Cracked Teeth Clinical Guidelines – Chase? Fibers? WHEN to Intervene – PDP246

Cracked teeth — the diagnosis we all hate as Dentists! How do you decide when to monitor and when to intervene? What is the recommended intervention at different scenarios of cracks? Should we be chasing cracks and reinforcing with fibers; is there actually enough long-term data to support that approach? Over the years, we’ve had some epic episodes on this topic — from Kreena Patel’s “I Hate Cracked Teeth” (PDP028) to Dr. Lane Ochi’s Masterclass on Diagnosis and Management (PDP175). But in this brand-new episode, Jaz is joined by Dr. Masoud Hassanzadeh to bring it all together — not just the diagnosis of cracks, but their management. They explore when to intervene, the role of fibers in preventing propagation, and even the fascinating possibility that cracks in teeth may have some ability to heal, just like bone! This one’s a deep dive that will change how you talk to patients — and how you approach cracked teeth in your own practice. https://youtu.be/VHYRBnfJS3I Watch PDP246 on YouTube  Protrusive Dental Pearl Your patient’s history predicts the future! Ask if past extractions were difficult → clues you into anatomical challenges. Ask how they lost other teeth → if cracks, be proactive with today’s cracks. History isn’t just background—it’s a clinical tool. Key Takeaways Cracks in teeth can be diagnosed using magnification and high-quality imaging. Patient factors such as age and muscle strength play a significant role in crack prognosis. Symptomatic cracks should be treated to prevent further propagation. Understanding the anatomy of the tooth is crucial for effective treatment. The healing mechanism of cracks in teeth is possible but varies between enamel and dentin. Fibers can be used to strengthen restorations and manage cracks effectively. Long-term studies are needed to assess the effectiveness of current crack management protocols. The use of fluorescence filters can help identify bacteria in cracks. Chasing cracks should be done cautiously to avoid pulp exposure. A comprehensive understanding of crack mechanics can improve treatment outcomes. Highlights of this episode: 00:00 Teaser 00:47 Intro 03:08 Protrusive Dental Pearl - The Importance of Dental History 07:18 Interview with Masoud Hassanzadeh 08:22 Diagnosing and Managing Cracks 21:13 When to Intervene on Cracks 25:50 Restoration Techniques and Materials 28:30 Chasing Cracks: Guidelines and Techniques 36:50 Mechanisms of Crack Healing in Teeth 45:11 Exploring the Use of Fibers in Dentistry 52:43 Introducing the Book on Cracked Teeth 54:57 Percussion-Based Diagnostics (QPD) 56:44 Key Takeaways 57:21 Conclusion and Final Thoughts 01:00:07 Outro As promised, here are the studies mentioned during the discussion: Why cracks do not propagate as quickly in root dentin: Study 1a & 1b Root dentin has significantly higher fracture toughness compared to coronal dentin—nearly twice as tough, as demonstrated in multiple studies. The key difference lies in their structure and toughness. Root dentin’s unique collagen orientation adds strength, while its fewer lumens and thinner peritubular cuffs make it less brittle. In contrast, coronal dentin has thicker cuffs, which increase brittleness. Unlike coronal dentin, which fractures uniformly, radicular dentin is anisotropic—its fracture behavior varies depending on direction. These structural features give root dentin greater resistance to cracking, making it more durable under stress. Studies on decreasing crack length due to crack repair in enamel. Study 2 The importance of the modulus of elasticity of the final restoration in arresting crack propagation. Study 3 The role of fiber in restoring cracked teeth and how it can increase fracture strength—even surpassing that of natural teeth. Study 4 Decision Making for Retention of Endodontically Treated Posterior Cracked Te...