In Vitro Biofilm Formation on Aryl Ketone Polymer (AKP), A New Denture Material, Compared with That on Three Traditional Dental Denture Materials

Table 1

Attachment and biofilm growth of Candida albicans and Streptococcus spp. on selected dental materials.

	Test material	CFUs/coupon (mean ± SD)	% reduction^∗	CFUs/coupon (mean ± SD)	% reduction^∗
		Candida albicans		Streptococcus mutans
6-hour static attachment	CoCr	2.4 ± 0.21 × 10^4	0	3.2 ± 4.00 × 10^5	0
	Ultaire® AKP	3.7 ± 0.33 × 10^3	85	7.2 ± 4.70 × 10^4	77
	PMMA	7.9 ± 0.65 × 10^3	68	5.0 ± 1.30 × 10^4	84
		Candida albicans		Streptococcus spp.
24-hour dynamic biofilm growth	CoCr	4.3 ± 1.50 × 10^6	0	3.0 ± 0.68 × 10^5	75
	Ultaire® AKP	2.2 ± 0.50 × 10^6	48	4.6 ± 0.95 × 10^5	62
	PMMA	1.8 ± 0.63 × 10^6	58	4.4 ± 0.90 × 10^5	63
	POM	2.4 ± 1.20 × 10^6	43	1.2 ± 2.20 × 10^6	0

The procedures for the 6-hour attachment and 24-hour biofilm formation were as described in “Materials and Methods.” Values represent viable colony-forming units (CFU) of C. albicans and Streptococcus spp. on test material coupons. % reduction = 100 × (CFU_{CoCr or POM}-CFU_{test coupon})/CFU_{CoCr or POM}. The viable bacterial CFUs (attachment or growth) of each test material was compared to each other material separately. For the reductions identified as statistically significant (), the referent material is the one with the highest bacterial attachment or biofilm growth (“0” reduction).