Any alternative method is there other than surgery?

Hi,
I’m working as a housewife and has got 2 children of 2 years and 4 years old. Last day there was an incident that I was busy in the kitchen and both of them were playing. You can imagine, how naughty will be both of them if they are alone?
In between their play, some fighting started regarding the game and one pushed the other one and he falls down to the floor hitting his teeth.
By hearing this sound, I rushed to them and found that the younger one’s teeth have cracked and it’s started bleeding. We took him to the emergency dental clinic in guelph for treatment. The doctor who consulted him told that need to have surgery. We are very much tensed by hearing this surgery.
Is there any other method other than surgery? Is it very painful or will it have any side effects in the future?
Please share your experience.
Thank You!