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Significant Customers & Geographical Information (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Sales by product and by geographical region        
Total sales $ 2,278,235 $ 2,326,976 $ 4,767,778 $ 4,248,334
United States
       
Sales by product and by geographical region        
Total sales 1,080,451 1,043,646 2,380,952 1,914,136
Canada
       
Sales by product and by geographical region        
Total sales 66,741 193,336 122,343 336,846
Other Foreign
       
Sales by product and by geographical region        
Total sales 1,131,043 1,089,994 2,264,483 1,997,352
Instruments
       
Sales by product and by geographical region        
Total sales 751,451 559,167 1,268,901 1,127,737
Handpieces
       
Sales by product and by geographical region        
Total sales 1,475,696 1,729,302 3,401,359 3,039,282
Other
       
Sales by product and by geographical region        
Total sales $ 51,088 $ 38,507 $ 97,518 $ 81,315