODUCTION: The purpose of this study was to compare the antimicrobial efficacy of sodium hypochlorite (SH) and calcium hypochlorite (CH) against Enterococcus faecalis (E. faecalis) using quantitative real-time polymerase chain reaction (qPCR) analysis and also to compare their cytocompatibility on L929 murine fibroblasts using Mossman's tetrazolium toxicity (MTT) assay. METHODS AND MATERIALS: A broth micro-dilution susceptibility test was used to determine the minimum inhibitory concentration (MIC) of each irrigant against E...
2016: Iranian Endodontic Journal
André Luiz Gomide de Morais, Ana Helena Gonçalves de Alencar, Cyntia Rodrigues de Araújo Estrela, Daniel Almeida Decurcio, Carlos Estrela
INTRODUCTION: The purpose of this clinical study was to compare the accuracy of working length (WL) determination using cone-beam computed tomography (CBCT), conventional periapical radiographies and electronic apex locator. METHODS AND MATERIALS: This study was conducted during root canal treatment of 19 patients with a total of 30 single-rooted teeth diagnosed with apical periodontitis. After taking the initial parallel periapical radiographies, the initial file was advanced into the canal until the WL was detected by the apex locator...
2016: Iranian Endodontic Journal
Sina Kakooei, Mahshid Mostafavi, Masoud Parirokh, Saeed Asgary
INTRODUCTION: Quoting an article in well-known textbooks is held as a credit for that paper. The numbers of Iranian publications mentioned in endodontic textbooks have increased during recent years. The aim of this investigation was to evaluate the number of Iranian articles quoted in eminent endodontic textbooks. METHODS AND MATERIALS: Three known textbooks (Ingle's Endodontics, Seltzer and Bender's Dental Pulp and Cohen's Pathways of the Pulp) were chosen and all the editions of the textbooks since 2000 were investigated for quoted Iranian publications...
2016: Iranian Endodontic Journal
Sepanta Hosseinpour, Mohammad Javad Kharazifard, Akbar Khayat, Mandana Naseri
INTRODUCTION: It is essential for clinicians to have knowledge about root canal configuration, although its morphology varies largely in different ethnicities and even in different individuals within the same ethnic group. The current study reviewed the root canal configuration of root canals in mandibular first and second premolars among Iranian population based on independent epidemiological studies. METHODS AND MATERIALS: A comprehensive search was conducted on retrieved articles related to root canal configuration and prevalence of each types of root canal in mandibular premolars based on Vertucci's classification...
2016: Iranian Endodontic Journal
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