Novel Bulk-fill Flowable with Excellent Mechanical and Wear Properties

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Objective: To compare the curing stress, compressive strength (CS), diametral tensile strength (DTS), and wear properties of a 3M experimental Bulk-fill low-stress flowable with some other commercially available Bulk-fill flowable materials. �

Methods: Materials used were an experimental Bulk-fill flowable material from 3M ESPE, Filtek� Supreme Ultra Flowable (3M ESPE), Grandio^� SO Heavy Flow (Voco), SureFil

The properties measured are summarized in the following table, with p values vs. the experimental flowable included.

Materials	Compressive Strength �(MPa)		Diametral tensile Strength (MPa)		Wear (�m)
Experimental 3M flowable	349.9(8.8)		70.3(10.3)		14.7(0.55)
SureFil SDR flow	222.9(5.3)	P = 0.00	48.7(5.7)	p = 0.01	24.6(0.66)	p = 0.00
Venus Bulk Fill	317.7(16.1)	p = 0.00	59.3(7.5)	p = 0.09	21.7(1.00)	p = 0.00

Conclusion: ��The new 3M experimental bulk-fill flowable material had similar stress level during cure when compared with current low stress flowables on the market.� It showed statistically higher compressive strength and better wear properties compared with SureFil SDR flow and Venus Bulk Fill.� Its diametral tensile strength was also statistically higher than SDR flow.