Abstract Archives

IADR Abstract Archives

Correlation of Surface Hardness, Wear and Stiffness of Direct Composites

Objectives: Surface hardness (Vickers, HV) is regarded as an important property of composites. For a group of 29 direct composites (sculptable universals and bulk fills), HV has been measured and correlated to E-Modulus and 3-body wear (3BW, ACTA).
Methods: HV (0,2;15) was measured with a M-400-G2 Hardness Tester (LECO, Germany) after P4000 wet sandpaper polishing and 7 days water aging at 36C. 3BW (ACTA method) was performed according to ISO/TS14569-2 (200,000 cycles) relative to FiltekTM Z250 (3M Oral Care). E-Modulus was taken from ISO 4049 flexural strength measurement (Instron). All specimens were cured according to manufacturers’ instructions.
Results: ANOVA analysis (Tukey) showed that at p<0.05, Vickers hardness of sculptable composites can be very different, letters in parentheses in the table indicates which samples are statistically different within the same column.

In general, a higher HV was observed for higher E-Modulus (linear; R squared 0,85) and lower 3BW (quadratic R squared 0,63). Outliers were found for OrmocersTM (AdmiraTM Fusion – higher wear and lower E-Modulus) and s-PRG filled Beautifil-Bulk (higher wear).
Conclusions: For most composites tested, HV correlates with E-Modulus and 3BW. Exceptions are found for special chemistries like OrmocerTM resins or s-PRG fillers. FiltekTM Supreme Ultra and FiltekTM One had 3BW that was much lower than what is predicted from their HV by correlation, likely to their use of nanocluster and nanoparticle filler.
Division: AADR/CADR Annual Meeting
Meeting: 2018 AADR/CADR Annual Meeting (Fort Lauderdale, Florida)
Location: Fort Lauderdale, Florida
Year: 2018
Final Presentation ID: 0673
Abstract Category|Abstract Category(s): Dental Materials 2:Polymer-based Materials
Authors
  • Dede, Karsten  ( 3M Deutschland GmbH , Seefeld , Bavaria , Germany )
  • Dunbar, Timothy  ( 3M ESPE , Maplewood , Minnesota , United States )
  • Craig, Bradley  ( 3M ESPE , Maplewood , Minnesota , United States )
  • Thalacker, Christoph  ( 3M Deutschland GmbH , Seefeld , Bavaria , Germany )
  • Homnick, Paul  ( 3M ESPE , Maplewood , Minnesota , United States )
  • Kittelson, Jeff  ( 3M ESPE , Maplewood , Minnesota , United States )
  • Madden, Jean  ( 3M ESPE , Maplewood , Minnesota , United States )
    • Financial Interest Disclosure: All authors are employees of 3M
    SESSION INFORMATION
    Poster Session
    Dental Materials: Polymer-based Materials II
    Thursday, 03/22/2018 , 03:45PM - 05:00PM
    TABLES
    Results:
    MaterialManufacturerHV (0,2;15)3BW (ACTA; * Filtek(TM) Z250)E-Modulus (GPa)
    Gradia(TM) Direct XGC30 ±1 (P)2,43 ± 0,10 (OP)6,5 ±0,9 (M)
    Essentia(TM)GC33 ±2 (P)2,02 ±0,20 (MN)6,8 ±0,4 (LM)
    Tetric EvoCeram(TM)Ivoclar39 ±2 (O)1,43 ±0,05 (HIJK)8,4 ±0,4 (JK)
    Brilliant EverGlow(TM)Coltene44 ±2 (N)1,17 ±0,03 (FGH)7,4 ±0,3 (KLM)
    Tetric EvoCeram(TM) Bulk FillIvoclar44 ±2 (N)1,63 ±0,05 (KL)9,3 ±0,3 (IJ)
    Estelite(TM) Sigma QuickTokuyama47 ±2 (N)0,86 ±0,04 (CDE)7,1 ±0,4 (LM)
    Herculite(TM) Ultra(TM)Kerr49 ±1 (M)1,27 ±0,03 (GHIJ)9,3 ±0,6 (IJ)
    Harmonize(TM)Kerr50 ±1 (LM)1,23 ±0,12 (GHI)9,7 ±0,5 (HI)
    Ceram.X(TM) UniversalDentsply55 ±1 (KL)1,28 ±0,11 (GHIJ)9,6 ±0,2 (HI)
    Filtek(TM) One3M56 ±1 (JK)0,89 ±0,05 (DE)11,3 ±0,3 (EF)
    TPH Spectra(TM) LVDentsply58 ±2 (IJK)1,48 ±0,01 (IJK)9,6 ±0,2 (HI)
    SonicFill(TM) 2Kerr59 ±2 (IJK)0,90 ±0,04 (CDEF)10,2 ±0,5 (GHI)
    Filtek(TM) Bulk Fill Posterior3M59 ±2 (IJK)0,81 ±0,06 (CDE)10,6 ±0,5 (FGH)
    Ecosite Bulk FillDMG59 ±2 (IJ)1,36 ±0,17 (HIJK)10,1 ±0,3 (GHI)
    Venus(TM) DiamondKulzer60 ±2 (IJ)0,99 ±0,02 (DEFG)11,7 ±1,3 (DE)
    Beautifil-BulkShofu61 ±3 (I)3,66 ±0,11 (Q)10,9 ±0,1 (EFG)
    TPH Spectra(TM) HVDentsply62 ±2 (I)1,57 ±0,04 (JKL)10,1 ±0,5 (GHI)
    SureFil(TM) High Density PosteriorDentsply68 ±3 (H)0,73 ±0,04 (BCDE)11,4 ±0,6 (EF)
    SonicFill(TM)Kerr73 ±1 (G)1,22 ±0,09 (GHI)12,0 ±0,8 (DE)
    Filtek(TM) Supreme Ultra3M74 ±3 (G)0,38 ±0,02 (A)11,7 ±0,2 (DE)
    QuiXX(TM)Dentsply75 ±3 (FG)1,36 ±0,04 (HIJK)17,8 ±0,3 (A)
    Filtek(TM) Z2503M78 ±3 (F)1,00 ±0,03 (EFG)12,7 ±0,5 (CD)
    Paradigm(TM) Nanohybrid3M85 ±3 (E)0,47 ±0,01 (AB)13,3 ±0,3 (C)
    x-tra fil(TM)Voco91 ±5 (D)0,69 ±0,01 (BCD)17,2 ±0,2 (AB)
    Admira(TM) FusionVoco94 ±7 (D)2,65 ±0,07 (P)8,4 ±0,2 (JK)
    Admira(TM) Fusion x-traVoco101 ±4 (C)2,31 ±0,09 (NO)7,7 ±0,2 (KL)
    Filtek(TM) Z1003M107 ±5 (B)0,61 ±0,02 (ABC)16,3 ±0,3 (B)
    Grandio(TM)SOVoco109 ±3 (B)0,78 ±0,01 (BCDE)17,0 ±0,2 (AB)
    Grandio(TM)Voco120 ±4 (A)0,70 ±0,06 (BCDE)17,5 ±0,4 (A)