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Root canal system

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https://www.readbyqxmd.com/read/27901556/apical-transportation-during-removal-of-root-canal-filling-with-different-retreatment-systems
#1
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/27898180/apical-negative-pressure-irrigation-versus-syringe-irrigation-a-systematic-review-of-cleaning-and-disinfection-of-the-root-canal-system
#2
REVIEW
E Konstantinidi, Z Psimma, L E Chávez de Paz, C Boutsioukis
The aim of this study was to systematically review and critically analyse the published data on the treatment outcome (primary outcome) and on the cleaning and disinfection of root canals (secondary outcomes) achieved by negative pressure irrigation as compared to syringe irrigation. An electronic search was conducted in EMBASE, LILACS, Pubmed, SciELO, Scopus, and Web of Knowledge using both free-text keywords and controlled vocabulary. Additional studies were sought through hand-searching of endodontic journals and of the relevant chapters of endodontic textbooks...
November 28, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27895347/comparison-of-fracture-and-deformation-in-the-rotary-endodontic-instruments-protaper-versus-k-3-system
#3
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/27892626/withdrawn-root-canal-posts-for-the-restoration-of-root-filled-teeth
#4
REVIEW
Marc Bolla, Michele Muller-Bolla, Cybele Borg, Laurence Lupi-Pegurier, Olivier Laplanche, Eric Leforestier
BACKGROUND: The foundation for the reconstruction of endodontically-treated teeth can be provided by a metal or a non-metal post and core system but no guidelines exist for choosing one or the other in particular clinical cases. OBJECTIVES: To assess the effectiveness of different post and core systems for the restoration of endodontically-treated teeth. The primary objective of this review was to compare the clinical failure rates of the different types of posts...
November 28, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27883205/root-and-root-canal-morphology-of-the-permanent-dentition-in-a-caucasian-population-a-cbct-study
#5
J N R Martins, D Marques, A Mata, J Caramês
AIM: To investigate in vivo the number of roots, the root canal system configuration and the root canal splitting and merging levels in the permanent dentition of a Caucasian population. METHODOLOGY: A total of 11,892 teeth were inspected in Cone Beam Computed Tomography examinations that were collected from a pre-existing database. The number of roots was identified, and canal configurations were classified according to Vertucci's classification and its supplemental configurations...
November 24, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27871483/vertical-load-induced-with-twisted-file-adaptive-system-during-canal-shaping
#6
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
https://www.readbyqxmd.com/read/27866000/effectiveness-of-final-decontamination-protocols-against-enterococcus-faecalis-and-its-influence-on-bond-strength-of-filling-material-to-root-canal-dentin
#7
Matheus Albino Souza, Daniel Dalla Lana, Ezequiel Gabrielli, Marlos Barbosa Ribeiro, Daniela Cristina Miyagaki, Doglas Cecchin
AIM: The aim of this study was to evaluate the effectiveness of final decontamination protocols against Enterococcus faecalis and their influence on bond strength of filling material to root canal dentin. MATERIAL AND METHODS: Ninety root canals were enlarged with ProTaper system and inoculated with E. faecalis for 15 days. Sixty samples were randomly divided into six groups (n=10) and subjected to following protocols: G1-distilled water(control), G2-2% chlorhexidine, G3-QMix, G4-6...
November 16, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27853346/comparison-of-antibacterial-effects-of-810-and-980-nanometer-diode-lasers-on-enterococcus-faecalis-in-the-root-canal-system-an-in-vitro-study
#8
Mohamad Asnaashari, Leila Tahmasebi Ebad, Shiva Shojaeian
Background and aim: Use of laser technology in endodontics has greatly increased in the recent years due to the introduction of new wavelengths and methods and optimal antimicrobial and smear layer removal properties of lasers. This in vitro study aimed to compare the antibacterial effects of diode lasers of 810 nm and 980 nm wavelength on Enterococcus faecalis (E. faecalis) biofilm in the root canal system. Materials and methods: Fifty single-canal human anterior teeth were cleaned, shaped, sterilized and randomly divided into four groups namely two experimental, one positive and one negative control group...
October 1, 2016: Laser Therapy
https://www.readbyqxmd.com/read/27847747/healing-outcomes-of-root-canal-treatment-for-c-shaped-mandibular-second-molars-a-retrospective-analysis
#9
Hye-Ra Ahn, Young-Mi Moon, Sung-Ok Hong, Min-Seock Seo
OBJECTIVES: This study aimed to evaluate the healing rate of non-surgical endodontic treatment between C-shaped and non-C-shaped mandibular second molars. MATERIALS AND METHODS: Clinical records and radiological images of patients who had undergone endodontic treatment on mandibular second molars between 2007 and 2014 were screened. The periapical index scoring system was applied to compare healing outcomes. Information about preoperative and postoperative factors as well as the demographic data of the patients was acquired and evaluated using chi-square and multinomial logistic regression tests...
November 2016: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/27847398/assessment-of-the-centralization-of-root-canal-preparation-with-rotary-systems
#10
Daniela Siqueira Lopes, Mariana Albuquerque Veiga Pessoa, Carlos Menezes Aguiar
OBJECTIVE: Apical deviations are important factors in endodontic therapy, since they can cause the treatment failure. The aim of the present study was to determine the centering capacity of ProTaper Universal™, Twisted File™ and Revo-S(®) rotary systems using cone beam computed tomography analysis before and after the instrumentation of root canals. MATERIALS AND METHODS: Thirty mesiobuccal roots from human lower first molars were divided into three groups of ten: Group 1 - ProTaper Universal™ Rotary System; Group 2 - Twisted File™ Rotary System; and Group 3 - Revo-S(®) Rotary System...
September 2016: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/27844150/c-shaped-canals-prevalence-and-root-canal-configuration-by-cone-beam-computed-tomography-evaluation-in-first-and-second-mandibular-molars-a-cross-sectional-study
#11
Avi Shemesh, Avi Levin, Vered Katzenell, Joe Ben Itzhak, Oleg Levinson, Zini Avraham, Michael Solomonov
OBJECTIVES: C-shaped root canal configuration is an unusual root canal morphology and one of the most often anatomical variations in root canal systems of second mandibular molars. The purpose of this study was to assess the prevalence, symmetry and configuration of C-shaped canals in first and second mandibular molars in an Israeli population using cone beam computed tomography (CBCT). MATERIALS AND METHODS: One thousand twenty Israel patients' CBCT scans were screened and evaluated...
November 14, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27843508/influence-of-operator-s-experience-on-the-shaping-ability-of-protaper-universal-and-waveone-systems-a-comparative-study-on-simulated-root-canals
#12
Giuseppe Troiano, Mario Dioguardi, Armando Cocco, Giovanni Giannatempo, Luigi Laino, Domenico Ciavarella, Elio Berutti, Lorenzo Lo Muzio
OBJECTIVE: To assess the influence of operator experience on: shaping and centering ability, mean preparation time and presence of canal aberrations of ProTaper Universal and WaveOne systems on simulated root canals. MATERIALS AND METHODS: Sixty S-shaped canals in resin blocks were assigned to four groups (n=15 for each group). Group1 (Experienced operator, ProTaper), Group2 (Experienced operator, WaveOne), Group3 (Inexperienced operator, ProTaper), Group4 (Inexperienced operator, WaveOne)...
2016: Open Dentistry Journal
https://www.readbyqxmd.com/read/27834412/effect-of-sonic-application-of-universal-adhesive-systems-on-bond-strength-of-fiber-posts-to-root-canal
#13
Driellen C Zarpellon, Anna L Szesz, Alessandro D Loguercio, Cesar A G Arrais
PURPOSE: This study evaluated the push-out bond strength (BS) of fiber posts in root canals and the nanoleakage (NL) pattern at the bonding interface when universal adhesives were applied in etch-and-rinse mode to root dentin using an oscillating sonic device. MATERIALS AND METHODS: Fifty-four roots of human premolars were endodontically prepared and divided into 6 experimental groups according to the main factors: adhesive system/resin cement (Ambar Universal/AllCem, Scotchbond Universal/RelyX ARC, Prime&Bond Elect/Enforce) and application mode (vigorous manual or sonic)...
November 10, 2016: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/27829745/a-comparison-of-the-sealing-ability-of-various-temporary-restorative-materials-to-seal-the-access-cavity-an-in-vitro-study
#14
Aji Markose, Ramesh Krishnan, Maya Ramesh, Shishir Singh
INTRODUCTION: In multiple-appointment root canal treatment, a temporary filling material is used to seal the access cavity between visits. The primary function of this material is to prevent the contamination of the root canal system by fluids, organic debris, and bacteria from the oral cavity. MATERIAL AND METHODS: A total of fifty extracted noncarious unrestored human maxillaryanterior teeth with intact crowns and roots were selected The canals were instrumented using stepback technique and sodium hypochlorite (3%) and hydrogen peroxide (3%) were used as irrigants for each specimen alternatively...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27819309/micro-ct-evaluation-of-apical-delta-morphologies-in-human-teeth
#15
Xianhua Gao, Franklin R Tay, James L Gutmann, Wei Fan, Ting Xu, Bing Fan
The apical delta is an intricate system within the root canal and incompletely debridement may affect the long-term prognosis of root canal therapy. The aim of the present study is to investigate the morphologic features of apical deltas in human teeth with micro-computed tomography (micro-CT) using a centreline-fitting algorithm. One hundred and thirty-six apical deltas were detected in 1400 teeth. Molars had more apical deltas (15.8%) than anterior teeth (6.3%). In maxillary molars, the mesiobuccal root had a significantly higher prevalence of apical delta than the palatal root or the distobuccal root...
November 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27812625/prevalence-and-morphometric-analysis-of-three-rooted-mandibular-first-molars-in-a-brazilian-subpopulation
#16
Clarissa Teles Rodrigues, Christiano de Oliveira-Santos, Norberti Bernardineli, Marco Antonio Hungaro Duarte, Clovis Monteiro Bramante, Paloma Gagliardi Minotti-Bonfante, Ronald Ordinola-Zapata
Objectives: To determine the prevalence of three-rooted mandibular molars in a Brazilian population using cone beam computed tomography (CBCT) and to analyze the anatomy of mandibular first molars with three roots through micro-CT. Material and Methods: CBCT images of 116 patients were reviewed to determine the prevalence of three-rooted first mandibular molars in a Brazilian subpopulation. Furthermore, with the use of micro-CT, 55 extracted three-rooted mandibular first molars were scanned and reconstructed to assess root length, distance between canal orifices, apical diameter, Vertucci's classification, presence of apical delta, number of foramina and furcations, lateral and accessory canals...
September 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/27812613/effects-of-the-application-techniques-of-self-adhesive-resin-cements-on-the-interfacial-integrity-and-bond-strength-of-fiber-posts-to-dentin
#17
Ana Paula Ribeiro do Vale Pedreira, Paulo Henrique Perlatti D'Alpino, Patrícia Nóbrega Rodrigues Pereira, Sasha Braun Chaves, Linda Wang, Leandro Hilgert, Fernanda Cristina Pimentel Garcia
Objective: To evaluate the influence of an application technique of a glass-fiber post using self-adhesive resin cements on the push-out bond strength and the presence of bubbles in the root thirds. The cements were either applied according to the manufacturer's instruction or using a commercial delivering system (Centrix), at which the cement pastes were collected and applied after manipulation. Material and Methods: Self-adhesive resin cements (RelyX U200/3M ESPE-U200; Maxcem Elite/Kerr-MAX; Clearfil SA Cement/Kuraray-CSA) and a conventional cement (RelyX ARC/3M ESPE-ARC) were used to cement a post and applied either based on the manufacturer's instructions or using a Centrix syringe to deliver the cements directly onto the post of choice, or directly into canal...
September 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/27811455/evaluation-of-antifungal-efficacy-of-qmix-2in1-as-a-final-irrigant-an-in-vitro-study
#18
E Kalyoncuoglu, E Sen Tunc, S Ozer, C Keskin, K Bilgin, A Birinci
BACKGROUND: It is known that no specific antifungal agent exists at present for irrigation of infected root canals. QMix 2in1 was investigated to determine whether they could be an alternative for sodium hypochlorite (NaOCl), chlorhexidine gluconate (CHX), and ethylenediaminetetraacetic acid (EDTA). OBJECTIVE: The aim of this in vitro study was to evaluate and compare the antifungal efficacy of QMix 2in1, 5.25% NaOCl, 2% CHX, and 17% EDTA as a final rinse against Candida albicans (C...
November 2016: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/27809348/apical-transportation-and-canal-straightening-with-different-continuously-tapered-rotary-file-systems-in-severely-curved-root-canals-f6-skytaper-and-oneshape-vs-mtwo
#19
S Bürklein, P G Jäger, E Schäfer
AIM: To compare the apical transportation and the canal straightening of three continuous tapered rotary NiTi systems (F6 SkyTaper (Komet/Brasseler, Lemgo, Germany), Mtwo (VDW, Munich, Germany), OneShape (Micro Méga, Besançon France)) in severely curved root canals. METHODOLOGY: A total of 60 root canals in extracted human teeth with angles of curvatures ranging between 25° and 35° and radii ranging between 4 and 9mm were divided into three groups (n=20). Based on radiographs taken prior to instrumentation, the groups were balanced with respect to the angle and the radius of canal curvature (P=1...
November 3, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27809342/effect-of-sonic-and-ultrasonic-activation-on-organic-tissue-dissolution-from-simulated-grooves-in-root-canals-using-sodium-hypochlorite-and-edta
#20
A J Conde, R Estevez, G Loroño, Ó Valencia de Pablo, G Rossi-Fedele, R Cisneros
AIM: To compare soft-tissue dissolution by sodium hypochlorite, with an EDTA intermediate rinse, with or without activation with passive ultrasonic activation (PUI) or sonic activation using the Endoactivator (EA) or Eddy tips (ED). METHODOLOGY: The root canals of eighty-three human maxillary central incisors were chemo-mechanically prepared and the teeth split. A standardized longitudinal intracanal groove was created in one of the root halves. Eighty-three porcine palatal mucosa samples were collected, adapted to fit into the grooves and weighed...
November 3, 2016: International Endodontic Journal
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