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affect of surface treatment on ceramics

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https://www.readbyqxmd.com/read/29724550/effect-of-different-resin-cements-and-surface-treatments-on-the-shear-bond-strength-of-ceramic-glass-polymer-materials
#1
Gülce Alp, Meryem Gülce Subaşı, William M Johnston, Burak Yilmaz
STATEMENT OF PROBLEM: The effect of different surface treatment techniques on the bond strength of different types of ceramic-glass polymer computer-assisted design and computer-assisted manufacturing (CAD-CAM) materials and resin cements after aging is unknown. PURPOSE: The purpose of this in vitro study was to evaluate the surface roughness of different ceramic-glass polymer CAD-CAM materials after 2 different surface treatments and the effect of material, surface treatment, resin cement, and aging on bond strength...
April 30, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29661579/effect-of-acid-etching-on-tridimensional-microstructure-of-etchable-cad-cam-materials
#2
Fabián Murillo-Gómez, Regina Guenka Palma-Dibb, Mario Fernando De Goes
OBJECTIVE: Evaluate if etching protocols affect superficial/internal microstructural integrity of CAD/CAM ceramic materials. METHODS: Sixty blocks (3×3×3mm) of IPS/Empress-LEU, IPS/e.max-LDC (Ivoclar-Vivadent) and Enamic-PIC (VITA) were used. Lateral surfaces from each block were isolated with Teflon strip and petroleum jelly to keep them untouched. Specimens were distributed into 6 groups (n=10): 1. no treatment (C); 2. hydrofluoric acid (HF) 5%, 20s (HF5%20s); 3...
April 13, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29627218/effect-of-chemical-surface-treatment-of-titanium-on-its-bond-with-dental-ceramics
#3
Monika Parchańska-Kowalik, Emilia Wołowiec-Korecka, Leszek Klimek
STATEMENT OF PROBLEM: Airborne-particle abrasion of titanium is a clinically accepted method of surface preparation. As a side effect of airborne-particle abrasion, particles of the abrasive material get embedded into the surface. How particle presence or removal from the titanium surface affects the strength of the titanium-ceramic bond is unclear. PURPOSE: The purpose of this in vitro study was to determine the effect of removing Al2 O3 particles embedded into the surface by means of chemical surface treatment on the strength of the titanium-ceramic bond...
April 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29603706/effect-of-different-surface-treatments-on-biaxial-flexural-strength-of-yttria-stabilized-tetragonal-zirconia-polycrystal
#4
Teerthesh Jain, Amit Porwal, Sumanth Babu, Zahid A Khan, Chandeep Kaur, Ranu B Jain
INTRODUCTION: Ceramics are widely applied in dentistry owing to their excellent mechanical and physical attributes. The most popular ceramics are Lava™, KaVo Everest, and Cercon. However, it is unclear whether or not a different surface treatment along with low-temperature aging and mechanical loading (ML) affects the physical properties of computer-aided design (CAD)/computer-aided manufacturing (CAM)-machined yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) ceramic. AIM: The objective of this research was to assess the impact of various surface treatments as air-particle abrasion, ML, low-temperature degradation (LTD), and their cumulative effects on biaxial flexural properties of Y-TZP...
March 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29557400/posterior-atrophic-jaws-rehabilitated-with-prostheses-supported-by-5-%C3%A3-5-mm-implants-with-a-nanostructured-calcium-incorporated-titanium-surface-or-by-longer-implants-in-augmented-bone-3-year-results-from-a-randomised-controlled-trial
#5
Giorgio Gastaldi, Pietro Felice, Valeria Pistilli, Carlo Barausse, Daniela Rita Ippolito, Marco Esposito
PURPOSE: To evaluate whether 5.0 × 5.0 mm dental implants with a novel nanostructured calcium-incorporated titanium surface could be an alternative to implants of at least 10.0 mm long placed in bone augmented with bone substitutes in posterior atrophic jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles with 5.0 mm to 7.0 mm bone height above the mandibular canal, and 40 patients with atrophic maxillas with 4...
2018: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/29551381/evaluation-of-the-ceramic-liner-bonding-effect-between-zirconia-and-lithium-disilicate
#6
Sung-Hoon Kim, Chan-Jin Park, Lee-Ra Cho, Yoon-Hyuk Huh
STATEMENT OF PROBLEM: Little information is available for the strength of bonding between zirconia and lithium disilicate as affected by surface pretreatment methods. PURPOSE: The purpose of this in vitro study was to investigate the shear bond strength (SBS) between zirconia core and lithium disilicate (LS2 ) veneered ceramic after surface pretreatments. MATERIAL AND METHODS: Fully sintered yttrium oxide partially stabilized tetragonal zirconia (Y-TZP) disk specimens were fabricated from zirconia ceramic materials...
March 15, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29551378/effect-of-surface-treatments-and-coffee-thermocycling-on-the-color-and-translucency-of-cad-cam-monolithic-glass-ceramic
#7
Gulce Alp, Meryem Gulce Subasi, William M Johnston, Burak Yilmaz
STATEMENT OF PROBLEM: The effects of surface treatments and coffee thermocycling on the color and relative translucency of a recently introduced computer-aided design and computer-aided manufacturing (CAD-CAM) monolithic glass-ceramic are unknown. PURPOSE: The purpose of this in vitro study was to evaluate the effect of coffee thermocycling on the color and relative translucency parameter (RTP) of CAD-CAM monolithic glass-ceramics after different surface treatments...
March 15, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29507918/ultrastructural-analysis-and-long-term-evaluation-of-composite-zirconia-bond-strength
#8
Moustafa N Aboushelib, Hala Ragab, Mohamed Arnaot
PURPOSE: To evaluate the influence of different aging techniques on zirconia-composite microtensile bond strength using different surface treatments over a 5-year follow-up period. MATERIALS AND METHODS: Zirconia disks received three surface treatments: airborne-particle abrasion with 50-μm aluminum oxide particles, selective infiltration etching (SIE), or fusion sputtering (FS). The specimens were bonded to pre-aged composite disks using a composite cement containing phosphate monomers (Panavia F2...
2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29503713/influence-of-nano-alumina-coating-on-the-flexural-bond-strength-between-zirconia-and-resin-cement
#9
Canan Akay, Merve Çakırbay Tanış, Emre Mumcu, Mehmet Ali Kılıçarslan, Murat Şen
PURPOSE: The purpose of this in vitro study is to examine the effects of a nano-structured alumina coating on the adhesion between resin cements and zirconia ceramics using a four-point bending test. MATERIALS AND METHODS: 100 pairs of zirconium bar specimens were prepared with dimensions of 25 mm × 2 mm × 5 mm and cementation surfaces of 5 mm × 2 mm. The samples were divided into 5 groups of 20 pairs each. The groups are as follows: Group I (C) - Control with no surface modification, Group II (APA) - airborne-particle-abrasion with 110 µm high-purity aluminum oxide (Al2 O3 ) particles, Group III (ROC) - airborne-particle-abrasion with 110 µm silica modified aluminum oxide (Al2 O3 + SiO2 ) particles, Group IV (TCS) - tribochemical silica coated with Al2 O3 particles, and Group V (AlC) - nano alumina coating...
February 2018: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29476584/retrospective-evaluation-of-extended-heat-pressed-ceramic-veneers-after-a-mean-observational-period-of-7-years
#10
Sven Rinke, Anne-Kathrin Pabel, Xenia Schulz, Matthias Rödiger, Gerhard Schmalz, Dirk Ziebolz
OBJECTIVES: Retrospective evaluation of extended anterior glass-ceramic veneers 7 years after placement in a private practice. MATERIALS AND METHODS: A total of 31 patients (20 females/11 males) underwent restoration with adhesively luted extended veneers that were fabricated using heat-pressed glass-ceramic (Cergo, Dentsply Sirona). A single dentist restored 101 teeth (maxilla, n = 65; mandible, n = 36). Adhesive cementation was performed using an etch-and-rinse adhesive (OptibondFL, Kerr Corporation), and two different dual-curing composite cements (Variolink, Ivoclar Vivadent/Calibra, Dentsply Sirona)...
February 24, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29333771/-effect-of-hydrofluoric-acid-concentration-on-the-surface-morphology-and-bonding-effectiveness-of-lithium-disilicate-glass-ceramics-to-resin-composites
#11
Qian Hailan, Ren Lingyan, Nie Rongrong, Meng Xiangfeng
OBJECTIVE: This study aimed at determining the influence of hydrofluoric acid (HF) in varied concentrations on the surface morphology of lithium disilicate glass ceramics and bond durability between resin composites and post-treated lithium disilicate glass ceramics. METHODS: After being sintered, ground, and washed, 72 as-prepared specimens of lithium disilicate glass ceramics with dimensions of 11 mm×13 mm×2 mm were randomly divided into three groups. Each group was treated with acid solution [32% phosphoric acid (PA) or 4% or 9...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29333707/impact-of-gastric-acid-induced-surface-changes-on-mechanical-behavior-and-optical-characteristics-of-dental-ceramics
#12
Aditi Kulkarni, James Rothrock, Jeffery Thompson
PURPOSE: To test the impact of exposure to artificial gastric acid combined with toothbrush abrasion on the properties of dental ceramics. Earlier research has indicated that immersion in artificial gastric acid has caused increased surface roughness of dental ceramics; however, the combined effects of acid immersion and toothbrush abrasion and the impact of increased surface roughness on mechanical strength and optical properties have not been studied. MATERIALS AND METHODS: Three commercially available ceramics were chosen for this study: feldspathic porcelain, lithium disilicate glass-ceramic, and monolithic zirconium oxide...
January 14, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29323782/the-effect-of-surface-treatments-on-the-mechanical-and-optical-behaviors-of-cad-cam-restorative-materials
#13
Sevcan Kurtulmus-Yilmaz, Esra Cengiz, Salim Ongun, Izgen Karakaya
PURPOSE: To evaluate the effect of different surface treatments on mechanical and optical properties of lithium disilicate ceramic (IPS e.max CAD), 2 resin nanoceramics (Lava Ultimate, GC Cerasmart), and polymer-infiltrated ceramic network material (Vita Enamic). MATERIALS AND METHODS: CAD/CAM blocks were sectioned into 4 × 1 × 14 mm3 bars for three-point bending test and 1 × 8 × 8 mm3 square specimens were obtained for color and translucency measurements. Bar-shaped and square specimens were divided into five groups according to the surface treatment method as: control (no treatment), hydrofluoric acid etching, airborne-particle abrasion, 2 W and 3 W Er,Cr:YSGG laser irradiation (n = 10)...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29236899/mechanical-behavior-of-yttria-stabilized-tetragonal-zirconia-polycrystal-effects-of-different-aging-regimens
#14
Luís Felipe Guilardi, Gabriel Kalil Rocha Pereira, Vinícius Felipe Wandscher, Marília Pivetta Rippe, Luiz Felipe Valandro
This study aimed to characterize and compare the effect of different aging regimens on surface characteristic (topography and roughness), structural stability (phase transformation) and mechanical performance (Weibull analysis) of a Y-TZP ceramic. Discs (15 × 1.2 mm; VITA In-Ceram YZ) were prepared according to ISO 6872-2015 for biaxial flexural strength testing and randomly assigned into five groups (n = 30): as-sintered, no aging treatment (CTRL); 20 h in autoclave at 134°C, 2 bar pressure (AUT); intermittent mechanical loading at 20 Hz/106 load pulses (MechLoad); AUT followed by MechLoad (AUT+MechLoad); and storage in distilled water at 37°C, for 1 year (STO)...
December 7, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29208795/in-vitro-assessment-of-influence-of-various-bleaching-protocols-on-the-strength-of-ceramic-orthodontic-brackets-bonded-to-bleached-tooth-surface-a-comparative-study
#15
Divya Iska, Raghu Devanna, Madhvi Singh, Rajkiran Chitumalla, Sai C Bala Balasubramanian, Manish Goutam
INTRODUCTION: Esthetics is one of the common issues because of which patients consult dental orthodontic treatment. Two ways of tooth bleaching are available these days, which includes in-office bleach and home bleach. Various bleaching protocols are available these days for treating the tooth surfaces. Hence, we planned the present study for investigating the impact of various intracoronal bleaching protocols on shear bond strength of ceramic brackets bonded to tooth surface after bleaching...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29140719/effects-of-different-etching-methods-and-bonding-procedures-on-shear-bond-strength-of-orthodontic-metal-brackets-applied-to-different-cad-cam-ceramic-materials
#16
S Kutalmış Buyuk, Ahmet Serkan Kucukekenci
OBJECTIVE: To investigate the shear bond strength (SBS) of orthodontic metal brackets applied to different types of ceramic surfaces treated with different etching procedures and bonding agents. MATERIALS AND METHODS: Monolithic CAD/CAM ceramic specimens (N = 120; n = 40 each group) of feldspathic ceramic Vita Mark II, resin nanoceramic Lava Ultimate, and hybrid ceramic Vita Enamic were fabricated (14 × 12 × 3 mm). Ceramic specimens were separated into four subgroups (n = 10) according to type of surface treatment and bonding onto the ceramic surface...
March 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29124794/effect-of-home-bleaching-on-the-translucency-of-cad-cam-systems
#17
Muhammet Karci, Necla Demir
PURPOSE: To evaluate the effect of a home bleaching agent (Opalescence PF) on the translucency of CAD/CAM ceramic systems. MATERIALS AND METHODS: The 28 sintered ceramic specimens (IPS Empress CAD and IPS e.max CAD; 15 mm long, 10 mm wide, 1 mm thick) were divided into two subgroups as control and bleaching groups (n = 7). Carbamide peroxide (CP), 16%, home bleaching agent was applied onto the surface of each specimen for 6 hours per day for 7 days. A spectrophotometer (VITA Easyshade Advance) was used to measure the CIE L(*) a(*) b(*) coordinates and the reflectance value (Y) of the specimens on white and black backgrounds...
November 10, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29049418/effects-of-femtosecond-laser-and-other-surface-treatments-on-the-bond-strength-of-metallic-and-ceramic-orthodontic-brackets-to-zirconia
#18
Verónica García-Sanz, Vanessa Paredes-Gallardo, Carlos Bellot-Arcís, Omel Mendoza-Yero, Carlos Doñate-Buendía, Javier Montero, Alberto Albaladejo
Femtosecond laser has been proposed as a method for conditioning zirconia surfaces to boost bond strength. However, metallic or ceramic bracket bonding to femtosecond laser-treated zirconia surfaces has not been tested. This study compared the effects of four conditioning techniques, including femtosecond laser irradiation, on shear bond strength (SBS) of metallic and ceramic brackets to zirconia.Three hundred zirconia plates were divided into five groups: 1) control (C); 2) sandblasting (APA); 3) silica coating and silane (SC); 4) femtosecond laser (FS); 5) sandblasting followed by femtosecond laser (APA+SC)...
2017: PloS One
https://www.readbyqxmd.com/read/28945667/immediate-early-and-delayed-implants-a-2-year-prospective-cohort-study-of-131-transmucosal-flapless-implants-placed-in-sites-with-different-pre-extractive-endodontic-infections
#19
Carlo Prati, Fausto Zamparini, Chiara Pirani, Maria Rosaria Gatto, Adriano Piattelli, Maria Giovanna Gandolfi
INTRODUCTION: To evaluate clinical outcome of early, immediate, and delayed transmucosal implants placed in patients affected by acute/chronic endodontic lesions. MATERIALS AND METHODS: Eighty-five consecutive patients received 131 titanium implants with zirconium-oxide blasted surface. Pre-extractive diagnosis represented the main criteria for implant placement timing, following "best treatment" criteria. Implants were placed with flapless transmucosal technique...
October 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28913890/interfacial-fracture-toughness-of-adhesive-resin-cement-lithium-disilicate-resin-composite-blocks
#20
Samer Mesmar, N Dorin Ruse
PURPOSE: Resin composite blocks (RCB) are advocated as alternative to ceramic blocks (CB). Prior to use, adherence to these materials should characterized. This study aimed to test the null hypothesis (H0 ) that material and surface treatment combinations do not influence interfacial fracture toughness (KIC ) of a self-cured adhesive resin cement [RelyX Ultimate (RXU)] to RCB or CB, under nonaged and aged conditions. MATERIALS AND METHODS: Two RCB, Lava Ultimate (LU) and Enamic (EN), and one CB, IPS e...
September 15, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
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