5 year old with toothache

[ellimac]

My son got a filling on his 55 molar 18mos ago. The cavity was very small and was caught early (according to his dentist) as we have the kids teeth cleaned every 6mos. A mknth ago, he started complaining of tooth pain in the same area. I immediately took him in to see a dentist (our usual was off for the month) andafetr an ray and exam, all she could see was a small scratch on is gums which she thought was the cause of his discomfort. She told me to bring him back in if the pain continued but he did not complain again. We have been in vacation for the past 2 weeks and he was complaining intermittently of pain in the area. I made him an app't for today as we got back last night. When he woke up this morning, his cheek was swollen. The dentist said that it couks be an infection in his gums or an abcess beneath the tooth that was filled. She took 2 rays which were inconclusive. The tooth did not hurt when she tapped on it but it is loose when she wiggles it and he said it hurt a bit when she was moving it. She said that if it is anabcess, the only option is to pull the tooth. She also said that sometimes a tooth can develop an abcess long after a filling and that it doesn't,mean the treating dentist did anything wrong. She was reluctant to pull the tooth as she thought there might be a chance that the gums are infected (his 54/55 are very tight and food often gets caught between the teeth ans we often have to floss twice). She has given him 10 days of antibiotics and told me to take him back in 2 weeks to reassess. Does this sound right or should I be taking him to a pediatric dental specialist?