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Porcelain Zirconia Wear

Romina Brignardello-Petersen
No abstract text is available yet for this article.
February 2018: Journal of the American Dental Association
Virginia Hogsett Box, Cortino Sukotjo, Kent L Knoernschild, Stephen D Campbell, Fatemeh S Afshari
The purpose of this retrospective study was to assess the incidence of biologic and technical complications for implant-supported fixed complete dental prostheses (IFCDPs) and their relationship to oral health-related quality of life (OHQoL) and patient-reported outcomes. Metal-acrylic (MA), retrievable crown (RC), monolithic zirconia (MZ), and porcelain veneered zirconia (PVZ) prostheses were included. Patients who received an IFCDP at least 1 year prior to recall were identified. Exclusion criteria were: (1) an opposing complete denture and (2) time in service >70 months...
February 2018: Journal of Oral Implantology
J F Esquivel-Upshaw, M J Kim, S M Hsu, N Abdulhameed, R Jenkins, D Neal, F Ren, A E Clark
OBJECTIVES: To test the hypothesis that there is no difference in the in vivo maximum wear of enamel opposing monolithic zirconia crowns, enamel opposing porcelain fused to metal crowns and enamel opposing enamel. METHODS: Thirty patients needing single crowns were randomized to receive either a monolithic zirconia or metal-ceramic crown. Two non-restored opposing teeth in the same quadrants were identified to serve as enamel controls. After cementation, quadrants were scanned for baseline data...
January 2018: Journal of Dentistry
C D'Arcangelo, L Vanini, G D Rondoni, M Vadini, F De Angelis
The purpose of the present in vitro study was to compare the two-body wear resistance of a type 3 gold alloy (Aurocast8), two lithium disilicate glass ceramics (IPS e.max CAD and IPS e.max Press), a heat-pressed feldspathic porcelain (Cerabien ZR Press), an yttria-stabilized tetragonal zirconia polycrystal ceramic (Katana Zirconia ML), and three heat-cured composite resins (Ceram.X Universal, Enamel Plus Function, and Enamel Plus HRi) opposing antagonistic cusps made out of the same restorative materials. Ten 6-mm-thick samples and 10 cusp-shaped abraders were manufactured with each test material (n=10) according to standard laboratory procedures...
January 2018: Operative Dentistry
Oliver Schubert, Ephraim Nold, Matthias Obermeier, Kurt Erdelt, Michael Stimmelmayr, Florian Beuer
OBJECTIVES: Computer-aided technologies can help to minimize clinical complications of zirconia-based restorations such as veneering porcelain fractures. The aim of this study was to evaluate different veneering approaches for zirconia single crowns regarding contact wear, fracture strength, and failure mode. METHODS: Six different types of computer-aided design (CAD) crowns were manufactured and conventionally cemented on 10 metal dies each: three groups with a zirconia framework and a CAD/CAM-fabricated veneering cap ("digital veneering system": DVS, CAD-on, Infix CAD), zirconia-based crowns with pressed veneering caps (Infix Press), zirconia framework containing the dentin layer with only the incisal enamel material added (dentin-core), and conventional substructure with powder buildup veneering porcelain (layering technique)...
2017: International Journal of Computerized Dentistry
Hu Guoxin, Yang Ying, Jiang Yuemei, Xia Wenjing
OBJECTIVE: This study evaluated the wear of an antagonist and friction and wear properties of dental zirconia ceramic that was subjected to microwave and conventional sintering methods. METHODS: Ten specimens were fabricated from Lava brand zirconia and randomly assigned to microwave and conventional sintering groups. A profile tester for surface roughness was used to measure roughness of the specimens. Wear test was performed, and steatite ceramic was used as antagonist...
April 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
R Sh Gvetadze, E E Djakonenko, I Yu Lebedenko
No abstract text is available yet for this article.
2016: Stomatologii︠a︡
Jun Nakashima, Yohsuke Taira, Takashi Sawase
The purpose of the present study was to evaluate the wear of four different ceramics and human enamel. The ceramics used were lithium disilicate glass (e.max Press), leucite-reinforced glass (GN-Ceram), yttria-stabilized zirconia (Aadva Zr), and feldspathic porcelain (Porcelain AAA). Hemispherical styli were fabricated with these ceramics and with tooth enamel. Flattened enamel was used for antagonistic specimens. After 100,000 wear cycles of a two-body wear test, the height and volume losses of the styli and enamel antagonists were determined...
June 2016: European Journal of Oral Sciences
Osamu Saiki, Hiroyasu Koizumi, Nobutaka Akazawa, Akihisa Kodaira, Kentaro Okamura, Hideo Matsumura
This study compared the wear characteristics of a heat-pressed lithium disilicate ceramic material opposed to feldspathic porcelain, a lithium disilicate glass ceramic, and zirconia materials. Ceramic plate specimens were prepared from feldspathic porcelain (EX-3 nA1B), lithium disilicate glass ceramics (e.max CAD MO1/C14), and zirconia (Katana KT 10) and then ground or polished. Rounded rod specimens were fabricated from heat-pressed lithium disilicate glass ceramic (e.max press LT A3) and then glazed or polished...
2016: Journal of Oral Science
Amanda Ouzer
Implant-supported, full-arch hybrid prostheses have developed from cast-metal frameworks with acrylic or porcelain to all-ceramic zirconia frameworks. CAD/CAM manufacturing removed the inaccuracies seen with casting and made use of zirconia possible. The materials and processes for prosthodontic fabrication are explained. Zirconia is highly opaque and versatile. However, porcelain-veneered zirconia frameworks have shown higher enamel wear, among other problems. Lithium disilicate has been shown to be more translucent than zirconia...
November 2015: New York State Dental Journal
Camillo D'Arcangelo, Lorenzo Vanini, Giuseppe D Rondoni, Francesco De Angelis
STATEMENT OF PROBLEM: Contemporary pressable and computer-aided design/manufacturing (CAD/CAM) ceramics exhibit good mechanical and esthetic properties. Their wear resistance compared with human enamel and traditional gold based alloys needs to be better investigated. PURPOSE: The purpose of this in vitro study was to compare the 2-body wear resistance of human enamel, gold alloy, and 5 different dental ceramics, including a recently introduced zirconia-reinforced lithium silicate ceramic (Celtra Duo)...
March 2016: Journal of Prosthetic Dentistry
Roya Zandparsa, Rabie M El Huni, Hiroshi Hirayama, Marc I Johnson
STATEMENT OF PROBLEM: The wear of tooth structure opposing different advanced dental ceramic systems requires investigation. PURPOSE: The purpose of this in vitro study was to compare the wear of advanced ceramic systems against human enamel antagonists. MATERIAL AND METHODS: Four ceramic systems (IPS e.max Press, IPS e.max CAD, Noritake Super Porcelain EX-3, and LAVA Plus Zirconia) and 1 control group containing human enamel specimens were used in this study (n = 12)...
February 2016: Journal of Prosthetic Dentistry
Katharina Kuhn, Heike Rudolph, Michael Graf, Matthias Moldan, Shaoxia Zhou, Martin Udart, Andrea Böhmler, Ralph G Luthardt
BACKGROUND: Against the background of increasing use of dental implants, and thus an increasing prevalence of implant-associated complications, a deeper understanding of the biomolecular mechanisms in the peri-implant tissue is needed. Peri-implant soft tissue is in direct contact with transmucosal dental implant abutments. The aim of this trial is to distinguish the biomolecular and histological interactions of various dental abutment materials with peri-implant soft tissue. METHODS/DESIGN: The study is designed as a prospective, randomized, investigator-initiated clinical pilot trial with blinded assessment...
October 15, 2015: Trials
Juha Pihlaja, Ritva Näpänkangas, Ritva Kuoppala, Aune Raustia
STATEMENT OF PROBLEM: The mechanical properties of zirconia suggest that it might serve as a material for abutment crowns for partial removable dental prostheses (RDPs). Only limited clinical evidence is available for the use of ceramics as abutment crowns. PURPOSE: The purpose of this retrospective clinical study was to evaluate the outcome of veneered zirconia single crowns in abutment teeth for RPDs in participants treated by predoctoral students. MATERIAL AND METHODS: Thirty-seven veneered zirconia single crowns in 17 participants (9 men and 8 women; mean age 62...
November 2015: Journal of Prosthetic Dentistry
Verena Preis, Katharina Grumser, Sibylle Schneider-Feyrer, Michael Behr, Martin Rosentritt
AIM: To investigate the two-body wear performance of dental ceramics after different clinical surface treatments as a function of number of wear cycles. MATERIAL AND METHODS: Standardized specimens (n=72/material) were prepared from two different zirconia ceramics, a veneering porcelain, and a lithiumdisilicate glass ceramic. Specimens were progressively glazed, ground, and polished. After each treatment step 24 specimens per material were kept at the obtained surface state...
January 2016: Journal of the Mechanical Behavior of Biomedical Materials
Zhen Pang, Asima Chughtai, Irena Sailer, Yu Zhang
OBJECTIVES: A recent 3-year randomized controlled trial (RCT) of tooth supported three- to five-unit zirconia-ceramic and metal-ceramic posterior fixed dental prostheses (FDPs) revealed that veneer chipping and fracture in zirconia-ceramic systems occurred more frequently than those in metal-ceramic systems [1]. This study seeks to elucidate the underlying mechanisms responsible for the fracture phenomena observed in this RCT using a descriptive fractographic analysis. METHODS: Vinyl-polysiloxane impressions of 12 zirconia-ceramic and 6 metal-ceramic FDPs with veneer fractures were taken from the patients at the end of a mean observation of 40...
October 2015: Dental Materials: Official Publication of the Academy of Dental Materials
Rafat Amer, Duygu Kürklü, William Johnston
STATEMENT OF PROBLEM: Zirconia complete coverage crowns are being widely used as restorations because of their high strength and improved esthetics. Data are sparse about the change in surface roughness of this ceramic material after repeated mastication cycles of opposing enamel. PURPOSE: The purpose of this study was to investigate changes in the surface roughness after being subjected to 3-body wear-opposing human enamel of 3 types of ceramics: dense sintered yttrium-stabilized zirconia (Z); lithium disilicate (L); and a conventional low-fusing feldspathic porcelain (P) treated to impart a rough, smooth, or glazed surface...
August 2015: Journal of Prosthetic Dentistry
Osamu Saiki, Hiroyasu Koizumi, Hiroshi Nogawa, Haruto Hiraba, Nobutaka Akazawa, Hideo Matsumura
The purpose of this study was to evaluate the influence of ceramic surface texture on the wear of rounded rod specimens. Plate specimens were fabricated from zirconia (ZrO2), feldspathic porcelain, and lithium disilicate glass ceramics (LDG ceramics). Plate surfaces were either ground or polished. Rounded rod specimens with a 2.0-mm-diameter were fabricated from type 4 gold alloy and heat-pressed ceramics (HP ceramics). Wear testing was performed by means of a wear testing apparatus under 5,000 reciprocal strokes of the rod specimen with 5...
2014: Dental Materials Journal
Jung Nam, Hiro Tokutomi
This clinical report describes the complete mouth reconstruction of a patient with a worn dentition. Computer-aided design and computer-aided manufacturing processed porcelain fused-to-zirconia prostheses were used to achieve good esthetics, function, and biomechanics.
February 2015: Journal of Prosthetic Dentistry
Mai Hara, Yusuke Takuma, Toru Sato, Taku Koyama, Masao Yoshinari
The wear performances of bovine tooth enamel (BTE) against translucent tetragonal zirconia polycrystals (TZP) compared to that of feldspar porcelain and the influence of surface treatments of translucent TZP were investigated by the two-body wear test. Translucent TZP and feldspar porcelain were used as hemisphere abrader specimens with a radius of curvature of 5 mm; flat BTE surfaces were used as substrate specimens. The cross-sectional area of the worn surfaces of the substrates and the wear volume of the antagonist abraders were measured...
2014: Dental Materials Journal
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