I don't know why you are freaked out. It's a simple IV and they go to sleep, the doc does all the work, the kid wakes up and wants to go eat and play at McDonalds. They don't remember it, they still like the dentist after it's over, they don't have any issues.
It is the most humane way to treat any dental issues.
If the doc opted to pull it instead I guess the molar would be missing a long time if he isn't going to loose the baby molars until he's at least 10. I don't know. If the doc said he could save the tooth or do a root canal and cap it I would not want him to do that until the infection was gone so none of it could be trapped under the cap.
Our girl fell at her moms and broke her front tooth off. The regular kids dentist would not even examine it. She gave me a list of Pediatric Dentists to call. I called, made an appointment, she went in, went to sleep, woke up happy and playful, wanted to go eat since she was NPO since midnight the night before. No crying, no screaming, no issues whatsoever.
The boy had tubes put in last year. He went in happy, came out screaming like a banshee, fighting everyone, hitting, kicking, not consolable until about 1/2 hour out of surgery. They didn't put him out with GA, it was a gas instead.
He had dental work done in the hospital out patient surgery with GA. He woke up happy, pulled his IV out, rolled over and went back to sleep. He woke up about 20 minutes later and wanted to go eat at McDonalds and play on the playground.
It was the easiest thing we have ever done. GA is easy and safe.