Craze lines are tiny, hairline cracks on teeth that run vertically (up and down) across the surface. Craze lines tend to be more of an aesthetic issue.
Jonathan S Dean DDS - What are craze lines? Craze lines are minute vertical lines that form on the teeth. Cracked teeth and craze lines are often confused for each other; however
Richmond Endodontic Centre
Everything You Need to Know about Craze Lines on Front Teeth, Dentist in Roswell, GA, TruCare Dentistry Roswell
Easy Ways to Treat Craze Lines: 10 Steps (with Pictures) - wikiHow
What Are Craze Lines? - Boyett Family Dentistry
Possible to get a cracked tooth from retainer? : r/Invisalign
What Causes Craze Lines on Front Teeth?
Craze Lines on Teeth: Are My Teeth Cracked?
What are craze lines?
What Causes Craze Lines on Front Teeth?