Oak Hill Capital has announced it will invest in U.S. Oral Surgery Management (USOSM).

USOSM, based in Irving, Texas, is a shared services organization that partners with oral surgeons. The company, founded in 2017, states it has partnered with more than 140 surgeons across 18 states.

Oak Hill Capital Partners, based in Stamford, Conn., seeks to invest in middle market companies. Founded in 1986, the firm typically makes more substantial investments in a number of sectors, including healthcare.

USOSM is currently a portfolio company of RiverGlade Capital. Based in Chicago, RiverGlade makes control and select minority equity investments in lower middle market healthcare companies. Founded in 2017, the firm prefers to make more substantial investments from a dollars perspective.

Terms of the transaction were not disclosed.