Ask about pacifiers in any parenting group and you’ll get forty replies, half of them certain it’s the best thing they ever did and half certain it’ll wreck their child’s teeth. Somewhere in the middle is you, holding a screaming baby in a car seat at 7pm, wondering whether you’re about to make a mistake.
One thing makes all of it click: “are pacifiers good or bad” is the wrong question. The evidence doesn’t point one way. It points one way for a two-month-old and the opposite way for a three-year-old, and almost every argument you’ve heard is somebody quoting the correct answer for the wrong age.
So this guide is organised by age, because that’s what determines the answer.
Table of Contents
What the evidence says at each age
| Age | Where the evidence points | Why |
|---|---|---|
| Birth – 4 weeks (breastfed babies) |
Wait, if you can | Standard guidance is to let breastfeeding establish first, usually around four weeks. Formula-fed babies don’t need to wait. |
| 4 weeks – 6 months | Clearly favourable | This is the peak window for sudden infant death, and pacifier use at sleep is associated with a substantially lower risk. Soothing benefits are real. Risks at this age are minimal. |
| 6 – 12 months | Still fine, start thinking about the exit | SIDS risk has dropped a lot. Ear infection risk starts to climb. Many babies drop it themselves around here. |
| 12 – 24 months | Diminishing returns | The protective reason is gone. Dental effects begin accumulating. Most guidance says aim to be finished by two. |
| Past 3 years | This is where real harm shows up | Bite problems rise steeply and become much less likely to correct themselves. |
If you take nothing else: the early months are the part where a pacifier does you the most good, and the part after two is where it starts costing you. Nearly all the horror stories come from the second half.
How pacifiers are linked to lower SIDS risk
This is the single most important thing about pacifiers, and it’s astonishing how often it gets left out of the pros-and-cons lists.
A meta-analysis published in Pediatrics pooled seven case-control studies and found that a pacifier used during the last sleep was associated with an odds ratio of 0.39, roughly a 60% lower risk of sudden infant death. This is why the American Academy of Pediatrics recommends offering a pacifier at naptime and bedtime as part of safe sleep.
Now for the context, because a scary-sounding percentage deserves it. The same analysis calculated how many babies would need to use a pacifier at sleep to prevent one death: about 2,733. Sudden infant death is rare to begin with, so a 60% reduction of a small number is still a small number.
That cuts both ways, and you should hear both. If you’re using a pacifier, you’re doing something sensible and evidence-backed. If your baby spits it out every single time, and plenty do, you haven’t failed at anything and your baby isn’t in danger. Safe sleep is mostly about the big things: on the back, on a firm flat surface, in your room, nothing loose in the cot, no smoking. The pacifier is a modest bonus on top of those, not a substitute for them.
Practical points from safe-sleep guidance that surprise people:
- If it falls out while they’re asleep, leave it. You don’t need to creep in and put it back. Really.
- Offer it for every sleep, not now and then. The association is with consistent use at sleep; occasional use is the version that doesn’t appear to help.
- Never force it. If your baby refuses, that’s a complete answer. Don’t hold it in, and don’t put anything sweet on it to persuade them.
Does it ruin breastfeeding? The evidence points the other way
This is the fear that stops most parents, and it deserves a careful answer, because the picture is more interesting than either camp admits.
A Cochrane review looked at trials covering 1,302 healthy full-term breastfed babies and found no significant difference in the proportion still breastfeeding at three and four months between babies given pacifiers and babies not given them. Moderate-quality evidence, in motivated mothers.
The more striking finding is what the reviewers concluded about cause and effect. When the data were analysed by randomised allocation, the pattern suggested that pacifier use is a marker of breastfeeding difficulties, not a cause of them. In other words: the reason pacifier use and early weaning appear together in observational studies is largely that struggling mothers reach for pacifiers, not that pacifiers created the struggle.
That reframes a lot of guilt. If breastfeeding is going badly and you introduced a pacifier, the pacifier is probably not why.
But Singapore hospitals will tell you to wait, and that isn’t a contradiction
You may well be told in hospital here to avoid artificial teats and pacifiers until breastfeeding is established. That’s the Baby-Friendly Hospital Initiative standard, which Singapore’s public hospitals follow, and it’s also the guidance on HealthHub.
Both things are true at once. The Baby-Friendly guidance is a population-level policy aimed at protecting the establishment of breastfeeding in the very first weeks, when a baby is still learning to latch and a mother’s supply is still being set. The Cochrane evidence is about what happens to breastfeeding duration after that point. They’re answering different questions.
The practical version most guidance converges on: if you’re breastfeeding, wait until it’s going well, commonly around four weeks, then use one freely if it helps. If you’re formula feeding, there’s nothing to wait for.
This matches what parents here do. Asked when they introduced a pacifier, 70% of 1,607 theAsianparent Singapore readers said one month (poll), with 13% at two months. That lines up almost exactly with the wait-until-breastfeeding-is-established advice.
The risks, and when each one starts
Every risk on this list is real. Every one of them is also a function of how long you keep going, not of using a pacifier at all. That distinction is the whole ballgame.
Teeth and bite, the risk with the strongest evidence
The numbers here are stark and they make the timeline obvious. Among children who used a pacifier and stopped before three, anterior open bite, where the front teeth don’t meet, was found in about 18.8%. Among those who carried on past three, it was 65.1%.
Use beyond 18 months has also been associated with a rise in open bite from 9.3% to 13.8%, and use of a year or more with increased risk of posterior crossbite.
And here’s the reassuring half, which rarely gets said: an open bite caused by a pacifier generally improves on its own once the habit stops, if it stops before about three. The jaw is still developing and it self-corrects. Past that point, correction becomes much less likely and you’re heading towards orthodontics.
So the dental argument isn’t “pacifiers wreck teeth.” It is “pacifiers past three wreck teeth, and before three the damage largely undoes itself.”
Ear infections, a modest effect that grows with age
A systematic review found pacifier users were about 1.17 times more likely to have otitis media and 1.54 times more likely to have acute otitis media. The authors rated the certainty of this evidence as very low, which should be said plainly.
The age pattern tells you more than the headline. In one study, among children under two, repeated ear infections occurred in 29.5% of pacifier users versus 20.6% of non-users. Among children aged two to three, the gap widened sharply: 30.6% versus 13.2%.
Same story as the teeth. Small effect early, bigger effect later.
Speech delays are often claimed but weakly evidenced
You’ll read that pacifiers delay speech. Be sceptical of how confidently this is usually stated. The evidence is mixed and heavily confounded, and the mechanism usually offered, that a baby can’t talk with something in their mouth, is obviously true but isn’t the same as showing a delay in development.
The sensible version: if a pacifier is in your toddler’s mouth all day while they’re awake, that’s something to change, for the straightforward reason that they need their mouth free to babble and practise. That’s a good reason to limit daytime use in a talking-age child. It isn’t a good reason to refuse a pacifier to a six-week-old.
Weight and growth, where the claim may be reversed
Older articles sometimes warn that pacifiers cause poor weight gain by tiring babies out or displacing feeds. For healthy term babies this isn’t well supported, and a 2024 study in Pediatric Research in fact noted an association in the opposite direction, with excessive weight gain.
The real version of this concern is narrow and deserves respect: don’t use a pacifier to push out or delay a feed. In the newborn weeks, when weight gain and supply are both being established, offer the feed first. A pacifier is for a baby who has been fed and still wants to suck.
Most pacifiers fail a bite test
This is the section that changed how we’d shop for one.
Consumer Reports tested 20 pacifiers. Only three didn’t break under the maximum force applied in bite testing. A pacifier that comes apart in a baby’s mouth is a choking hazard, and this isn’t a rare manufacturing fluke: on that testing, it was the norm.
For scale, the US Consumer Product Safety Commission logged 178 pacifier-related incidents between 2014 and 2024: fewer than 18 a year, including 62 injuries and one death. Small numbers, but they deserve ten seconds of attention.
The safety rules to follow
- Never attach a pacifier to a cord, ribbon, string, chain or anything around your baby’s neck. This is a strangulation risk and it’s prohibited in the US for pacifiers sold with such attachments. If you use a clip, keep it short, under about 20cm, and never use one in the cot.
- Buy one-piece. A moulded single-piece pacifier has nothing to separate into a choking hazard.
- Do the pull test, often. Tug the teat firmly before use. Check for cracks, stickiness, tears, swelling or discolouration. If in any doubt, bin it: they cost a couple of dollars.
- Replace on a schedule, not when it looks bad. Follow the manufacturer’s expiry guidance; every one to two months is a common recommendation.
- Skip the decorated ones. Rhinestones, crystals and glued-on ornaments have been recalled before for exactly the reason you’d guess.
- Sterilise until six months, by boiling or with a steriliser, then soap and hot water is enough once your baby is putting everything else in their mouth anyway.
- Never dip it in anything. Not sugar, not jam, not condensed milk, and above all not honey. Honey can cause infant botulism and shouldn’t be given to any baby under one, in any form.
Two more things to know: buy the size marked for your baby’s age, and don’t clean it by sucking it yourself, which mainly transfers your mouth bacteria to your baby.
If you want the shopping side of this, we have a separate guide to choosing a pacifier and which brands to consider, and one on pacifier parts and safety checks.
If your baby wants nothing to do with it
This is extremely common and almost nobody writes about it, so: your baby refusing a pacifier is normal, it isn’t a problem you need to solve, and you haven’t deprived them of anything meaningful.
Things that sometimes help, if you’d like a soothing tool in the kit:
- Try a different shape. Babies are wildly particular. A baby who spits out a round teat may take an orthodontic flat one, or vice versa. Buying one of each shape is cheaper than buying six of the same.
- Try when they’re calm and drowsy, not mid-meltdown.
- Hold it gently in place for a moment while they work out what it is, but stop the second they turn away.
- Give up gracefully. Some babies simply prefer fingers, or you. Neither is a failure.
One consolation if yours refuses: you never have to do the weaning. Parents in the thick of that would trade places with you.
Where to get them
Since the advice above is to try a couple of shapes instead of six of the same one, it helps that these come in small packs. All are one-piece designs.
- BIBS Studio Colour, 2-pack: a rounded teat, and the shape most babies are offered first.
- Frigg Daisy silicone and Frigg Little Viking: sold singly, so a cheap way to test a second shape.
- Philips Avent Ultra Air: a different teat and shield again, with a more open shield if your baby gets damp skin around the mouth.
- BIBS x Moomin, 2-pack: same teat as the Studio Colour.
There’s also a BIBS clip loop. Remember the rule from above before you use one: on clothing during the day only, short, and never in the cot or anywhere near your baby’s neck.
Motherswork is theAsianparent’s retail partner in Singapore. We only feature things that match the advice above.
When and how to stop
Guidance varies more than you’d expect, so here it’s side by side instead of pretending there’s one answer.
| Source | Suggested stopping point |
|---|---|
| Lullaby Trust (safe sleep charity) | Between 6 and 12 months |
| Pediatrics SIDS meta-analysis | Up to 1 year: covers the peak SIDS window |
| Common paediatric and dental guidance | By 2 years |
| The dental evidence | Before 3 is where it self-corrects |
A reasonable reading: aim for somewhere between one and two years, and treat three as the line you don’t want to cross. If your child is 2 years and 4 months and still attached to it, you aren’t in crisis. You have time, and you should use it.
Look at how scattered the answers are. Asked at what age a pacifier used for sleep should be taken away, 1,193 theAsianparent Singapore readers split almost evenly across the options (poll): 32% said 0–3 months, 25% said 6–9 months, 20% said 9–12 months, and only 16% said 1–2 years.
Which is striking, because the guidance points to the far end that almost nobody picked. Nearly six in ten would stop before nine months, and the 32% choosing 0–3 months would be giving up the protective window at exactly the age it counts for most.
How to do it
- Sleep only, first. Retire it from the car, the pram and the shopping trip before you touch bedtime. Bedtime is the hardest and should be last.
- Cold turkey works well for many toddlers, and is often over in three or four days. Plan it for a calm week, not alongside starting childcare, a new sibling, a house move or a holiday.
- Give it a story. Posting them to a new baby, leaving them out for a favourite character, or trading them at the shop for a chosen toy. Older toddlers take ceremony seriously.
- Expect two or three rough nights, then it’s usually done. The dread is generally worse than the event.
- Don’t restart at the first hard night. Stopping and restarting teaches your child that enough protest brings it back, and makes the next attempt harder.
Please don’t cut or pierce the teat. This trick circulates widely online: snip the tip so the suck stops working and the child gives up. Every major pacifier manufacturer advises against it, and so do paediatric dentists, for a simple reason: a cut or pierced teat can tear further and release a piece into your child’s mouth. You’d be deliberately creating the exact failure mode that the bite testing above is designed to catch.
It works. It’s also the one weaning method with a choking risk attached. Use any of the others.
The other conversation is with your mother-in-law
In a lot of Singaporean households the pacifier debate isn’t really between you and the evidence. It’s between you and a grandparent or a confinement nanny who has firm views and much more confidence than you currently have.
The objections are usually that it’ll ruin the child’s teeth, that it’ll become a habit they never break, or that a baby soothed by a dummy is a baby not being properly attended to. The first two are legitimate concerns about the wrong age bracket: both are about prolonged use, and both are answered by having a plan to stop. The third is a values disagreement, not a factual one.
What tends to work better than debating is naming the plan out loud: we’re using it for sleep, and we’re stopping before he turns two. Most of the objection is really a fear that there’s no plan. And remember that the strongest evidence in favour, the safe sleep link, is the piece the previous generation didn’t have, because the research came later.
Frequently asked questions
Are pacifiers bad for babies?
Not in the early months, where the evidence is favourable: pacifier use at sleep is associated with roughly a 60% lower risk of sudden infant death, and it’s a legitimate soothing tool. The risks are almost entirely about prolonged use. Dental and ear infection problems rise with age and duration, becoming significant past two and pronounced past three. The question isn’t whether to use one but when to stop.
When should my baby stop using a pacifier?
Guidance ranges from 6–12 months to by age two. A reasonable target is between one and two years, with three as a firm outer limit. Bite problems caused by a pacifier generally correct themselves if the habit stops before about three, but become much less likely to resolve after that. Retire daytime use first and keep sleep for last.
Do pacifiers cause nipple confusion or ruin breastfeeding?
A Cochrane review of 1,302 breastfed term infants found no significant difference in breastfeeding rates at three and four months between babies given pacifiers and those not. The reviewers concluded pacifier use appears to be a marker of existing breastfeeding difficulties rather than a cause of early weaning. Singapore’s Baby-Friendly hospitals still advise waiting until breastfeeding is established, usually around four weeks, which is sensible for the first weeks specifically.
Should I put the pacifier back in if it falls out while my baby sleeps?
No. Safe sleep guidance is explicit that if the pacifier falls out during sleep, there’s no need to replace it. Offer it when you put your baby down, then leave it. Don’t attach it to your baby’s clothing or to the cot, and never use a cord or neck strap.
Do pacifiers cause speech delay?
The evidence is mixed and much weaker than the claim’s popularity suggests. The reasonable concern applies to a talking-age toddler with a pacifier in their mouth throughout the day, who needs their mouth free to babble and practise sounds. Limiting daytime use once your child is forming words is sensible. It isn’t a reason to avoid pacifiers in infancy.
Are pacifiers or thumb sucking worse?
Most guidance considers a pacifier the more manageable of the two, for the practical reason that a pacifier can be taken away and a thumb can’t. Comparative dental evidence is less one-sided than that framing suggests: pacifier sucking carries a notably higher risk of posterior crossbite than digit sucking, while open bite risk is similar between the two.
How often should I replace a pacifier?
Follow the manufacturer’s guidance, commonly every one to two months, and replace immediately at any sign of cracking, stickiness, tearing, swelling or discolouration. Pull the teat firmly before each use. Consumer Reports testing found only three of 20 pacifiers survived their maximum-force bite test, so damage isn’t unusual and inspection matters.
Can I cut a hole in the pacifier to help my child give it up?
No. Although this method circulates widely and does work, cutting or piercing the teat can cause it to tear further and release a fragment into your child’s mouth, creating a choking hazard. Manufacturers and paediatric dentists advise against it. Use gradual withdrawal, a cold-turkey week or a giving-away ritual instead.
Is it safe to dip a pacifier in honey to get my baby to take it?
No. Honey mustn’t be given to babies under one year in any form because of the risk of infant botulism. Nothing sweet should go on a pacifier at any age, it also causes tooth decay. If your baby won’t take a pacifier without persuasion, that’s a sign to stop offering it.
What it all comes down to
For a baby under six months, a pacifier is a reasonable, evidence-supported thing to use, and its association with lower sudden infant death risk is the best argument anyone has for it. The breastfeeding fear is largely backwards. The dental and ear risks are real but are about duration, not use.
Use it if it helps. Offer it at sleep, not all day. Check it for damage and never put it on a cord. Aim to be finished between one and two, and treat three as the line.
And if your baby takes one look at it and spits it across the room, that’s fine too. That was never the thing holding your parenting together.
Read next
- How to Choose a Pacifier, and the Brands Worth Considering
- Pacifier Safety: The Parts, the Checks and the Hazards
- The Sucking Reflex: Why Babies Need to Suck
- Is Thumb Sucking Bad? Tips to Help Your Child Stop
- Ear Infections in Children: What Parents Need to Know
Sources
- Hauck FR et al. Do pacifiers reduce the risk of sudden infant death syndrome? A meta-analysis. Pediatrics, 2005.
- Jaafar SH et al. Effect of restricted pacifier use in breastfeeding term infants for increasing duration of breastfeeding. Cochrane Database of Systematic Reviews, 2016.
- The who, when, and why of pacifier use. Pediatric Research, 2024.
- How Safe Is Your Baby’s Pacifier?, Consumer Reports.
- Dummies, The Lullaby Trust.
- Sleep-Related Infant Deaths: Updated 2022 Recommendations, American Academy of Pediatrics.
- Baby Friendly Hospital Initiative, HealthHub, Singapore.
- Pacifiers (soothers): A user’s guide for parents. Canadian Paediatric Society.
This article is general information and not a substitute for medical advice. If you’ve concerns about your baby’s feeding, weight, sleep, hearing or teeth, speak to your paediatrician, a lactation consultant or your dentist. They can see your child, and we can’t.