About Us


In 1933 Howard Ohlendorf began working at a small Orthodontic Laboratory in St. Louis Missouri. The business began growing and within a couple of years he was able to purchase the business from the owner. In the early 70’s his son Mark Ohlendorf began working at the Laboratory and eventually took over. In 1995 Mark’s son Kevin Ohlendorf began his career in the “Family Business”. In 2013 Kevin purchased the laboratory from Mark and establised the 3rd generation owner of this laboratory.

In August of 2021, the lab was moved to a new state of the art facility just a few miles from the old building. The new Lab has allowed us to put everyone and every department under the same roof. Our new 3D Printing and Process rooms allow us to hand all of your digital scans and printing needs. Our new Laboratory was designed to allow us to meet the growing demands of our customers and improve our production processes to speed up our turnaround and improve the quality of the appliances we fabricate.

Generation to generation, the Ohlendorf Family has grown this business from a one technician laboratory to it’s current size by providing personal service, the highest quality appliances and expert techinical support………..


Since 1933, Ohlendorf Appliance Laboratory (OAL) has been a leader in the dental industry. We are a full service Appliance Therapy lab offering the finest specialized and individually fabricated dental appliances. Being a family owned, third generation business the Ohlendorf family understands the importance of our clients with complete case solutions. OAL has heavily invested in expert personnel and the latest technology to ensure your every case will be exactly as prescribed and delivered on time. Our full service lab serves all 50 states and is centrally located in St. Louis, MO. Our staff attends hundreds of hours of Continuing Education Programs each year centered around Appliance Therapy, so we can stay up to date on the latest technology, techniques, and trends in the industry. Our Expert Technical Support Staff can answer your questions with the most current information that is available. Please give us a call to experience how we will personally make a difference with your next case!


Every day we get phone calls and emails from Doctors and staff members with questions about:

  • Appliance Options
  • How to design an Appliance
  • Appliance Adjustments
  • Questions about ongoing cases
  • Solutions for patient’s needs

We are very happy to take your calls and answer your questions. Many offices are pleasantly surprised by our level of support. If you ever need assistance or have a question, please contact us first. Our Expert Support Technicians are standing by to provide solutions any problems or questions you may have. WE WELCOME YOUR CALLS AND EMAILS.

Kevin Ohlendorf

Kevin Ohlendorf Kevin@OhlendorfApplianceLab.com President & Owner – 20 years of experience It has been an honor to be part of our family business that I have grown up in my entire life. I am committed to carrying on the vision my Grandfather and Father started over 80 years ago. Our mission is to assist dentists in any way that we can to provide solutions that will benefit their patients. We want to be a resource for you and your staff to assist your office and provide you the tools and information that you need to deliver excellent care that your patients deserve.

Mark Ohlendorf

Mark Ohlendorf – Master CDT –  45 years of experience Over the years the Laboratory Business has changed in some ways, but in many ways it has remained the same. Our customers have always been able to rely on us for the highest quality appliances that fit correctly the first time and arrive in your office on time. It is my legacy to make sure we continue this tradition now and in the future.

Al Santoscoy

Al Santoscoy – Al@OhlendorfApplianceLab.com Director of Midwest Operations – 16 years of experience I specialize in providing expert guidance and options you may need in choosing the best treatment solution for your patients. We are the industry leader in providing support and advice and this comes with every case you send to us. If you have a technical question or need any assistance with Appliance Therapy, Supplies or Diagnostics, please call me directly at 1-800-325-8921. My job is to answer your questions and help you any way that I can. I attend hundreds of hours of Continuing Education Courses each year to stay current on the latest techniques and appliances that are being taught and used. You can tap into this experience and education by giving me a call.

Chris Dale

Chris Dale – Chris@OhlendorfApplianceLab.com Director of Sales and Marketing – 4 years of experience Our laboratory fabricates hundreds of different appliances for all aspects of Dentistry. My job is to help educate you about all the different appliances that we fabricate and services that we provide. We want to be the first lab that comes to your mind any time you need to have an appliance made. Your account is very important to us, and I am dedicated to making sure you are happy every time you and your staff interact with us.