Note M - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Product sales, net	$ 5,437,236	$ 8,374,501
Operating Income (Loss)	(7,453,118)	(3,998,993)
Depreciation and Amortization	95,949	100,508
Income (loss) before taxes and equity in earnings of affiliates	(7,471,199)	(7,643,438)
Total assets	19,571,450	6,556,289
Corporate, Non-Segment [Member]
Operating Income (Loss)	(4,932,062)	(4,424,620)
Depreciation and Amortization	80,360	76,323
Income (loss) before taxes and equity in earnings of affiliates	(4,936,116)	(8,064,603)
Total assets	12,612,147	957,238
Dental Segment [Member]
Product sales, net	5,421,436	8,336,901
Dental Segment [Member] | Operating Segments [Member]
Product sales, net	5,421,436	8,336,901
Operating Income (Loss)	817,355	2,775,730
Depreciation and Amortization	9,896	15,793
Income (loss) before taxes and equity in earnings of affiliates	807,770	2,774,359
Total assets	6,035,645	5,008,324
Medical Segment [Member]
Product sales, net	15,800	37,600
Medical Segment [Member] | Operating Segments [Member]
Product sales, net	15,800	37,600
Operating Income (Loss)	(3,338,411)	(2,350,103)
Depreciation and Amortization	5,693	8,392
Income (loss) before taxes and equity in earnings of affiliates	(3,342,853)	(2,353,194)
Total assets	$ 923,658	$ 590,727