Evaluation of cure, properties and wear resistance of Artglass dental composite.
OBJECTIVE
(1) To evaluate the degree of conversion (DC) and the physical properties of a new dental composite, Artglass (Kulzer), designed primarily as a replacement material for porcelain in PFMs; and (2) to compare the efficacy of two different curing units for two dissimilar composites (Artglass and Charisma, Kulzer).


METHODS
Specimens (n = 10) were prepared by curing either in a continuous light exposure unit (Triad II, Dentsply) or in a high intensity strobe unit (Uni XS, Kulzer) for 180 s. Specimens were aged 24 hrs in water at 37 degrees C and tested for fracture toughness (FT-MPa m1/2; x-head = 0.13 mm/min), flexural modulus (E, GPa), flexural strength (FS, MPa; x-head = 0.5 mm/min), hardness (KHN, kg/mm2), and in vitro wear resistance (OHSU oral wear simulator). DC (%) was determined by transmission micro-FTIR. Results were compared by ANOVA/Turkey's test (P < or = 0.05).


RESULTS
DC, FT, E and FS were improved for Artglass and DC and E were improved for Charisma when the strobe curing unit was used, probably due to its increased intensity. Artglass showed a greater DC and FT but a lower E, KHN and wear resistance compared to Charisma when similar curing methods were used.
Freiberg
R S
RS
Department of Biomaterials and Biomechanics, Oregon Health Sciences University, Portland 97201, USA.
Ferracane
J L
JL
D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry; D003799:Dental Stress Analysis; D004548:Elasticity; D005899:Glass Ionomer Cements / Q000737:chemistry; D006244:Hardness; D008027:Light; D008422:Materials Testing; D010316:Particle Size; D018583:Pliability; D012823:Silicate Cement / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties
C084111:Charisma composite resin; D003188:Composite Resins; D005899:Glass Ionomer Cements; C111282:dental polyglass; D012823:Silicate Cement