About Us


The history of our practice...

Dr. Peter Orr, DDS started our dental practice in 1968 in northeast Columbia on Towne Drive. Dr. Gunilla Murphy became an associate of Dr. Orr when she graduated from the UMKC School of Dentistry in 1988, and she bought the practice from Dr. Orr two years later. Dr. Orr retired in 2000, and Dr. Sally Powell joined the practice in 2001 after she graduated from the UMKC School of Dentistry. She bought the practice from Dr. Murphy in 2006, and Dr. Murphy retired in 2016 from the practice. Our current staff includes two Registered Dental Hygienists, a patient care coordinator, a financial coordinator, and three dental assistants.

Sally C. Powell, DDS, LLC moved to the Village of Cherry Hill in February 2010. We currently have four treatment rooms, separate lab and sterilization areas, digital x-ray including a panoramic x-ray, a business office and consultation area. We also purchased all new dental chairs, dental lights, computers, and many other items to support our updated facility. We are thrilled with the changes and are working to provide even better care for our patients. The best part of our current location is that our patients are thrilled with the changes as well. We still have many patients who started coming to our practice in 1968 when the practice first opened.


Dr. Sally Powell, DDS

Hello, my name is Sally Powell. I have been in practice in Columbia as a general dentist since my graduation from the University of Missouri-Kansas City School of Dentistry in 2001. I received my undergraduate degree at the University of Missouri-Columbia, so I feel comfortable calling Columbia home. I am currently a member of the American Dental Association, the Missouri Dental Association, the Columbia Dental Society, and the Academy of General Dentistry. These memberships allow me to remain current on all of the new developments in the field of dentistry. In keeping with that commitment, in 2013 I received recognition from the Dawson Academy and was awarded the Concept of Complete Dentistry. This award is given to members who complete 137 hours of continuing education at the Dawson Academy, a postgraduate educational and clinical research facility, dedicated to the advancement of dentistry. Personally, I am a member of the Columbia Mothers of Multiples Club, since I am the proud mom of twin girls. I am also a member of the Columbia Chamber of Commerce, Women’s Network and PEO. I also have a passion for children’s dental health. Because of this, I work with several local organizations to help provide dental care for children who would not otherwise have access to dental care.

I am very excited to be treating patients at our new location with updated equipment and other technology that will assist us to provide the most current dental treatment available. I will work with you to create a treatment plan that is affordable and meets your specific needs. I strive to make my patients as comfortable as possible, and I always have time for any questions you may have. I welcome new patients, so please call 573.474.8566 or email us to make an appointment.


Our Staff



Paula – Patient Care Coordinator

My name is Paula, and I am the Patient Care Coordinator. When you call you will probably talk to me first. I will make sure your appointment time suits you, and I will answer any questions you may have about your appointment. To schedule an appointment call me at 573.474.8566 or email me and I will be in touch with you.


Lea Ann – Financial Coordinator

Hello, my name is Lea Ann and I am the Financial Coordinator. I have been in the dental field for over 17 years. I am the person to help you understand your insurance policy and file your insurance for you. If you have any insurance or billing questions I encourage you to call me at 573.474.8566 or email me. I look forward to meeting with you.


Kelly – Dental Hygienist

Hi! My name is Kelly, and I am a registered dental hygienist. I am from Illinois. I received my hygiene degree from Southern Illinois University at Carbondale. My job is to help you keep your teeth and mouth as healthy as possible. It is fun to meet new people, and help them understand how they can keep their teeth for a lifetime. Removing tartar, stain, and plaque on a regular basis is part of the plan. Along with proper home care and some coaching, everybody can have a healthy, comfortable smile. There are a tremendous selection of brushes, picks, pastes, rinses floss, etc. on the market today. I will help you determine what will work best for you.


Whitney – Dental Hygienist

My name is Whitney and I am a registered dental hygienist. I am originally from Columbia, and I graduated from the University of Kansas City-School of Dentistry with a BS in Dental Hygiene. When you come and visit me I will remove tartar, stain, and plaque from your teeth. Your teeth will feel smooth and polished. Your comfort is very important. Part of the regular exam we do in our office includes an evaluation for periodontal disease, tooth decay, and oral cancer. I will evaluate your home-care and give you advice on how to improve if needed. Please ask me any questions you may have about your oral health.


Leah – Dental Assistant

Hi my name is Leah and I have worked in this dental office for over 24 years. I was a patient of Dr. Peter Orr before I came to work for him as a dental assistant. I graduated from Columbia College and transitioned to the front desk as office manager. I took some time away working in other business fields but missed working with patients. When Dr. Gunilla Murphy had an opening for a dental assistant, I jumped on the opportunity to return to this office and have been very happy every since. I have become certified as an expanded functions dental assistant which allows me to be more involved in the care of our patients. I always have time to answer any questions you may have, so please ask!


Debbie – Dental Assistant

My name is Debbie Murray. I am married, and I have two children. I am originally from Texas and I attended Baylor University. I have worked part time for Dr. Powell for the past four years as a dental assistant. I enjoy meeting each patient and helping assist Dr. Powell as she cares for each patient. This job keeps you on your toes, and it is rewarding as you see the results and smiles on patients faces.