Significant Customers (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Sales by product and by geographical region
Total sales	$ 2,620,834	$ 2,489,542
United States
Sales by product and by geographical region
Total sales	1,213,643	1,300,500
Canada
Sales by product and by geographical region
Total sales	24,736	55,602
Other Foreign
Sales by product and by geographical region
Total sales	1,382,455	1,133,440
Instruments
Sales by product and by geographical region
Total sales	840,981	517,450
Handpieces
Sales by product and by geographical region
Total sales	1,733,217	1,925,663
Other
Sales by product and by geographical region
Total sales	$ 46,636	$ 46,429