Note K - Segment and Geographic Data - Summary of Operations by Geographic Area (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Product sales, net	$ 8,629,928	$ 9,827,444
Dental Segment [Member]
Product sales, net	8,527,108	9,761,444
Medical Segment [Member]
Product sales, net	102,820	66,000
Domestic [Member]
Product sales, net	5,200,849	5,361,880
Domestic [Member] | Instruments [Member]
Product sales, net	810,885	1,003,697
Domestic [Member] | Handpieces [Member]
Product sales, net	4,340,852	4,282,898
Domestic [Member] | Accessories [Member]
Product sales, net	49,112	75,285
Domestic [Member] | Dental Segment [Member]
Product sales, net	5,140,949	5,348,880
Domestic [Member] | Dental Segment [Member] | Instruments [Member]
Product sales, net	806,885	1,002,697
Domestic [Member] | Dental Segment [Member] | Handpieces [Member]
Product sales, net	4,284,952	4,270,898
Domestic [Member] | Dental Segment [Member] | Accessories [Member]
Product sales, net	49,112	75,285
Domestic [Member] | Medical Segment [Member]
Product sales, net	59,900	13,000
Domestic [Member] | Medical Segment [Member] | Instruments [Member]
Product sales, net	4,000	1,000
Domestic [Member] | Medical Segment [Member] | Handpieces [Member]
Product sales, net	55,900	12,000
Domestic [Member] | Medical Segment [Member] | Accessories [Member]
Product sales, net	0
Rest of World [Member]
Product sales, net	3,429,079	4,195,564
Rest of World [Member] | Instruments [Member]
Product sales, net	907,169	1,276,354
Rest of World [Member] | Handpieces [Member]
Product sales, net	2,480,908	2,873,734
Rest of World [Member] | Accessories [Member]
Product sales, net	41,002	45,476
Rest of World [Member] | Dental Segment [Member]
Product sales, net	3,386,159	4,142,564
Rest of World [Member] | Dental Segment [Member] | Instruments [Member]
Product sales, net	868,169	1,251,354
Rest of World [Member] | Dental Segment [Member] | Handpieces [Member]
Product sales, net	2,476,988	2,845,734
Rest of World [Member] | Dental Segment [Member] | Accessories [Member]
Product sales, net	41,002	45,476
Rest of World [Member] | Medical Segment [Member]
Product sales, net	42,920	53,000
Rest of World [Member] | Medical Segment [Member] | Instruments [Member]
Product sales, net	39,000	25,000
Rest of World [Member] | Medical Segment [Member] | Handpieces [Member]
Product sales, net	3,920	28,000
Rest of World [Member] | Medical Segment [Member] | Accessories [Member]
Product sales, net
CHINA
Product sales, net	0	270,000
CHINA | Instruments [Member]
Product sales, net	0	270,000
CHINA | Handpieces [Member]
Product sales, net	0	0
CHINA | Accessories [Member]
Product sales, net	0	0
CHINA | Dental Segment [Member]
Product sales, net	0	270,000
CHINA | Dental Segment [Member] | Instruments [Member]
Product sales, net	0	270,000
CHINA | Dental Segment [Member] | Handpieces [Member]
Product sales, net	0	0
CHINA | Dental Segment [Member] | Accessories [Member]
Product sales, net	0	0
CHINA | Medical Segment [Member]
Product sales, net	0	0
CHINA | Medical Segment [Member] | Instruments [Member]
Product sales, net	0	0
CHINA | Medical Segment [Member] | Handpieces [Member]
Product sales, net	0	0
CHINA | Medical Segment [Member] | Accessories [Member]
Product sales, net	$ 0	$ 0