Can you tell me is it okay for my 4 year old to go under general for his abscess teeth and for caps/fillings in a clinic?

Medical history: Only after a review of the child's medical history, together with a pediatric consultation, could a dentist make that determination. This should be discussed with the child's treating dentist.

GA for 4 yr old?: Dental infections if left untreated in children can lead to serious complications. Decayed teeth can lead to infections if untreated. One always has to weigh risk vs. Benefit in these cases. A good pedodontist might be able to treat a child with these conditions without using general anesthesia (but not always). I would prefer not to use ga but would rather take risk than suffer more serious issue.

Safety first!: An abcess should be treated immediately before the infection spreads to other parts of the body via the bloodstream. I would be sure that the doctor administering the general anesthetic is licensed to use it and performs this procedure in an out-patient surgicenter or hospital environment. You want to be sure that your child can be helped, if necessary, by trained medical/dental personnel.

If he needs it: Typically this is performed in a hospital setting. While the assumed risks are greater than that of other treatment options, if this is suggested for your child, the benefits of treatment this way have been deemed to outweigh the risks. Most pediatric medical literature places the risk of a serious reaction in the range of 1 in 25, 000 to 1 in 200, 000, far better than daily car driving risks.