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https://www.readbyqxmd.com/read/29729026/longevity-of-bond-strength-of-resin-cements-to-root-dentine-after-radiation-therapy
#1
P A Yamin, R D Pereira, F C Lopes, A M Queiroz, H F Oliveira, P C Saquy, M D Sousa-Neto
AIM: To evaluate the bond strength and adhesive interface between several resin cements and root dentine immediately and after 6 months of radiotherapy protocol. METHODOLOGY: Sixty maxillary canines were selected and randomly assigned to two groups (n=30): one group was not irradiated, and the other one was subjected to a cumulative radiation dose of 60 Gy. The teeth were sectioned to obtain roots with 16 mm length, and the canals were prepared with Reciproc system (R50) and filled using a lateral condensation technique with epoxy resin sealer...
May 4, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29723333/influence-of-ethanol-on-dentin-roughness-surface-free-energy-and-interaction-between-ah-plus-and-root-dentin
#2
Carlos Augusto de Morais Souto Pantoja, Diogo Henrique da Silva, Adriana de Jesus Soares, Caio Cezar Randi Ferraz, Brenda Paula Figueiredo de Almeida Gomes, Alexandre Augusto Zaia, José Flávio Affonso de Almeida
This study aimed to evaluate the influence of different ethanol concentrations on dentin roughness, surface free energy, and contact angle between AH Plus and the root canal dentin. One hundred human maxillary anterior teeth were split longitudinally and 200 dentin specimens were polished to make the surface flatter and smoother. An acrylic bar was positioned between two dentin specimens and impression material was added to create a block, simulating an instrumented root canal space. Specimens were removed from the mold and cleaned in an ultrasonic bath for 10 min...
2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29707025/cytotoxicity-of-two-experimental-epoxy-resin-based-sealers
#3
Hengameh Ashraf, Farhood Najafi, Soolmaz Heidari, Zahra Yadegary, Saeede Zadsirjan
Introduction: Many endodontic sealers are available, but search for the ideal sealer continues. This study aimed to assess the cytotoxicity of two experimental endodontic sealers in comparison with AH-26 resin sealer. Methods and Materials: This in vitro study was conducted on conventional and experimental root canal sealers: AH-26, an epoxy resin experimental sealer A (ES-A) composed of calcium tungstate, zirconium oxide, aerosil, bismuth oxide, titanium oxide, hexamine and an epoxy resin and experimental sealer B (ES-B) with compositions similar to ES-A except for the presence of imidazoline as a catalyst...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29707019/micro-ct-evaluation-of-gutta-percha-removal-by-two-retreatment-systems
#4
Gustavo Alberto Rubino, George Táccio de Miranda Candeiro, Laila Gonzales Freire, Elaine Faga Iglecias, Érico de Mello Lemos, Celso Luiz Caldeira, Giulio Gavini
Introduction: The aim of the present ex vivo research was to compare the remaining filling material and the volumes of dentine removed after retreatment of curved canals with two rotary systems naming ProTaper Universal Retreatment and Mani NRT-GPR using micro-computed tomography (micro-CT). Methods and Material: Forty mandibular molars containing two completely separated canals, with curvature angle of 25-35° and a curvature radius <10 mm were prepared to the Mtwo instrument 35/0...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29692836/effect-of-root-canal-sealers-on-bond-strength-of-fiber-posts-to-root-dentin-cemented-after-one-week-or-six-months
#5
Lucas Ruiz, Giovana Mongruel Gomes, Bruna Bittencourt, Fabrício Rutz da Silva, Osnara Maria Mongruel Gomes, Julio Cezar Chidoski Filho, Abraham Lincoln Calixto
Eugenol-based root canal sealers (RCS) have been widely used by clinicians; however, their effect on resinous materials is still questionable. The objective of this study was to evaluate the influence of RCS at 1 week and 6 months' post obturation on the bond strength (BS) of glass fiber posts (GFP) to root dentin, using conventional and self-adhesive cementation systems (CS). The roots of 56 extracted human canines, were divided in eight groups ( n =7) according to the combination of the following factors: RCS (with or without eugenol-Endofill and Sealer 26, respectively), storage period post obturation and prior GFP cementation (1 week and 6 months) and cementation systems (Variolink II - conventional resin cement or RelyX U200-self-adhesive resin cement)...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29690959/evaluation-of-microleakage-in-single-rooted-teeth-obturated-with-thermoplasticized-gutta-percha-using-various-endodontic-sealers-an-in-vitro-study
#6
Maham Muneeb Lone, Farhan Raza Khan, Muneeb Ahmed Lone
OBJECTIVE: To compare apical microleakage of extracted, single-rooted teeth obturated with thermoplasticized injectable gutta-percha using two different endodontic sealers (calcium-hydroxide and resin based). STUDY DESIGN: An experimental study. PLACE AND DURATION OF STUDY: The Aga Khan University Hospital (AKUH), Dental Clinics and Laboratory from June to September 2015. METHODOLOGY: The study was conducted using extracted teeth...
May 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29685025/comparison-of-coronal-leakage-of-different-root-canal-filling-techniques-an-ex-vivo-study
#7
A Libonati, V Di Taranto, C D Agostini, M M Santoro, D Di Carlo, D Ombres, G Gallusi, C Favalli, G Marzo, V Campanella
The aim of this study was to compare the quality of the coronal seal, using an in vitro bacterial invasion test, of three different root canal filling systems. Twenty-seven freshly extracted mandibular premolars were selected and divided into three experimental groups (G1, G2 and G3 n=7) and two control groups (Ct+ and Ct- n=3). All teeth in the experimental groups were prepared using NiTi Mtwo rotating instruments and then the endodontic treatments were completed using the three-tested warm guttapercha root filling techniques: Microseal (G1), Thermafil (G2) and System B (G3)...
March 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29680722/effect-of-calcium-hydroxide-dressing-on-the-dentinal-tubule-penetration-of-2-different-root-canal-sealers-a-confocal-laser-scanning-microscopic-study
#8
Emel Uzunoglu-Özyürek, Özge Erdoğan, Sevinç Aktemur Türker
INTRODUCTION: The purpose of this study was to evaluate the effect of calcium hydroxide (Ca[OH]2 ) dressing on the dentinal tubule penetration of epoxy resin-based sealer (AH 26; Dentsply Maillefer, Ballaigues, Switzerland) and tricalcium silicate-based sealer (BioRoot RCS; Septodont, Saint Maurdes Fosses, France). METHODS: Fifty-two single-rooted mandibular premolars were used. Four samples were assigned as the positive control. Twenty-four samples received Ca(OH)2 labeled with rhodamine B, whereas the rest did not...
April 18, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29675760/comparison-of-efficiency-of-the-retreatment-procedure-between-wave-one-gold-and-wave-one-systems-by-micro-ct-and-confocal-microscopy-an-in-vitro-study
#9
Lyz Cristina Furquim Canali, Jussaro Alves Duque, Rodrigo Ricci Vivan, Clovis Monteiro Bramante, Marcus Vinícius Reis Só, Marco Antonio Hungaro Duarte
INTRODUCTION: To compare, by Micro-CT and confocal laser scanning microscopy (CLSM), the ability of the Wave One Gold and Wave One systems to remove filling material from mesial canals of mandibular molars, effective time spent; quantity of extruded material, and percentage of sealer in the dentinal tubules after retreatment and re-obturation procedures. MATERIALS AND METHODS: Ten first mandibular molars (n = 20 mesial canals) were prepared and filled with gutta-percha and Endofill sealer mixed with Rhodamine B dye using the single cone technique...
April 19, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29675513/endodontic-sealers-affect-the-bond-strength-of-fiber-posts-and-the-degree-of-conversion-of-two-resin-cements
#10
Thais Camponogara Bohrer, Patricia Eliana Fontana, Vinicius Felipe Wandscher, Victor Hugo Carvalho Morari, Sailer Santos Dos Santos, Luiz Felipe Valandro, Osvaldo Bazzan Kaizer
PURPOSE: To evaluate the effect of two endodontic sealers on the push-out bond strength between fiber posts and root canal wall after different storage times and verify the influence of the endodontic sealers on the degree of conversion of composite cements. MATERIALS AND METHODS: A total of 180 bovine teeth were endodontically treated using two endodontic sealers, eugenol- based (Endofill, Dentsply Maillefer) or epoxy resin-based (AH Plus, Dentsply Maillefer). Subsequently, the specimens were stored in 100% relative humidity at 37°C for 24 h, 6 or 12 months...
April 19, 2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29674829/influence-of-ultrasonics-on-the-penetration-depth-of-ah-plus-acroseal-and-endorez-root-canal-sealers-an-in-vitro-study
#11
P Krishna Prasad, Abhishek Sankhala, Aastha Tiwari, Shrikant Parakh, Gagan R Madan, Ankita Singh
Aim: The aim of this study is to evaluate the effect of ultrasonic activation on the penetration depth of AH Plus, Acroseal, and EndoREZ sealers into dentinal tubules using Confocal laser microscopy. Methods: A total of 60 single-rooted teeth were prepared and divided into three groups on the basis of the type of sealer used (G1: AH Plus, G2: Acroseal and G3:EndoREZ). Each group was further subdivided into two equal subgroups on the basis of ultrasonic activation of sealers and nonactivation...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674828/depth-and-percentage-of-resin-based-sealer-penetration-inside-the-dentinal-tubules-using-endovac-endoactivator-navi-tip-fx-irrigation-system-a-confocal-laser-scanning-microscope-study
#12
Ramesh Bharti, Aseem Prakash Tikku, Anil Chandra, Vijay Kumar Shakya, Simith Yadav
Aim: This in vitro study was conducted to evaluate the effect of EndoVac, EndoActivator, and Navy Tip FX irrigation system on lateral depth and percentage of sealer penetration into the dentinal tubules using confocal laser scanning microscope. Materials and Methods: Forty recently extracted single-rooted mandibular premolars were taken and root canal treatment was performed using three different irrigation system, that is, EndoVac, EndoActivator, and Navi tip FX...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674821/-in-vitro-evaluation-of-the-contact-angle-formed-between-ah-plus-hybrid-root-seal-and-mineral-trioxide-aggregate-plus-sealer-with-dentin-and-gutta-percha
#13
Vineeta Nikhil, Shikha Jaiswal, Gauravi Bajpai
Aim: The purpose of this study was evaluation and comparison of the contact angle of new root canal sealers - Hybrid Root Seal, mineral trioxide aggregate (MTA) Plus, and the conventional AH Plus sealer with dentin and gutta-percha. Materials and Methods: Two groups (Group D - dentin and Group G - gutta-percha) of 18 samples each were further randomly divided into 3 subgroups based on the type of sealer used, that is, AH Plus, Hybrid Root Seal, and MTA Plus. Contact angle measurement device (Phoenix 300) was used to measure the contact angle of the sealers on both dentin and gutta-percha...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674815/apical-dye-leakage-of-two-single-cone-root-canal-core-materials-hydrophilic-core-material-and-gutta-percha-sealed-by-different-types-of-endodontic-sealers-an-in-vitro-study
#14
Mohamed Abdel Aziz Mohamed El Sayed, Hussam Al Husseini
Aim of the Study: The aim of this study was to compare the apical sealing ability of two single-cone filling materials when sealed with different types of root canal sealers. Materials and Methods: Eighty extracted maxillary and mandibular canines were selected and their crowns were cut. The root canals were prepared using ProTaper Universal rotary system until size F4 and then divided into seven experimental groups ( n = 10 each) and two control groups ( n = 5 each)...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29670732/analysis-of-sealing-ability-of-endodontic-cements-apical-plugs
#15
Bruna Cechella, Josiane de Almeida, Morgane Kuntze, Wilson Felippe
Background: It is unknown whether the bioactivity of Biodentine characterized by the precipitation of hydroxyapatite and formation of tags into the dentinal tubules improve its sealing ability as an apical plug. Aim: To evaluate the sealing ability provided by Biodentine and mineral trioxide aggregate (MTA) apical plugs, with or without phosphate-buffered saline (PBS) intracanal dressing, using a glucose leakage method. Material and Methods: The space of the canal of 100 root segments with about 12 mm long was shaped using Gates-Glidden...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29670728/biological-and-physico-chemical-properties-of-new-root-canal-sealers
#16
Marco Colombo, Claudio Poggio, Alberto Dagna, Maria-Vittoria Meravini, Paolo Riva, Federico Trovati, Giampiero Pietrocola
Background: The purpose of the present study was to compare the biological and the physico-chemical properties of bioceramic-based root canal sealers, calcium hydroxide-based, MTA-based and epoxy resin-based root canal sealers. Material and Methods: Two bioceramic-based sealers, one calcium hydroxide-based sealer, one MTA-based sealer and two epoxy resin-based sealers were tested. Results: EasySeal and MTA Fillapex showed severe citotoxic activity, AH Plus and SealapexTM moderate cytotoxicity, BioRoot™ RCS and TotalFill BC Sealer were both cytocompatible...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29651668/effect-of-chitosan-nanoparticle-qmix-and-edta-on-totalfill-bc-sealers-dentinal-tubule-penetration-a-confocal-laser-scanning-microscopy-study
#17
Zeliha Uğur Aydın, Taha Özyürek, Büşra Keskin, Talat Baran
The aim of the present study was to compare the effect of chitosan nanoparticle, QMix, and 17% EDTA on the penetrability of a calcium silicate-based sealer into dentinal tubules using a confocal laser scanning microscope (CLSM). Sixty mandibular premolar teeth were selected and randomly divided into three groups (n = 20) before root canal preparation according to the solution used in the final rinse protocol: chitosan, QMix, and EDTA groups. Twenty teeth of each group were filled with a TotalFill BC sealers' single gutta-percha cone and with 0...
April 12, 2018: Odontology
https://www.readbyqxmd.com/read/29628655/scanning-electron-microscopic-evaluation-of-marginal-adaptation-of-ah-plus-guttaflow-and-realseal-at-apical-one-third-of-root-canals-part-ii-core-sealer-interface
#18
Haridas Das Adhikari, Sakshi Jain
Background: Not only the gaps at dentin-sealer interface but also at core-sealer interface may jeopardize the outcome of root canal treatment. Aim: The aim of this in vitro scanning electron microscopic (SEM) study was to determine which root canal sealer among AH-Plus, GuttaFlow, and RealSeal provides a superior marginal adaptation with the core obturating material in the apical third region of root canals. Materials and Methods: Selected 30 human freshly extracted maxillary central incisors were biomechanically prepared, then divided equally into three groups and obturated with AH-Plus, GuttaFlow, and RealSeal using single cone obturation technique...
January 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29628654/scanning-electron-microscopic-evaluation-of-marginal-adaptation-of-ah-plus-guttaflow-and-realseal-at-apical-one-third-of-root-canals-part-i-dentin-sealer-interface
#19
Sakshi Jain, Haridas Das Adhikari
Background: Complete seal at dentin-sealer-core interface of the root canal is required to maintain long-term periapical health. Aim: The aim of this in vitro scanning electron microscopic (SEM) study was to determine which of the commonly used root canal sealer among AH-Plus, GuttaFlow, and RealSeal provides a superior marginal adaptation with the dentin in the apical third region of root canals. Materials and Methods: Selected 30 human freshly extracted maxillary central incisors were biomechanically prepared, then divided equally into three groups and obturated with AH-Plus, GuttaFlow, and RealSeal using single-cone obturation technique...
January 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29628648/resistance-to-fracture-of-teeth-instrumented-using-novel-endostar-e5-rotary-versus-protaper-next-and-waveone-file-systems
#20
Ajinkya M Pawar, Mansing G Pawar, Bhagyashree Thakur, Kulwinder Singh Banga, Alexander Maniangat Luke
Aim: The current study compared the fracture resistance of samples instrumented by two rotary files and a reciprocating file, obturated with gutta-percha and AH Plus. Materials and Methods: A total of 60 freshly extracted mandibular premolar teeth with single roots and single canals were acquired and decoronated at or below the cementoenamel junction. The samples were randomly divided into four groups ( n = 15). Group 1 control (noninstrumented/obturated), and for Groups 2-4 root canal instrumentation was done by EndoStar E5 (EE5), ProTaper NEXT (PTN), and WaveOne, respectively...
January 2018: Journal of Conservative Dentistry: JCD
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