How Long Does Teething Last?
Quick Answer
3–7 days per tooth, with the full teething process lasting from about 6 months to age 3. Most babies get their first tooth around 6 months and have all 20 primary teeth by 30–33 months.
Typical Duration
Quick Answer
6 months to about age 3 for the full teething process. Each individual tooth typically causes discomfort for 3–7 days — a few days before it breaks through the gum and a day or two after. Since babies get 20 primary teeth in waves, teething is not one continuous event but a series of episodes spread over roughly two years.
Teething Timeline by Tooth
| Tooth | Typical Eruption Age | Notes |
|---|---|---|
| Lower central incisors | 6–10 months | Usually the first to appear |
| Upper central incisors | 8–12 months | The classic "baby smile" teeth |
| Upper lateral incisors | 9–13 months | Flanking the front teeth |
| Lower lateral incisors | 10–16 months | Complete the bottom front row |
| First molars (upper & lower) | 13–19 months | Larger surface = more discomfort |
| Canines (upper & lower) | 16–23 months | Sharp, pointed teeth |
| Second molars (upper & lower) | 23–33 months | Last and often most painful |
Source: American Dental Association eruption chart.
How Long Each Episode Lasts
Parents often assume teething goes on for months at a time, but research suggests the active discomfort window per tooth is quite short:
- Before eruption: 2–4 days of gum soreness, increased drooling, and fussiness
- Eruption day: The tooth breaks through the gum surface
- After eruption: 1–3 days of residual sensitivity
So each teething episode lasts roughly 3–7 days total. The reason it can feel endless is that teeth often come in pairs or clusters, creating overlapping episodes.
Common Teething Symptoms
The American Academy of Pediatrics recognizes these as legitimate teething symptoms:
- Drooling — often heavy, can cause a chin rash
- Gum swelling and tenderness — gums may appear red or puffy
- Irritability and fussiness — especially in the days before eruption
- Biting and chewing on fingers, toys, and anything in reach
- Sleep disruption — discomfort can wake babies at night
- Decreased appetite — sore gums make feeding uncomfortable
- Ear pulling — referred pain from the gums can cause ear rubbing
What Teething Does NOT Cause
Contrary to popular belief, teething does not cause high fever (over 100.4 degrees F / 38 degrees C), diarrhea, or rashes on the body. A 2016 study in Pediatrics confirmed that while mild temperature elevation can occur, true fever is not a teething symptom. If your baby has a fever above 100.4 degrees F, consult your pediatrician.
Teething Relief Methods
Recommended
- Chilled teething rings — cold (not frozen) rings numb the gums and provide counter-pressure. Refrigerate, don't freeze, to avoid injuring gums.
- Gum massage — gently rub the baby's gums with a clean finger or damp gauze
- Cold washcloth — wet a clean washcloth, chill it in the fridge, and let the baby chew on it
- Solid teething toys — BPA-free silicone or rubber teethers
- Acetaminophen or ibuprofen — for babies over 6 months (ibuprofen) or 2 months (acetaminophen), per your pediatrician's dosing instructions
Not Recommended
- Teething gels with benzocaine (Orajel) — the FDA warns against use in children under 2 due to risk of methemoglobinemia
- Homeopathic teething tablets — FDA issued warnings after adverse events linked to inconsistent belladonna levels
- Amber teething necklaces — pose strangulation and choking hazards with no proven benefit
- Frozen teething rings — too hard and can bruise or damage sensitive gums
When to See a Pediatrician or Dentist
- No teeth by 12 months of age
- Fever above 100.4 degrees F (38 degrees C)
- Symptoms lasting more than 10 days per episode
- Excessive bleeding from the gums
- Pus or signs of infection around an erupting tooth
- Refusal to eat or drink for more than 24 hours
The American Academy of Pediatric Dentistry recommends a first dental visit by age 1 or within 6 months of the first tooth appearing, whichever comes first.
Tips for Parents
- Track the pattern — knowing which teeth are next helps you anticipate fussy periods
- Expect molars to be worse — the broad, flat surface of molars means more gum disruption than the thin front teeth
- Night wakings are temporary — sleep disruption from teething usually resolves within a few days of the tooth breaking through
- Keep drool at bay — frequent bib changes and barrier cream on the chin prevent drool rash