Timeline: What to Expect
6-12 months: First teeth appear (usually lower front teeth). Start brushing immediately. 12-18 months: More teeth emerge. First dental visit recommended. 2-3 years: All 20 baby teeth are usually present. 6-7 years: First permanent molars come in. First baby teeth start falling out. 6-12 years: Mixed dentition — baby and permanent teeth coexist. 12-13 years: Most permanent teeth are in (except wisdom teeth).
Brushing Basics
When to Start
Start brushing as soon as the first tooth appears. Before that, wipe gums with a clean, damp cloth after feeding.
How Much Toothpaste
- Under 3 years: A smear (grain of rice size) of fluoride toothpaste
- 3-6 years: A pea-sized amount
- 6+ years: A regular amount
Use fluoride toothpaste. Fluoride is the single most effective cavity-prevention ingredient. The amount used for young children is safe even if swallowed.
How to Brush
- Twice a day: morning and before bed (bedtime brushing is more important)
- Angle the brush at 45 degrees to the gumline
- Gentle circular motions on all surfaces: front, back, and chewing surfaces
- Don't forget the tongue
- Brush for 2 minutes (use a timer or a song)
Who Should Brush
- Under 3: Parent brushes entirely
- 3-6: Child practices, parent follows up (they lack the motor skills to brush effectively alone)
- 6-8: Child brushes with occasional parent supervision
- 8+: Independent brushing (spot-check periodically)
Common mistake: Letting a 4-year-old brush "by themselves." They don't have the fine motor coordination to reach all surfaces. They'll brush the front teeth only.
Preventing Cavities
Diet
Sugar is the primary cause of cavities. Bacteria in the mouth feed on sugar and produce acid that erodes tooth enamel.
Key strategies:
- Limit sugary snacks and drinks between meals. Frequency matters more than quantity — 5 small sugary snacks throughout the day cause more damage than one larger serving.
- Water or milk between meals, not juice or flavored drinks
- Cheese and nuts after meals can help neutralize acid
- Avoid sticky, sweet foods that cling to teeth (toffees, dried fruit, gummy vitamins)
- Don't put a baby to sleep with a milk bottle — milk sugar pools around teeth causing severe decay ("bottle caries")
Fluoride
- Use fluoride toothpaste from the first tooth
- If your water supply isn't fluoridated, discuss fluoride supplementation with your dentist
- Professional fluoride treatment at dental visits (every 6 months) adds protection
Dental Sealants
Sealants are thin protective coatings applied to the chewing surfaces of back teeth (molars), where most cavities in children occur. They're painless, quick, and reduce cavity risk by up to 80%. Ask your dentist about sealants when permanent molars come in (around ages 6 and 12).
First Dental Visit
Schedule the first visit by age 1, or within 6 months of the first tooth appearing — whichever comes first.
What to expect:
- A quick examination (often with the child on the parent's lap)
- Checking for early signs of decay
- Guidance on brushing, diet, and fluoride
- Building familiarity so future visits aren't frightening
Making dental visits positive:
- Don't use the dentist as a threat ("Brush or the dentist will drill your teeth!")
- Read books about visiting the dentist beforehand
- Stay calm — your anxiety transfers to your child
- Choose a pediatric dentist if possible — they're trained to work with children and have child-friendly offices
Common Dental Issues
Cavities
Signs: white spots on teeth (early), brown or black spots (advanced), pain, sensitivity to hot/cold/sweet.
Baby teeth cavities still need treatment — they hold space for permanent teeth and untreated decay can spread to permanent teeth forming beneath.
Thumb Sucking
Normal and self-soothing in babies and toddlers. Most children stop by ages 2-4. If it continues beyond age 4-5, it can affect tooth alignment. Talk to your dentist about gentle strategies.
Teeth Grinding (Bruxism)
Common in children, especially during sleep. Most outgrow it. If it causes wear or jaw pain, a dentist can recommend a night guard.
Dental Injuries
If a baby tooth is knocked out: don't replant it. Clean the area, apply pressure to stop bleeding, see a dentist within 24 hours.
If a permanent tooth is knocked out: find the tooth, hold it by the crown (not the root), rinse gently with milk or saline, try to place it back in the socket. If you can't, store it in milk. See a dentist within 30 minutes — time is critical for saving the tooth.
Braces and Orthodontics
An initial orthodontic assessment is recommended around age 7 — not because braces start that early, but because some issues (crossbite, severe crowding) benefit from early intervention.
Most orthodontic treatment happens between ages 10-14. Treatment typically lasts 18-24 months.
Signs your child might need orthodontic evaluation:
- Crowded, crooked, or overlapping teeth
- Difficulty biting or chewing
- Mouth breathing
- Thumb sucking beyond age 5
- Upper and lower teeth don't meet properly
- Early or late loss of baby teeth