Steven J. Semmelmayer

American Dental Partners, Inc. provides business services to multi-disciplinary dental group practices. It also offers dental facilities and support staff to the affiliated practices and provides or assists with organizational planning and development, staff recruitment, employee retention, training programs, quality assurance initiatives, facilities development, employee benefits administration, procurement, information systems, technology, marketing, payor contracting, financial planning, reporting and analysis. The company was founded by Gregory A. Serrao in 1995 and is headquartered in Wakefield, MA.

Sybron Dental Specialties, Inc. manufactures and markets dental and medical products. It provides twisted files, nickel titanium (NiTi) files, single patient kits for root canal, custom cabinet and drawer organizers, and custom wall charts. The firm offers implants, endodontic, restorative dentistry, and orthodontic markets. The company was founded in 1993 and is headquartered in Orange, CA.

Kerr Corp. develops, manufactures, markets, and distributes dental products. Its brands are encompassed within the Kerr Restoratives, Kerr Endodontics, Kerr Rotary and Kerr TotalCare platforms. The company is headquartered in Orange, CA.

Novalar Pharmaceuticals, Inc. develops and manufactures pharmaceutical products. It focuses on dental products. The company's OraVerse product (phentolamine mesylate) reverses the effects of local anesthetic with a vasoconstrictor and accelerates the return of normal sensation and function. The company was founded in 2000 and is headquartered in San Diego, CA.

LED Medical Diagnostics, Inc. develops and markets medical screening devices. It provides detection of mucosal tissue abnormalities including malignant and pre malignant lesions to facilitate timely diagnosis and treatment based on a proprietary fluorescence visualization technology. The company was founded by Peter Whitehead in 2003 and is headquartered in Burnaby, Canada.

C3 Jian, Inc. operates as a biotechnological research and development company. It provides development and commercialization of pathogen-specific and antimicrobials that treat and prevent diseases caused by microbial dysbiosis. The company is headquartered in Marina del Rey, CA.

Discus Dental LLC develops, manufactures and distributes dental products such as tooth whitening, oral hygiene, preventatives, and restoratives. The company was co-founded by William Dorfman and Robert Hayman on December 7, 1990 and is headquartered in Culver City, CA.

Den-Mat Holdings LLC manufactures and markets dental products. The firm offers three main product categories: Consumables, Small Equipment, and a full-service Dental Laboratory. Its consumables include the brands known and trusted: Geristore, Core Paste, Tenure®, Ultra-Bond, Infinity, Splash, Precision, Perfectemp, Atridox and LumiBrite. The company was founded by Robert Ibsen in 1974 and is headquartered in Lompoc, CA.^ ^