IADR Abstract Archives

Gloss Retention of CAD/CAM and Conventional Materials After Chemical/Mechanical Degradation

Objectives: Three-dimensional (3D) printed composite resins have recently become a topic of interest for permanent restoration in clinical settings with its advantage in terms of production efficiency and cost-effectiveness. However, the evidence of their surface gloss retention after exposure to chemical and mechanical degradation in the oral environment is still missing. Thus, this study aims to evaluate the surface gloss of 3D-printed composite resin, CAD/CAM materials and light-curing composite resins for direct restoration after the in vitro degradation simulation by chemical and mechanical methods.
Methods: 416 specimens were prepared from 4 different 3D-printed composite resins (Brilliant-Print-Experimental, Crowntec and VarseoSmile-Crown-Plus, Temp-PRINT), 6 subtractive CAD/CAM materials (Tetric-CAD, Katana-Avencia, Vita-Enamic, Telio-CAD, IPS-e.max-CAD, Initial-Lisi-Block) and 3 light-curing composites for direct restoration (Tetric-EvoCeram, Clearfill-Majesty-ES-2-Classic and G-ænial-Universal-Injectable) and polished with abrasive paper (600,1200,2400,4000). The samples were then measured for gloss value (Novo-Curve) with 3 points per 1 sample, at the same point, each time turning 120 degrees. Four surface treatments including water, 75% Alcohol, Acid (Elmex-Gelée) and Mechanical Brushing were applied to the specimens for an hour. They were then measured for gloss value and the ΔGU data were statistically analyzed between each surface treatment group and then between each material group (Independent-Samples Kruskal-Wallis One-way ANOVA Test).
Results: Initial result demonstrates that the e.max-CAD, Initial-Lisi-Block and Tetric-CAD from acid aging and Telio-CAD from brushing group show ΔGU above 17.6 (gloss value difference detectable by at least 50% of observers). The rest of experiment groups present ΔGU value below 17.6. Statistical tests show significant differences between initial and final gloss value for all materials and aging groups.
Conclusions: The investigated commercially-available 3D-printed composite resins may present acceptable gloss retention after in vitro chemical and mechanical degradation. Their gloss retention property are similar to CAD/CAM materials and light-curing composite resins for direct restoration.

2024 Continental European and Scandinavian Divisions Meeting (Geneva, Switzerland)
Geneva, Switzerland
2024
0029
Dental Materials 7: Color and Appearance (Esthetics)
  • Daher, René  ( University of Geneva , Geneva , Switzerland )
  • Yantarasri, Prathanporn  ( University of Geneva , Geneva , Switzerland )
  • Krejci, Ivo  ( University of Geneva , Geneva , Switzerland )
  • Leprince, Julian  ( University of Geneva , Geneva , Switzerland )
  • Ardu, Stefano  ( University of Geneva , Geneva , Switzerland )
  • Lee, Jae-hyun  ( Seoul National University School of Dentistry , Seoul , Korea (the Republic of) )
  • Swiss Government Excellence Scholarship
    Swiss Government Excellence Scholarship
    Poster Session
    Poster Session 1.4
    Thursday, 09/12/2024 , 08:00AM - 06:00PM
    Study Materials
    MaterialCommercial NameCompositionLot Number
    3D-printed
    composite
    resin
    BEGO;
    VarseoSmile
    Crown plus
    (3D-VB)
    30–50 % Silanized dental glass (particle size 0.7
    μm), 4′-isopropylidiphenol, ethoxylated and 2
    methylprop-2enoic acid, methyl benzoylfor- mate,
    diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide
    600317
    3D-printed
    composite
    resin
    Saremco;
    Crowntec
    (3D-CS)
    50 –<70% BisEMA,
    0.1 –<1% trimethylbenzoyldiphenylphosphine
    oxide
    E741
    Temporary
    3D-printed
    composite
    resin
    GC Temp Print; GC
    (3D-TP)
    UDMA 50–<75%, 2,2′-ethylenedioxydiethyl
    dimethacrylate 10%<25%, inorganic silica fillers
    20% wt
    2103191
    Experimental
    3D-printed
    composite
    resin
    Brilliant Print
    Experimental;
    Coltene
    (3D-EXP)
    Undisclosed Experimental
    1
    Milled
    Composite
    resin
    Tetric CAD -
    Ivoclar Vivadent
    (CC-TC)
    71.1 % barium glass, silicon dioxide , 28.4 % Bis
    GMA, Bis-EMA, TEGDMA, UDMA
    Z03T89
    Milled
    Composite
    resin
    ATANA Avencia - Kuraray Dental
    (CC-KA)
    62% silica, alumina filler, 38% UDMA, TEGDMA 000488
    Milled
    polymer-
    infiltrated
    Ceramic
    VITA Enamic
    (CC-VE)
    86% ceramic Silicon dioxide, Aluminum oxide,
    Sodium oxide,
    Potassium oxide, Boron trioxide, Zirconia, Calcium
    oxide, 14% UDMA+TEGDMA
    94890
    Milled
    PMMA
    Telio CAD -
    Ivoclar Vivadent
    (CC-PM)
    99.5% PMMA Z03DXV
    Conventional
    Composite
    resin
    Tetric EvoCeram -
    Ivoclar Vivadent
    (CR-TE)
    75%-76% Barium Glass, mixed oxide, filler, YbF3,
    prepolymers, 24%-25% Bis-GMA, UDMA, Ethoxylated Bis-EMA
    Z03D9S
    Conventional
    Composite
    resin
    Clearfil Majesty
    ES-2 Classic -
    Kuraray Dental
    (CR-CM)
    78% Silanated barium glass, 22% Bis-GMA,
    dimethacrylate
    CG0217
    Flowable
    Composite
    resin
    G-ænial Universal
    Injectable – GC
    (CR-INJ)
    69% Silicon Dioxide, Strontium glass, 31% UDMA, Bis-MEPP, TEGDMA211015A
    Milled
    Lithium
    Disilicate
    IPS e.max CAD - Ivoclar Vivadent
    (CC-EM)
    57-80% Silicon dioxide, 11-19% Lithium oxide, 0-13% Potassium oxide, 0-11% Phosphorus pentoxide, 0-8% Zirconium oxide, 0-8% Zinc oxide, 0-5% Aluminum oxide, 0-5% Magnesium oxide, 0-8% Coloring oxidesZ0366T
    Milled
    Lithium
    Disilicate
    Initial LiSi Block –
    GC (CC-IL)
    Silicon dioxide, Phosphorus oxide, Potassium oxide, Aluminum oxides, Titanium oxide and Cerium oxide 0.6% 2112131