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F Ferreira, I Barbosa, P Scelza, D Russano, J Neff, M Montagnana, M Zaccaro Scelza
AIM: To describe a new method for the assessment of nanoscale alterations in the surface topography of nickel-titanium endodontic instruments using a high-resolution optical method, and to verify the accuracy of the technique. METHODOLOGY: Noncontact three-dimensional optical profilometry was used to evaluate defects on a size 25, .08 taper reciprocating instrument (WaveOne(®) ), which was subjected to a cyclic fatigue test in a simulated root canal in a clear resin block...
October 1, 2016: International Endodontic Journal
Bruno Carvalho Vasconcelos, Luzia Mesquista Bastos, Ariany Souza Oliveira, Ricardo Affonso Bernardes, Marco Antonio Hungaro Duarte, Nilton Vivacqua-Gomes, Rodrigo Ricci Vivan
INTRODUCTION: The aim of this study was to determine the variations in root canal length (RCL) occurring during endodontic treatment stages (initial, preflared, and concluded) and correlate them with the accuracy of Root ZX II (RZX). METHODS: After coronal access, 26 mandibular molars had the apical foramen of the 52 mesial canals standardized (250 μm) and their respective initial RCL was recorded (RCL1 = initial) by using a clinical microscope (×16) and manual K-file instruments...
September 9, 2016: Journal of Endodontics
Sérgio Luiz Pinheiro, Giuliana Rodrigues Azenha, Yasmin Marialva Democh, Daniela Camila Nunes, Silvia Provasi, Giovana Masiero Fontanetti, Danilo Antônio Duarte, Carlos Eduardo Fontana, Carlos Eduardo da Silveira Bueno
OBJECTIVE: The present study sought to evaluate the antimicrobial activity against Enterococcus faecalis of photodynamic therapy applied before and after reciprocating instrumentation of permanent molars. BACKGROUND: Apical extrusion of debris can cause flare-ups due to introduction of bacteria into the periapical tissues. METHODS: Eighteen mesial roots from permanent mandibular molars were selected. The crowns were removed to obtain a standard root length of 15 mm...
August 25, 2016: Photomedicine and Laser Surgery
Neha Deepak Khalap, Sharad Kokate, Vibha Hegde
AIM: To compare the smear layer and debris removal in root canals instrumented with two different kinematic motions after ultrasonic and sonic irrigation activation. MATERIALS AND METHODS: Eighty freshly extracted teeth were selected for the study and randomly divided the samples into two groups (n = 40) for instrumentation with either rotary ProTaper NEXT (PTN) or reciprocating WaveOne (WO) file systems. These (n = 40) were further divided into two groups (n = 20) where the final irrigant was activated using either Ultrasonics (Passive Ultrasonic Irrigation; PUI) or Sonics (EndoActivator; EA)...
July 2016: Journal of Conservative Dentistry: JCD
Jogikalmat Krithikadatta, Vadhana Sekar, Paramanantham Sudharsan, Natanasabapathy Velumurugan
AIM: This randomized, controlled trial evaluated the incidence of postinstrumentation pain on using two different rotary Ni-Ti and one reciprocating Ni-Ti cleaning and shaping systems. MATERIALS AND METHODS: Asfter sample size estimation, a total of 152 patients were randomized to three groups (Group WO [WaveOne], Group PU [ProTaper Universal], and Group Mt [Mtwo]). Selection of patients was based on root curvature, periapical lesion, vitality, gender, and diagnosis of the patient...
July 2016: Journal of Conservative Dentistry: JCD
Rafael Rodrigues Soares de Magalhães, Lígia Carolina Moreira Braga, Érika Sales Joviano Pereira, Isabella Faria da Cunha Peixoto, Vicente Tadeu Lopes Buono, Maria Guiomar de Azevedo Bahia
OBJECTIVE: The aim of this study was to assess the influence of clinical use, in vivo, on the torsional behavior of Reciproc and WaveOne instruments considering the possibility that they degraded with use. MATERIAL AND METHODS: Diameter at each millimeter, pitch length, and area at 3 mm from the tip were determined for both types of instruments. Twenty-four instruments, size 25, 0.08 taper, of each system were divided into two groups (n=12 each): Control Group (CG), in which new Reciproc (RC) and WaveOne Primary (WO) instruments were tested in torsion until rupture based on ISO 3630-1; and Experimental Group (EG), in which each new instrument was clinically used to clean and shape the root canals of one molar...
July 2016: Journal of Applied Oral Science: Revista FOB
Taha Özyürek
INTRODUCTION: The purpose of this study was to compare the cyclic fatigue resistance of Reciproc R25 (VDW, Munich, Germany), WaveOne Primary (Dentsply Maillefer, Ballaigues, Switzerland), and WaveOne Gold Primary files (Dentsply Maillefer). METHODS: Twenty Reciproc R25, 20 WaveOne Primary, and 20 WaveOne Gold Primary instruments were included in this study. The cyclic fatigue tests were performed using a cyclic fatigue testing device, which has an artificial stainless steel canal with a 60° angle of curvature and a 5-mm radius of curvature...
October 2016: Journal of Endodontics
Sang Won Kwak, Gary Shun-Pan Cheung, Jung-Hong Ha, Sung Kyo Kim, Hyojin Lee, Hyeon-Cheol Kim
OBJECTIVES: This study aimed to compare two nickel-titanium systems (rotary vs. reciprocating) for their acceptance by undergraduate students who experienced nickel-titanium (NiTi) instruments for the first time. MATERIALS AND METHODS: Eighty-one sophomore dental students were first taught on manual root canal preparation with stainless-steel files. After that, they were instructed on the use of ProTaper Universal system (PTU, Dentsply Maillefer), then the WaveOne (WO, Dentsply Maillefer)...
August 2016: Restorative Dentistry & Endodontics
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
Helena Lim, Fang-Chi Li, Shimon Friedman, Anil Kishen
INTRODUCTION: Residual microstrain influences the resistance to crack propagation in a biomaterial. This study evaluated the residual microstrain and microdefects formed in dentin after canal instrumentation in teeth maintained in hydrated and nonhydrated environments. METHODS: Canals of 18 extracted human premolars with single-root canals were instrumented in accordance with 3 groups: the ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) group: ProTaper Universal (S1, S2, F1, and F2) used in rotation, the WaveOne Primary (Dentsply Maillefer) group: the WaveOne (Primary) used in reciprocal motion, and the control group: hand files...
September 2016: Journal of Endodontics
Marcelo Santos Coelho, Steven J Card, Peter Z Tawil
INTRODUCTION: The objective of this study was to use light-emitting diode (LED) transillumination to assess the presence of dentinal defects in roots instrumented with 3 different root canal preparation systems: ProFile (Dentsply Tulsa Dental Specialties, Tulsa, OK), TRUShape (Dentsply Tulsa Dental Specialties), and WaveOne Gold (Dentsply Tulsa Dental Specialties). METHODS: Eighty mesial roots of mandibular molars presenting 2 canals were randomly divided into 4 different groups (n = 20) as follows: the control group, no root canal preparation was performed; the ProFile group, root canals were prepared with nickel-titanium ProFile sizes 20...
September 2016: Journal of Endodontics
Fabio de Almeida-Gomes, Humberto Ramah Menezes de Matos, Rodrigo Ferreira Lopes Arrais Nunes, Ariel Moura Arrais, Claudio Ferreira-Maniglia, Marcelo de Morais Vitoriano, Eduardo Diogo Gurgel-Filho
OBJECTIVE: The objective of this study is to compare the cyclic fatigue resistance of nine types of endodontic instruments of nickel-titanium. MATERIALS AND METHODS: Five files of 25 mm of length of each group: Reciproc (RC) R25; WaveOne (WO) Primary; Unicone (UC) L25 25/0.06; K3XF 25/0.06; ProTaper Universal F2 (PTF2); ProTaper Next X2 (PTX2); Mtwo 25/0.06; BioRaCe 25/0.06; One Shape L25 25/0.06 were subjected to a cyclic fatigue resistance test on a mechanical apparatus...
May 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Rahmi Eken, Ozgur Genc Sen, Gurcan Eskitascioglu, Sema Belli
INTRODUCTION: This finite element analysis study was aimed at evaluating the effects of rotary systems on stresses in photopolymerized resin root models with oval-shaped canals. METHODS: Among the data collected by computed tomographic imaging, a mandibular second premolar tooth with an oval-shaped canal was selected, recorded as Digital Imaging and Communications in Medicine, and transferred to Materialise's Interactive Medical Image Control System software. Three-dimensional modeling was performed to produce photopolymerized resin root models...
August 2016: Journal of Endodontics
H S Topçuoğlu, S Düzgün, A Aktı, G Topçuoğlu
AIM: To compare the resistance to cyclic fatigue of WaveOne Gold (WOG), Reciproc, and WaveOne (WO) nickel-titanium files in an artificial root canal with a double (S-shaped) curvature. METHODOLOGY: A total of 120 new WOG primary, Reciproc R25, and WO primary files were tested in an artificial, stainless steel canal with an S-shape (diameter, 1.4 mm and length, 18 mm). Forty files from each system were rotated until fracture to calculate the number of cycles to failure (NCF)...
June 25, 2016: International Endodontic Journal
Alexander Pompermayer Jardine, Ricardo Abreu da Rosa, Manuela Favarin Santini, Ivana Maria Zaccara, Marcus Vinicius Reis Só, Patrícia Maria Poli Kopper
This study aimed to compare apical transportation, centering ratio, and working time during root canal preparation with Wizard Navigator (WN), WaveOne (WO), or ProTaper Universal (PT) and to describe deformation and fracture of these instruments. Thirty-six mesiobuccal roots from maxillary molars were micro-computed tomography (micro-CT) scanned and then sorted into three groups (n = 12): Wizard Navigator (WN), WaveOne (WO), and ProTaper Universal (PT). The root canals were prepared using WN, WO, or PT; the time of each canal preparation was timed; and the specimens were micro-CT re-scanned...
June 14, 2016: Brazilian Oral Research
Carla Cristina Camilo Araújo, Manoel Brito-Júnior, André Luís Faria-E-Silva, Rodrigo Dantas Pereira, Yara Terezinha Silva-Sousa, Antônio Miranda Cruz-Filho, Manoel Damião Sousa-Neto
The aim of the present study was to evaluate the bond strength (BS) of root canal fillings to root dentin using the reciprocating file-matched single-cone or lateral compaction techniques with resin-based and calcium-silicate-based sealers. Maxillary canine roots were prepared and filled using one of the following approaches: Reciproc R40 file and R40 single cone, WaveOne Large file and Large single cone, or ProTaper up to F4 file with lateral compaction. The root filling was performed using AH Plus, Epiphany SE or MTA Fillapex (n = 10)...
May 20, 2016: Brazilian Oral Research
Paramasivam Vivekanandhan, Arunajatesan Subbiya, Suresh Mitthra, Arumugam Karthick
BACKGROUND: Postoperative inflammation and endodontic failure occur due to apical extrusion of debris. AIM: To evaluate the amount of apically extruded debris after preparation of straight root canals in extracted human teeth using three rotary systems. MATERIALS AND METHODS: Sixty single-rooted human teeth with single root canal and apical foramen were selected and randomly divided into three experimental groups (n = 20) according to the rotary system used: Group 1 - ProTaper, Group 2 - Revo-S, Group 3 - WaveOne...
May 2016: Journal of Conservative Dentistry: JCD
N O Varghese, Rajesh Pillai, U-Nu Sujathen, Shan Sainudeen, Abe Antony, Sinju Paul
AIMS: The purpose of this study was to evaluate the resistance to torsional failure and cyclic fatigue resistance of ProTaper Next (PTN), WaveOne, and Mtwo files in continuous and reciprocating motion. SETTINGS AND DESIGN: Randomized control trial in a tertiary care setting. SUBJECTS AND METHODS: A total of 10 new size 25.06 taper PTN X2, 25.06 taper Mtwo files, and 25.08 taper WaveOne primary files each was selected. A custom fabricated cyclic fatigue testing device with a 70° angle of curvature and 3 mm width; curvature starting at 6 mm from the tip was used...
May 2016: Journal of Conservative Dentistry: JCD
Emmanuel João Nogueira Leal Silva, Vania Cristina Gomes Vieira, Michele Dias Nunes Tameirão, Felipe Gonçalves Belladonna, Aline de Almeida Neves, Erick Miranda Souza, Gustavo DE-Deus
The purpose of this study was to assess the ability of an off-centered rectangular design system [ProTaper Next (PTN)] to maintain the original profile of the root canal anatomy. To this end, ProTaper Universal (PTU), Reciproc (R) and WaveOne (WO) systems were used as reference techniques for comparison. Forty clear resin blocks with simulated curved root canals were randomly assigned to 4 groups (n = 10) according to the instrumentation system used: PTN, PTU, R and WO. Color stereomicroscopic images of each block were taken before and after instrumentation...
2016: Brazilian Oral Research
Mustafa Murat Koçak, Sibel Koçak, Sevinç Aktemur Türker, Baran Can Sağlam
AIM: The aim of this study was to compare the efficacy of hand file, nickel titanium rotary instrument, and two reciprocating instruments for removing gutta-percha and sealer from the root canals. MATERIALS AND METHODS: Eighty-eight mandibular premolar teeth were used. The root canals were shaped and filled with gutta-percha and a resin-based sealer. The specimens were divided into four groups according to the technique by which the root filling material was removed: Group 1 - Wave One; Group 2 - Reciproc; Group 3 - ProTaper; and Group 4 - Gates-Glidden burs and stainless steel hand file...
March 2016: Journal of Conservative Dentistry: JCD
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