TITLE:
Effect of Disinfectants on Elastic Modulus, Flexural Strength and Color Stability of Denture Base Resins
AUTHORS:
Tobias Bensel, Jens J. Bock, Lisa Zumpe, Sonia Mansour, Nadine Blümel, Julia Seeliger, Arne F. Boeckler
KEYWORDS:
Cross Infection, Chemical Disinfectants, Denture Base Resins, Material Characteristics, Disinfection
JOURNAL NAME:
Open Journal of Stomatology,
Vol.8 No.4,
April
27,
2018
ABSTRACT: Objective: Infection control protocols dictate the disinfection of dentures. There
are no products available which are designed for the specific use of
disinfecting dentures. The objective of this study was to investigate the
impact of chemical disinfectants on elastic modulus, flexural strength and color
stability of denture base resins. Methods: 256 specimens from four
acrylic denture base resins were manufactured. Two cold-curing
denture base resins: PalaXpress (Heraeus Kulzer, Hanau, Germany), Futura Gen (Schuetz Dental,
Roßbach, Germany) and two heat-curing denture base resins: Paladon 65 (Heraeus
Kulzer, Hanau, Germany), FuturAcryl 2000 (Schuetz Dental,
Roßbach, Germany) were used. Three chemical disinfecting agents were tested:
Impresept, D050 Instru-Gen, Stammopur DR. Specimens were stored in distilled
water and in chemical disinfecting agents. They were divided randomly into groups. E-Modulus and
flexural strength were measured using the three-point
bending test. Color changes (ΔE) were determined
spectrophotometrically. Results: The disinfection
agents showed no significant influence on the E-modulus compared to distilled water
(Acrylic vs. distilled water from (Futura Gen) 2688.80 ± 230.78 vs. 2766.60 ±
91.22 MPa to (PalaXpress) 3004.20 ± 26.40 vs. 2851.00 ± 95.23 MPa). Flexural strength
after storage in distilled water and disinfection did not differ significantly
(Acrylic vs. distilled water from (Paladon65) 27.28 ± 1.30 vs. 28.42 ± 0.84
N/mm2, (p > 0.05) to (PalaXpress) 30.88 ± 0.25 vs. 29.68 ± 0.79 N/mm2, p Conclusions: The investigated disinfection agents did not
influence elastic modulus and flexural strength of denture base resins
negatively. ΔE-values were in a range of 1 to 2. Thus, the detected color changes may
be marginal. Clinical relevance: Single use disinfections are
feasible for acrylic dentures regarding to elastic modulus and flexural strength.