Welcome to Our Practice

Dentist St. Johns, MI - Christine M. Mason, MS, DDS & Ona Erdt, DMD

Christine M. Mason DDS has been working with patients in the St. Johns area for over twenty-five years providing excellent dental care. Dr. Mason expertise in dentistry coupled with genuine concern for his patients results in a very caring and exceptional patient experience.  Our talented dental team is dedicated to providing comfortable and prompt care. Our goal is to keep your teeth healthy and your smile bright.

This web site provides you with an overview of our practice and the field of dentistry. As you navigate the site, you'll find information about Dr. Mason practice philosophy, our St. Johns office location, insurance policies, and appointment scheduling procedures. Please browse the site at your convenience and feel free to contact us with any questions or to make an appointment.

You'll find valuable information on this web site about dental problems, diagnoses and treatments. We believe informed patients are better prepared to make decisions about their health and well-being. We encourage you to review this information to help you understand any health concerns you may face.

Meet the Doctor

  • Christine M. Mason DDS

    - Masters degree focused on dental materials; member of the International Association of Dental Research. Has lectured nationally and internationally.
    - Graduate of the Dawson Academy for Advanced Dentistry.
    - Current participant in the Kois Center for aesthetic, implant and restorative dentistry.
    - Over 600 hours of continuous education in dentistry.
    - Focused on Health-centered dentistry and the mouth-body connection
    - Member ADA, MDA, Central District Dental Society, AAOSH (American Academy for Oral and Systemic Health)
    - MDA Trustee

    Click here to view the full CV

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Systemic Health and Dentistry

Our Location

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Hours of Operation

Our Regular Schedule


9:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-12:00 pm