Welcome to Oral & Maxillofacial Surgery Associates (OSA) and thank you for visiting our website!  Our practice is owned by Drs. Mark Zajkowski, Killian MacCarthy,and Matthew Jacobsen. Since our opening in 1980 by Dr. Lewis Estabrooks, our practice has been the “go to” group in Southern Maine, consistently ranking as the top OMS practice by patients, fellow dentists and physicians.  

As a full-scope OMS practice, we treat patients for a wide range of conditions in both office and hospital settings.  These include dentoalveolar surgery (including wisdom teeth), dental and maxillofacial implants, pediatric oral surgery, orthognathic and reconstructive surgery, maxillofacial tumors, cleft lip and palate, major and minor bone grafting, snoring and sleep apnea, temporomandibular joint problems, and maxillofacial trauma. 

Our mission is to offer care that is unquestionably safe and comfortable within a modern, state of the art facility.  This mission, in addition to our core values below, truly set us apart from other practices:

  1.       Safe and compassionate care in a modern, state of the art facility.
  2.       Caring for our entire community, not just those who are fortunate.
  3.       Continually being available, affordable, and affable for our patients.
  4.       Philanthropy and leadership in our community

Consistent with our core mission and values, Oral and Maxillofacial Surgery Associates became the first and only OMS office in New England to become accredited by the Joint Commission as an office-based surgery facility in 2006.  This rigorous process was completely voluntary and encompassed a complete review of the practice, including practice administration and governance, patient safety, infection control, environment of care, patient rights and responsibilities, and more. Our facility is randomly inspected no less than every three years to confirm that the highest quality of standards are met, similar to mandatory hospital accreditation.  We believe that certification by the Joint Commission elevates the safety of our care, and centers our practice on the needs of our patients.  Since the initial certification, we have been recertified twice by the Joint Commission, and actively maintain continuous compliance with its standards.  In recognition of our dedication to quality and safety with our certification, our practice received the Maine Medical Center Physician-Hospital Organization Specialty Care Award in 2006.  No other OMS practice in Maine has ever received this high honor.

Since the inception of the practice, our doctors currently serve or have served as leaders in organized medicine and dentistry at the local, state, and national levels.  Each of our doctors is a graduate of both dental and medical school, is board certified by the American Board of Oral and Maxillofacial Surgery, and is certified by the State of Maine to provide surgical and anesthesia services.  In 2013, each doctor became a Fellow of the American College of Surgeons (FACS).  This prestigious organization focuses on improving the quality of care for the surgical patient by setting high standards for surgical education, practice, safety and ethics.  Our doctors are the only oral and maxillofacial surgeons in Maine to meet the rigorous standards to qualify for fellowship in this organization.

Our surgical team is just as impressive as our doctors, consisting of highly trained and educated assistants, ranging from surgical technicians to registered nurses, all of whom are registered and/or licensed in Maine for your care as well as your radiography.   Our entire assisting team is BLS (basic life support), ACLS (advanced cardiac life support), PALS (pediatric advanced life support) certified.  Additional certification for our assistants by the American Association of Oral and Maxillofacial Surgeons DAANCE program is also maintained. 

As you can see, OSA is committed to offering superior care in all aspects, and we are thrilled to welcome you to our practice.  Please feel free to browse the remainder of our site to learn more about us.