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https://www.readbyqxmd.com/read/27759881/endodontic-procedures-for-retreatment-of-periapical-lesions
#1
REVIEW
Massimo Del Fabbro, Stefano Corbella, Patrick Sequeira-Byron, Igor Tsesis, Eyal Rosen, Alessandra Lolato, Silvio Taschieri
BACKGROUND: When primary root canal therapy fails, periapical lesions can be retreated with or without surgery. Root canal retreatment is a non-surgical procedure that involves removal of root canal filling materials from the tooth, followed by cleaning, shaping and obturating of the canals. Root-end resection is a surgical procedure that involves exposure of the periapical lesion through an osteotomy, surgical removal of the lesion, removal of part of the root-end tip, disinfection and, commonly, retrograde sealing or filling of the apical portion of the remaining root canal...
October 19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27507998/effect-of-bonding-application-time-on-bond-strength-of-composite-resin-to-glass-ionomer-cement
#2
Narges Panahandeh, Hassan Torabzadeh, Amir Ghassemi, Mina Mahdian, Alireza Akbarzadeh Bagheban, Seddigheh Moayyedi
OBJECTIVES: This experimental study evaluated the effect of bonding application time on the microshear bond strength of composite resin to different types of glass ionomer cements (GICs). MATERIALS AND METHODS: One-hundred and sixty specimens (two conventional and two resin-modified GICs) were prepared and divided into 16 groups. The surface of all specimens was prepared using two different bonding systems (Frog and Stea) at three different times. After setting, the composite resin (Z100) was placed over the GICs...
November 2015: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/27163490/veneered-zirconia-based-restorations-fracture-resistance-analysis
#3
Ahed Al-Wahadni, Ahmad Shahin, Kenneth S Kurtz
PURPOSE: To examine the effects of the veneering technique on the fracture resistance of zirconia-based crowns. MATERIALS AND METHODS: An artificial tooth was prepared with a 1.2 mm heavy chamfer finish line and 8° taper. The prepared tooth was scanned using CAD/CAM technology to fabricate 45 cobalt chromium (CoCr) testing dies. One CoCr die was scanned, and 45 zirconia copings were milled and divided according to the veneering technique into three groups of 15 specimens each: layering veneering (LV) using Vita Vm9, overpressing veneering (OV) using Vita Pm9, and digital veneering (DV) using Vita Triluxe forte...
May 10, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/26608579/dentin-bonding-testing-using-a-mini-interfacial-fracture-toughness-approach
#4
P Pongprueksa, J De Munck, K Karunratanakul, B C Barreto, A Van Ende, P Senawongse, B Van Meerbeek
Measurement of interfacial fracture toughness (iFT) is considered a more valid method to assess bonding effectiveness as compared with conventional bond strength testing. Common fracture toughness tests are, however, laborious and require a relatively bulky specimen size. This study aimed to evaluate a new simplified and miniaturized iFT (mini-iFT) test. Four dentin adhesives, representing the main adhesive classes, and 1 glass ionomer cement were applied onto flat dentin. Mini-iFT (1.5 × 2.0 × 16 to 18 mm) and microtensile bond strength (µTBS; 1...
March 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/26345998/influence-of-cementation-on-in-vitro-performance-marginal-adaptation-and-fracture-resistance-of-cad-cam-fabricated-zls-molar-crowns
#5
Verena Preis, Michael Behr, Sebastian Hahnel, Martin Rosentritt
OBJECTIVES: This study investigated the influence of conventional cementation, self-adhesive cementation, and adhesive bonding on the in vitro performance, fracture resistance, and marginal adaptation of zirconia-reinforced lithium silicate (ZLS) crowns. METHODS: Human molar teeth (n=40) were prepared and full-contour crowns of a ZLS ceramic (Celtra Duo, DeguDent, G, n=32) and a lithium disilicate ceramic (LDS; IPS e.max CAD, Ivoclar-Vivadent, FL, n=8) were fabricated and glazed...
November 2015: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/26062858/three-year-clinical-evaluation-of-posterior-composite-restorations-placed-with-a-single-step-self-etch-adhesive
#6
Hiroyasu Kurokawa, Toshiki Takamizawa, Akitomo Rikuta, Keishi Tsubota, Masashi Miyazaki
In this clinical study, we evaluated the 3-year clinical performance of a resin composite containing a surface-prereacted glass ionomer (S-PRG) filler (Beautifil II; Shofu Inc., Kyoto, Japan) placed with a single-step self-etch adhesive (BeautiBond; Shofu Inc.) in posterior restorations. Using modified US Public Health Service criteria, two experienced investigators performed clinical evaluations at the baseline, 6 months, 18 months, and 3 years. Color match, marginal adaptation, anatomical form, surface roughness, marginal discoloration, postoperative sensitivity, and secondary caries were evaluated...
June 2015: Journal of Oral Science
https://www.readbyqxmd.com/read/26003230/fracture-toughness-testing-a-discriminatory-mechanical-testing-performance-indicator-for-glass-ionomer-restoratives
#7
Mirza Shahzad Baig, Charles H Lloyd, Garry J P Fleming
OBJECTIVES: To investigate the single-edge notched (SEN) bend fracture toughness (KIC) testing methodology as a reproducible and discriminatory mechanical testing protocol for encapsulated and hand-mixed glass-ionomers (GI). METHODS: SEN bend test-pieces (35.0±0.1mm length, 6.0±0.1mm width, 3.0±0.1mm thickness with a sharp notch formed at mid-length by embedding a scalpel blade) were prepared for KIC testing using three encapsulated GI products (Chemfil Rock, Fuji IXGP Fast Capsule and Ionofil Molar AC)...
August 2015: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/25765867/ten-year-clinical-outcome-of-three-unit-posterior-fdps-made-from-a-glass-infiltrated-zirconia-reinforced-alumina-ceramic-in-ceram-zirconia
#8
M Sad Chaar, Nicole Passia, Matthias Kern
OBJECTIVES: To evaluate the long-term survival and complication rates of posterior three-unit fixed dental prostheses (FDPs) fabricated from a glass-infiltrated zirconia reinforced alumina ceramic (In-Ceram Zirconia). METHODS: Fifty-eight patients received 65 FDPs. Twelve FDPs replaced the second premolar (8 in the maxilla, 4 in the mandible), and 53 replaced the first molar (19 in the maxilla, 34 in the mandible). The In-Ceram Zirconia ceramic frameworks were designed and milled using the Cerec CAD/CAM system...
May 2015: Journal of Dentistry
https://www.readbyqxmd.com/read/25571680/direct-pulp-capping-of-carious-primary-molars-a-specialty-practice-based-study
#9
N Kotsanos, K N Arapostathis, A Arhakis, G Menexes
OBJECTIVE: Recommendations against direct pulp capping (DPC) for carious primary teeth are based on old, low level evidence. This study investigates the medium to long-term clinical and radiographic outcomes of such treatment. STUDY DESIGN: Each of 62 3-9 year old children with any deep, primary molar cavity was included if a pulp exposure occurred during caries excavation. Exclusion criteria were irreversible pulp damage/uncontrolled hemorrhage. Using rubber-dam, fast setting calcium hydroxide (CH) and tooth restoration were placed...
2014: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/25270702/a-clinical-evaluation-of-a-giomer-restorative-system-containing-surface-prereacted-glass-ionomer-filler-results-from-a-13-year-recall-examination
#10
COMPARATIVE STUDY
Valeria V Gordan, Paul K Blaser, Ronald E Watson, Ivar A Mjör, Deborah L McEdward, Luis G Sensi, Joseph L Riley
BACKGROUND: The authors' objective was to evaluate the long-term performance of a resin-based composite restorative material (Beautifil, Shofu, Kyoto, Japan) in combination with a self-etching primer (FL-Bond, Shofu) for posterior restorations. METHODS: Two clinicians placed 61 restorations, 26 Class I and 35 Class II, in 31 patients. They placed restorations while using rubber dam isolation. Two other clinicians examined the restorations according to the modified U...
October 2014: Journal of the American Dental Association
https://www.readbyqxmd.com/read/25210360/a-new-atraumatic-method-of-removing-fractured-palatal-root-using-endodontic-h-files-luted-with-resin-modified-glass-ionomercement-a-pilot-study
#11
V Sadesh Kannan, G R Sathya Narayanan, A Saneem Ahamed, K Velavan, E Elavarasi, C Danavel
PURPOSE: The purpose of this study is to evaluate the efficacy of using endodontic H-files luted with Resin modified glass ionomer cement (RMGIC) in removing fractured palatal root. MATERIALS AND METHODS: This study consists of 30 patients, of which 16 were males and 14 were females with a mean age of 36 years. In which, 19 were maxillary first molar and 11 were maxillary second molar. In that, 18 were fractured at the level of apical 1/3(rd) and 12 were at the level of apical 2/3(rd)...
July 2014: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/25168974/the-impact-of-luting-agents-and-stiffness-of-implant-abutments-on-marginal-adaptation-chipping-and-fracture-resistance-of-zirconia-crowns
#12
Lina Schäfer, Cornelia Winkler, Genoveva Brandl, Sebastian Eckl, Verena Preis, Michael Behr
OBJECTIVES: This in vitro study evaluated the impact of cements and implant analogs with different e-moduli on marginal adaptation, chipping, and the fracture resistance of zirconia crowns. METHODS: 80 crowns (Cercon, DeguDent) were manufactured for 40 polyoxymethylene (POM) and 40 titanium (Ti) one-piece implant analogs and divided into 10 groups: A, zinc oxide phosphate (Hoffmann׳s Cement, Richter&Hoffmann, Berlin, D); B, zinc oxide eugenol (Temp Bond, KerrHawe, Bioggio, CH); C, resin (Variolink II, Ivoclar-Vivadent, Schaan, FL); D, zinc oxide without eugenol (Temp Bond NE, KerrHawe, Bioggio, CH); E, glass ionomer (Ketac Cem, 3M ESPE, Seefeld, D)...
November 2014: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/25132283/is-high-viscosity-glass-ionomer-cement-a-successor-to-amalgam-for-treating-primary-molars
#13
RANDOMIZED CONTROLLED TRIAL
Leandro A Hilgert, Rodrigo G de Amorim, Soraya C Leal, Jan Mulder, Nico H J Creugers, Jo E Frencken
OBJECTIVES: To assess and compare the cumulative survival rate of amalgam and atraumatic restorative treatment (ART) restorations in primary molars over 3 years. METHODS: 280 children aged 6-7 years old were enrolled in a cluster randomized controlled clinical trial using a parallel group design covering two treatment groups: conventional restorative treatment with amalgam (CRT) and atraumatic restorative treatment (ART) using a high-viscosity glass-ionomer (HVGIC) Ketac Molar Easymix...
October 2014: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/25077369/revision-operations-after-previous-stapes-surgery-for-persisting-hearing-loss
#14
COMPARATIVE STUDY
J Skrivan, Z Cada, J Kluh, J Boucek, O Profant, J Betka
OBJECTIVES: The aim of the study was to find out the reasons of the recurrent or persisting hearing loss after previous stapes surgery indicated for otosclerosis. BACKGROUND: Revision stapes surgery is a relatively safe surgical method. Recurrent or persisting conductive hearing loss is commonly caused by prosthesis dislocation and adhesions in the oval window. Hearing loss is directly proportional to the number of previous operations. METHOD: Retrospective analysis of 48 patients after revision stapes surgery was done over a period of 4 years (2005-2008)...
2014: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/25048250/longevity-of-posterior-composite-restorations-a-systematic-review-and-meta-analysis
#15
REVIEW
N J M Opdam, F H van de Sande, E Bronkhorst, M S Cenci, P Bottenberg, U Pallesen, P Gaengler, A Lindberg, M C D N J M Huysmans, J W van Dijken
The aim of this meta-analysis, based on individual participant data from several studies, was to investigate the influence of patient-, materials-, and tooth-related variables on the survival of posterior resin composite restorations. Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we conducted a search resulting in 12 longitudinal studies of direct posterior resin composite restorations with at least 5 years' follow-up. Original datasets were still available, including placement/failure/censoring of restorations, restored surfaces, materials used, reasons for clinical failure, and caries-risk status...
October 2014: Journal of Dental Research
https://www.readbyqxmd.com/read/24950810/adhesion-of-resin-modified-glass-ionomer-cements-may-affect-the-integrity-of-tooth-structure-in-the-open-sandwich-technique
#16
Beata Czarnecka, Anna Kruszelnicki, Anthony Kao, Marta Strykowska, John W Nicholson
OBJECTIVE: To study the interfaces between model cavities prepared in teeth and four glass ionomer cements (two conventional and two resin-modified). METHODS: Ten non-cavitated molars and premolars were used and, in each, two 3mm deep slot preparations were created on opposing sides of the tooth. The teeth were conditioned as appropriate, then restored using the open sandwich technique, using a conventional glass ionomer (Fuji IX, Ketac Molar) or resin modified glass ionomer (Fuji II LC or N100), followed by completion with composite resin...
December 2014: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/24939267/structural-reinforcement-and-sealing-ability-of-temporary-fillings-in-premolar-with-class-ii-mod-cavities
#17
Yuri Dal Bello, João Vicente Barbizam, Vinicius Rosa
AIM: To evaluate the capability to reinforce tooth structure and sealing ability of temporary filling materials in premolars with MOD cavities. The hypothesis is that temporary filling materials can concomitantly prevent microleakage and increase fracture resistance. MATERIALS AND METHODS: Premolars received root canal treatment and MOD cavities. Cavities were restored with non- eugenol cement (CIM), glass ionomer cement (GIC) or light curable composite (BIO). Higid and without restoration were controls...
January 2014: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/24846952/micronucleus-alkaline-and-human-8-oxoguanine-glycosylase-1-modified-comet-assays-evaluation-of-glass-ionomer-cements-in-vitro
#18
COMPARATIVE STUDY
Elizabeta Galić, Antonija Tadin, Nada Galić, Vilena Kašuba, Marin Mladinić, Ružica Rozgaj, Dolores Biočina-Lukenda, Ivan Galić, Davor Zelježić
The purpose of this study was to evaluate the genotoxic potential of components leached from two conventional self-curing glass-ionomer cements (Fuji IX and Ketac Molar), and light-curing, resin modified glass-ionomer cements (Vitrebond, Fuji II LC). Evaluation was performed on human lymphocytes using alkaline and hOGG1 modified comet, and micronucleus assays. Each material, polymerised and unpolymerised, was eluted in extracellular saline (1 cm2 mL-1) for 1 h, 1 day, and 5 days. Cultures were treated with eluates using final dilutions of 10(-2), 10(-3), and 10(-4)...
June 2014: Arhiv za Higijenu Rada i Toksikologiju
https://www.readbyqxmd.com/read/24799118/methods-and-preliminary-findings-of-a-cost-effectiveness-study-of-glass-ionomer-based-and-composite-resin-sealant-materials-after-2-yr
#19
RANDOMIZED CONTROLLED TRIAL
Ann S Goldman, Xi Chen, Mingwen Fan, Jo E Frencken
The cost-effectiveness of glass-carbomer, conventional high-viscosity glass-ionomer cement (HVGIC) [without or with heat (light-emitting diode (LED) thermocuring) application], and composite resin sealants were compared after 2 yr in function. Estimated net costs per sealant were obtained from data on personnel time (measured with activity sampling), transportation, materials, instruments and equipment, and restoration costs for replacing failed sealants from a community trial involving 7- to 9-yr-old Chinese children...
June 2014: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/24783150/a-comparative-evaluation-of-the-effect-of-resin-based-sealers-on-retention-of-crown-cemented-with-three-types-of-cement-an-in-vitro-study
#20
Sumeet Sharma, J R Patel, Rajesh Sethuraman, Sarbjeet Singh, Nikhil Dev Wazir, Harvinder Singh
AIM: In an effort to control postoperative sensitivity, dentin sealers are being applied following crown preparations, with little knowledge of how crown retention might be affected. A previous study demonstrated no adverse effect when using a gluteraldehyde-based sealer, and existing studies have shown conflicting results for resin-based products. This study determined the retention of the casting cemented with three types of cement, with and without use of resin sealers and it determined the mode of failure...
March 2014: Journal of Clinical and Diagnostic Research: JCDR
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