Posted by David Chotiner
on June 02, 2026
By Dr. Dave Chotiner, DDS
Most of my patients brush their teeth twice a day. Some of them floss. And yet, many of them still get cavities. When they ask me what they're doing wrong, the answer is usually the same: it's not what they're doing — it's what they're not doing in the gaps between brushing.
Your teeth are under acid attack dozens of times per day. Every meal, every snack, every sip of coffee or juice drops the pH in your mouth below the threshold where enamel dissolves. Brushing twice a day addresses about four minutes of your waking hours. What happens during the other 15 hours and 56 minutes matters just as much.
Morning routine (2-3 minutes)
Brush before breakfast, not after
This surprises most people, but there's solid reasoning behind it. During sleep, saliva production drops to near zero. Bacteria proliferate overnight, and by morning, your mouth has a higher bacterial load than at any other time of day.
Brushing first thing removes that bacterial buildup before you eat. If you brush after breakfast, you're pushing bacteria into contact with fresh food sugars before you clean them away. And if breakfast includes anything acidic — orange juice, fruit, coffee — brushing immediately after can abrade acid-softened enamel.
Use the right technique and the right amount of time
Angle your brush at 45 degrees toward the gum line and use short, gentle strokes. Two minutes is the minimum. An electric toothbrush with a built-in timer removes more plaque than a manual brush in most studies.
Choose a toothpaste with active remineralizing ingredients
Fluoride toothpaste (at least 1,000 ppm) — fluoride integrates into enamel and forms fluorapatite, which is more acid-resistant than natural enamel.
Nano-hydroxyapatite toothpaste — deposits the same mineral your enamel is made of directly into areas of demineralization. Particularly effective for sensitivity and for children who tend to swallow toothpaste.
Spit, don't rinse. After brushing, spit out the excess toothpaste but don't rinse with water. This allows the active ingredients to continue working on your teeth for longer.
After meals (throughout the day)
This is where most people's oral care routine has a massive gap — and it's where most cavities actually develop.
Rinse with water after every meal
Immediately after eating, swish water around your mouth for a few seconds. This dilutes food sugars and acids, dislodges food particles, and helps your saliva start the pH recovery process faster. This takes five seconds and costs nothing.
Chew sugar-free gum for 20 minutes after meals
This is the single most underutilized cavity-prevention tool, and the research behind it is robust. Chewing gum after meals stimulates saliva production by 10 to 12 times the resting rate. That flood of saliva neutralizes acid, delivers minerals for remineralization, and clears debris.
If your gum also contains active ingredients — xylitol to suppress cavity-causing bacteria, and nano-hydroxyapatite to directly deposit minerals into enamel — you're stacking three cavity-prevention mechanisms on top of the saliva benefits. This is the principle behind RevitaBite: turning that between-meals gap into an active treatment window.
Floss (at least once per day)
The surfaces between your teeth account for roughly 40% of your total tooth surface area. Your toothbrush cannot reach these areas. If you don't floss, you're leaving 40% of your tooth surfaces uncleaned.
The specific time of day doesn't matter much. What matters is that you do it consistently. If you find traditional floss difficult, try floss picks, interdental brushes, or a water flosser. I'd rather a patient use floss picks imperfectly every day than use traditional floss perfectly twice a week.
Evening routine (3-5 minutes)
Floss first (if you haven't already)
If you only floss once per day, the evening is the best time. You're removing the full day's accumulation of food and plaque from between your teeth before the overnight period when saliva production drops.
Brush for two minutes
Same technique as the morning — 45-degree angle, gentle strokes, two full minutes. Pay particular attention to the gum line, the backs of your lower front teeth, and the chewing surfaces of your back molars.
Don't eat or drink after your evening brushing
After your final brushing, the only thing that should go in your mouth is water. Any food or drink introduces sugars that bacteria can feed on during the overnight period when your saliva defenses are at their lowest.
The routine, simplified
Morning: Brush 2 min with remineralizing toothpaste. Spit, don't rinse.
After meals: Rinse with water. Chew sugar-free gum (with xylitol + nano-HA) for 20 min.
Evening: Floss. Brush 2 min. Nothing but water after.
That's it. No exotic products, no complicated steps. The "secret" to cavity prevention isn't a miracle ingredient — it's closing the gaps in your routine where your teeth are unprotected and acid is winning.
FAQ
Should I brush before or after breakfast?
The evidence slightly favors brushing before breakfast. Brushing first thing removes the overnight bacterial buildup before you eat. If you prefer brushing after, wait at least 30 minutes.
How many times a day should I brush?
Twice daily — morning and evening. The between-meals gap is better addressed with water rinsing and sugar-free gum rather than additional brushing.
Is mouthwash necessary?
Mouthwash is not essential if you're brushing and flossing effectively, but an alcohol-free fluoride rinse can be useful. Avoid using mouthwash immediately after brushing, as it can wash away concentrated active ingredients from your toothpaste.
Does it matter what order I brush and floss?
Research suggests flossing before brushing may be slightly more effective. However, consistency matters far more than sequence.
How do I know if my oral care routine is working?
The best indicator is your dental checkup results. If you're going cavity-free between visits, your routine is working.
