Tooth and Mouth Problems

I have done 1 extraction of upper right first premolar . My 3 teeth have cavity and is almost 60 -80 percentage loss . These are lower left canine , lower left first premolar and lower left second premolar. RCT done for 2 of them. Wanted to have braces as teeth are not in aligned at all.

I have small cavity in my tooth ..can it cure without drilling? And i have another tooth cavity with a hole and how can i treat it ?

How long will dental bridge last can a bridge last forever by replacing it every 10-12 years. will there be be any problm of gum below pontic

I have extracted my ist molar and i want to fill the gap between premolar and 2nd molar by invisible braces how much time will it take and how much it will cost

My cusp is splitted like this as in the image it is shown can this tooth be saved or have to extract it

What should be my standing, sitting or reading , sleeping posture when I have condition like cervical spondalytis or neck and back discomfort with little pain due to tmj disorder problem?

I have been suffering from bleeding gums(gingivitis) for a long term (~1yr). I did cleaning so many times in the dental clinics and also gone for laser treatment for gums (as described by doc) to overcome this problem but no use. I am using soft brush I brush twice a day(circular motion) Using mouthwash and metrohex gel for gums. Still I have this disease and it is getting worse. Please advise.

But i dont want the one which is prominently visible,as in also concerned it might make me look ugly can u suggest some other kind of braces for me

Severe pain in the side tooth root due to decay. The tooth is completely decayed and pain observed in the root area.

Some years ago I had floride golden clr marks on my teeth. For that I got done one unscientific process on my two front teeth (upper) which resulted erosion of teeth for some extent. It's been 10years but now some white patches are showing up on my front teeth... I regretting now for opting that process at that time.. plz help me out without replacing my original teeth with ceramic teeth or wt ever plz give me suggestions to look this normal plz as I am going to get married soon. So it shouldn't be hurdle for me to smile freely plz do help thanks in advance.