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LeAnn Rimes is suing her dentist for messing up her mouth so bad that it is affecting her career.

The country singer is claiming the 9 root canals and bone grafting she went through with Dr. Duane C. McKay has impeded her ability to perform.

Rimes went to the dentist for over 3 years and got cosmetic veneers and crowns as well as the many surgeries.   In the lawsuit, TMZ is reporting

, that Rimes claims to also have had to have physical therapy.