Significant Customers (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Sales by product and by geographical region
Total sales	$ 2,129,241	$ 1,745,876	$ 6,377,574	$ 6,635,983
United States [Member]
Sales by product and by geographical region
Total sales	1,342,798	849,344	3,256,933	3,527,595
Canada [Member]
Sales by product and by geographical region
Total sales	133,605	163,171	470,451	468,786
Other Foreign [Member]
Sales by product and by geographical region
Total sales	652,838	733,361	2,650,189	2,639,602
Instruments [Member]
Sales by product and by geographical region
Total sales	368,036	416,582	1,495,772	2,381,115
Handpieces [Member]
Sales by product and by geographical region
Total sales	1,717,201	1,328,167	4,756,482	4,188,135
Other [Member]
Sales by product and by geographical region
Total sales	$ 44,004	$ 1,127	$ 125,320	$ 66,733