Dr. David Brian Jacobson, DMD

It depends on a few factors, but if your dentist recommends treatment and you don't go ahead with it, you risk getting a nasty infection in your mouth that has a risk of spreading; you also risk having the tooth get too decayed to be saved and then needs to be extracted. Delaying the treatment for a week may be an option, I would ask your dentist if that was medically safe to do.... but you should get the tooth treated. The alternative treatment option for root canal treatment is extraction - having the tooth removed. We always advise you to save your natural tooth when it's possible!

Depending on how much bone is left, dental implants may be an alternative to complete dentures. You would need to see an implant surgeon for an evaluation.

Dental implants are a great way to replace missing teeth. If there is not enough bone, then a bridge that covers the missing tooth with a fake tooth is another option. Lastly, a removable partial denture may be an option as well.

You should floss your teeth every night as part of your pre-bed routine, along with brushing and rinsing. You should also floss your teeth whenever food is impacted - if you feel a popcorn kernel stuck in there or if spinach if visible.

Usually both an X-ray and intra-oral examination are done to assess if a tooth has an abscess.

Orthodontics are one option to close the gap, alternative cosmetic options include Porcelain Veneers or Composite buildups. Talk to a cosmetic dentist about your options.

Yes there is fee for service dentistry.
Your dentist will have a set fee for these procedures and you can pay them.

Sounds like you should go back to that dentist and make sure. If you had a deep cleaning then some light swelling and bruising can occur. Warm salt water or non-alcoholic mouthwash can help keep the area clean... it can take a few days to calm down after a deep cleaning.