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Note 4 - Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30, 2023

  

December 31, 2022

 
         

Dental finished goods

 $2,090,638  $1,315,263 

Medical finished goods, net

  225,642   334,124 

Component parts and other materials

  166,350   142,948 

Total inventories

 $2,482,630  $1,792,335