Quick Answer: An infant pacifier has real benefits, including reducing SIDS risk, soothing pain, and helping with sleep. For breastfed babies, introduce after breastfeeding is established (around 3 to 4 weeks). Plan to wean by age 2 to avoid dental issues. Always consult your paediatrician for guidance specific to your baby.
In This Guide
Reading Time: 7 minutes
Benefits of an Infant Pacifier
The pacifier question comes up in nearly every new-parent conversation. The research is actually more clearly in favour of pacifier use than many parents expect, at least in the first year of life.
SIDS Risk Reduction
This is the benefit with the strongest evidence base. A 2005 meta-analysis published in Pediatrics by Hauck et al. analysed 7 case-control studies and found that pacifier use at last sleep was associated with a 90% reduction in SIDS odds compared to no pacifier use. The protective effect remained even after adjusting for other factors.
Several mechanisms have been proposed. Pacifier sucking may maintain the airway in a more open position, promote lighter sleep and more frequent arousal responses, or support more regular breathing. The mechanism is not definitively established, but the epidemiological association is consistent enough that the American Academy of Pediatrics and the Canadian Paediatric Society both include pacifier use as part of their safe sleep recommendations.
Soothing and Pain Relief
Infants have a strong sucking reflex, which is inherently calming. Pacifiers activate this reflex without requiring nursing. They are particularly useful during medical procedures: sucking has been shown to reduce infant pain scores during routine immunisations and blood draws, a finding replicated across multiple studies.
Sleep Onset
Many infants fall asleep more easily with a pacifier. The sucking action promotes a calm, drowsy state. The limitation is that once the pacifier falls out during deep sleep, some babies will wake and cry for it to be reinserted -- which can become a challenging habit to break. This is one reason sleep training (around 4 to 6 months) is often recommended alongside pacifier use rather than instead of it.
Risks and Downsides
| Risk | Evidence Strength | Age of Concern | Mitigation |
|---|---|---|---|
| Dental misalignment (open bite, crossbite) | Strong | After age 2 | Wean before age 2 |
| Ear infections (otitis media) | Moderate | Over 6 months | Wean at 6 to 12 months if recurrent |
| Breastfeeding interference | Mixed | Before 1 month if breastfeeding | Wait until breastfeeding established |
| Oral yeast infections (thrush) | Low | Any age | Clean pacifier regularly; replace often |
| Night waking (pacifier as sleep association) | Common but manageable | 3 to 8 months | Sleep training to reduce dependence |
Dental Development
Prolonged pacifier use -- particularly after the primary teeth have fully erupted around age 2 -- is associated with dental problems including anterior open bite (the front teeth do not close) and posterior crossbite (back teeth misalignment). The good news is that dental problems caused by pacifier use before age 2 typically correct themselves after weaning. Problems developing after age 2 are more likely to require orthodontic intervention.
Ear Infections
Studies have found that pacifier use, particularly after 6 months of age, is associated with a modestly increased risk of acute otitis media (middle ear infection). The proposed mechanism involves the sucking action altering Eustachian tube function. For babies prone to recurrent ear infections, the paediatrician may recommend weaning the pacifier earlier.
When to Introduce a Pacifier
For formula-fed babies, a pacifier can be offered from birth if desired. For breastfed babies, most paediatric organisations recommend waiting until breastfeeding is well established, generally defined as consistent milk supply and reliable latch, which typically occurs around 3 to 4 weeks after birth.
Introducing a pacifier to a breastfed newborn too early can potentially cause nipple confusion and reduce nursing frequency, which may affect milk supply. This concern is stronger in the first few weeks and diminishes after breastfeeding is reliably established.
What the Canadian Paediatric Society Says
The CPS 2021 safe sleep statement supports pacifier use as a SIDS risk reduction strategy and recommends offering a pacifier when putting infants to sleep, once breastfeeding is going well. The CPS notes that if the pacifier falls out during sleep, parents do not need to reinsert it. Pacifiers should not be coated in sweet substances, attached to strings or clips around the neck (strangulation risk), or shared between infants.
8 min read
When to Stop Using a Pacifier
The SIDS protective benefit of pacifier use applies during the highest-risk period, which is the first 6 to 12 months of life. After 12 months, the SIDS risk has decreased significantly, and the dental and ear infection risks become more relevant.
Most paediatric organisations recommend:
- Beginning weaning at 12 months
- Completing weaning before 24 months to prevent dental misalignment
- Earlier weaning (6 to 12 months) if ear infections are recurrent
Weaning tends to be easier at 6 to 12 months than at 18 to 24 months, when toddlers are more attached to comfort objects. Many families find a gradual reduction approach works well: limiting pacifier use to sleep times only, then gradually reducing duration over weeks.
Using a Pacifier for Sleep
If you offer a pacifier for sleep, a few practical points apply:
- You do not need to reinsert the pacifier if it falls out during sleep. The protective benefit for SIDS appears to be associated with offering it at sleep onset, not with continuous use throughout the night.
- Never attach a pacifier to a string, cord, or ribbon around the baby's neck or attach it to clothing with a cord. Strangulation risk is real.
- Keep the sleep area clear. The pacifier is the only item that belongs in the sleep space. No stuffed animals, blankets, or other items should be present.
- Clean and inspect pacifiers regularly. Replace them if cracked, sticky, or if the nipple shows any signs of deterioration.
Infant pacifiers can reduce SIDS risk by up to 90 percent according to some studies, but should be introduced after breastfeeding is established (typically 3 to 4 weeks) and discontinued by age 2 to prevent dental issues. Mattress Miracle at 441½ West Street in Brantford carries crib mattresses and baby sleep accessories. Dorothy notes that a firm, flat crib mattress is the single most important sleep safety purchase for new parents, more important than any accessory. Call (519) 770-0001.
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Call 519-770-0001Frequently Asked Questions
When should I introduce a pacifier to my baby?
For breastfed babies, the Canadian Paediatric Society recommends waiting until breastfeeding is well established, typically around 3 to 4 weeks of age. For formula-fed babies, a pacifier can be offered from birth. Introducing before breastfeeding is established may interfere with latching and milk supply.
Does a pacifier reduce the risk of SIDS?
Research consistently shows that pacifier use during sleep is associated with a significant reduction in SIDS risk. A 2005 meta-analysis in Pediatrics found pacifier use at last sleep was associated with a 90% reduction in SIDS odds. The American Academy of Pediatrics includes pacifier use in its SIDS reduction recommendations.
When should I wean my baby off the pacifier?
Most paediatric organisations recommend beginning pacifier weaning by 12 months and completing it before age 2. The Canadian Paediatric Society notes that pacifier use beyond 2 years increases the risk of dental misalignment. Weaning between 6 and 12 months also reduces the risk of ear infections.
Will a pacifier interfere with breastfeeding?
If introduced before breastfeeding is well established, a pacifier can potentially cause nipple confusion and reduce nursing frequency, which may affect milk supply. The standard guidance is to wait until breastfeeding is going well, around 3 to 4 weeks, before offering one. Many breastfed infants use pacifiers without any effect on breastfeeding.
Can a pacifier fall out during sleep and wake the baby?
Yes, and this is a common frustration. Pacifiers frequently fall out once a baby is in a deep sleep. Before about 6 to 7 months, most babies cannot retrieve and reinsert a pacifier themselves. For families who find this disruptive, sleep training around 4 to 6 months can reduce the baby's dependence on the pacifier as a sleep association.
Sources
- Hauck, F.R., et al. (2005). Do pacifiers reduce the risk of sudden infant death syndrome? A meta-analysis. Pediatrics, 116(5), e716-e723. doi.org/10.1542/peds.2004-2631
- Vennemann, M.M., et al. (2012). Pacifier use and the risk of sudden infant death syndrome. Pediatrics, 129(4), e854-e863. doi.org/10.1542/peds.2011-1987
- Canadian Paediatric Society. (2021). Safe sleep for your baby. Paediatrics & Child Health, 26(1), 56-57. doi.org/10.1093/pch/pxaa146
- Rovers, M.M., et al. (2008). The effect of short-term antibiotic treatment and pacifier use on recurrent acute otitis media. Clinical Infectious Diseases, 46(1), 80-87. doi.org/10.1086/523844
- Adair, S.M. (2003). Pacifier use in children: A review of recent literature. Pediatric Dentistry, 25(5), 449-458. PMID: 14649605.
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