Re: Please advise!! 2 dentists , different diagnosis , should I see a 3rd?
Just to complicate things further, both your dentists are correct. Your first dentist gave you the antibiotic of choice - amoxicillin. It takes at least three days before it starts to work. The clindamycin is for anaerobic bacteria and should help also, but it too, will take about three days before improvement is seen. While taking clindy, do eat some yogurt everyday or take some probiotics to protect you GI tract. Clindy will kill off the good bacteria that it needs, too. Any indication of GI distress in the form of diarrhea, call your dr immediately.
With your tooth. Your one dentist thinks a second root canal will solve the problem (did he see an infection on xray?) and the tooth can be saved. The other dentist may have decided the tooth was fractured. If that is the case, extraction is warranted.
Did either dentist mention a crack in the tooth below the gumline? If so, the tooth is usually not salvageable. If extraction is the eventual choice, an implant to replace is the best option.
Only thing you can do at this point is to take the full course of antibiotics and go from there. Fractures can show up after swelling comes down. In the meantime rinsing your mouth with warm salt water (1/4tsp per 8oz) can be beneficial.
GOOD LUCK and let us know how you are doing.
Best to you,