Epstein pearls are tiny, white or yellowish bumps that appear inside a newborn’s mouth, almost always along the roof. They are among the most common findings in infant oral exams, showing up in roughly half to nearly nine out of ten newborns depending on the population studied. They require no treatment, cause no pain, and disappear on their own within the first few weeks to months of life. Yet the sight of unexplained bumps inside a baby’s mouth understandably alarms many new parents, so understanding what these little cysts actually are and what they are not is worth a closer look.
What They Look Like and Where to Find Them
Epstein pearls are small, firm, whitish-yellow nodules, usually between one and three millimeters across. They sit on the hard palate, which is the bony front portion of the roof of the mouth. Most appear clustered along the midpalatal raphe, the seam that runs down the center of the palate where the two halves of the roof of the mouth fused during development. One study from Ecuador found that about 43% of affected newborns had them along the midline, while about 7% had them in off-midline locations on the palate.1PubMed Central. The Prevalence of Oral Anomalies Among Healthy Newborns at a Gynecological Obstetric Hospital in Quito, Ecuador: An Observational, Cross-Sectional Study – Section: Results A case report documented four small cysts on the left lateral hard palate in one infant, showing that the location can vary slightly from baby to baby.2PubMed Central. An Unusual Case of Bilateral Upper and Lower Oral Cavity Cysts in a Newborn – Section: Case presentation
You can usually see them by gently opening the baby’s mouth and looking up at the palate under good light. Clinical exams in research settings typically use nothing more than a gloved finger, a headlamp, and an external ruler to identify and measure them.3Medical Principles and Practice. Oral Findings in Newborn Children in and around Mangalore, Karnataka State, India The bumps feel smooth and are not tender to the touch. They do not bleed, ooze, or change color over time.
How Common Are They
Epstein pearls are one of the most frequently observed normal findings in newborns. Prevalence figures vary across studies, partly because of differences in populations, examination timing, and how carefully the oral cavity is inspected. A large study examining over 1,000 Turkish newborns found Epstein pearls in about 66% of them.4PubMed Central. Oral findings and its association with prenatal and perinatal factors in newborns – Section: Results A study in Ecuador reported a prevalence of roughly 50%.5PubMed Central. The Prevalence of Oral Anomalies Among Healthy Newborns at a Gynecological Obstetric Hospital in Quito, Ecuador: An Observational, Cross-Sectional Study – Section: Results An Indian study placed the figure as high as 89%.6PubMed Central. A cross-sectional prospective study of cutaneous lesions in newborn – Section: Results Another Indian study recorded them in about 38% of neonates.7PubMed Central. Assessment of Intraoral Findings of Neonates, Born in and around Meerut City A Brazilian study found them in about 40% of newborns.8Journal of Dentistry for Children. Prevalence of Oral Inclusion Cysts in a Brazilian Neonatal Population
The wide range, from about 40% to nearly 90%, likely reflects how thoroughly each study examined the oral cavity and how soon after birth the exam took place. Some pearls are extremely small and easy to miss if the examiner does not look carefully at the midpalatal raphe. The takeaway is that whether you use the conservative or the higher estimates, Epstein pearls are a normal feature of newborn anatomy that appears in at least a third and possibly the vast majority of all babies.
What They Are Made Of
Epstein pearls form from bits of epithelial tissue that get trapped during fetal development. As the two palatal shelves grow toward each other and fuse to form the roof of the mouth, small nests of surface cells can become enclosed within the seam. These trapped cells continue doing what surface cells do: they produce keratin, the same protein that makes up hair and the outer layer of skin. The result is a tiny cyst lined with a thin wall of squamous epithelium, usually just two to three cell layers thick, with the interior filled with keratin and shed epithelial cells.9PubMed Central. Unusual symptomatic inclusion cysts in a newborn: a case report – Section: INTRODUCTION
Think of them as microscopic pockets of skin that wound up on the wrong side of the surface. Because they are sealed off, the keratin has nowhere to go, so the cyst slowly fills up until it becomes visible as a tiny white dot. They are not infections, not tumors, and not pus-filled. The white or yellow appearance comes entirely from the keratin debris inside.
Do They Affect Feeding or Tooth Development
One of the first concerns parents raise is whether these bumps will interfere with breastfeeding or bottle-feeding. The evidence is reassuring. A prospective study that followed infants through their first year of life found that oral inclusion cysts, including Epstein pearls, had no measurable impact on breastfeeding in the first hour after birth or at 30 days of age. The same study found no association between the presence of these cysts and the timing of tooth eruption.10PubMed. Oral inclusion cysts: a prospective cohort study on distribution, associated factors and prognosis in the first year of life – Section: RESULTS
This makes sense given the size and location of the cysts. They sit on the hard palate, away from the gum ridges where the baby latches during feeding and away from the sites where teeth eventually erupt. Unless a baby happens to have an unusually large or oddly positioned cyst, there is no physical mechanism by which these tiny keratin-filled bumps would obstruct suction or cause discomfort during nursing.
How They Resolve
Epstein pearls are self-limiting. As the infant’s mouth grows and the overlying tissue matures, the thin cyst wall breaks down, releases its keratin contents onto the surface, and the bump flattens and disappears. For most babies this happens within a few weeks, though some pearls persist for a few months. A case report following an infant with neonatal oral cysts documented full spontaneous resolution by the four-month follow-up visit.11Contemporary Clinical Dentistry. Bilateral Dental Lamina Cysts of the Newborn: A Rare Case Report with Atypical Mandibular Location and Spontaneous Resolution – Section: Abstract
No lancing, draining, or topical treatment is needed. Attempting to pop or scrape them can injure the delicate palatal tissue and introduce bacteria into a newborn’s mouth. Clinical guidelines consistently emphasize that the correct management is reassurance and observation, not intervention.12BMJ Case Reports. Dental lamina cysts in a newborn infant
How to Tell Them Apart from Bohn’s Nodules and Dental Lamina Cysts
Epstein pearls are just one member of a family of harmless oral inclusion cysts found in newborns. The other two you may hear about are Bohn’s nodules and dental lamina cysts. All three are benign, self-resolving, and made of trapped epithelial tissue, but they differ in where they form and what embryonic structure they come from.13PubMed Central. Dental lamina cysts in a newborn infant
- Epstein pearls: found along the midline of the hard palate, arising from epithelial remnants trapped during palatal fusion.
- Bohn’s nodules: found along the outer edges of the gum ridges or on the palate away from the midline, arising from minor salivary gland tissue or other palatal epithelial remnants.
- Dental lamina cysts: found on the crest of the alveolar ridges (the gum ridges where teeth will later emerge), arising from remnants of the dental lamina, the tissue that gives rise to tooth buds.
In practice, telling these apart can be tricky even for clinicians, and the distinction rarely matters because the management is identical for all three: leave them alone and wait. The terminology mainly exists for research purposes and to help dental professionals catalog oral findings during neonatal exams. If a pediatrician or dentist uses any of these terms, the message is the same. The bumps are normal and will go away.
Factors That May Influence Whether They Appear
Because Epstein pearls are so common, researchers have tried to figure out whether certain prenatal or perinatal factors make them more or less likely. The findings are interesting but should be taken as associations, not causes.
One of the more consistent findings involves folic acid supplementation during pregnancy. A study of over 1,000 Turkish neonates found that maternal folic acid consumption was significantly associated with a higher prevalence of Epstein pearls. The association was moderate in size, and a similar positive link was found for Bohn’s nodules and dental lamina cysts.14PubMed Central. Oral findings and its association with prenatal and perinatal factors in newborns – Section: Results This does not mean folic acid is harmful. Folic acid is essential for preventing neural tube defects and other serious developmental problems. The association may simply reflect that folic acid supports robust epithelial growth, including the kind that leads to these harmless trapped cell nests. It could also be a statistical artifact: women who take folic acid tend to have better prenatal care overall, and their babies may be examined more carefully.
The same Turkish study found that preterm birth was negatively associated with Bohn’s nodules, meaning premature babies were less likely to have them. That relationship makes intuitive sense: if the baby is born before palatal fusion is fully complete, there is less time for the epithelial remnants to organize into visible cysts. A Brazilian study, however, found the opposite for Epstein pearls specifically, reporting that prematurity and low birth weight were associated with a higher prevalence of Epstein pearls.15Journal of Dentistry for Children. Prevalence of Oral Inclusion Cysts in a Brazilian Neonatal Population The Brazilian study also found a link with mothers who worked during pregnancy. These conflicting results suggest that the picture is complicated and likely involves many interacting factors, including genetics, nutrition, gestational age, and how closely the baby was examined.
When Parents Should and Should Not Worry
The vast majority of white bumps on a newborn’s palate are Epstein pearls or one of their close cousins and need no attention at all. Parental anxiety about oral findings in newborns is common and well documented.16PubMed Central. Oral Lesions in Neonates Clinicians who study neonatal oral health repeatedly emphasize that unnecessary referrals and interventions should be avoided, and that parental counseling is the most important step.17BMJ Case Reports. Dental lamina cysts in a newborn infant
That said, there are a few situations where an oral bump warrants a closer look by a healthcare provider:
- Rapid growth: Epstein pearls stay small and stable. A bump that grows noticeably over days or weeks is worth examining.
- Redness or swelling: The tissue around an Epstein pearl should look normal. Redness, warmth, or swelling could suggest an infection or a different kind of lesion.
- Feeding difficulty: While Epstein pearls do not normally interfere with nursing, a large cyst in an unusual position could theoretically cause latching issues. If your baby is struggling to feed and you can see a prominent bump, mention it to the pediatrician.
- Persistence beyond a few months: Most pearls resolve well within the first few months. A bump that persists past six months, or that appears in an older infant who did not have it at birth, is probably something else and should be evaluated.
- Unusual location: Bumps on the gums that look hard or tooth-like could be natal teeth, which are actual teeth present at birth. Natal teeth are far rarer than Epstein pearls and sometimes need management because of the risk of aspiration if the tooth is loose.
For the typical small, white, painless bump on the midline of the palate in a healthy newborn, the correct course of action is nothing. Point it out at the next well-baby visit if you want confirmation, but do not try to remove it yourself.
Why They Often Go Unnoticed
Given that Epstein pearls are present in at least a third of all newborns and possibly far more, it is surprising how few parents have heard of them. Part of the reason is that the bumps are small, painless, and hidden inside the mouth. Unless a parent happens to look at the roof of their baby’s mouth, or a nurse points them out during the initial hospital exam, they can easily come and go without anyone realizing they were there. Many pediatricians consider them so unremarkable that they do not mention them to parents unless asked, which inadvertently means the first time a parent notices one, they have no frame of reference for what it could be.
Dental professionals are actually less likely to encounter these cysts than pediatricians or neonatal nurses, because infants do not typically see a dentist until after their first tooth erupts, by which point the pearls have long since resolved.18PubMed Central. Dental lamina cysts in a newborn infant This gap in professional awareness has been flagged in the literature: because dentists rarely see the cysts in clinical practice, some may not immediately recognize them if an anxious parent brings in a very young infant.
Epstein Pearls in Animal Research
The process by which epithelial tissue gets trapped during palatal development is not unique to humans. Animal studies looking at palatal development in mice have documented the formation of keratin-filled epithelial cysts that closely resemble Epstein pearls.19PubMed. Tooth induction and temporal patterning in palatal epithelium of fetal mice In these experiments, when palatal epithelium was manipulated to study tooth induction, the tissue often formed keratin-filled cysts instead of tooth structures. This tells us that the tendency for palatal epithelium to form small keratin pockets is a deeply conserved feature of mammalian development, not a defect or anomaly in humans. It is simply what this particular tissue does when it gets enclosed or separated from its normal context during the complex choreography of palatal fusion.
Understanding the developmental mechanism also helps explain why the cysts are so consistently found along the midline. The palate forms from two separate shelves that grow inward from either side and meet in the middle. The seam where they join is where epithelial cells are most likely to get pinched off and trapped beneath the fused surface. It would be strange, from a developmental biology perspective, if these remnants never formed. The surprise is not that Epstein pearls exist but that any baby is born without them.