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https://www.readbyqxmd.com/read/29297560/influence-of-root-canal-filling-techniques-on-sealer-penetration-and-bond-strength-to-dentin
#1
Luciana Martins Domingues de Macedo, Yara Silva-Sousa, Silvio Rocha Corrêa da Silva, Samantha Schaffer Pugsley Baratto, Flares Baratto-Filho, Fuad Jacob Abi Rached-Júnior
The influence of root canal filling techniques on the penetration of AH Plus into dentinal tubules was evaluated using confocal laser scanning microscopy (CLSM) and the impact on the bond strength of the filling material on the root dentin was evaluated using the push-out test. Roots of the maxillary central incisors (n=40) were prepared with ProTaper Universal and assigned to four groups: lateral condensation, vertical compaction, modified Tagger hybrid and single cone. After root canal filling with gutta-percha and AH Plus, along with the addition of 0...
May 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29284963/evaluation-of-push-out-bond-strength-of-fiber-post-after-treating-the-intra-radicular-post-space-with-different-post-space-treatment-techniques-a-randomized-controlled-in-vitro-trial
#2
Sebeena Mathew, Iswarya R Raju, C P Sreedev, K Karthick, T Boopathi, N T Deepa
Objective: The aim of this study was to evaluate the push out bond strength after treating the post space with different irrigation procedures. Study Design: The study sample comprised of 60 recently extracted premolars. These teeth were placed in 5.25% sodium hypochlorite solution for 5 min and then washed under tap water. De-coronated samples were biomechanically prepared until F3 ProTaper and obturated using AH-Plus and 30# (6%) gutta-percha. The specimens were allowed to set for 24 h and then post space was prepared...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29284939/a-comparative-evaluation-of-intraradicular-smear-removal-efficacy-of-2-chitosan-low-molecular-weight-4-chitosan-citrate-and-10-citric-acid-when-used-as-final-rinse-in-irrigation-protocols-a-field-emission-scanning-electron-microscopic-study
#3
M Praveen, G Aarthi, P K Meenapriya, S Senthil Kumar, N S Mohan Kumar, J V Karunakaran
Aim: This study aims to compare the smear layer removal efficacy of 2% chitosan (low molecular weight) (C-LMV), 4% chitosan citrate (CC), and 10% citric acid (CA) when used in specific irrigant protocols. Materials and Methods: A total of 60 single-rooted maxillary incisors and canines were decoronated, standardized to a root length of 15 mm, and prepared with rotary files up to protaper F3 size. Sodium hypochlorite was used as initial rinse [8 ml]. The samples were divided into experimental (Group III, IV, V, and VI) (n = 10) and control groups (I - 17% EDTA, II - normal saline) (n = 5) based on the type of final rinse solution (5 ml) used, that is, 2% C-LMV, 4% C-citrate, 10% CA, and 1% acetic acid...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29259363/alternating-versus-continuous-rotation-root-canal-transportation-and-centering-ratio-with-the-protaper-next
#4
Juan González-Chapela, Pablo Castelo-Baz, Purificación Varela-Patiño, Benjamín Martín-Biedma, Manuel Ruíz-Piñón
Background: The technique of alternating rotation has been used with NiTi rotary instruments to increase the resistance to fracture compared with conventional continuous rotation. However, it is still not clear what type of instrumentation could provide better results in the preservation of the original canal anatomy. Aim: The aim of this study is to determine the influence of the type of rotation on canal transportation and centering ability using cone-beam computed tomography (CBCT) imaging...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29259361/comparative-evaluation-of-smear-layer-removal-by-chitosan-and-ethylenediaminetetraacetic-acid-when-used-as-irrigant-and-its-effect-on-root-dentine-an-in-vitro-atomic-force-microscopic-and-energy-dispersive-x-ray-analysis
#5
Sijo Pazhayahottathil Mathew, Veena Suresh Pai, G Usha, Roopa R Nadig
Aim: This study was undertaken to evaluate the efficacy of smear layer removal and nanostructural and chemical changes caused by chitosan and ethylenediaminetetraacetic acid (EDTA) on tooth surface using atomic force microscopic analysis and energy-dispersive X-ray (EDX) analysis. Methodology: Forty single-rooted premolars were decoronated to a standard length of 15 mm and enlarged to Protaper F3 with irrigation of 1 mL 1% NaOCl and deionized water. Specimens were then divided into 4 groups with 10 samples each and subjected to final rinse with 17% EDTA solution, 0...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29259360/influence-of-root-canal-obturation-using-gutta-percha-with-three-different-sealers-on-root-reinforcement-of-endodontically-treated-teeth-an-in-vitro-comparative-study-of-mandibular-incisors
#6
Pravin Patil, Kulwinder Singh Banga, Ajinkya M Pawar, Sandeep Pimple, Raguram Ganeshan
Aim: The purpose of this in vitro study was to evaluate the vertical force required to fracture mandibular incisor teeth, obturated using gutta-percha with three different sealers. Materials and Methods: Seventy-five extracted mandibular incisors with intact and fully formed apices, exhibiting single root and canal were acquired. The teeth were decoronated obtaining a root segments of 15 mm and were divided into five groups (n = 15). Group 1: left uninstrumented and unfilled (negative control)...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29259355/comparative-study-of-protaper-gold-reciproc-and-protaper-universal-for-root-canal-preparation-in-severely-curved-root-canals
#7
Hakan Arslan, Ezgi Doganay Yildiz, Hicran Ates Gunduz, Meltem Sumbullu, Ibrahim Sevki Bayrakdar, Ertugrul Karatas, Muhammed Akif Sumbullu
Aim: The aim of this study is to evaluate the root canal transportation, centering ability, and instrumentation times with the ProTaper Gold (Dentsply Tulsa Dental, Tulsa, OK, USA), Reciproc (VDW, Munich, Germany), and ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) using cone-beam computed tomography (CBCT). Materials and Methods: Thirty mesial root canals of mandibular first molars with curvature angles of 35°-70° and radii of 2-6 mm were included in the study...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29229460/effect-of-low-surface-tension-edta-solutions-on-the-bond-strength-of-resin-based-sealer-to-young-and-old-root-canal-dentin
#8
Cigdem Güzel, Emel Uzunoglu, Hatice Dogan Buzoglu
INTRODUCTION: The purpose of this study was to evaluate the effect of low-surface tension EDTA solutions on the push-out bond strength of resin-based sealer to young and old root canal dentin. METHODS: Root canals from 64 (n = 32 age <30 years old and n = 32 >60 years old) extracted, decoronized, single-rooted human teeth were prepared with ProTaper rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland) up to size F4 using 3 mL 2.5% sodium hypochlorite (NaOCl) between each file...
December 8, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29229455/evaluation-of-3-different-retreatment-techniques-in-maxillary-molar-teeth-by-using-micro-computed-tomography
#9
Funda Yılmaz, Cemre Koç, Kıvanç Kamburoğlu, Mert Ocak, Ferhat Geneci, M Bora Uzuner, Hakan Hamdi Çelik
INTRODUCTION: Nonsurgical retreatment procedure involves the complete removal of the previous filling material to allow thorough instrumentation, disinfection, and refilling of root canal system. We aimed to determine the residuals of the root-filling material by using 3 different retreatment techniques with the aid of micro-computed tomography. METHODS: Thirty extracted human maxillary molar teeth were included. All root canals were also obturated with F2 ProTaper single cones and AH Plus sealer...
December 8, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29225649/incidence-of-dentinal-defects-and-vertical-root-fractures-after-endodontic-retreatment-and-mechanical-cycling
#10
Mariana De Carlo Bello, Rafael Pillar, Pauline Mastella Lang, Carina Michelon, Ricardo Abreu da Rosa, Carlos Alexandre Souza Bier
Introduction: The aim of this study was to evaluate the incidence of dentinal defects and vertical root fractures (VRFs) after endodontic retreatment and mechanical cycling (MC). Methods and Materials: Two hundred mandibular premolars were selected. Forty teeth were left unprepared (control group). The remaining 160 root canals were prepared with ProTaper instruments and filled by using two different techniques [eighty with lateral compaction (LC) and eighty with single-cone (SC)]...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29225641/foramen-changes-following-over-instrumentation-of-curved-canals-with-three-engine-driven-instruments-an-in-vitro-study
#11
Salwa Yammine, Edgard Jabbour, Paul Nahas, Zeina Majzoub
Introduction: The present in vitro study aimed to evaluate and compare the changes in shape and surface area of the major foramen following shaping of curved canals with three new generation NiTi engine-driven instruments naming ProTaper Next, BT RaCe and WaveOne Gold- with 3 different levels of protrusion beyond the major apical foramen. Methods and Materials: A total of 45 extracted human molars with at least one curved canal were distributed in 3 comparable groups of 15 that were instrumented using either ProTaper Next (PTN), BT RaCe (BTR) or WaveOne Gold (WOG)...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29225637/incidence-of-dentinal-crack-after-root-canal-preparation-by-protaper-universal-neolix-and-safesider-systems
#12
Azadeh Harandi, Sina Mirzaeerad, Mahgol Mehrabani, Elham Mahmoudi, Ali Bijani
Introduction: This study aimed to compare the incidence of dentinal crack formation by instrumentation with ProTaper Universal system (rotary, multi-file system), SafeSider (reciprocation movement, multi-file system) and Neolix (rotary, single-file system). Methods and Materials: In this in vitro study, 60 freshly extracted mandibular first molars were randomly divided into three experimental groups (n=15) and a control group containing unprepared teeth (n=15). Instrumentation in different groups was accomplished using either ProTaper, Neolix or SafeSider systems up to 25/0...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29215683/instrument-design-may-influence-bacterial-reduction-during-root-canal-preparation
#13
Manoel Eduardo de Lima Machado, Cleber Keiti Nabeshima, Hector Caballero-Flores, Moyzés Elmadjian-Filho, Marco Antônio Húngaro Duarte, Ronald Odinola-Zapata, Silvana Cai
The aim of this study was to evaluate the bacterial reduction promoted by ProTaper Next and Twisted File by comparing to ProTaper Universal and manual technique. Sixty distobuccal root canals of maxillary molars sterilized with ethylene oxide were contaminated with Enterococcus faecalis broth culture. After incubation for 21 days, bacterial samples were collected and cultured on m-Enterococcus agar plates. The root canals were divided into 4 groups, according to the system used for instrumentation: ProTaper Next, Twisted File, ProTaper Universal, and crown down manual technique...
September 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29208400/influence-of-cervical-preflaring-on-the-incidence-of-root-dentin-defects
#14
Álvaro Henrique Borges, Monique Sobral Damião, Thiago Machado Pereira, Gilberto Siebert Filho, Fabio Luis Miranda-Pedro, Welligton Luiz de Oliveira da Rosa, Evandro Piva, Orlando Aguirre Guedes
INTRODUCTION: This study evaluated the influence of cervical preflaring on the incidence of root dentin defects after root canal preparation. METHODS: Extracted human maxillary central incisors were selected and allocated to 1 control group and 12 experimental groups (n = 15). Teeth in the control group were left unprepared, whereas the others were prepared using 2 reciprocating single-file systems (Reciproc and WaveOne [WO]), 3 full-sequence rotary systems (ProTaper Universal, ProTaper Next [PTN], and ProFile), and K-files driven by an oscillatory system, with and without cervical preflaring...
December 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29207839/evaluation-of-effect-of-irrigants-with-or-without-surfactant-on-root-canal-transportation-by-cone-beam-computed-tomography-an-in-vitro-study
#15
Siddiq Ahmed, Prabu Mahin Syed Ismail, M Chandra Sekhar, Sampathi Naga Lakshmi Reddy, Moosani Gopi Krishna, Upendra Natha Reddy, Kalla Nikhita, P Sai Harish
Introduction: Maintenance of original canal anatomy with proper disinfection is our primary goal to achieve during root canal instrumentation. Surfactants are added to irrigating solution to promote deeper penetration into dentinal tubules. Aim: The aim of this study was to evaluate the influence of addition of surfactants to Sodium Hypochlorite (NaOCl) and Ethylenediaminetetraacetic Acid (EDTA) on transportation of root canal. Materials and Methods: Fifty human mandibular molars with mesial root curvatures of 10° - 40° were selected and embedded in silicone impression material to simulate mandibular arch form to facilitate imaging process and maintain reproducibility of images...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29207834/clinical-evaluation-of-quality-of-obturation-and-instrumentation-time-using-two-modified-rotary-file-systems-with-manual-instrumentation-in-primary-teeth
#16
Lavanya Govindaraju, Ganesh Jeevanandan, Emg Subramanian
Introduction: Pulp therapy in primary teeth has been performed using various instrumentation techniques. However, the conventional instrumentation technique used for root canal preparation in primary teeth is hand instrumentation. Various Nickel-Titanium (Ni-Ti) instruments are available to perform efficient root canal preparation in primary teeth. These Ni-Ti instruments has been designed to aid in better root canal preparation in permanent teeth but are rarely used in primary teeth...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29178173/evaluation-of-apical-transportation-and-centering-ability-of-five-thermally-treated-niti-rotary-systems
#17
S R Pinheiro, M P Alcade, N Vivacqua-Gomes, C M Bramante, R R Vivan, M A H Duarte, B C Vasconcelos
AIM: To evaluate apical transportation and centring ability during root canal preparation in mesial root canals of mandibular molars associated with ProTaper Gold (PTG), ProDesign S (PDS), Hyflex CM (HCM), Hyflex EDM (HEDM) and ProDesign Logic (PDL). METHOD: Sixty first mandibular molars with two separete canals in the mesial root were selected after root anatomy pairing by microcomputed tomography (microCT). The teeth were randomly divided into 5 groups (n = 24); the root canal volume was calculated to ensure sample homogeneity...
November 27, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/29167712/vertical-root-fracture-initiation-in-curved-roots-after-root-canal-preparation-a-dentinal-micro-crack-analysis-with-led-transillumination
#18
Ramón Miguéns-Vila, Benjamín Martín-Biedma, Purificación Varela-Patiño, Manuel Ruíz-Piñón, Pablo Castelo-Baz
Background: One of the causative factors of root defects is the increased friction produced by rotary instrumentation. A high canal curvature may increase stress, making the tooth more susceptible to dentinal cracks. The purpose of this study was to evaluate dentinal micro-crack formation with the ProTaper NEXT and ProTaper Universal systems using LED transillumination, and to analyze the micro-crack generated at the point of maximum canal curvature. Material and Methods: 60 human mandibular premolars with curvatures between 30-49° and radii between 2-4 mm were used...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29160398/topographic-and-chemical-analysis-of-reciprocating-and-rotary-instruments-surface-after-continuous-use
#19
Mariana Mena Barreto Bastos, Aida Rene Assayag Hanan, Ana Mena Barreto Bastos, André Augusto Franco Marques, Lucas da Fonseca Roberti Garcia, Emílio Carlos Sponchiado
This study aimed at evaluating the changes in surface characteristics and NiTi content of reciprocating and rotary instruments after continuous use. Thirty brand-new instruments were assigned to 3 groups (n=10): PNX1 Group - ProTaper Next system - instrument X1; PNX2 Group - ProTaper Next system - instrument X2 and WO Group - WaveOne system - Primary instrument 25.08. The instruments were used to prepare 60 simulated root canals. Analysis of surface characteristics by scanning electron microscopy (SEM) and chemical analysis of Ni and Ti content by energy-dispersive spectroscopy (EDS) were performed before and after the first and third use of the instruments...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29160397/mechanical-preparation-showed-superior-shaping-ability-than-manual-technique-in-primary-molars-a-micro-computed-tomography-study
#20
Lídia Regina da Costa Hidalgo, Léa Assed Bezerra da Silva, Graziela Bianchi Leoni, Jardel Francisco Mazzi-Chaves, Emily Eduardo da Silva Carvalho, Alberto Consolaro, Manoel Damião Sousa-Neto
The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; a=0...
July 2017: Brazilian Dental Journal
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