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https://www.readbyqxmd.com/read/28210445/evaluation-of-conventional-protaper-hand-and-protaper-rotary-instrumentation-system-for-apical-extrusion-of-debris-irrigants-and-bacteria-an-in-vitro-randomized-trial
#1
Pinky Kalra, Arathi Rao, Ethel Suman, Ramya Shenoy, Baranya-Shrikrishna Suprabha
BACKGROUND: Endodontic instrumentation carries the risk of over extrusion of debris and bacteria. The technique used and the type of instrumentation influences this risk. AIM: The purpose of this study was to evaluate and compare the K-file, ProTaper hand and ProTaper rotary instrumentation systems for the amount of apically extruded debris, irrigant solution and intracanal bacteria. DESIGN: Experimental single blinded randomized type of in vitro study with sample of 30 single rooted teeth...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28203015/-effect-of-thermal-conductivity-on-apical-sealing-ability-of-4-dental-gutta-percha-cones
#2
C Fan, C Y Yuan, J C Zhang, X Y Wang
OBJECTIVE: To investigate the effect of thermal conductivity on the apical sealing ability of different dental gutta-percha cones during the warm vertical condensation obturation. METHODS: Four kinds of dental gutta-percha cones were used in this study: Bio-GP points (BP, B&L, Korea), large-tapered gutta-percha (DP, DENTSPLY, America), PROTAPER Universal gutta-percha points (DPP, DENTSPLY, America) and mtwo gutta-percha points (VP, VDW, Germany). Volume differences method was used to determine the main components and the thermal conductivity determinator was used to measure the thermal conductivity of these dental gutta-percha cones...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28198973/influence-of-niti-alloy-on-the-root-canal-shaping-capabilities-of-the-protaper-universal-and-protaper-gold-rotary-instrument-systems
#3
Jussaro Alves Duque, Rodrigo Ricci Vivan, Bruno Cavalini Cavenago, Pablo Andrés Amoroso-Silva, Ricardo Affonso Bernardes, Bruno Carvalho de Vasconcelos, Marco Antonio Hungaro Duarte
Objective: This study aimed to evaluate the influence of the NiTi wire in Conventional NiTi (ProTaper Universal PTU) and Controlled Memory NiTi (ProTaper Gold PTG) instrument systems on the quality of root canal preparation. Material and Methods: Twelve mandibular molars with separate mesial canals were scanned using a high-definition microcomputed tomography system. The PTU and PTG instruments were used to shape twelve mesial canals each. The canals were scanned after preparation with F2 and F3 instruments of the PTU and PTG systems...
January 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28194749/apical-transportation-of-proglider-and-protaper-next-activated-with-different-motions
#4
Hakan Arslan, Damla O Kırıcı, Ahmet D Uygun, Ruslan Khalilov, Yahya Güven, Ertuğrul Karataş, Halit Aladağ
PURPOSE: The aim of this study was to investigate the apical transportation of the ProGlider and ProTaper Next using 3 different motions (150° clockwise [CW]; 0° counter clockwise [CCW], 270° CW-30° CCW; and [360° CW] continuous rotation). MATERIALS AND METHODS: 36 simulated, curved, plastic training blocks were randomly distributed into 3 groups for treatment according to the movement kinematics used for ProGlider (Dentsply Maillefer) followed by ProTaper Next (Dentsply Maillefer) instruments (n = 12): 150° CW-30° CCW, 270° CW-30° CCW, and 360° CW (continuous rotation)...
February 11, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28194365/antibacterial-effect-of-urushiol-on-e-faecalis-as-a-root-canal-irrigant
#5
Sang-Wan Kim, Dong-Hoon Shin
OBJECTIVES: The purpose of this study was to compare the antibacterial activity of urushiol against Enterococcus faecalis (E. faecalis) to that of NaOCl. MATERIALS AND METHODS: The canals of thirty two single rooted human teeth were instrumented with Ni-Ti files (ProTaper Next X1, X2, X3, Dentsply). A pure culture of E. faecalis ATCC 19433 was prepared in sterile brain heart infusion (BHI) broth. The teeth were submerged in the suspension of E. faecalis and were incubated at 37℃ for 7 days to allow biofilm formation...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28194362/effect-of-adaptive-motion-on-cyclic-fatigue-resistance-of-a-nickel-titanium-instrument-designed-for-retreatment
#6
Taha Özyürek, Koray Yılmaz, Gülşah Uslu
OBJECTIVES: The aim of this study was to evaluate the cyclic fatigue resistance of the ProTaper Universal D1 file (Dentsply Maillefer) under continuous and adaptive motion. MATERIALS AND METHODS: Forty ProTaper Universal D1 files were included in this study. The cyclic fatigue tests were performed using a dynamic cyclic fatigue testing device, which had an artificial stainless steel canal with a 60° angle of curvature and a 5 mm radius of curvature. The files were randomly divided into two groups (Group 1, Rotary motion; Group 2, Adaptive motion)...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28190587/influence-of-cyclic-flexural-deformation-on-the-torsional-resistance-of-controlled-memory-and-conventional-nickel-titanium-instruments
#7
Eufemia Carolina Peláez Acosta, Pedro Damas Resende, Isabella Faria da Cunha Peixoto, Érika Sales Joviano Pereira, Vicente Tadeu Lopes Buono, Maria Guiomar de Azevedo Bahia
INTRODUCTION: The aim of this study was to evaluate the influence of cyclic deformation on the torsional resistance of controlled memory (CM) nickel-titanium files in comparison with superelastic (SE) instruments with similar geometric and dimensional characteristics. METHODS: New 30/.06 HyFlex (HF; Coltene/Whaledent, Inc, Cuyahoga Falls, OH), Typhoon (Clinician's Choice Dental Products, New Milford, CT), RaCe (FKG, La-Chaux De Fonds, Switzerland), and ProTaper Universal F2 instruments (F2; Dentsply Maillefer, Ballaigues, Switzerland) were assessed...
February 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28186862/comparison-of-conventional-syringe-canalbrush-endoactivator-photon-induced-photoacoustic-streaming-and-manual-instrumentation-in-removing-orange-brown-precipitate-an-in-vitro-study
#8
Mehmet Burak Guneser, Asiye Nur Dincer, Dilara Arslan
OBJECTIVE: The aim of this in vitro study was to compare the various techniques for removing precipitate formed after irrigation with sodium hypochlorite (NaOCl) and chlorhexidine (CHX). BACKGROUND DATA: It is still unclear whether different irrigant activation systems can effectively remove precipitate that is firmly attached to the root canal walls. METHODS: Eighty-two extracted single-rooted human teeth were instrumented by using the ProTaper rotary system...
February 10, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28182065/comparative-evaluation-of-canal-cleaning-ability-of-various-rotary-endodontic-filesin-apical-third-a-scanning-electron-microscopic-study
#9
Ganesh Ranganath Jadhav, Priya Mittal, Anish Kulkarni, Shibli Syed, Ravikiran Bagul, Saina Elahi, Dheeraj Kalra
BACKGROUND: The purpose of this study was to evaluate the canal cleaning ability of three novel endodontic rotary instruments and compare with ProTaper files as a control in apical third of root canals under scanning electron microscopy (SEM). MATERIALS AND METHODS: Eighty freshly extracted mandibular premolars were selected according to inclusion criteria. Buccal cusp tips were ground to ensure having a flat coronal reference point with a total tooth length of 16 mm for all samples...
November 2016: Dental Research Journal
https://www.readbyqxmd.com/read/28179925/scanning-electron-microscopic-evaluation-of-smear-layer-removal-using-isolated-or-interweaving-edta-with-sodium-hypochlorite
#10
Ângelo José da Silva Beraldo, Rogério Vieira Silva, Alberto Nogueira da Gama Antunes, Frank Ferreira Silveira, Eduardo Nunes
INTRODUCTION: The aim of this study was to verify the effect of alternating 2.5% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) on the smear layer removal from root canal surfaces. METHODS AND MATERIALS: A total of 15 single-rooted human teeth, instrumented with ProTaper files, were randomly distributed in 3 groups. In group 1 (n=7) the canals were irrigated with 1 mL of 2.5% NaOCl between files and final irrigation was done with 1 mL of 2,5% NaOCl, followe by 1 mL of 17% EDTA, for a perio of 15 sec with new irrigtion of 1 mL of 2,5% NaOCl at each change of files...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179924/fracture-resistance-of-roots-after-application-of-different-sealers
#11
Fatemeh Dibaji, Farzaneh Afkhami, Babak Bidkhori, Mohammad Javad Kharazifard
INTRODUCTION: Vertical root fracture inevitably leads to tooth extraction. Thus, root filling with obturating materials and sealers that can reinforce the tooth would be an ideal way to reduce fracture in root treated teeth. This study aimed to assess the fracture resistance of roots following the application of different sealers including Epiphany, iRoot sealer and AH-plus. METHODS AND MATERIALS: Fifty extracted human single-canal premolars without caries, curvature or cracks were used in this study...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179923/transportation-and-centering-ability-of-neoniti-and-protaper-instruments-a-cbct-assessment
#12
Zahrasadat Madani, Ali Soleymani, Tasnim Bagheri, Ehsan Moudi, Ali Bijani, Vahid Rakhshan
INTRODUCTION: Transportation is an important iatrogenic endodontic error which might cause failure. This study evaluated the canal transportation caused by Neoniti and ProTaper instruments, using cone-beam computed tomography (CBCT) cross sections. METHODS AND MATERIALS: This in vitro experimental study was performed on 40 mesiobuccal roots of maxillary first molars. The teeth were scanned with CBCT. They were randomly divided into 2 groups (n=20) that were prepared using either Neoniti or ProTaper files...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179922/scanning-electron-microscopic-evaluation-of-the-sealer-dentine-interface-of-three-sealers
#13
Fatemeh Mohammadian, Farzad Farahanimastary, Fatemeh Dibaji, Mohammad Javad Kharazifard
INTRODUCTION: This study aimed to evaluate the dentine-sealer interface in three different sealers using scanning electron microscopy (SEM). METHODS AND MATERIALS: Thirty extracted human single-rooted teeth were prepared using ProTaper rotary files and were randomly divided into three groups (n=10) including BC Sealer, AH-Plus and Dorifill. The root canals were filled with cold lateral condensation technique and stored for 7 days in 100% humidity at 37(°)C. Cross sections were prepared from the coronal, middle, and apical sections of the roots...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179921/in-vitro-comparison-of-apical-debris-extrusion-using-rotary-and-reciprocating-systems-in-severely-curved-root-canals
#14
Abbas Delvarani, Nahid Mohammadzadeh Akhlaghi, Raana Aminirad, Sohrab Tour Savadkouhi, Seyed Aliakbar Vahdati
INTRODUCTION: The aim of this in vitro study was to compare the amount of apically extruded debris after root canal preparation using rotary and reciprocating systems in severely curved root canals. METHODS AND MATERIALS: Thirty six extracted human mandibular first molars with 25-35(°) curvature in their mesiobuccal (MB) canal (according to Schneider's method) were cleaned and shaped with ProTaper and WaveOne systems. The extruded debris was collected and their net weight was calculated...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28179920/cbct-assessment-of-root-dentine-removal-by-gates-glidden-drills-and-two-engine-driven-root-preparation-systems
#15
Azade Harandi, Fatemeh Mohammadpour Maleki, Ehsan Moudi, Maryam Ehsani, Soraya Khafri
INTRODUCTION: The aim of this study was to compare the dentine removing efficacy of Gates-Glidden drills with hand files, ProTaper and OneShape single-instrument system using cone-beam computed tomography (CBCT). METHODS AND MATERIALS: A total of 39 extracted bifurcated maxillary first premolars were divided into 3 groups (n=13) and were prepared using either Gates-Glidden drills and hand instruments, ProTaper and OneShape systems. Pre- and post-instrumentation CBCT images were obtained...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28162017/postoperative-pain-after-the-removal-of-root-canal-filling-material-using-different-techniques-in-teeth-with-failed-root-canal-therapy-a-randomized-clinical-trial
#16
Hüseyin Sinan Topçuoğlu, Gamze Topçuoğlu
OBJECTIVES: This study evaluated the intensity and duration of postoperative pain after the removal of root canal filling material in retreatment procedures of upper incisor teeth with chronic apical periodontitis, using different techniques. MATERIALS AND METHODS: One hundred and thirty-five patients requiring retreatment of upper incisor teeth with chronic apical periodontitis were included in the study. The patients were assigned to three groups of 45 patients, according to the method used to remove old canal filling material...
February 5, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28154314/effectiveness-of-x-ray-computed-microtomography-to-determine-structureproperty-relationships-of-gutta-percha
#17
Liudi Zhang, Christopher Joubert, George Bruder, Kai Yang, Alexa Aseel-Fine, Keith Jones, Miriam Rafailovich
We have shown that Computed Microtomography (CMT) is able to map the internal distribution of the filler particles in ProTaper(TM), Lexicon(TM), and GuttaCore(TM) materials, and explain the differences in their tensile and ductility properties, prior to mechanical manipulation. Working of uncrosslinked ProTaper™ and Lexicon(TM) samples resulted in a five-fold increase in ductility and the tensile elongation at break. CMT mapping of the internal structure showed that large, periodic, striations formed across the interior of the sample corresponding to the formation of regions with low filler particle density...
February 1, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28149464/sealing-efficacy-of-system-b-versus-thermafil-and-guttacore-obturation-techniques-evidenced-by-scintigraphic-analysis
#18
Manuel Marques-Ferreira, Margarida Abrantes, Hugo-Diogo Ferreira, Francisco Caramelo, Maria-Filomena Botelho, Eunice-Virgínia Carrilho
BACKGROUND: This study compared root canal sealing ability, filled by Continuous Wave compaction and two carrier-based obturation systems, using the nuclear medicine approach. MATERIAL AND METHODS: Fifty-five single-rooted extracted teeth were selected. The crowns were sectioned and each tooth was instrumented using rotary Protaper® Universal system. The roots were divided into 3 experimental groups and two control groups. Forty-five root canals were filled, using Continuous Wave, GuttaCore or Thermafil system and TopSeal sealer...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28146218/influence-of-solvents-on-the-bond-strength-of-resin-sealer-to-intraradicular-dentin-after-retreatment
#19
Marcelo Palhais, Manoel Damião Sousa-Neto, Fuad Jacob Abi Rached-Junior, Mariana Carvalho de Andrade Amaral, Edson Alfredo, Carlos Eduardo Saraiva Miranda, Yara Teresinha Corrêa Silva-Sousa
This study evaluated the removal of filling material with ProTaper Universal Rotary Retreatment system (PTR) combined with solvents and the influence of solvents on the bond strength (PBS) of sealer to intraradicular dentin after canal reobturation. Roots were endodontically treated and distributed to five groups (n = 12). The control group was not retreated. In the four experimental groups, canals were retreated with PTR alone or in combination with xylol, orange oil, and eucalyptol. After filling material removal, two specimens of each group were analysed by SEM and µCT to verify the presence of filling remnants on root canal walls...
January 26, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28131411/effectiveness-of-the-protaper-next-and-reciproc-systems-in-removing-root-canal-filling-material-with-sonic-or-ultrasonic-irrigation-a-micro-computed-tomographic-study
#20
Milena Perraro Martins, Marco Antonio Hungaro Duarte, Bruno Cavalini Cavenago, Augusto Shoji Kato, Carlos Eduardo da Silveira Bueno
INTRODUCTION: The aim of this study was to evaluate the effectiveness of ProTaper Next (Dentsply Maillefer, Ballaigues, Switzerland) and Reciproc (VDW, Munich, Germany) systems in removing filling material from oval root canals using sonic or ultrasonic irrigation as additional cleaning methods. METHODS: Thirty-two human extracted mandibular premolars with oval canals were prepared using the ProTaper Universal system (Dentsply Maillefer) up to instrument F4 (40/...
January 25, 2017: Journal of Endodontics
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