Note M - Segment and Geographic Data - Summary of Operations by Geographic Area (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Product sales, net	$ 10,304,711	$ 5,437,236
Dental Segment [Member]
Product sales, net	10,152,511	5,421,436
Medical Segment [Member]
Product sales, net	152,200	15,800
Domestic [Member]
Product sales, net	3,571,549	2,120,186
Domestic [Member] | Dental Segment [Member]
Product sales, net	3,535,049	2,118,186
Domestic [Member] | Medical Segment [Member]
Product sales, net	36,500	2,000
Rest of World [Member]
Product sales, net	4,635,034	3,239,650
Rest of World [Member] | Dental Segment [Member]
Product sales, net	4,519,334	3,225,850
Rest of World [Member] | Medical Segment [Member]
Product sales, net	115,700	13,800
CHINA
Product sales, net	2,098,128	77,400
CHINA | Dental Segment [Member]
Product sales, net	2,098,128	77,400
CHINA | Medical Segment [Member]
Product sales, net	$ 0	$ 0