Dr. Densen Cao : Dentistry Uncensored w/ Howard Farran #1711
About this episode
Howard Farran interviews Dr. Densen Cao about innovative dental technologies and the LEAP procedure for root canal success.
In this episode, Howard Farran welcomes back Dr. Densen Cao — physicist, prolific inventor, and founder and CEO of CAO Group and AMD Lasers — for his first return to the show in eight years. Mentored early in his career by Dr. Gordon and Dr. Rella Christensen, Dr. Cao has spent decades developing disruptive dental technologies at the intersection of physics, materials science, and clinical dentistry. The heart of the conversation is his newly released LEAP procedure (Laser Endodontic Ablation Procedure), unveiled at AAE 2026 after five years of FDA review and more than 100 U.S. cases. Dr. Cao explains why disinfection — not obturation — is the true key to root canal success, and how LEAP uses a low-energy diode laser to ablate residual tissue and bacteria, paired with a proprietary LEAP solution of chlorhexidine and ethanol to reach the fins and side canals. The result, he says, is a five-nines (99.999%) bacteria reduction achieved in live patients, with an independent clinical study by Dr. Rella Christensen now underway. The discussion then moves to prevention, where Dr. Cao introduces his caries risk testing strips — which measure salivary pH and buffer capacity with a simple…
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