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https://www.readbyqxmd.com/read/28092475/temperature-development-on-the-external-root-surface-during-laser-assisted-endodontic-treatment-applying-a-microchopped-mode-of-a-980%C3%A2-nm-diode-laser
#1
Franziska Beer, Eleftherios Terry R Farmakis, Josip Kopic, Christoph Kurzmann, Andreas Moritz
OBJECTIVE: The aim of this article was to investigate the temperature increase of the external root surface during laser-assisted endodontic treatment using a diode laser (980 nm) in a microchopped mode. METHODS: Ten freshly extracted, human maxillary incisors with mature apices were collected, prepared to size F4 at working length (ProTaper; Dentsply Maillefer, Ballaigues, Switzerland), mounted to a holder, and irradiated (using spiral movements in coronal direction) with a diode laser (GENTLEray 980 Classic Plus; KaVo, Biberach, Germany) with a 200 μm fiber in four different treatment groups: Group 1 (control group) was irradiated in six cycles of 5-sec irradiation/20-sec pause with 2...
January 12, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28068971/a-comparison-of-the-shaping-ability-of-three-nickel-titanium-rotary-instruments-a-micro-computed-tomography-study-via-a-contrast-radiopaque-technique-in-vitro
#2
Zhao Wei, Zhi Cui, Ping Yan, Han Jiang
BACKGROUND: Micro-CT (μCT) studies that combine simulated canals with meglucamine diatrizoate to evaluate the shaping ability of nickel-titanium (NiTi) rotary instruments are lacking in the literature. The purpose of this study was to evaluate the shaping ability of three new different nickel-titanium rotary instruments in simulated root canals using μCT. METHODS: Thirty simulated root canals with a curvature of 60° were randomly allocated into the following 3 groups (n = 10): Group 1, ProTaper Universal (PTU) rotary system; Group 2, Reciproc single-file system; and Group 3, K3XF rotary system...
January 9, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28068207/the-effect-of-diode-laser-on-planktonic-enterococcus-faecalis-in-infected-root-canals-in-an-ex-vivo-model
#3
Gilda Cretella, Carlo Lajolo, Raffaella Castagnola, Francesco Somma, MariaTeresa Inchingolo, Luca Marigo
OBJECTIVE: This study examined the bactericidal effect of diode laser irradiation against intracanal Enterococcus faecalis. METHODS AND MATERIALS: m total of 128 extracted single-rooted and single-canal teeth were treated with ProTaper instruments (Dentsply Maillefer, Ballaigues, Switzerland). A total of 120 root canals were inoculated with E. faecalis for 21 days, and the samples were randomly divided into five groups: Group 1 (n = 24) samples were irrigated with only saline solution (positive controls); Group 2 (n = 24) was treated with only 5...
January 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28050495/computed-tomography-evaluation-of-canal-transportation-and-volumetric-changes-in-root-canal-dentin-of-curved-canals-using-mtwo-protaper-and-protaper-next-rotary-system-an-in-vitro-study
#4
Mayuri Biccodu Shivashankar, Nandini Thippannanavar Niranjan, Arun Jayasheel, Mallikarjun Goud Kenchanagoudra
INTRODUCTION: Complete cleaning and shaping of root canal system is of paramount importance to achieve a successful root canal treatment. There are various rotary Ni-Ti systems available in the market to achieve mechanical goal of root canal preparation. But aggressive preparation of root canal with such systems would result in canal transportation and excess root dentin removal that would be one of the major reasons to decide the prognosis of root canal treated tooth. AIM: The present study was conducted to compare the root canal preparation in terms of canal transportation and volumetric changes in the root canal dentin among three Ni-Ti file systems, namely Mtwo, ProTaper (PT) and ProTaper NEXT (PTN) file system, using Computed Tomography (CT)...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28042263/efficacy-of-la-axxess-burs-gates-glidden-drills-and-protaper-sx-in-obtaining-straight-line-access-in-mesiobuccal-roots-of-mandibular-first-molars-a-cone-beam-computed-tomography-assessment
#5
Promila Verma, Rhythm Bains, A P Tikku, Anil Chandra, Shibha Mehta
OBJECTIVE: This study aims at cone-beam computed tomography (CBCT) evaluation of the ability of Gates Glidden (GG) drills, Protaper Sx, and LA Axxess burs to produce a straight line access (SLA) in mesiobuccal canals of mandibular first molars. METHODOLOGY: Forty-five freshly extracted mandibular teeth with a canal curvature of 10-20° were taken for the study and divided into three groups according to the instruments used for cervical preflaring: Group I (LA Axxess burs), Group II (GG drills), and Group III (Protaper Sx)...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28040502/a-comparison-between-effect-of-photodynamic-therapy-by-led-and-calcium-hydroxide-therapy-for-root-canal-disinfection-against-enterococcus-faecalis-a-randomized-controlled-trial
#6
Mohammad Asnaashari, Hengameh Ashraf, Afsaneh Rahmati, Neda Amini
BACKGROUND: Insufficient root canal disinfection is one of the main reasons for persistent periapical pathology. Photodynamic therapy (PDT) has been proven effective in disinfecting infected root canals. The aim of this study was to evaluate the antimicrobial effect of photo activated disinfection (PAD) when using toluidine blue as photosensitizer and a LED lamp after the conventional treatment, and comparing it with calcium hydroxide therapy in vivo. METHODS: This clinical trial includes 20 patients with molars requiring endodontic retreatment...
December 28, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28000644/comparative-analysis-of-cleaning-ability-of-three-nickel-titanium-rotary-systems-protaper-universal-k3-and-mtwo-an-in-vitro-scanning-electron-microscopic-study
#7
Ambar W Raut, Vijay Mantri, Aparna Palekar, Rupal Gadodia, Shubham Kala, Radha A Raut
BACKGROUND: Endodontic instruments including the nickel-titanium (NiTi) instruments produce debris and smear layer during instrumentation. The study was carried out to evaluate and compare the cleaning effectiveness of root canal preparation using three different rotary NiTi instrumentation systems - ProTaper Universal, K3 and Mtwo by means of scanning electron microscopy (SEM). METHODS: Thirty-six freshly extracted permanent mandibular molars were randomly divided into four groups: ProTaper Universal, K3, Mtwo system and control group...
October 2016: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/27994323/shaping-ability-of-reciprocating-motion-of-waveone-and-hyflex-in-moderate-to-severe-curved-canals-a-comparative-study-with-cone-beam-computed-tomography
#8
Gurram Samuel Simpsy, Girija S Sajjan, Padmaja Mudunuri, Jyothi Chittem, Nalam N V D Prasanthi, Pankaj Balaga
INTRODUCTION: M-Wire and reciprocating motion of WaveOne and controlled memory (CM) wire) of HyFlex were the recent innovations using thermal treatment. Therefore, a study was planned to evaluate the shaping ability of reciprocating motion of WaveOne and HyFlex using cone beam computed tomography (CBCT). METHODOLOGY: Forty-five freshly extracted mandibular teeth were selected and stored in saline until use. All teeth were scanned pre- and post-operatively using CBCT (Kodak 9000)...
November 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27989581/influence-of-temperature-on-cyclic-fatigue-resistance-of-protaper-gold-and-protaper-universal-rotary-files
#9
Gianluca Plotino, Nicola M Grande, Montse Mercadé, Luca Testarelli, Gianluca Gambarini
INTRODUCTION: The aim of this study was to evaluate the cyclic fatigue resistance of ProTaper Universal (PTU; Dentsply Maillefer, Baillagues, Switzerland) and ProTaper Gold (PTG, Dentsply Maillefer) nickel-titanium rotary files at room and intracanal temperatures. METHODS: A total of 120 files were used to test the cyclic fatigue resistance of PTU (S1 and F2) and PTG (S1 and F2) in an artificial canal at room temperature (20°C) and at intracanal temperature (35°C)...
December 15, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27986098/the-effects-of-torsional-preloading-on-the-torsional-resistance-of-nickel-titanium-instruments
#10
Seung-Hei Oh, Jung-Hong Ha, Sang Won Kwak, Shin Wook Ahn, WooCheol Lee, Hyeon-Cheol Kim
INTRODUCTION: This study evaluated the effect of torsional preloading on the torsional resistance of nickel-titanium (NiTi) endodontic instruments. METHODS: WaveOne Primary (Dentsply Maillefer, Ballaigues, Switzerland) and ProTaper Universal F2 (Dentsply Maillefer) files were used. The ultimate torsional strength until fracture was determined for each instrument. In the phase 1 experiment, the ProTaper and WaveOne files were loaded to have a maximum load from 2...
January 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27982234/morphological-study-and-analysis-of-microhardness-and-permeability-of-the-furcation-of-maxillary-premolars
#11
Tiago Elias Nascimento, Luis Eduardo Souza-Flamini, Regina Guenka Palma-Dibb, Ricardo Gariba Silva, Paulo Cesar Saquy, Jesus Djalma Pécora, Antonio Miranda Cruz-Filho
The morphology, microhardness and dentin permeability of the furcation region of maxillary premolars were evaluated. Ten premolars were cut lengthwise and the furcation region was delimited. In one group (n=10) microhardness was measured in the buccal, central and palatal regions, in the outer middle and inner layers of the furcation, and in the buccal and palatal regions adjacent to the furcation. Knoop hardness was tested with 10 g load for 15 s. Data were analyzed statistically by ANOVA and Tukey-Kramer test (a=0...
September 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27982176/on-the-causality-between-dentinal-defects-and-root-canal-preparation-a-micro-ct-assessment
#12
Gustavo De-Deus, Felipe Gonçalves Belladonna, Juliana Roter Marins, Emmanuel João Nogueira Leal Silva, Aline de Almeida Neves, Erick Miranda Souza, Alessandra de Castro Machado, Ricardo Tadeu Lopes, Marco Aurélio Versiani
This study aimed to evaluate the cause-effect relationship between canal preparation with ProTaper Universal (PTU) system and dentinal defects formation using micro-computed tomography (micro-CT) analysis. Forty mesial canals of mandibular molars with a type II Vertucci's canal configuration were scanned at an isotropic resolution of 14.16 µm. The sample was assigned to an experimental (n = 30) and a control (n = 10) groups, and the mesial canals were prepared with PTU system up to F2 instrument. The specimens from the experimental group were scanned and the cross-section images of the mesial roots, before and after preparation, were screened to identify the presence of dentinal defects...
October 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27965505/apical-extrusion-of-intracanal-bacteria-following-use-of-two-engine-driven-instrumentation-techniques-an-in-vitro-study
#13
Niyaz Mohammed, M C Noushad, Biji Balan, N Dhanesh, Nishi Jayasheelan, Vanita D Revankar
AIM: The aim of the present study was to compare in vitro the amount of debris extruded apically from extracted teeth, using Twisted files and ProTaper rotary during two different instrumentation systems. MATERIALS AND METHODS: Forty-five human single-rooted mandibular premolar teeth were randomly divided into three groups and contaminated with Enterococcus faecalis. The teeth in experimental groups were instrumented until reaching the working length with ProTaper rotary instruments and Twisted files with XSmart and XSmart Dual groups...
November 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27965498/shaping-ability-of-protaper-next-waveone-and-reciproc-in-simulated-root-canals
#14
E M Maia Filho, R M Dos Reis Santos, Darlon M Lima, S M da Silva Pereira, Janir A Soares, R R de Jesus Tavarez, Meire C Ferreira, Ceci N Carvalho, Matheus C Bandeca, Mateus R Tonetto, Alvaro H Borges, C de Castro Rizzi
INTRODUCTION: The study aimed to compare the shaping and preservation of the original curvature of simulated curved root canals using the following instruments: Reciproc (Rcp), WaveOne (Wo), and the ProTaper Next system (Ptn). MATERIALS AND METHODS: A total of 45 resin blocks with simulated curved root canals were divided into three groups (n = 15), prepared using the Rcp (R25), Wo (25/0.8), and Ptn (X2) instruments. Standardized photographs were taken before and after canal instrumentation...
November 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27965485/effect-of-intracanal-cryotherapy-and-negative-irrigation-technique-on-postendodontic-pain
#15
Talal Al-Nahlawi, Talaat Abo Hatab, Mahmoud Abd Alrazak, Ahmad Al-Abdullah
AIM: To evaluate the effect of intracanal cryotherapy with negative pressure irrigation (EndoVac) on postendodontic pain after vital single-visit root canal treatment (RCT). MATERIALS AND METHODS: A total of 75 single-rooted teeth with single root canal were treated endodontically. After root canal preparation with Protaper Universal rotary system and irrigation, teeth were divided randomly into three groups (n = 25) according to additional irrigation protocol as follows: Group I: No additional irrigation was applied (control); group II: A 20 mL of room temperature saline was irrigated during 5 minutes using EndoVac, and group III: A 20 mL of 2 to 4°C cold saline was irrigated during 5 minutes using EndoVac...
December 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27939728/comparative-analysis-of-dentinal-erosion-after-passive-ultrasonic-irrigation-versus-irrigation-with-reciprocating-activation-an-environmental-scanning-electron-study
#16
Ana Paula Simezo, Carlos Eduardo da Silveira Bueno, Rodrigo Sanches Cunha, Rina Andrea Pelegrine, Daniel Guimarães Pedro Rocha, Alexandre Sigrist de Martin, Augusto Shoji Kato
INTRODUCTION: The aim of this study was to assess ex vivo the erosive effects of passive ultrasonic irrigation versus irrigation with reciprocating activation on the dentinal surface of the root canal at 3 predetermined levels using environmental scanning electron microscopy. METHODS: Ten roots of mandibular premolars were prepared using the ProTaper Universal system (Dentsply Maillefer, Ballaigues, Switzerland). The specimens were embedded in flasks cleaved longitudinally, and indentations were made 3...
January 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27929924/effect-of-different-agitation-techniques-on-the-penetration-of-irrigant-and-sealer-into-dentinal-tubules
#17
Yu Gu, Hiran Perinpanayagam, David J W Kum, Yeon-Jee Yoo, Jin-Sun Jeong, Sang-Min Lim, Seok-Woo Chang, Seung-Ho Baek, Qiang Zhu, Kee-Yeon Kum
OBJECTIVE: The aim of this study was to compare the effectiveness of five intracanal agitation techniques on the penetration of irrigant and sealer into dentinal tubules. BACKGROUND DATA: Intracanal agitation techniques could promote chemomechanical debridement and the sealing of root canals during endodontic treatment. However, there is limited evidence for the agitation effect of Nd:YAP laser. MATERIALS AND METHODS: Human maxillary premolars with single straight canals (N = 60) were prepared with ProTaper Next(®) NiTi rotary files (Dentsply Maillefer) up to X4 (ISO 40 size)...
November 3, 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27901556/apical-transportation-during-removal-of-root-canal-filling-with-different-retreatment-systems
#18
Baran C Sağlam, Ersan Çiçek, Mustafa M Koçak, Sibel Koçak, Bağdagül H Kıvanç
INTRODUCTION: This study aimed to compare apical transportation during retreatment using ProTaper Universal retreatment (PTUR), Mtwo R and D-RaCe instruments in curved root canals. METHODS: 36 extracted mandibular molar teeth with curved mesiobuccal roots were selected. The teeth were embedded into acrylic blocks. The blocks were fixed on the experimental setup. After determining the working length (WL), mesiobuccal canals were prepared with ProTaper Universal rotary instruments to size F1 (20/0...
November 29, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27895347/comparison-of-fracture-and-deformation-in-the-rotary-endodontic-instruments-protaper-versus-k-3-system
#19
Sana Ehsen Nagi, Farhan Raza Khan, Munawar Rahman
This experimental study was done on extracted human teeth to compare the fracture and deformation of the two rotary endodontic files system namely K-3 and Protapers. It was conducted at the dental clinics of the Aga Khan University Hospital, Karachi, A log of file deformation or fracture during root canal preparation was kept. The location of fracture was noted along with the identity of the canal in which fracture took place. The fracture in the two rotary systems was compared. SPSS 20 was used for data analysis...
March 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27871483/vertical-load-induced-with-twisted-file-adaptive-system-during-canal-shaping
#20
Ahmed Jamleh, Khalid Alfouzan
INTRODUCTION: To evaluate the vertical load induced with the Twisted File Adaptive (TFA; SybronEndo, Orange, CA) system during canal shaping of extracted teeth by comparing it with the Twisted File (TF, SybronEndo), ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland), and ProTaper Universal (PTU, Dentsply Maillefer) systems. METHODS: Fifty-two root canals were shaped using the TFA, TF, PTN, or PTU systems (n = 13 for each system). They were shaped gently according to the manufacturers' instructions...
December 2016: Journal of Endodontics
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