Impact fracture resistance of a new resin nanoceramic CAD/CAM material

Rusin, Richard P.; Rolf, Jacqueline C.; Boehmer, R.; Christen, W.E.; Russell, V.A.; Norman, Courtney

doi:10.1016/j.dental.2012.07.086

Cited by 3 publications

(5 citation statements)

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“…The resin nanoceramic composite blocks, Lava Ultimate for CAD/CAM, combine the high temperature/high pressure dual polymerization of its resinous content, and the nanotechnology used to produce clusters of nanofiller particles. As a vastly polymerized and highly crosslinked polymer, Lava Ultimate material displayed superior flexural strength, low hardness when compared with other CAD/CAM materials, and two‐body wear value comparable to that of tooth enamel . The nanosize filler particles of LU may be considered a main reason behind its low surface roughness .…”

Section: Discussionmentioning

confidence: 99%

“…The lately introduced chairside CAD/CAM resin nanoceramic (Lava Ultimate, LU) was found to perform successfully . In previous studies, LU displayed statistically higher impact fracture resistance and superior flexural strength than lithium disilicate, feldspathic glass‐ceramics, and other CAD/CAM materials . LU revealed high fracture toughness, low hardness, and low modulus when compared to feldspathic glass‐ceramics .…”

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confidence: 85%

“…13 In previous studies, LU displayed statistically higher impact fracture resistance and superior flexural strength than lithium disilicate, feldspathic glass-ceramics, and other CAD/CAM materials. [14][15][16][17] LU revealed high fracture toughness, low hardness, and low modulus when compared to feldspathic glassceramics. 18 The two-body wear of LU did not differ significantly from that of human enamel and was similar to other CAD/CAM materials.…”

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confidence: 99%

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Effect of Aging Regimens on Resin Nanoceramic Chairside CAD/CAM Material

Ayad

ArRejaie

Bahgat

et al. 2015

Journal of Prosthodontics

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Section: Discussionmentioning

confidence: 99%

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confidence: 85%

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confidence: 99%

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Effect of Aging Regimens on Resin Nanoceramic Chairside CAD/CAM Material

Ayad

ArRejaie

Bahgat

et al. 2015

Journal of Prosthodontics

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“…24,25 Ultrastructure, physical, and mechanical properties of available CAD/CAM materials vary widely, and, accordingly, their mechanical behavior in the toothrestoration complex is expected to vary as well. 26,27 With the intent of increasing the amount of information about the biomechanical behavior of these materials when used for endocrowns, the present study evaluated the microleakage, fracture resistance, and failure modes of three types of CAD/ CAM fabricated restorations when they were submitted to an oblique compressive force.…”

Section: Introductionmentioning

confidence: 99%

Fracture Resistance and Microleakage of Endocrowns Utilizing Three CAD-CAM Blocks

El-Damanhoury¹,

Haj-Ali²,

Platt³

2015

Operative Dentistry

174

169

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Fracture resistance and mode of failure of CAD/CAM-fabricated monoblock endocrowns varies widely between materials. Clinicians should be cautious with material selection for endocrown restorations. SUMMARYThis study assessed marginal leakage and fracture resistance of computer-aided design/ computer-aided manufacturing (CAD/CAM) fabricated ceramic crowns with intracoronal extensions into the pulp chambers of endodontically treated teeth (endocrowns) using either feldspathic porcelain (CEREC Blocks [CB], Sirona Dental Systems GmbH, Bensheim, Germany), lithium disilicate (e.max [EX], Ivoclar Vivadent, Schaan, Liechtenstein), or resin nanoceramic (Lava Ultimate [LU], 3M ESPE, St Paul, MN, USA).). Thirty extracted human permanent maxillary molars were endodontically treated. Standardized preparations were done with 2-mm intracoronal extensions of the endocrowns into the pulp chamber. Teeth were divided into three groups (n=10); each group was restored with standardized CAD/CAM fabricated endocrowns using one of the three tested materials. After cementation with resin cement, specimens were stored in distilled water at 378C for one week, subjected to thermocycling, and immersed in a 5% methylene-blue dye solution for 24 hours. A compressive load was applied at 35 degrees to long axis of the teeth using a universal testing machine until failure. Failure load was recorded, and specimens were examined under a stereomicroscope for modes of failure and microleakage. Results were analyzed using one-way analysis of variance and Bonferroni post hoc multiple comparison tests (a=0.05). LU showed significantly (p,0.05) higher fracture resistance and more favorable fracture mode (ie, fracture of the endocrown without fracture of tooth) as well as higher dye penetration than CB and EX. In conclusion, although using resin

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“…Mit dem dentinähnlichen E-Modul liegt die initiale Biegefestigkeit bei >200 MPa. Die Abrasion ist schmelzähnlich 19 . Eine keramikseitige Ätzung mit Flusssäure ist nicht erforderlich.…”

Section: Materialkenndaten Und Indikationenunclassified

Biomechanische Merkmale im Fokus Hybrid- und Verbundwerkstoffe mit schmelzähnlichen Eigenschaften

Kern¹

2015

ZWR - Das Deutsche Zahnärzteblatt

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Zahnmedizinische Restaurationswerkstoffe haben ein umfangreiches Anforderungsprofil zu erf?llen: Abriebfestigkeit, mechanische Festigkeit auf Druck, chemische Resistenz, Oberfl?chendichte, optimale Farb- und Lichtwirkung, Biokompatibilit?t, Langzeitbest?ndigkeit, einfache Herstellung und Verarbeitung zu vertretbaren Kosten. Auf einen Nenner gebracht, muss das Material mechanisch stabil, ?sthetisch anspruchsvoll, korrosionsresistent, biologisch vertr?glich und wirtschaftlich sein 1.

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Impact fracture resistance of a new resin nanoceramic CAD/CAM material

Cited by 3 publications

References 0 publications

Effect of Aging Regimens on Resin Nanoceramic Chairside CAD/CAM Material

Effect of Aging Regimens on Resin Nanoceramic Chairside CAD/CAM Material

Fracture Resistance and Microleakage of Endocrowns Utilizing Three CAD-CAM Blocks

Biomechanische Merkmale im Fokus Hybrid- und Verbundwerkstoffe mit schmelzähnlichen Eigenschaften

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