eyanosa,

Brushing your remaining teeth will decrease the amount of food debris on those teeth. Which is very important because food debris rots on the teeth and turns in a bacteria that contributes to infection. So it is imperative to brush your teeth. It is also best to have a clean mouth when you have the rest of your teeth removed ... the less plaque there is the cleaner the surgery will be.

You really should have tried to call your dentist over the weekend. Every dentist has to be on call 24 hours a day and if they are away they have to have another dentist on call for them 24 hours a day. That is the law, irrelevant of where you live and I'm sure he would have gotten back to you.

Regarding the antibiotic... amoxicillin and clindaymcin are both effective in dealing with dental infections even when they are in the jaw bone. Sometimes the species of bacteria causing the infection are resistant to certain antibiotics. So in those cases a different antibiotic needs to be prescribed. If that is your particular case, your dentist would not have known that when he prescribed amoxicillin.

I hope you start to feel better soon.