Most people call us when something hurts. By that point, I usually have more work to do than I would have six months earlier. These five warning signs mean don’t wait for your next scheduled cleaning — call us now.

1. Tooth Sensitivity That Lingers

There’s a meaningful difference between a brief wince when you drink ice water and sensitivity that lasts 10, 20, 30 seconds. The brief kind is usually enamel erosion or minor gum recession — worth monitoring, but not an emergency. The kind that lingers, or that hits when you bite down, is your tooth signaling structural damage: a crack, decay approaching the nerve, or a failing old filling.

I’ve seen patients chalk this up to “sensitive teeth” for months, then come in needing a root canal that could have been a simple filling if they’d called when it started. If sensitivity lasts more than a few seconds, or shows up with heat instead of cold, please don’t wait.

2. Gums That Bleed When You Brush

Healthy gum tissue does not bleed from a toothbrush. I know this is normalized — patients tell me all the time that their gums “always bleed a little” — but it shouldn’t. When I see regular bleeding, I’m looking at the stage of gum disease, because that’s almost always the cause.

The good news: caught early, gingivitis is completely reversible with a professional cleaning and improved home care. Left untreated, it progresses to periodontitis — which causes bone loss, loose teeth, and eventually tooth loss that can’t be undone. If your gums bleed regularly, come in before your next scheduled appointment. Don’t wait six months on this one.

3. Persistent Bad Breath

Morning breath is bacteria that accumulated overnight — normal. What concerns me is halitosis that doesn’t improve after brushing, or that keeps returning despite good hygiene. That pattern almost always has a clinical source: active tooth decay, gum disease, a dying nerve inside a tooth, dry mouth, or an abscess forming somewhere you can’t see.

Mouthwash masks the symptom. It doesn’t address the cause. If the problem keeps coming back, let me find the source.

4. Any Toothache — Even a Mild One

Healthy teeth don’t ache. I tell patients this regularly and I mean it literally: if a tooth throbs, aches unprovoked, or is sensitive to biting pressure — something is wrong. It may be decay that’s reached the pulp, a cracked tooth, or an abscess forming at the root. None of these resolve on their own, and all of them become more complicated to treat the longer they’re ignored.

If you have a toothache right now, we see dental emergencies — call us today, not at your next convenience.

5. A Mouth Sore That Won’t Heal

Canker sores hurt and are annoying, but they resolve within about two weeks. Any sore, white patch, red patch, or lump that’s been there longer than that needs to be evaluated. I’m not trying to alarm anyone — the vast majority turn out to be benign irritation — but oral cancer screening is part of every exam I perform precisely because early detection makes an enormous difference in outcomes. Two weeks is the threshold. Don’t let it go past that.

A Note on Preventive Care

The patients who fare best over their lifetime are the ones who treat the dentist as a partner rather than a last resort. A professional cleaning every six months isn’t just about clean teeth — it’s a systematic check of every surface for decay, every area of gum tissue for disease, every restoration for failure, and your entire oral cavity for anything that shouldn’t be there. If it’s been a while, there’s no lecture waiting. Just a cleaning, an honest assessment, and a plan.

And if you’re building better habits at home, read our guide on the daily routine that actually makes a difference.