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Note D - Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]

Inventories, net consist of the following:

 

December 31, 2021

  

December 31, 2020

 
         

Dental finished goods, net

 $342,465  $1,888,141 

Medical finished goods, net

  1,119,709   200,327 

Component parts and other materials

  79,339   331,711 

Total inventories

 $1,541,513  $2,420,179