What the product information covers
None of the US, European or Canadian documents lists a tooth or gum side effect [1][3][4]. Three listed effects can still reach the mouth.
| Listed effect | Mounjaro® | Placebo | Why it matters for teeth |
|---|---|---|---|
| Vomiting [1] | 5% / 5% / 9% | 2% | Stomach acid on tooth surfaces [7] |
| Reflux disease [1] | 1.7% / 2.5% / 1.7% | 0.4% | Acid reaching the mouth [7] |
| Delayed stomach emptying [1][3] | Pharmacological effect; EU: uncommon side effect | — | Sedation planning [1][2] |
| Dental problems [1][3][4] | Not listed | — | — |
The first large tirzepatide study on gums
A 2026 study used electronic health records from a global research network to compare adults with type 2 diabetes who started tirzepatide or a GLP-1 medicine between 2022 and 2025. After matching, each group had 97,993 people. Over one year, tirzepatide users had lower recorded rates of periodontitis (hazard ratio 0.70), tooth extraction (0.89), problems around dental implants (0.61), gum procedures (0.89) and mouth or jaw infections (0.70) [5].
Those numbers point away from harm, but the authors note that recorded event rates were low and records are not dental examinations. People who start one medicine rather than another may differ in ways that matching cannot remove. They call for prospective studies with proper dental assessments, and one author reported ties to several companies, including Lilly [5]. A 2026 narrative review similarly concludes that early evidence suggests incretin medicines may dampen gum inflammation, while effects on the jawbone remain uncertain [6].
How teeth could still be affected
- Supported by the label: vomiting and reflux are more frequent than on placebo, especially while the dose is being raised [1].
- Proposed by reviewers: reduced saliva combined with stomach acid from reflux or vomiting may make teeth more prone to erosion, though a direct link with these medicines has not been established [7]. Reviewers also link complaints popularly called “Ozempic teeth” to nausea, vomiting, belching and lower fluid intake [6].
- General dental knowledge: bacteria turn sugars and starches into acid, and frequent snacking keeps that acid on the teeth for longer [11]. Some people manage nausea with small, frequent meals, which may mean more snacking; how this balances out has not been studied for tirzepatide.
- Diabetes itself: NIH sources link diabetes with gum disease, dry mouth and thrush, a fungal infection, and say that poorly controlled blood sugar makes mouth problems more likely [8].
Other reasons teeth and gums suffer
The NIH names smoking or using tobacco as the most significant risk factor for gum disease, with older age, diabetes, genetics, stress and some illnesses and medicines also playing a part [9]. Hundreds of medicines reduce saliva, including some for blood pressure, depression and bladder control [10].
Gum disease begins with red, swollen or bleeding gums; later the gums can pull away, teeth can loosen and breath can stay bad [9]. Tooth decay often causes no symptoms until a cavity is large; then pain with sweet, hot or cold food and visible pits or dark spots are typical [11].
Dental visits while on Mounjaro®
Mounjaro® slows the stomach, so food can still be there hours after a meal. The US label reports rare cases of food or fluid entering the lungs in people on GLP-1 medicines having procedures under general anaesthesia or deep sedation, despite fasting, and asks patients to tell their providers before any planned procedure [1]. The Medication Guide says to tell all your healthcare providers [2], and Canada asks clinicians to weigh benefits and risks before such procedures [4]. That applies to sedation for dental surgery too. How to prepare is the dentist’s and prescriber’s decision; the label says the evidence is not yet enough to set rules on fasting or pausing the medicine [1].
If you also take insulin or a sulfonylurea, fasting before a procedure can affect blood sugar [1]. Mention all your diabetes medicines when you book.
Protecting your teeth
The Mounjaro® documents do not give dental advice. NIH and MedlinePlus sources suggest the following.
- Brush at least twice a day and floss daily, and keep regular professional cleanings [8][11].
- Tell your dentist you have diabetes and which medicines you use [8].
- Use fluoride toothpaste; your dentist may also apply fluoride [11].
- Eat sticky or sugary foods with meals rather than as snacks, and avoid constant sipping of sugary drinks [11].
- For a dry mouth, sip water through the day and limit caffeine, tobacco and alcohol; sugarless gum can stimulate saliva [10].
- If you smoke, your doctor or dentist can help you quit [8].
Mounjaro® is a registered trademark of Eli Lilly and Company. PepLabo is not affiliated with or endorsed by Eli Lilly and Company.
When to get help
The signs and contact information below come from this article’s sourced guidance.
Today
- Repeated vomiting or vomiting that does not stop
Contact: Your healthcare provider right away
Medication Guide [2]
At your next appointment
- Dryness, soreness, white patches or a bad taste in the mouth, with diabetes
Contact: Your dentist
NIH [8]
- Planned dental surgery or treatment under sedation
Contact: Tell your dentist and prescriber that you take Mounjaro®
- Gums that bleed, look swollen or pull back, loose teeth or lasting bad breath
Contact: Your dentist
- Tooth pain, sensitivity or dark spots on teeth
Contact: Your dentist
MedlinePlus [11]