Halloween falls on a Saturday this year, which means a full evening of trick-or-treating and a candy bag that will be around the house for weeks. The good news: you do not have to ban candy to protect your kids’ teeth. A few simple habits make a much bigger difference than how many treats end up in the bag.

Why candy causes cavities (and why timing matters more than amount)

Bacteria in the mouth feed on sugar and produce acid. That acid softens tooth enamel for roughly 20 to 30 minutes after each snack, until saliva neutralizes it and the enamel starts to recover. Every time a child eats something sugary, the clock starts again.

That is why the pattern matters more than the total. Ten pieces of candy eaten together after dinner means one acid attack. The same ten pieces eaten one at a time over an afternoon means ten. Grazing on candy all day is the habit that does the most damage.

Not all candy is equal

Easier on teeth: plain chocolate, which melts and rinses away relatively quickly, and sugar-free gum, which actually helps by increasing saliva.

Harder on teeth:

• Sticky and chewy candy like caramels, taffy and gummies, which cling to the grooves of the back teeth for hours.
• Hard candy and lollipops, which bathe the teeth in sugar for as long as they last, and can crack a tooth if bitten.
• Sour candy, which combines sugar with acid, so it softens enamel twice over.

Five habits that protect teeth through Halloween

1. Treats with meals, not between them. Saliva production is higher during a meal, which helps wash sugar away. Dessert after dinner beats a candy bowl on the counter.

2. Water after candy. A few sips of water rinses sugar and acid off the teeth. Tap water in London is fluoridated, which is a small bonus.

3. Wait before brushing after sour candy. Enamel is softened right after something acidic. Rinse with water and wait about 30 minutes before brushing.

4. Brush twice a day with fluoride toothpaste, and floss. Bedtime brushing matters most. For children under three, a smear the size of a grain of rice; for ages three to six, a pea-sized amount.

5. Pick a keep pile. Let your child choose their favourites and let the rest go. Some families trade the extras for a small toy or an outing. Nobody needs a candy stash until Easter.

Braces, Invisalign and Halloween

If your child or teen has braces, skip the hard and sticky candy completely. Caramels, taffy, nuts and hard candy can bend wires and pop brackets loose, which means an extra visit. Soft chocolate is the safer choice.

Aligners like Invisalign must come out for anything except water. Eat the treat, rinse or brush, then put the aligners back in. Snacking with aligners in traps sugar right against the teeth.

Signs it is time for a checkup

• Your child mentions a tooth that hurts when eating something sweet or cold.
• You see a white chalky spot or a brown spot on a tooth.
• Gums bleed when your child brushes.
• It has been more than six months since their last cleaning.

Early cavities in children can often be treated simply when they are caught early. Regular checkups are what make that possible. Here is what happens at a children’s cleaning and checkup.

Frequently asked questions

What is the worst Halloween candy for teeth?

Sticky, chewy and sour candies, because they stay on the teeth longest or add acid on top of sugar. Hard candy is also risky because kids can crack a tooth biting down on it.

Is chocolate bad for teeth?

Chocolate still contains sugar, but it rinses off teeth more easily than sticky candy. Plain chocolate eaten with or after a meal is one of the better choices.

Should my child brush right after eating candy?

After most candy, brushing is fine. After sour or acidic candy, rinse with water and wait about 30 minutes, because enamel is temporarily softened.

Is my child covered for a checkup under the CDCP?

If your family does not have access to dental insurance and qualifies for the Canadian Dental Care Plan, preventive care like checkups and cleanings is covered. Longo Dentistry bills CDCP directly. Our CDCP guide explains who qualifies.

Book a family checkup

Longo Dentistry sees children and families at 1221 Dundas Street, Unit 1, in Old East Village, with Saturday appointments and one weekday evening. Call (519) 455-1221 or book online. Happy Halloween from the team.