Contents
Academic literature on the topic 'Translucent Y-TZP'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Translucent Y-TZP.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Translucent Y-TZP"
1
Zhang, Chang-yuan, Check Agingu, James Kit Hon Tsoi, and Hao Yu. "Effects of Aging on the Color and Translucency of Monolithic Translucent Y-TZP Ceramics: A Systematic Review and Meta-Analysis of In Vitro Studies." BioMed Research International 2021 (January 25, 2021): 1–10. http://dx.doi.org/10.1155/2021/8875023.
Full textAbstract:
Background. Monolithic restorations made of translucent yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) have become popular over the past few decades. However, whether aging affects the color and translucency of monolithic translucent Y-TZP is unclear. Objective. The aim of this systematic review and meta-analysis of in vitro studies was to evaluate the effects of aging on the color and translucency of monolithic translucent Y-TZP ceramics. Materials and Methods. This systematic review/meta-analysis was reported according to the PRISMA statement and registered in the OSF registries (https://osf.io/5qjmu). Four databases including Medline via the PubMed, Embase, and Web of Science databases and the Cochrane Library were searched using no publication year and language limits. The last search was executed on November 20, 2020. In vitro studies comparing the translucency and/or color of monolithic translucent Y-TZP ceramics before and after simulated aging were selected. Meta-analyses were performed using Review Manager software (version 5.3, Cochrane Collaboration, Oxford, UK) with random-effects models at a significance level of 0.05. A risk-of-bias assessment was also performed for the included studies. Results. Of the 188 potentially relevant studies, 13 were included in the systematic review. The hydrothermal aging duration ranged from 1 to 100 h at relatively similar temperatures (~134°C). In the general meta-analyses, the aged Y-TZP ceramics exhibited similar translucency parameter (TP), L ∗ , and b ∗ values compared with the nonaged controls ( P = .73 , P = .49 , and P = .62 , respectively). Moreover, there was a significant difference between the aged and nonaged Y-TZP ceramics in the a ∗ value ( P = .03 ; MD = − 0.26 ; 95% CI = − 0.51 to − 0.02 ), favoring the nonaged Y-TZP ceramics. The subgroup analyses showed that the duration of aging contributed to changes in the translucency and color of the Y-TZP ceramics. Conclusions. The optical properties of monolithic translucent Y-TZP ceramics were stable after hydrothermal aging at 134°C and 0.2 MPa for ≤20 h. Moreover, clinically unacceptable changes in the translucency and color of monolithic translucent Y-TZP ceramics were found after hydrothermal aging for >20 h.
2
Tholey, M. J., M. Keuper, B. A. Just, and J. Fischer. "Comparison of LTD between Y-TZP and high translucent Y-TZP." Dental Materials 31 (2015): e5. http://dx.doi.org/10.1016/j.dental.2015.08.012.
Full text
3
Chin, Chuin Hao, Andanastuti Muchtar, Noor Faeizah Amat, Mariyam Jameelah Ghazali, and Norziha Yahaya. "Influence of Sintering Temperature on the Translucency of Sintered Zirconia by Cold Isostatic Pressing." Advanced Materials Research 896 (February 2014): 591–95. http://dx.doi.org/10.4028/www.scientific.net/amr.896.591.
Full textAbstract:
Zirconia-based ceramics exhibit excellent mechanical properties and biocompatibility in dental applications. However, the production of translucent zirconia that offers resemblance to real teeth remains a challenge. This study aims to fabricate zirconia compacts by cold isostatic pressing (CIP) and investigate the influence of sintering temperature on translucency, microstructure, hardness, and density of yttria-stabilized tetragonal zirconia polycrystals (Y-TZP). Zirconia stabilized with 3 mol% yttria (3Y-TZP) was pressed by uniaxial pressing and later by CIP to produce green bodies in pellet form. Subsequently, the green bodies were sintered at different temperatures (1100 °C to 1300 °C). The specimens were then investigated in terms of translucency, density, and hardness. X-ray diffraction was also performed and the microstructure of the specimens was observed under a scanning electron microscope (SEM). Density and light transmittance tests results showed that zirconia sintered at 1200 °C exhibits the highest density (5.957 g/cm3) and light transmittance intensity. Vickers hardness test showed that higher sintering temperatures result in higher hardness of the sintered zirconia. SEM micrographs illustrate the effect of microstructural changes on the translucency of zirconia. A temperature of 1200 °C is found to be the recommended sintering temperature at which zirconia exhibiting optimum translucency and mechanical properties is produced. CIP is found to be a suitable consolidation method to produce high-density translucent zirconia.
4
Wahba, Mennatallah Mohie, Ashraf Hussien Sherif, Amr S. El-Etreby, and Tarek Salah Morsi. "The effect of different surface treatments on color and translucency of bilayered translucent nano-crystalline zirconia before and after accelerated aging." Brazilian Dental Science 22, no. 2 (April 30, 2019): 203–12. http://dx.doi.org/10.14295/bds.2019.v22i2.1622.
Full textAbstract:
Objective: Despite the higher translucency of nano-crystalline Y-TZP than the conventional Y-TZP, it couldn’t be used in the anterior region of the mouth in its fully anatomical form without veneering for better esthetics. This study evaluated the color change (ΔE) and translucency parameter (TP) of the bilayered nano-crystalline zirconia restorations after different treatments of the zirconia surface before and after accelerated aging. Material and Methods: Forty samples of inCoris TZI were cut in the form of discs 15 mm (diameter) and 1mm (thickness) so that after sintering each disc dimensions’ would be 12 mm (diameter) and 0.8 mm (thickness). All discs were colored by dipping in aqueous zirconia coloring solution of shade A2, then divided into four groups according to the type of surface treatment received before sintering; being tribochemical silica coating, zirconia powder deposition, glass grading, and a control untreated group. After sintering, all discs were veneered with a layer of porcelain 0.7 mm (thickness) and 12 mm (diameter). (ΔE) and TP were measured using VITA Easyshade Compact spectrophotometer before and after accelerated autoclave aging. Results: Different surface treatments applied had significant effect (P<0.05) over ΔE and TP. Glass graded group showed the highest ΔE value and the least TP value among both un-aged and aged sub-groups. Conclusion: Different surface treatments applied affected the color and translucency negatively where the control untreated group showed the highest TP and the least color deviation from the A2 color parameters. On the other hand, accelerated autoclave aging had no effect over translucency or color.KeywordsAging; Ceramic restoration; Color; Translucent.
5
Monteiro, K. N., Y. P. Correia, L. A. Genova, and P. F. Cesar. "Effect of shade and ageing on strength of translucent Y-TZP." Dental Materials 32 (2016): e9-e10. http://dx.doi.org/10.1016/j.dental.2016.08.019.
Full text
6
Lenz, Ulysses, Rodrigo Alessandretti, and Alvaro Della Bona. "The Influence of Surface Treatments on Resin Bond Strength to Zirconia." Current Dentistry 2, no. 1 (September 10, 2020): 29–35. http://dx.doi.org/10.2174/2542579x02666191218123853.
Full textAbstract:
Background: It’s shown that the clinical success of ceramic restorations much depends on the quality and durability of the bond to ceramic. For zirconia-based ceramics (Y-TZP), the surface treatment has a substantial impact on bond strength. Therefore, the bond strength evaluation of Y-TZP surface treatments is a requirement for predicting the clinical performance of such restorations. Objective: Evaluating the resin bond strength to Y-TZP after different surface treatments. Methods: Monolithic Y-TZP (Zenostar Zr Translucent, Wieland Dental, Rosbach vor der Höhe, Germany) blocks were bonded to resin composite blocks using a resin-based cement system after two Y-TZP surface treatments: APA- airborne particle abrasion with alumina particles; and CJ- silicatization (Cojet sand, 3M ESPE, St. Paul, MN, USA). A silane coupling agent and an adhesive system were applied to the treated Y-TZP surfaces and resin composite blocks were cemented (RelyX Ultimate, 3M ESPE, St. Paul, MN, USA) and light activated from all sides. These structures were cut to obtain bar-shaped specimens (n=30), which were stored in 37ºC distilled water for 7 days before microtensile testing. Specimens were loaded to failure under tension using a universal testing machine. Data was statistically analyzed using Students t test (α=0.05) and Weibull distribution. Failure modes were evaluated using optical (OM) and scanning electron microscopy (SEM). Results: Mean bond strength values (CJ= 25.7±8.2 MPa; APA= 22.0±6.3 MPa) were statistically similar (p>0.05). No difference was found for the characteristic strengths (σ0) and for Weibull moduli (m) since the confidence intervals (95% CI) overlapped. The bond strength values for a 5% failure probability (σ5%) were 12.4 (CJ) and 11.5 (APA). All fractures were due to cohesive failure within the adhesive cement system. Conclusion: Both Y-TZP surface treatments (CJ and APA) produced similar structural reliability and short-term bond strength to a resin cement system.
7
Zhang, Fei, Masanao Inokoshi, Maria Batuk, Joke Hadermann, Ignace Naert, Bart Van Meerbeek, and Jef Vleugels. "Strength, toughness and aging stability of highly-translucent Y-TZP ceramics for dental restorations." Dental Materials 32, no. 12 (December 2016): e327-e337. http://dx.doi.org/10.1016/j.dental.2016.09.025.
Full text
8
Alessandretti, Rodrigo, Raissa Ribeiro, Marcia Borba, and Alvaro Della Bona. "Fracture Load and Failure Mode of CAD-on Ceramic Structures." Brazilian Dental Journal 30, no. 4 (July 2019): 380–84. http://dx.doi.org/10.1590/0103-6440201902574.
Full textAbstract:
Abstract This study evaluated the fracture load (Lf) and the failure mode of CAD-on (Ivoclar Vivadent) ceramic structures, testing the hypotheses that Lf of multilayer structures is governed by the veneering ceramic strength and that chipping is more frequent in multilayer than monolithic structures. Disc-shaped specimens were fabricated as follows: CAD-on- trilayer structure composed of Y-TZP (yttria stabilized tetragonal zirconia polycrystal- IPS e.max ZirCAD) infrastructure, fusion glass-ceramic (IPS e.max CAD Crystall/Connect) and lithium disilicate-based glass-ceramic (IPS e.max CAD); YLD- bilayer structure composed of Y-TZP infrastructure and fluorapatite layering ceramic (IPS e.max Ceram); LDC- monolithic lithium-disilicate glass-ceramic (IPS e.max CAD); and YZW- monolithic Y-TZP (Zenostar Zr Translucent). The specimens were loaded in compression until failure and fracture surfaces were evaluated using fractographic principles. Lf values were statistically analyzed using the Weibull statistics, Kruskal-Wallis and Dunn tests (a= 0.05). YZW (1329 N) and CAD-on (1085 N) showed the greatest Lf median values, followed by YLD (832 N) and LDC (421 N). All monolithic structures (LDC and YZW) fractured catastrophically and all YLD structures failed by chipping. The CAD-on technique seems to be a very promising fabrication process because it showed high Lf, similar to monolithic zirconia, and small chipping rate.
9
Cho, Young-Eun, Young-Jun Lim, Jung-Suk Han, In-Sung Luke Yeo, and Hyung-In Yoon. "Effect of Yttria Content on the Translucency and Masking Ability of Yttria-Stabilized Tetragonal Zirconia Polycrystal." Materials 13, no. 21 (October 22, 2020): 4726. http://dx.doi.org/10.3390/ma13214726.
Full textAbstract:
Translucent zirconia, manufactured by increasing the yttria content, offers improved translucency, but may have a negative effect on esthetic outcomes under clinical conditions such as discolored abutment because of the reflection of the underlying color. The purpose of this in vitro study was to compare the translucency parameter and masking ability of 3 mol % yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP (Katana HT)), 4Y-ZP (Katana STML), and 5Y-ZP (Katana UTML) with those of lithium disilicate (Rosetta SM). Zirconia and lithium disilicate specimens of 10 mm diameters and 0.8 and 1.5 mm thicknesses were fabricated. Their CIE L*a*b* values (L*, brightness; a*, red-green value; b*, yellow-blue value) were measured at the center of the specimens against black and white backgrounds using a spectrophotometer, and translucency parameter (TP) values were determined. The microstructure of the specimens was observed using scanning electron microscopy. Four cylindrical backgrounds of different shades were prepared. The zirconia and lithium disilicate specimens were placed on the backgrounds without any intervening medium. CIE L*a*b* values were obtained, and the color difference value (ΔE) was calculated. Thresholds for acceptability and perceptibility were assumed as ΔE = 5.5 and ΔE = 2.6, respectively, to evaluate masking ability. Data were compared using one-way analysis of variance and post-hoc was performed using Scheffe’s test (α = 0.05). In zirconia specimens, the TP value increased as the yttria content increased from 3 mol %, through 4 mol % to 5 mol %, and all zirconia specimens showed lower TP values than lithium disilicate specimens did. All zirconia specimens showed optimal masking ability against a normal dentin shade (ND3) and acceptable masking ability against titanium at a minimum thickness of 1.5 mm. However, no zirconia specimen could mask severely discolored dentin (ND9), regardless of thickness. The decrease in zirconia thickness from 1.5 to 0.8 mm significantly increased translucency. Monolithic Y-TZP ceramics could mask a normal dentin background but could not mask severely discolored dentin at either 0.8 or 1.5 mm thicknesses.
10
Hemdan, Soad, sahar abd el-aziz, and Zienb El-Sharkwy. "Comparative Study Between Monolithic Translucent Zirconia (Y-TZP) and IPS Empress 2 in Marginal Fit and Fracture Strength." Al-Azhar Dental Journal for Girls 6, no. 4 (October 1, 2019): 391–99. http://dx.doi.org/10.21608/adjg.2019.7627.1085.
Full textDissertations / Theses on the topic "Translucent Y-TZP"
1
Lindgren, Jenny. "Brotthållfasthet hos singelkronor för anteriort bruk av monolitisk högtranslucent Y-TZP, semimonolitisk translucent Y-TZP och monolitiskt litiumdisilikat." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19847.
Full textAbstract:
Syfte: Syftet med föreliggande in-vitro-studie är att utvärdera brotthållfastheten av singelkronor utformade som en central överkäksincisiv framställda av monolitisk högtranslucent Y-TZP, buckalt porslinsskiktad underkonstruktion av translucent Y-TZP eller monolitisk litiumdisilikatbaserad glaskeram. Material och metod: Sexton monolitiska kronor av högtranslucent Y-TZP framställdes med CAD/CAM-teknik, Coprasmile®(HTW) och Prettau® Anterior®(HTZ). Sexton kronor av translucent Y-TZP med buckal porslinspåbränning framställdes med CAD/CAM-teknik och manuell porslinsuppläggning, Copran HT®(LTW) och Prettau® Zircon(LTZ). Åtta monolitiska kronor av litiumdislikatbaserad glaskeram framställdes med pressteknik, IPS e.max® Press(LD). Samtliga kronor genomgick termocykling före cementering till stansar. Därefter genomgick kronorna cyklisk mekanisk förbelastning innan de frakturerades i en universal testmaskin. Resultat: Kronorna av translucent Y-TZP med buckal porslinyta visade högst brotthållfasthetsvärde. Gruppen LTW visade signifikant högre brotthållfasthetsvärde jämfört med de andra grupperna: HTW, HTZ, LTZ och LD. Slutsats: Fortsatt utveckling av testmetod för kronor utformade som incisiver är nödvändigt för att öka förståelsen kopplat till material, utformning av ersättning och testmetod med klinisk relevans. Det finns behov av vidare studier för högtranslucent Y-TZP samt semimonolitiska kronor av translucent Y-TZP. Beroende på materialval och kronutformning visades skillnader, men med studiens begränsningar kan ingen generell slutsats dras gällande brotthållfastheten.Purpose: The purpose of this in-vitro-study is to evaluate the fracture resistance between high translucent monolithic Y-TZP, translucent Y-TZP with buccal porcelain veneering and monolithic lithium disilicate based glass-ceramic, designed as a single central maxilla crown. Material and method: Sixteen monolithic high translucent Y-TZP crowns were fabricated using CAD/CAM technique, Coprasmile®(HTW) and Prettau® Anterior®(HTZ). Sixteen crowns of translucent Y-TZP and buccal porcelain veneering were fabricated using CAD/CAM technique and manually layered porcelain, Copran HT®(LTW) and Prettau® zircon(LTZ). Eight monolithic crowns of lithium disilicate based glass-ceramic were fabricated using pressing techniques, IPS e.max® Press(LD). All crowns underwent thermo cycling prior to cementation to dies. Subsequently all crowns were subjected to a cyclic mechanical preload before being exposed to load-to-fracture in a universal testing machine. Result: Translucent Y-TZP with buccal veneering showed the highest rupture strength amongst the groups. The group LTW showed significantly higher fracture strength compared to the other groups: HTW, HTZ, LTZ and LD. Conclusion: Further development of testing methods for anterior crowns are necessary to increase the understanding connected to materials, crown designs and test methods for clinical relevance. There is a need in further studies for high-translucent Y-TZP and semi monolithic crowns made of translucent Y-TZP. There showed differences depending on the choice of material and crown form, but within the limitation of this study, no general conclusion can be drawn regarding the fracture strength.
2
Kafafi, Kholod, and Svitlana Hes. "Ytbehandlingsmetoder och deras påverkan av bindningsstyrkan mellan translucent Y-TZP och ett adhesivt cement." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19827.
Full text
3
Arneryd, Philip, and Annika Kindblom. "Fracture strength of monolithic high and low translucent Y-TZP crowns with different thicknesses." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19815.
Full textAbstract:
Syfte. Att jämföra hållfastheten hos fullanatomiska monolitiska hög- och lågtranslucenta kronor av Y-TZP (yttriastabiliserad tetragonal polykristallin zirkoniumdioxid) i olika tjocklekar.Material och metod. 80 standardiserade kronor skapades utifrån en mastermodell av underkäkens första molar. 40 Lava Zirconia by 3M ESPE, ett monolitiskt lågtranslucent Y-TZP material. 40 Lava Plus by 3M ESPE, ett monolitiskt högtranslucent Y-TZP material. I varje grupp gjordes tio kronor i tjocklekarna 1.0 mm, 0.7 mm, 0.5 mm och 0.3 mm. Samtliga kronor genomgick termocykling och förbelastades för att stimulera åldrande och normalt slitage. Slutligen placerades kronorna i en testmaskin och genomgick belastning till brott. En tandläkare och en tandtekniker utförde alla laboratorieförsök. Reslutat. Studien visade signifikant skillnad mellan de olika tjocklekarna inom båda materialen där styrkan ökade med ökad tjocklek. Ingen signifikant skillnad i belastning kunde påvisas mellan monolitisk hög- och lågtranslucent Y-TZP vid last till fraktur. Vid jämförelse inom varje tjocklek sågs ingen signifikant skillnad förutom vid 0.5 mm där den högtranslucenta Y-TZP visade högre styrka jämfört med motsvarande tjocklek i den lågtranslucenta gruppen. Slutsats. De monolitiska hög- och lågtranslucenta Y-TZP presterade likvärdigt. Användandet av monolitiska högtranslucenta Y-TZP kan leda till bättre estetik och färre biologiska komplikationer tack vare mer minimalinvasiva preparationer. Kliniska studier behövs för att bekräfta dessa resultat.Objective. The aim of the study was to examine the fracture strength of fully anatomical monolithic high translucent yttria-stabilized tetragonal zirconia polycrystal, Y-TZP, crowns and to compare them with monolithic low translucent Y-TZP crowns in different thicknesses.Materials and methods. 80 standardized crowns were made out of a master model resembling a first mandibular molar made in composite material; 40 crowns made of Lava Zirconia by 3M ESPE, a monolithic low translucent Y-TZP material, and 40 crowns made of Lava Plus by 3M ESPE, a monolithic high translucent Y-TZP material. In each group ten crowns with the thicknesses of 1.0 mm, 0.7 mm, 0.5 mm and 0.3 mm were made. All crowns underwent thermocycling and preload to simulate aging and normal wear. Finally the specimens were placed in a testing jig and underwent load to fracture. Results. A significant difference was seen between the different thicknesses within both groups. The strength increased with added thicknesses. No significant difference was found when comparing the monolithic high and low translucent Y-TZP. When comparing the materials in each thickness a significant difference was found in the 0.5 mm group where the high translucent Y-TZP had a higher mean fracture strength value compared to the 0,5 mm group in the low translucent Y-TZP group.Conclusions. The monolithic low and high translucent Y-TZP perform equally well. The use of monolithic high translucent Y-TZP could result in more aesthetic results and the minimal invasive preparation could lead to a reduction in biological complications. This could be beneficial for the patient since the results suggest that even a thin restoration sustains reasonable load in an in-vitro environment. Clinical studies are needed to confirm this suggestion.