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Want to ask a dentist a question but don’t want to pay an exorbitant consultation fee?

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To ask a question, click on any topic below, then scroll to the bottom of the page and fill out the form.  Our resident dentist, Dr. Qin Li, will reply to your question as soon as she can.

Note:  Dr. Li can only reply to general questions about dental practices and procedures and not to questions about your personal dental condition(s), as there are many factors involved in assessing cavities and other dental diseases that cannot be accurately diagnosed without a proper examination.

Thornhill, Vaughan, Richmond Hill Dentist

Silver Diamine Fluoride

An FDA-approved breakthrough therapy for stopping the growth of existing cavities.
A Digital Panoramic Dental X-ray Machine

Digital Dental X-Rays

Digital x-rays reduce radiation and provide instant, high-definition results.
A Photo Of A Smile With Healthy Gums

Gum Disease

Many adults currently have some form of gum disease. Find out what causes gum disease and what you can do to prevent it.

Teeth Cleaning

Professional teeth cleaning can help prevent cavities, tartar build-up and gum disease.

Tooth Decay

Fix cavities and restore broken-down teeth to their original beauty.
A Man Receiving A Dental Exam

Dental Exams

Regular professional examinations can catch problems before they become serious.

Cavity Fillings

Fillings restore the appearance and strength of damaged teeth.
Smiling Couple With Great Teeth

Tooth Replacement

Replacing missing teeth can restore your smile and prevent further problems.


Restore the natural look of your smile and chew with confidence.

Crowns and Bridges

Restore the look and function of damaged teeth.
Smiling Man

Root Canal Treatment

Fix a painful, infected tooth and restore its natural appearance.
A Sleeping Woman

Clenching and Grinding Teeth (Bruxism)

Find out what you can do about grinding your teeth.
Tongue Tie - Before

Tongue-Tie (Ankyloglossia)

Correcting tongue-tie early can dramatically reduce the probability of serious dental or speech issues.
Smiling Woman

Wisdom Teeth Removal

Have your wisdom teeth removed safely and professionally.
Tooth Pain

Laser Cold and Canker Sore Treatment

Heal cold and canker sores quickly, painlessly and effectively.
Man Smiling After A Successful Tooth Extraction

Tooth Extractions

Have a problem tooth extracted professionally.
Bad Breath

Bad Breath (Halitosis)

Find out what's causing your bad breath and get professional help.
A Bright White Smile

Teeth Whitening

Professional teeth whitening can achieve great results in very little time.
Great Smile - Picture Of Smiling Woman

Dental Bonding

Improve the appearance of your teeth with a simple cosmetic procedure.

Cavity Fillings

Fillings restore the appearance and strength of damaged teeth.
Smiling Couple With Great Teeth

Tooth Replacement

Replacing missing teeth can restore your smile and prevent further problems.


Restore the natural look of your smile and chew with confidence.

Crowns and Bridges

Restore the look and function of damaged teeth.
Dental Implants - Photo Of Smiling Couple


One of the most effective ways to replace a missing tooth.

Porcelain Veneers

Improve the appearance of teeth that are stained, damaged, or appear too small or crooked.
Certified Invisalign Provider - Vaughan

Invisalign® Clear Braces

Clear, removable aligners are a discreet and convenient way to straighten your smile.
Six Month Smiles Certified Provider - Richmond Hill

Clear Six Month Smiles® Braces

Get straight teeth in as little as six months with Six Month Smiles clear braces.
Gum Contouring

Laser Gum Contouring

Gum contouring can even out your gum line and improve your smile.
Bad Breath

Bad Breath (Halitosis)

Find out what's causing your bad breath and get professional help.

Don’t see your topic above?  Post your question using the form below!

This Page Has 16 Questions

The information provided below does not constitute dental advice and is general in nature. It does not take into account your personal dental health and should not be acted on without consultation with a certified dental professional.

Bathurst Centre Dental Care accepts no liability for any loss or injury arising out of the use of this website or reliance on the content of this website.

  1. I’ve had several teeth either pulled or sanded down, completely improperly which has left me in an extremely uncomfortable state. What type of dentist should I see and what steps should I take to regrow the enamel on the sanded teeth and put back the teeth that are pulled, making sure they are alive in the process? I’ve been advised of artificial solutions before but per my research they will do even more damage so I will not consider them as an option, nor will I accept an answer that advises me to seek them, only one that will get me my original healthy teeth back. Thank you.

    1. Hi Noah, unfortunately there is currently no commercially available treatment for regrowing enamel or teeth that have been extracted. There is research being done in this area though, so hopefully it’s an option dentists could offer in the future!

  2. Hi. I have two sons, ages 10 and 7. My oldest has white spots on some of his adult teeth, specifically his two upper front teeth and first adult molars. My youngest has one hypoplastic molar in his adult molars. As his front adult upper teeth emerge, at least one is already showing white spots. What causes this? I have been extremely conservative about the use of fluoride and antibiotics. Where we live, the water is not fluoridated. How possible is it that both of them have this from a virus or mouth trauma?

    1. Hi Karen, white spots (also known as hypoplasia) on one or two adult teeth is relatively common, although most of the time it’s difficult to identify the exact cause. Both environmental and hereditary factors could be at play. Fluorosis is a common culprit, although it sounds unlikely in your children’s case. The most current recommendation for preschoolers is to use only a pea-sized amount of toothpaste with fluoride and to make sure they spit out the toothpaste and do not swallow it. Hypoplasia can also be caused by local infection from baby tooth decay or trauma to the mouth during the development of permanent teeth (such as a hard bump on a table corner, biting into a fork too hard, rough play with siblings, a sports injury, etc.). Other factors include viral infection while calcification of the teeth is still occurring. Most of the time, it’s really hard to pinpoint a specific event or cause for the white spots. If you’re concerned about them, I would encourage you to make an appointment to see your dentist.

  3. My tongue seems to be continually covered in a fine (not chunky) white film. I scrape it off with a tongue scrape but it comes back the next time I brush. I brush twice or three times per day and use Listerine or hydrogen peroxide mouthwash.

    1. Hi Andrea,
      Unfortunately, I cannot tell you what the white film is without a physical exam. There could be many potential causes such as dry mouth from certain medications, or dehydration. It could also be an accumulation of dead tissue or food debris. Please consult your dentist to rule out any potential candidiasis, which is a fungal infection.

  4. Hi I hope you can help me.
    A year ago I had a tooth removed which left communication with the sinus. Last week I had a sinus lift using bone graft. Within five days the bone graft had fallen out of the hole where the communication had been. Im back to square 1. My question is, what was supposed to be holding the bone graft up stopping gravity just letting it fall out ? Because that’s pretty much just what it done. It just fell down into my mouth. 😕

    1. Hi Tim,

      For the sinus lift and bone graft you had, I am going to assume that you had particulate bone placed in. Particulate bone are loose smaller pieces of bone that can be more easily manipulated and packed into places. They are held in place by the sinus membrane on top, existing bone or gum on the surrounding surfaces, and gum facing the mouth is sutured together to prevent the grafting material from falling into the mouth. Sometimes a membrane maybe placed in between the bone graft material and the gum.

      In some grafting cases, a larger single piece of bone or a block bone is needed if the bone defect is large. A block bone graft is usually held in place with mini screws. I hope this helps.

    1. Hi Alex, some chewing gums have sugar. Chewing gum with sugar constantly may increase the likelihood of cavities. Sugarless chewing gum is a better alternative for your teeth. The constant chewing motion will often lead to more muscle fatigue and wear and tear of the jaw joint. Prolonged chewing should be avoided in people with TMJ (jaw joint) pain. The human mouth is full of bacteria, rechewed gum is usually laden with bacteria, something you may want to avoid for better oral health and overall health.

  5. I never can breath from both nostrils since I can remember unless I take afrin type med. Right now. My teeth,gum, everywhere in my face throbs every 2 mins . Only cold fluid calms the pain. What’s going on?

    1. Hi R, please make an appointment with your dentist as soon as you can to see if the pain is caused by a dental infection.

  6. I went to the dentist Tuesdays of this week… A filling came out about 1 month ago back bottom right molar… i put Temp dent to replace it when i thought the pain was manageable. The dentist gave me Amoxicillin and Ibuprofen 800mg today is thursday and im still feeling a lot of pain where i put the Tempdent… My question is should i remove the Temp Dent?

    1. Hi Rodney, please consult your dentist regarding removal of the tempdent. If your dentist prescribed antibiotics because the tooth is abscessed, removing the tempdent may not offer much pain relief. Amoxicillin may temporarily keep the infection from spreading, but you should visit your dentist for a more permanent solution to the abscessed tooth as soon as possible.

  7. Hello. I have second molar moved into the position of first molar using TAD braces. I also now have an implant in the position where second molar used to be and I have to remove the implant or I can just bury the implant under the gums. Would I have to wear a retainer to prevent my second molar from tipping back where it used to be or would the buried implant prevent the movement of first molar?I can’t have more implants unfortunately

    1. Hi Lizo, since the implant is not going to have a crown, it’s unlikely to prevent the crown of the original second molar from tipping back. Please follow the instructions of your orthodontist regarding the use of a retainer for your particular case.

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