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Dentistry/mouthguard and root canal tooth


Hi Dr. Teig,

I just did a retreatment of a root canal at the endodontist but I forgot to ask this question to him so I was wondering if you know this. After retreatment, is it safe to wear my mouthguard? I haven't worn my mouthguard in months so when I fit it in tonight it's going to be tight and probably will squeeze the tooth at the front. Since there will be pressure put on the tooth from the mouthguard, is that okay or should I just not wear it at all? Reason I am wearing a mouthguard is because I'm clenching. I don't want to clench that tooth but not sure if excessive pressure from the mouthguard is going to ruin the tooth in some way. Thanks!

Janice - Any root canal tooth is more brittle and fragile than any tooth that has had no root canal treatment.  For that reason, if your mouthguard was made prior to the redo of the root canal treatment, it is important for the dentist who made the guard or any dentist you might now be seeing you, to evaluate the tightness or correct fit of the guard to prevent any excess forces that could damage the tooth.

So have your dentist check the bite and the fit of the mouthguard to prevent any potential problem.

Any further questions, feel free to contact me again.


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Joel S. Teig, DMD, Diplomate ABOMS, retired


I am a board certified oral and maxillofacial surgeon and I am available to answer questions related to tooth extractions, implant insertion, facial recontruction, facial and oral tumor removal, TMJ dysfunction and various successful treatments, including surgery if all else fails, and occlusal discrepancy requiring orthognathic or jaw surgery.


Board Certified Oral and Maxillofacial Surgeon practicine for over 20 years. Assistant Clincal Professor and State University School of Dentistry.

American Dental Association, American Association of Oral and Maxillofacial Surgeons, American Board of Oral and Maxillofacial Surgeons

BA -University of Connecticut DMD - University of Pennsylvania School of Dental Medicine

Awards and Honors
National Honor Society (OKU), Philadelphia County Dental Society, Mosby Book Award, Oral Surgery Honors, Summa Cum Laude

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