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Why does deep-bite intrusion fall short of the plan?
Your software plans 3 mm of intrusion. The patient achieves 1.7 mm.
A 2026 systematic review found that clear aligners typically deliver only 50-60% of planned lower incisor intrusion in deep-bite cases. The movement is real. The predictability gap is real too.
This article explores what that means for case selection, treatment planning and why many deep-bite refinements can be predicted before the first aligner is delivered.
Jesper Hatt DDS
Jul 314 min read


What the evidence actually says about aligner materials, attachments and protocols
Every month a new aligner material lands in your inbox: smoother, more retentive, more predictable. Then you finish the case and you are looking at the same refinement scan as three years ago.
A 2025 Seminars in Orthodontics review separates what is documented from what is implied across materials, attachments and protocols. The short version: brand differences are real, but smaller than the planning differences within the same brand.
New on the blog.
Jesper Hatt DDS
Jul 34 min read


Where Digital Clear Aligner Treatment Plans Lose Precision - and What We Can Do About It
Reflections on data loss, clinical reality, and predictable outcomes in clear aligner treatment When the plan looks perfect - until it isn’t The digital plan looks flawless. Movements are smooth. Attachments are well placed. Staging appears conservative and biomechanically sound. Then the patient starts wearing the aligners. Within a few weeks, we see it: tracking issues, unexpected rotations, attachments don't track, refinements creeping in earlier than planned. We’ve all se
Jesper Hatt DDS
Dec 13, 20255 min read


The best clear aligner material
Every dentist wants the “secret sauce” behind the best clear aligner material - whether it’s PETG’s crystal clarity, SmartTrack®’s gentle resilience, or the futuristic promise of 3D‑printed resins. I get it, and I understand why I hear this question every week. In this post, you’ll get: A side‑by‑side comparison of today’s leading aligner plastics: their strengths, weaknesses, and ideal use cases. Insights on soft vs. hard durometers: why flexible sheets excel at crown tippin
Jesper Hatt DDS
Aug 23, 20256 min read


Why Printable Clear Aligner Materials aren’t ready for clinical use yet
Material and Software Limitations The advent of 3D printing technology has revolutionized various sectors within dentistry, offering unprecedented opportunities for customization and efficiency. In orthodontics, the prospect of directly 3D printing clear aligners promises to streamline production, reduce waste, and enhance patient-specific treatments. However, despite these potential advantages, printable clear aligner materials and the associated design software are not yet
Jesper Hatt DDS
May 2, 20256 min read


SureSmile - advantages & disadvantages
SureSmile was developed by OraMetrix, a company founded in 1998 by Friedrich Riemeier and Dr Rohit Sachdeva. The company was launched...
Helle Hatt
Jun 28, 202116 min read
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