We specialize in dental marketing and closing Big Dental Cases in volume. Our philosophy is that the production per patient is more important than the number of new patients attracted from the dental marketing. We create digital marketing campaigns and training programs that consistently produce Big Profitable Cases that allow you to see Massive Increases in your production without the need to see more patients. In short… we allow you to work less, and make more… work smarter, and not harder…
We created a revolutionary program, The Closing Institute, to give doctors of all specialties and their team the exact techniques to close high-dollar cases in volume. This is a 2-day, immersive, kick-off event for doctors, office managers, and treatment coordinators. The primary objective of this event is to help each of you understand the other’s roles within the treatment planning and sale-closing process.
By combining advanced dental marketing strategies with proven sales training, team motivation, and ongoing business coaching, we help doctors and their teams consistently increase implant production and dramatically improve case acceptance. Recognizing that many practices needed more than just leads to succeed, Bart Knellinger created The Closing Institute to help Progressive Dental clients develop the communication, consultation, and sales systems necessary to confidently close high-dollar implant cases. Through The Closing Institute Boot Camp and ongoing mentorship program, practices receive hands-on coaching, consultation critiques, accountability, and continuous support designed to help teams improve case acceptance rates, increase full-arch production, and maximize return on investment (ROI).
We’re a company that specializes in dental practice growth by attracting and closing high value, Big Dental Cases. We provide a turn-key solution to succeed with dental marketing, team motivation, sales training, and strategic business coaching. We are the only dental marketing company that can truly generate high-dollar leads and provide you with a sales system that will ensure a high closing percentage and a phenomenal return on your investment (ROI).
Cleveland's Transformation Story
Cleveland's Transformation Story








Bart has been entrenched in the dental industry his whole life. He founded Progressive Dental in 2009 after his father, Dr. Dan Knellinger, asked him what he could do to attract more patients who needed advanced dental procedures for periodontal disease. Bart decided to redirect his father’s general marketing efforts to a treatment-focused approach. Upon seeing the results, he knew he was on to something great.
After several years of successfully generating new leads for clients, Bart realized that getting those leads in the door wasn’t enough. His clients were trained in dentistry, not sales and they struggled to convert. So without hesitation, he created The Closing Institute, dentistry’s first and only proprietary sales process and continuing education program. Due to constant innovation, growth, and long-term client retention, Progressive Dental has become one of the fastest growing companies in the country.
Gerritt Cora has been with Progressive Dental since its inception in 2009. With his contagious charisma and ability to create seamless full-circle strategies, Gerritt has helped thousands of dental practices identify new opportunities and areas of growth that have catapulted them into a league of their own.
Gerritt studied financial consulting and marketing at the University of Miami, and has brought his expertise to the field of dentistry, helping clinicians reach their goals for ultimate success. Skilled in strategy development and motivational speaking, he has spoken for a variety of industry organizations and can be found lecturing and training practices across the country on the art of sales.