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Note 4 - Inventories - Summary of Inventories (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Component parts and other materials	$ 97,845	$ 72,824
Total inventories	3,897,017	3,713,215
Dental Segment [Member]
Finished goods, net	3,677,357	3,640,391
Medical Segment [Member]
Finished goods, net	$ 121,815	$ 0

X

- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance.

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