Read by QxMD icon Read


G De-Deus, F G Belladonna, E J N L Silva, E M Souza, J C A Carvalhal, R Perez, R T Lopes, M A Versiani
AIM: To evaluate the frequency of dentinal micro-cracks after root canal filling procedures with GuttaCore (GC), cold lateral compaction (CLC) and warm vertical compaction (WVC) techniques in mandibular molars using micro-computed tomographic analysis. METHODOLOGY: Thirty mesial roots of mandibular molars, with a type II Vertucci's canal configuration, were prepared to working length with a Reciproc R40 instrument and randomly assigned to one of 3 experimental groups (n = 10), according to the technique used for root filling: GC, CLC or WVC...
September 30, 2016: International Endodontic Journal
Raghad A Alhashimi, Francesco Mannocci, Salvatore Sauro
The dynamic thermomechanical properties, sealing ability, and voids formation of an experimental obturation hydroxyapatite-reinforced polyethylene (HA/PE) composite/carrier system were investigated and compared with those of a commercial system [GuttaCore (GC)]. The HA/PE system was specifically designed using a melt-extrusion process. The viscoelastic properties of HA/PE were determined using a dynamic thermomechanical analyser. Human single-rooted teeth were endodontically instrumented and obturated using HA/PE or GC systems, and then sealing ability was assessed using a fluid filtration system...
June 2016: European Journal of Oral Sciences
A A Schroeder, N L Ford, J M Coil
AIM: To determine if post space preparation deviated from the root canal preparation in canals filled with Thermafil, GuttaCore, or warm vertically compacted gutta-percha. METHODOLOGY: Forty-two extracted human permanent maxillary lateral incisors were decoronated and their root canals instrumented using a standardized protocol. Samples were divided into three groups and filled with Thermafil (Dentsply Tulsa Dental Specialties, Johnson City, TN, USA), GuttaCore (Dentsply Tulsa Dental Specialties), or warm vertically compacted gutta-percha, before post space preparation was performed with a GT Post drill (Dentsply Tulsa Dental Specialties)...
February 11, 2016: International Endodontic Journal
Edgar Schäfer, Caroline Schrenker, Jonas Zupanc, Sebastian Bürklein
INTRODUCTION: The aim of this study was to compare different obturation techniques in terms of the percentage of gutta-percha filled areas (PGFA), sealer filled areas (PSFA), and voids in straight root canals prepared with different instruments. METHODS: One hundred sixty extracted single-rooted mandibular premolars with straight canals were allocated into 10 groups (n = 16 teeth per group): A, manual instrumentation + lateral compaction (LC); B, Mtwo + GuttaFusion (GF); C, Mtwo + LC; D, Mtwo + single-cone (SC); E, Reciproc + GF; F, Reciproc + LC; G, Reciproc + SC; H, WaveOne + GuttaCore (GC); I, WaveOne + LC; and J, WaveOne + SC...
February 2016: Journal of Endodontics
Giselle Nevares, Diana Santana de Albuquerque, Carlos Eduardo da Silveira Bueno, Rodrigo Sanches Cunha
GuttaCore is a new cross-linked gutta-percha carrier. Its handling time and ease of removal were compared with those of a plastic carrier (Thermafil) and the continuous wave of condensation technique (control). Forty-five maxillary central incisors were randomly divided 3 groups according to filling technique and retreatment was carried out in all samples with NiTi rotary files, hand files and ultrasonic inserts. Time required for filling removal was recorded. Roots were then split longitudinally and photographed under 5x magnification, and residual filling material was quantified...
2015: Journal—Canadian Dental Association, Journal de L'Association Dentaire Canadienne
Ji Hee Hwang, Jin Chung, Hee-Sam Na, Eunjoo Park, Sangwon Kwak, Hyeon-Cheol Kim
This study evaluated the bacterial leakage resistance and root canal lining efficacy of various root canal filling materials and methods by using confocal laser-scanning microscope (CLSM). Sixty extracted human premolars with mature apex and single root canal were randomly divided into 2 control groups and 4 experimental groups. Group CW was filled with continuous wave technique using gutta-percha and AH Plus sealer. Group GC was coated with AH-Plus sealer and then obturated with soften GuttaCore. Group GF was obturated using GuttaFlow and gutta-percha...
November 2015: Scanning
Robert B Whitten, Marc E Levitan
INTRODUCTION: A common critique of using thermoplasticized carrier-based obturators is the incidence of overextension. It would be of benefit to clinicians to have a technique for canal preparation that would allow for predictable length control. This study compared straight canals instrumented to a size 40 file using a 0.04 standardized taper preparation (STP) and a varied taper preparation (VTP) by evaluating the extension of GuttaCore (GC) obturators (Dentsply Tulsa Dental, Tulsa, OK)...
February 2015: Journal of Endodontics
Manuele Mancini, Pietro Palopoli, Lorenzo Iorio, Gabriele Conte, Luigi Cianconi
INTRODUCTION: This ex vivo study evaluated the accuracy of the Root ZX electronic apex locator (EAL) (J Morita Corp, Kyoto, Japan) in determining the working length during retreatment of canals sealed with 2 different carrier-based obturating materials (ProTaper Obturator [Dentsply Maillefer, Ballaigues, Switzerland] and GuttaCore [Dentsply Maillefer]) and also evaluated whether they influenced its accuracy differently. METHODS: Fifty extracted single-rooted human teeth with sound apices were selected for the study...
December 2014: Journal of Endodontics
Raghad Abdulrazzaq Alhashimi, Richard Foxton, Shihab Romeed, Sanjukta Deb
The first aim of this paper was to evaluate the push-out bond strength of the gutta-percha coating of Thermafil and GuttaCore and compare it with that of gutta-percha used to coat an experimental hydroxyapatite/polyethylene (HA/PE) obturator. The second aim was to assess the thickness of gutta-percha around the carriers of GuttaCore and HA/PE obturators using microcomputed tomography ( μ CT). Ten (size 30) 1 mm thick samples of each group (Thermafil, GuttaCore, and HA/PE) were prepared. An orthodontic wire with a diameter of 0...
2014: TheScientificWorldJournal
Guo-Hua Li, Li-Na Niu, Lisa C Selem, Ashraf A Eid, Brian E Bergeron, Ji-Hua Chen, David H Pashley, Franklin R Tay
OBJECTIVES: The present study examined the quality of obturation in root canals obturated by GuttaCore, a gutta-percha-based core-carrier system with a cross-linked thermoset gutta-percha carrier, by comparing the incidence of gaps and voids identified from similar canals obturated by cold lateral compaction or warm vertical compaction. METHODS: Thirty single-rooted premolars with oval-shaped canals were shaped and cleaned, and obturated with one of the three obturation techniques (N=10): GuttaCore, warm vertical compaction or cold lateral compaction...
September 2014: Journal of Dentistry
Robert T Beasley, Anne E Williamson, Bruce C Justman, Fang Qian
INTRODUCTION: A novel carrier-based obturation system, GuttaCore, was developed to facilitate more efficient nonsurgical retreatments. This ex vivo study evaluated the time required for re-treating GuttaCore and 2 other common obturation materials in moderately curved canals with ProTaper retreatment and ProTaper files. METHODS: Sixty mesial roots of mandibular molars with the same mean curvature were randomly divided into 3 experimental groups: warm vertical, Thermafil Plus, and GuttaCore...
January 2013: Journal of Endodontics
H Wimmer, K Spesshardt
No abstract text is available yet for this article.
September 10, 1966: Die Medizinische Welt
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"