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Negar Delgoshayi, Mansoure Abbasi, Hengameh Bakhtiar, Shirin Sakhdari, Setareh Ghannad, Mohammad Reza Ellini
Introduction: Maintaining the original central canal path is an important parameter in efficient root canal preparation. Instruments causing minimal changes in original canal path are preferred for this purpose. This study sought to compare canal transportation and centering ability of ProTaper and SafeSider instruments in curved mesiobuccal root canals of mandibular first molars using cone beam computed tomography (CBCT). Methods and Materials: In this experimental study, 30 mesiobuccal root canals of extracted human mandibular first molars with 20° to 40° curvature were randomly divided into two groups ( n =15)...
2018: Iranian Endodontic Journal
Marcely Cassimiro, Kaline Romeiro, Luciana Gominho, Andressa de Almeida, Lívia Silva, Diana Albuquerque
Introduction: The aim of this study was to analyse the potential occurrence of dentinal defects after root canal preparation using three engine-driven instruments. Methods and Materials: Eighty permanent mandibular incisors were selected. Twenty teeth did not undergo preparation, and the remaining teeth were divided into three groups ( n =20): Reciproc (REC) , ProTaper Next (PTN) and WaveOne Gold (WOG). The samples were dyed with methylene blue, sectioned perpendicularly to the long axis in 3-, 6- and 9-mm slices and were finally observed under a stereomicroscope (under 25×)...
2018: Iranian Endodontic Journal
Gustavo Alberto Rubino, George Táccio de Miranda Candeiro, Laila Gonzales Freire, Elaine Faga Iglecias, Érico de Mello Lemos, Celso Luiz Caldeira, Giulio Gavini
Introduction: The aim of the present ex vivo research was to compare the remaining filling material and the volumes of dentine removed after retreatment of curved canals with two rotary systems naming ProTaper Universal Retreatment and Mani NRT-GPR using micro-computed tomography (micro-CT). Methods and Material: Forty mandibular molars containing two completely separated canals, with curvature angle of 25-35° and a curvature radius <10 mm were prepared to the Mtwo instrument 35/0...
2018: Iranian Endodontic Journal
Elham Khoshbin, Zakiyeh Donyavi, Erfan Abbasi Atibeh, Ghodratollah Roshanaei, Faranak Amani
Introduction: Endodontic rotary systems may result in dentinal cracks. They may propagate to vertical root fracture that compromises the outcome of endodontic treatment. This study aimed to compare Neolix and Reciproc (single-file systems), Mtwo and ProTaper (conventional rotary systems) in terms of dentinal crack formation in root canal walls. Methods and Materials: This in vitro study was conducted on 110 extracted human single-rooted teeth. The teeth were randomly divided into four experimental groups ( n =25) for root canal preparation with Neolix, Reciproc, Mtwo and ProTaper systems and two control groups ( n =5)...
2018: Iranian Endodontic Journal
Hesam Mirmohammadi, Monika Sitarz, Hagay Shemesh
Introduction: Manufacturers offer gutta-percha (GP) cones matched with different sizes of endodontic files as an attempt to simplify the obturation process and create a tight seal in the canal. The purpose of this study was to evaluate whether intra-manufacture GP diameters matched the diameters of their corresponding files at different levels using laser micrometre. Methods and Materials: Twenty files and corresponding GP master cones of Reciproc R40 (40/0.06) (VDW, Munich, Germany), WaveOne Large(40/0...
2018: Iranian Endodontic Journal
Emel Uzunoglu-Özyürek, Özge Erdoğan, Sevinç Aktemur Türker
INTRODUCTION: The purpose of this study was to evaluate the effect of calcium hydroxide (Ca[OH]2 ) dressing on the dentinal tubule penetration of epoxy resin-based sealer (AH 26; Dentsply Maillefer, Ballaigues, Switzerland) and tricalcium silicate-based sealer (BioRoot RCS; Septodont, Saint Maurdes Fosses, France). METHODS: Fifty-two single-rooted mandibular premolars were used. Four samples were assigned as the positive control. Twenty-four samples received Ca(OH)2 labeled with rhodamine B, whereas the rest did not...
April 18, 2018: Journal of Endodontics
Ibrahim H Abu-Tahun, Sang Won Kwak, Jung-Hong Ha, Hyeon-Cheol Kim
This study compared the microscopic features of the fractured endodontic nickel-titanium (NiTi) rotary instruments by two different torsional loadings: repetitive torsional loading (RTL) and single torsional loading (STL) based on the International Organization for Standardization (ISO). ProTaper Next, HyFlex EDM, and V-Taper 2 were compared in this study. In the STL method, the torsional load was applied after fixing the 3 mm tip of the file, by continuous clockwise rotation (2 rpm) until fracture. In the RTL method, a preset rotational loading (0...
2018: Scanning
Sanjib Das, Prasanti Kumari Pradhan, S Lata, Sachidananda Prasad Sinha
Introduction: The purpose of this study was to compare the incidence of dentinal crack formation after root canal preparation using ProTaper Next, OneShape, and Hyflex electrodischarge machining (HEDM). Materials and Methods: A total of 75 extracted mandibular premolars were selected. The root canals were instrumented using ProTaper Next, OneShape, and HEDM rotary files. All roots were horizontally sectioned at 3, 6, and 9 mm from apex with slow-speed saw under water cooling...
March 2018: Journal of Conservative Dentistry: JCD
Mohamed Abdel Aziz Mohamed El Sayed, Hussam Al Husseini
Aim of the Study: The aim of this study was to compare the apical sealing ability of two single-cone filling materials when sealed with different types of root canal sealers. Materials and Methods: Eighty extracted maxillary and mandibular canines were selected and their crowns were cut. The root canals were prepared using ProTaper Universal rotary system until size F4 and then divided into seven experimental groups ( n = 10 each) and two control groups ( n = 5 each)...
March 2018: Journal of Conservative Dentistry: JCD
Ganesh Jeevanandan, Eapen Thomas
Objective: This present study was conducted to analyze the volumetric change in the root canal space and instrumentation time between hand files, hand files in reciprocating motion, and three rotary files in primary molars. Materials and Methods: One hundred primary mandibular molars were randomly allotted to one of the five groups. Instrumentation was done using Group I; nickel-titanium (Ni-Ti) hand file, Group II; Ni-Ti hand files in reciprocating motion, Group III; Race rotary files, Group IV; prodesign pediatric rotary files, and Group V; ProTaper rotary files...
January 2018: European Journal of Dentistry
Sherin Jose Chockattu, B S Deepak, K Mallikarjun Goud
Context: One of the important goals of root canal therapy is disinfection aided by irrigation and intracanal medicaments. Commonly used nonsteroidal anti-inflammatory agents have shown anti-bacterial activity, thus, when used as intracanal medicaments, nonantibiotic agents have the potential to provide anti-inflammatory, local analgesic, and anti-bacterial activity. Aim: The aim of this study is to evaluate and compare the anti-bacterial efficiency of anti-inflammatory nonantibiotics ibuprofen and diclofenac, and routinely used intracanal dressing calcium hydroxide (Ca[OH]2 ), against Enterococcus faecalis , in an endodontic model...
January 2018: Journal of Conservative Dentistry: JCD
Ajinkya M Pawar, Mansing G Pawar, Bhagyashree Thakur, Kulwinder Singh Banga, Alexander Maniangat Luke
Aim: The current study compared the fracture resistance of samples instrumented by two rotary files and a reciprocating file, obturated with gutta-percha and AH Plus. Materials and Methods: A total of 60 freshly extracted mandibular premolar teeth with single roots and single canals were acquired and decoronated at or below the cementoenamel junction. The samples were randomly divided into four groups ( n = 15). Group 1 control (noninstrumented/obturated), and for Groups 2-4 root canal instrumentation was done by EndoStar E5 (EE5), ProTaper NEXT (PTN), and WaveOne, respectively...
January 2018: Journal of Conservative Dentistry: JCD
Angsana Jainaen, Nipitporn Mahakunakorn, Uthaiwan Arayatrakullikit, Pipop Sutthiprapaporn, Rajda Noisombat
Aim: The aim of this study is to compare curved root canal preparation between reciprocal rotary files and rotational rotary files in extracted teeth using cone-beam computed tomography (CBCT). The independent variable was the file type (reciprocal vs. rotary), and the primary outcome variable was the centering ratio of distance change after canal preparation. Secondary outcomes were canal transportation in extension and direction and the preparation time. Materials and Methods: Forty mesial root canals from extracted permanent molars with curvatures ranging between 25° and 45° were randomly divided into 4 groups...
January 2018: Journal of Conservative Dentistry: JCD
Hüseyin S Topçuoğlu, Özge Ulusan, Gamze Topçuoğlu, Eda Biricik
AIM: In the present study, we evaluated the effect of the single-cone technique (SCT), cold lateral compaction (CLC), and wave vertical compaction (WVC) technique performed using two different sealers on the amount of apically extruded debris (AED) produced during the removal of canal filling material. METHODS: Ninety extracted mandibular premolars were prepared with ProTaper instruments. The teeth were then randomly assigned to six groups (N = 15) for root canal filling: (a) group 1, CLC+AH Plus; (b) group 2, SCT+AH Plus; (c) group 3, WVC+AH Plus; (d) group 4, CLC+MTA Fillapex; (e) group 5, SCT+MTA Fillapex; and (f) group 6, WVC+MTA Fillapex...
March 30, 2018: Journal of Investigative and Clinical Dentistry
Nagaraj Rashmi, Sachin V Shinde, Ahmed A Moiz, Tarun Vyas, Junaid A Shaik, Guneet Guramm
AIM: The purpose of the study is to evaluate the bacterial micro-leakage of three different materials, mineral trioxide aggregate (MTA), resin-modified glass ionomer cement (RMGIC), and flowable composite, as a coronal barrier against Enterococcus faecalis. MATERIALS AND METHODS: A total of 100 human extracted single-rooted teeth were selected. Access opening done, working length determined, and canals were cleaned and shaped with ProTaper F3 and obturated with AH26 and gutta-percha (GP) using lateral condensation technique...
March 1, 2018: Journal of Contemporary Dental Practice
Ricardo Machado, Alessandra Timponi Goes Cruz, Bianca Marques de Mattos de Araujo, Adriane Antoniw Klemz, Hellen Pontes Klug, Ulisses Xavier da Silva Neto
The aim of this study was to evaluate tubular dentin sealer penetration, comparing different final irrigation protocols using a conventional needle (CONV), EndoActivator system (EAS), EndoVac system (EVS), and ultrasound (PUI). Initially, fifty-two first maxillary molars with a single canal in the palatal root, without abrupt curvatures, resorptive processes, or previous endodontic treatment were selected for this study. Then, the crowns were sectioned to obtain palatal roots 15 mm in length. The root canals were prepared with the ProTaper Universal System and irrigated with 5% NaOCl...
March 23, 2018: Microscopy Research and Technique
B Buldur, C Hascizmeci, S Aksoy, M Nur Aydin, O N Guvendi
AIM: Apical extrusion of debris in primary root canal treatment has not been well elucidated. The purpose of this study is to compare the amount of apically extruded debris during the preparation of primary molar root canals using ProTaper, ProTaper Next, Self-adjusting File (SAF) and hand files. MATERIALS AND METHODS: One hundred sixty extracted primary mandibular molar teeth were assigned to 2 groups: Group 1: Resorbed (n=80) and Group 2: Non-resorbed (n=80) and randomly to four subgroups (n=20 teeth for each subgroup) according to the instruments used, ProTaper, ProTaper Next, SAF, and hand file...
March 2018: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
Kaoutar Laslami, Sara Dhoum, Amine El Harchi, Iman Benkiran
Objectives: The aim of the study is to define the relationship between the apical preparation diameter and the apical sealing ability to highlight the importance of the preservation of the diameter and the original position of the apical foramen. Materials and Methods: 50 extracted maxillary incisors were randomly allocated into three groups of 15 teeth each (n = 15) according to the apical preparation size: Group 1: finishing file F1 corresponding to size 20 reached the working length (ProTaper Universal system Dentsply®); Group 2: prepared up to size 30 corresponding to finishing file F30; Group 3: prepared up to size 50 corresponding to finishing file F5...
2018: International Journal of Dentistry
Hyun-Jin Park, Min-Seock Seo, Young-Mi Moon
Objectives: The aim of this study was to compare root canal volume change and canal transportation by Vortex Blue (VB; Dentsply Tulsa Dental Specialties), ProTaper Next (PTN; Dentsply Maillefer), and ProTaper Universal (PTU; Dentsply Maillefer) nickel-titanium rotary files in curved root canals. Materials and Methods: Thirty canals with 20°-45° of curvature from extracted human molars were used. Root canal instrumentation was performed with VB, PTN, and PTU files up to #30...
February 2018: Restorative Dentistry & Endodontics
Nghia Huynh, Fang-Chi Li, Shimon Friedman, Anil Kishen
INTRODUCTION: Pericervical dentin (PCD) loss may increase root fracture propensity in root-filled teeth. This study evaluated the impacts of bonding PCD with composite resin (CR) on radicular microstrain distribution and load at failure of root-filled maxillary premolars. METHODS: Ten single-canal maxillary premolars decoronated 2 mm coronal to the cementoenamel junction (CEJ) had canals enlarged with ProTaper Universal instruments (Dentsply Tulsa Dental Specialties, Tulsa, OK) to F3...
April 2018: Journal of Endodontics
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