About Us


Delivering peace of mind that is true to fit and function.
True Function is a leading fabricator of dental appliances and devices hand-crafted to fit the patient right the first time.


We have the top reputation for providing the best services and products in our industry.
Since 1999, our goal has been to elevate the industry by producing American-made devices in La Mesa, California, delivered on time, and built precisely to your specifications.


Tried & True: Quality is our middle name
Friendly & Personalized: Serious about Service
Loyal & Intentional: We got your back
We are committed to providing clients peace of mind by delivering high-quality dental appliances with excellent customer service. We recognize our employees for the commitment to our values and their contributions to True Function’s success.

Our Commitment

At True Function we have a true commitment to our Four Pillars of Success.


Our technicians bring a combined 120+ years of expertise to True Function. They strive to build oral appliances that are correct the first time and eliminate hassles for you and your patient.

Technology & Innovation

As a solutions-oriented company, we are vitally aware of technology’s importance to our industry. We offer convenient state-of-the-art digital options. Our portal makes it simple to order, label, track, view invoices, and communicate.

Customer Service

We value the partnerships that we have with our clients and strive for a customer service experience that is both friendly and personalized. Every interaction and case is an opportunity for us to live our purpose- delivering peace of mind that is true to fit and function.


We equate education with progress. We present and participate in educational and training events throughout the year. Additionally, we pride ourselves in investing in our greatest resource, our talented group of employees, by offering industry-related education and development.

Our History

Building a Legacy

Over 25 years in the making

Since being established in 1999, the True Function team has grown and had many accomplishments. Take a look below at the highlights of all the cool things we have done throughout our history.
Frank opens Frank’s Dental Lab offering orthodontic appliances and TMJ splints operating our of a local dentist’s in-house lab.
Frank’s Dental Lab exhibits at its first dental trade show in Sarasota, FL.
Frank’s Dental Lab moves to a new 700 square foot facility and begins offering The-Silencer. The team grows by 50%.
Frank’s Dental Laboratory becomes a full-service lab rebranded as True Function Laboratory, Inc.
True Function moves to its current location and purchases its first dental milling unit. The team grows by 67%.
True Function retained all employees and continued to service all our clients during the Great Recession.
Purchases first 3Shape 3D scanner.
True Function expands facility to 3,700 square feet and purchases first Stratasys 3D printer.
True Function purchases first dental milling unit and begins to offer milled devices.
True Function receives FDA 510k on TrueDorsal device.
True Function receives FDA 510k on TrueHerbst device and later receives PDAC approval. Introduced recognition program to reward employees for excellent productivity.
Implemented LabNext which offers a DDX Doctor Portal where customers can submit their own cases and track the progress of their cases online.
True Function revenue grows as planned to pre-pandemic numbers and the team grows by 19% over pre-pandemic team size.
True Function focuses on Vision, Mission, and Values with the goal of becoming a place where team members, customers, vendors and business partners experience peace of mind.

Our Story

In 1999, when Frank Madrigal was working as a dental assistant, he noticed a lack of expertise, service, and quality in the dental appliance industry. He envisioned creating the most hassle-free laboratory for clinicians offering modern high-tech fabrication and old-fashioned customer service. In that moment, True Function found its humble beginnings.

What started as a small dental lab operating out of a dentist’s office has grown to become a leading fabricator of dental appliances for the treatment of OSA, TMJ splints, and Occlusal guards. True Function has and will always be committed to providing its clients with peace of mind to their patients with a device that is true to fit and function.

Our Team

Skill. Expertise. Dedication.

We are a family-owned and operated business. The True Function community of technicians are highly skilled artisans with a combined 120+ years of experience fabricating dental appliances. Our team is expertly instructed so that, even at the chairside, your questions and concerns have immediate responses.