Dr. John O. Butler was a dentist

Dentist

A dentist, also known as a 'dental surgeon', is a doctor that specializes in the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity. The dentist's supporting team aides in providing oral health services...

 and periodontist in Chicago, Illinois, and founder of the John O. Butler Company, manufacturer of toothbrush

Toothbrush

The toothbrush is an oral hygiene instrument used to clean the teeth and gums that consists of a head of tightly clustered bristles mounted on a handle, which facilitates the cleansing of hard-to-reach areas of the mouth. Toothpaste, which often contains fluoride, is commonly used in conjunction...

es, dental floss

Dental floss

Dental floss is made of either a bundle of thin nylon filaments or a plastic ribbon used to remove food and dental plaque from teeth. The floss is gently inserted between the teeth and scraped along the teeth sides, especially close to the gums. Dental floss may be flavored or unflavored, and...

, and sundry oral-care products under the Butler and GUM brand names. The company was purchased in 1988 by Sunstar, Inc., a major Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese manufacturer of personal care products, and in 2006 the John O. Butler Company adopted the name of its parent company, although the brand names Butler and GUM are still in use.