Hello Sir
Since you don’t have any pain, It is likely that the fracture must have occurred at a superficial level. But leaving it this way is not safe. It is exposed to oral environment and will lead to infection and pain subsequently.
You need to visit your dentist, get it properly checked. He might take x ray to see the status of tooth nerve and root. Only after that a proper treatment can be done.
It cannot be cured at home on your own.
Next Steps
Kindly visit your dentist
Health Tips
Don’t wait for any symptoms to occur, it might be too late