Oak Hill Capital, a private equity firm, agreed to invest in RiverGlade Capital-backed US Oral Surgery Management, a provider of healthcare management services. Financial terms were not disclosed. "The Oak Hill team demonstrated a keen understanding of the oral surgery market and quickly became our partner of choice for this transaction. Oak Hill shares our desire to continue to invest in the USOSM platform and to build on the Company's leading position as the specialty service organization of choice for the country's top oral surgeons," Rick Hall, USOSM CEO.