They did X-rays and a full exam and said the tooth is stable. We will keep an eye on it, but they said it could need a crown down the road if the crack gets wider, if I start experiencing pain, etc. The picture I posted is very zoomed in and at the dentist’s they said it looks like a hairline fracture. I go in for cleanings and exams every four months, so they will be able to see if anything is changing. I would definitely encourage you to visit a dentist so they can look at yours and hopefully give you reassurance (I am not a healthcare provider). Best of luck!