Most people think of tooth damage as something sudden: a chip from a fall, or a cavity that shows up at a check-up. In fact a lot of the wear we see builds up slowly, from routines people repeat every day without a second thought.
At our Moorebank clinic, near Milperra, we spend a good part of the day explaining why teeth feel sensitive, why enamel looks thinner than it used to, or why a filling has come loose. Often the answer isn’t a lack of brushing. It’s a habit that seemed harmless.
1. Sipping soft drinks and sparkling water all day
A can of soft drink with lunch isn’t the main problem. Nursing the same drink, or a bottle of flavoured sparkling water, over several hours is. Every sip restarts the acid attack on your enamel, and saliva never gets the chance to neutralise it.
Even plain sparkling water is more acidic than still water. Enamel doesn’t grow back once it’s worn away, so if you enjoy a fizzy drink, finish it in one sitting and follow it with a glass of water.
2. Using your teeth as a tool
Ripping open a chip packet, tearing a tag off new clothes, holding bobby pins in your teeth. Enamel is strong, but biting on hard plastic or fabric puts uneven pressure exactly where a tooth is most likely to chip or crack. Keep scissors handy and the habit is easy to break.
3. Chewing ice
Ice is hard and cold, a tough combination for teeth that already have fillings, crowns or cracks you can’t see. The cold can also set off sensitive teeth. If you like something cold, drink through a straw so the ice stays out of your mouth.
4. Brushing too hard, too soon after eating
Pressing hard, especially with a medium or hard brush, wears enamel and can expose the softer dentine underneath, which often shows up as sensitivity to hot or cold. Use a soft brush and a gentle touch.
Timing matters too. Enamel is softened for a while after acidic food or drink like orange juice or vinegar dressings, so waiting around 30 minutes before brushing gives saliva time to help.
5. Grinding or clenching without realising
Grinding, called bruxism, often happens at night, so many people only find out when a partner hears it or a dentist notices the wear. It can happen during the day too, when you’re stressed or concentrating.
Over time it flattens the biting surfaces of your teeth and can cause jaw tension or headaches. If your dentist sees signs of grinding, they may suggest a night guard to protect your teeth while you sleep.
6. Snacking between meals
Grazing all day, even on foods that seem healthy like dried fruit, crackers or muesli bars, keeps your mouth in a near-constant cycle of acid. Each time you eat, plaque bacteria release acid, and your saliva needs a break between meals to bring things back to neutral. You don’t have to cut out snacks: just be mindful of how often you’re eating.
7. Biting your nails
Nail biting puts repeated pressure on the front teeth and can chip them over time. It also carries bacteria from under your nails into your mouth. Keeping nails short, or using a bitter-tasting nail polish, can help.
When a habit points to a bigger problem
Most of these habits cause gradual wear rather than sudden pain, which is why they’re easy to miss. If a tooth suddenly feels loose, you notice sharp sensitivity that wasn’t there before, or you can see a crack, have it checked soon rather than waiting.
If pain comes on suddenly, from a cracked tooth or a filling that’s come loose, call us. We prioritise dental pain and urgent cases throughout the day. See emergency dentistry.
Common questions
Can enamel damage be reversed? No. Enamel doesn’t regrow once it’s worn away, which is why prevention matters. Fluoride and good habits can help strengthen the enamel you have and slow further wear.
How do I know if I grind my teeth at night? Common signs are a sore jaw or a dull headache when you wake, or flattened edges on your front teeth. A dentist can often spot the wear at a routine check-up.
Is it too late to change a habit I’ve had for years? No. Existing wear can’t be undone, but stopping the habit now stops it getting worse.
Book a check-up
Regular check-ups make it easier to catch early wear. Book a check-up at our Moorebank or Prestons clinic, and your dentist will explain what they see and what, if anything, needs doing. See check-up and clean.
This article is general information only and doesn’t replace advice from your own dentist.