Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Inventories - Summary of Inventories (Details)

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Note 5 - Inventories - Summary of Inventories (Details) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Component parts and other materials $ 181,091 $ 57,652
Total inventories 2,245,958 3,379,209
Dental Segment [Member]    
Dental finished goods, net 1,855,538 2,846,272
Medical Segment [Member]    
Dental finished goods, net $ 209,329 $ 475,285