Can someone's teeth be saved if they have a high amount of calculus on their teeth?

Yes: They need to see a dentist for a thorough evaluation and determination of a treatment plan. Consider more frequent professional cleaning appointments (possibly every 2 months if necessary), consider perio protect, a non-surgical periodontal therapy using easy to wear rubber trays, that works well for compliant patients. www.perioprotect.com.

Yes very likely: Depends on your bite and the condition of the supporting gum and bone under the calculus.

Most Likely: You should go to a dentist and have a full set of xrays taken then they can see your bone levels and determine if you just need a deep cleaning or if you will need to have gum/bone surgery. Calculus can lead to bone loss but it doesn't mean you will loose your teeth. Go to a dentist have regular scheduled cleanings and good home care.

Other key factors: It's not the amount of calculus present that determines whether or not teeth can be saved. Bone loss and non-restorable teeth from decay leads to tooth loss. Some people have tremendous amounts of calculus and have no bone loss or decay, while others have moderate chronic calculus but severe bone loss and rampant decay. Get a comprehensive exam & x-rays and a treatment plan with options.