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Pacifier

A pacifier, also known as a dummy, soother, or binky, is an artificial made of rubber, , or designed for infants and young children to suck on, satisfying their innate non-nutritive sucking reflex to provide comfort and soothing when they are not hungry or feeding. Pacifiers have a long history, with early versions crafted from materials like clay, silver, coral, and wood dating back centuries, evolving into modern designs focused on safety and hygiene by the . Introduced typically after is established, around 3-4 weeks of age, pacifiers are widely used globally to calm fussy babies, aid sleep, and reduce pain during procedures like vaccinations or circumcisions. Notable benefits include a reduced risk of sudden infant death syndrome (SIDS) when used at bedtime and naptime, potentially due to improved airway positioning or arousal responses, with meta-analyses indicating approximately a 50-60% risk reduction associated with pacifier use during sleep. For preterm infants, pacifier use can shorten hospital stays and support feeding transitions. However, risks involve potential interference with breastfeeding if introduced too early, increased incidence of middle ear infections, and dental issues like malocclusion if use persists beyond 2-4 years. Health organizations such as the American Academy of Pediatrics recommend limiting use to sleep times after 1 month of age and weaning by 6 to 12 months of age to minimize these concerns while maximizing protective effects.

Overview and Types

Definition and Purpose

A pacifier is a nipple-shaped device, typically constructed from rubber, , or , designed to satisfy a baby's non-nutritive sucking by providing an artificial for sucking without nutritional intake. This is an innate behavior observed in newborns, distinct from nutritive sucking during feeding, as it serves primarily to promote calmness rather than sustenance. The primary purpose of a pacifier is to facilitate self-soothing in infants and toddlers, helping to reduce , alleviate distress, and provide comfort during periods of or when is not the issue. By mimicking the sucking action associated with or bottle-feeding, it addresses the natural urge for oral stimulation that persists beyond nutritional needs, thereby supporting emotional regulation in young children. The term "pacifier" originates from the early 20th century in American English, deriving from the verb "pacify" meaning to calm or soothe, reflecting its role in quieting a fussy child; in contrast, it is known as a "dummy" in British and Australian English, implying a silent or non-speaking substitute, and a "soother" in Canadian and Irish English, emphasizing its calming function. These variations highlight cultural differences in nomenclature for the same device.

Varieties and Materials

Pacifiers are classified into several shapes designed to accommodate a baby's oral development and comfort. Orthodontic pacifiers feature a that is flattened on the bottom and rounded on top, mimicking the shape of a mother's during to potentially reduce the risk of dental misalignment with prolonged use. Symmetrical or rounded pacifiers have a uniform bulb-shaped that allows for easy acceptance by newborns and promotes natural sucking motions. Butterfly designs refer to the shield shape, which is contoured to fit under the for better , often paired with either orthodontic or symmetrical nipples to minimize . The primary materials used in pacifier construction include , , and elements for non-nipple parts. pacifiers are made from medical-grade, synthetic material that is durable, heat-resistant for sterilization, and less prone to wear, making them suitable for repeated or use without degrading. pacifiers, derived from , offer a softer, more flexible texture that closely resembles a nipple, but they are more susceptible to allergic reactions in sensitive infants and break down faster over time. components, typically BPA-free, form the and handle for and grip, ensuring the overall structure remains lightweight and safe. Modern pacifiers must comply with safety standards such as the U.S. 16 CFR Part 1225 and EU EN 1400, which mandate ventilation holes, minimum shield size (at least 1.5 inches across), and restrictions on harmful chemicals like (BPA) to prevent and toxicity risks. However, as of October 2025, tests detected BPA exceeding limits in some brands including and Sophie la Girafe, linked to potential endocrine disruption, , low sperm count, and cancer, prompting batch recalls and further scrutiny. Pacifiers are tailored to different age groups to match oral size and sucking strength. Newborn varieties have small, soft nipples to fit tiny mouths and prevent overwhelming the infant's reflexes, typically recommended from birth to 6 months. Infant pacifiers feature standard-sized nipples for babies 6 to 18 months, providing a balance of support as teeth emerge. Toddler pacifiers include larger shields and firmer nipples for children over 18 months, aiding in transitioning away from sucking while maintaining comfort. Orthodontic shapes are generally introduced after 6 months when teeth begin to develop. Specialized pacifiers address unique needs beyond standard soothing. Hospital-grade models, such as the Soothie design, use 100% medical-grade for sterility and durability in clinical settings, often with notches to accommodate medical tubing in neonatal intensive care units. Glow-in-the-dark pacifiers incorporate luminescent materials in the handle to facilitate nighttime location without disturbing sleep. Flavored or scented varieties, like vanilla-infused options, are employed therapeutically in hospitals to calm infants during procedures by providing a familiar, soothing aroma that encourages acceptance.

Historical Development

Origins and Early Adoption

The earliest precursors to modern pacifiers date back to the Period, when small balls made of fabric, sometimes filled with food, were used to soothe infants and encourage the sucking reflex essential for feeding. These simple devices appear in historical art and artifacts as tools for calming children, reflecting an understanding of non-nutritive sucking as a natural behavior observed even . By the in German-speaking regions, variations such as the Lutschbeutel—a cloth bundle containing sweetened or other soft substances—served a similar purpose, often moistened to enhance appeal for babies. The invention of the recognizable modern pacifier occurred in the late 19th and early 20th centuries, building on earlier European designs. In 1901, Christian W. Meinecke, a from , , patented the "Baby Comforter," featuring a rubber attached to a disc-shaped guard to prevent , marking a shift toward safer, mass-producible items. This design drew from prior innovations, including bone or teething rings with attached rubber components, which had gained popularity in during the mid-1800s. Early adoption faced significant challenges, particularly in the , where pacifiers and similar sucking aids were stigmatized as markers of and parental . Medical literature of the time portrayed prolonged sucking—whether on thumbs, rags, or early pacifiers—as leading to "ricketty, pale, pasty" children lacking vitality, fueling moral panics that equated the habit with deviance or poor upbringing. In the United States, these concerns, amplified by influential studies linking sucking to and nervous disorders, contributed to slower acceptance compared to , where such devices were more routinely integrated into childcare by the early 1900s despite occasional local prohibitions in institutions wary of hygiene risks.

Modern Innovations

In the mid-20th century, pacifier design shifted toward orthodontic shapes to minimize potential dental misalignment from prolonged use. This innovation began with research in the 1940s by German pediatricians and dentists, leading to the development of the first orthodontic nipple by the NUK brand in 1956, which mimicked the natural positioning of the tongue and jaw during breastfeeding to support proper oral development. These shapes featured a flattened or angled nipple that encouraged neutral tongue placement, reducing the risk of open bites or overbites compared to earlier round designs. Material evolutions in pacifier manufacturing addressed health concerns related to allergies and chemical exposure. The transition from natural latex rubber, commonly used since the early for its flexibility, to occurred in the late 1970s and 1980s as proved more and less likely to cause latex allergies in sensitive . By the 2000s, regulations prompted the shift to BPA-free plastics following growing evidence of (BPA) leaching from components; for instance, voluntary phase-outs by manufacturers began around 2006, with bans in products like pacifiers enacted in states such as by 2010 to protect infant health. Recent innovations have focused on , , and monitoring capabilities. Vented shields, introduced in the late 1970s by the Danish BIBS, incorporated multiple airflow holes to reduce and buildup around the baby's face while preventing suffocation risks. One-piece molded designs, popularized in the late , enhanced by eliminating seams where could accumulate, making them easier to clean and less prone to breakdown. In the , smart pacifiers emerged with integrated sensors for real-time tracking; for example, a 2025 NIH-funded project by developed a device using AI and sound analysis to monitor breathing and patterns, transmitting data wirelessly to caregivers. Global standardization efforts for pacifier safety advanced in the early 2000s, with the EN 1400 (first published in 2002) establishing requirements for materials, construction, mechanical integrity, toxicity testing, and ventilation to prevent and other hazards; this influenced regulations in the and harmonized with U.S. standards like 16 CFR Part 1511.

Usage Guidelines

Proper Introduction and Weaning

Introducing a to an should be delayed until is well established, typically around 3 to 4 weeks of age, to avoid interference with supply and . Parents are advised to limit pacifier use primarily to sleep times, such as naps and bedtime, and periods of fussing, rather than as a constant soother or substitute for feeding, to promote healthy sucking patterns and reduce dependency. Pacifiers are generally suitable from birth through , but experts recommend discouraging prolonged use after 6 months to reduce the risk of ear infections, with most children between 2 and 4 years to prevent potential impacts on oral structures. The suggests beginning the process around 6 to 12 months, aligning with reduced risks of ear infections and alignment with developmental milestones. Effective weaning strategies include gradual reduction, such as eliminating use during daytime first while retaining it for sleep, followed by shortening sleep-time durations over weeks. Parents can employ distractions like toys or activities during fussy moments and positive , such as praise or small rewards, to encourage independence; for older toddlers around 2 years, a "cold turkey" approach—removing all pacifiers at once after preparation—may be suitable if the child is developmentally ready. Consulting a pediatrician can help tailor these methods to the child's needs. Parents should monitor for signs of overuse, such as a constant need for the pacifier beyond 12 months during awake times, which may indicate emerging and warrant earlier . By observing the child's cues and adhering to these guidelines, caregivers can foster soothing benefits while minimizing long-term habits.

Cleaning and Maintenance

Proper cleaning of pacifiers is essential to maintain and prevent , particularly for infants whose s are still developing. For newborns and infants under 2 months, pacifiers should be sterilized daily, such as by in for five minutes or using or methods. For infants 2 to 6 months, continue frequent sterilization (e.g., before each use if dropped or soiled, or at least every few days) until the matures. After the initial before first use, daily cleaning can involve hand-washing with hot y , ensuring all parts are thoroughly rinsed and the is squeezed to remove trapped . For older infants beyond six months, and suffice for routine daily cleaning, as their s handle minor contaminants better. Sterilization methods vary by age and convenience but should align with manufacturer instructions to avoid damage. Steam sterilizers provide an effective option for ongoing use, killing without chemicals, while placing dishwasher-safe pacifiers on the top rack of a works well for infants over six months. Avoid using microwaves, sponges, or , as these can degrade materials or leave residues. Material types, such as versus , influence cleaning ease; withstands heat better and requires less frequent replacement than natural rubber , which can wear faster. Regular inspection ensures safety by identifying potential hazards early. Caregivers should check pacifiers monthly for cracks, discoloration, tears, or loose parts, discarding any compromised ones immediately to avoid risks. Replacement is recommended every one to two months, or sooner after illness or heavy use, even if no visible damage appears, to uphold hygiene standards. For storage, always air-dry pacifiers upright on a clean surface or rack after cleaning to prevent moisture buildup and bacterial proliferation. Store them in a clean, dry, covered container away from contaminants, and never share pacifiers between children to minimize germ transmission.

Health Benefits

Soothing and Sleep Promotion

Pacifiers provide immediate comfort to infants by satisfying their innate non-nutritive sucking reflex, a natural behavior that promotes self-soothing and relaxation. This sucking action promotes self-soothing and relaxation. Clinical evidence supports the soothing effects of pacifiers, particularly in reducing . For instance, during painful s like , pacifier use with maternal holding has been shown to reduce to about 45% of the procedure time. The further endorses pacifier use at the onset of , noting its association with a reduced risk of (), based on multiple case-control studies demonstrating protective effects during periods. In terms of sleep promotion, pacifiers help shorten the to sleep onset and enhance overall sleep quality in young infants. Research indicates that sucking on a pacifier facilitates faster settling and promotes more consolidated sleep patterns, particularly in the 0-6 month age range, by aiding self-soothing and reducing fussiness that disrupts rest. This benefit aligns with broader observations that non-nutritive sucking quiets restless infants and supports restful without significantly altering arousal thresholds. Beyond sleep, pacifiers offer comfort in everyday non-medical scenarios, such as during vaccinations where they mitigate procedural distress by providing a familiar soothing outlet, or on airplane travel to ease ear discomfort from pressure changes through swallowing facilitated by sucking.

Potential Protective Effects

Pacifier use during sleep has been associated with a reduced risk of sudden infant death syndrome (SIDS) in infants. A 2005 meta-analysis of case-control studies found that pacifier use was linked to a 52% lower odds of SIDS (pooled odds ratio 0.48; 95% CI 0.44-0.52), with even greater protection observed when pacifiers were used specifically for sleep (odds ratio 0.38; 95% CI 0.31-0.45). This protective effect is thought to stem from mechanisms such as maintaining airway patency or promoting arousal from sleep. The American Academy of Pediatrics continues to recommend offering a pacifier at naptime and bedtime for infants to reduce SIDS risk, based on consistent evidence from multiple studies. In addition to SIDS prevention, pacifiers provide analgesic effects during painful procedures in neonates. Randomized trials have demonstrated that non-nutritive sucking with a significantly reduces pain responses, as measured by behavioral scales like the Neonatal Infant Pain Scale, often comparably or superior to sweet solutions such as or glucose. For instance, in procedures, use alone lowered pain scores more effectively than oral in some newborn cohorts, supporting its role as a simple, in neonatal care. These benefits are most pronounced in term and preterm infants undergoing minor invasive procedures. For preterm infants, non-nutritive sucking with s supports neurobehavioral organization and earlier hospital discharge. However, the protective effects of pacifiers are primarily observed in younger infants and tend to wane after 6 months of age, as the incidence of decreases naturally and other risks may emerge. Studies have not identified pacifier use as protective against allergies or ; in fact, prolonged use has been associated with increased risk of in some analyses.

Risks and Drawbacks

Oral and Dental Impacts

Prolonged pacifier use beyond two years of age has been associated with an increased risk of dental misalignments, particularly anterior open bite and increased overjet, affecting approximately 20-30% of such users according to orthodontic studies. These conditions arise from the constant pressure exerted by the pacifier on the developing and , which can prevent proper vertical closure of the and push the upper incisors forward. In one study of children with extended sucking habits, Class II rates reached 27.9% among prolonged users (over 1.5 years), with anterior open bite at 13.7%, compared to lower rates in those who discontinued earlier. Extended use past 24 months may contribute to speech delays, including lisping and articulation disorders, primarily due to altered tongue positioning within the oral cavity. The 's presence encourages a forward , which can distort the and limit the tongue's mobility needed for precise sound production, such as like /s/ and /z/. Research indicates that this interference becomes more pronounced during years when speech skills rapidly develop, potentially leading to persistent issues if the habit continues unchecked. Regarding jaw development, prolonged pacifier sucking poses risks for posterior , often stemming from asymmetrical sucking patterns that unevenly influence mandibular . This occurs when the upper teeth fit inside the lower teeth on one or both sides, potentially narrowing the maxillary arch due to sustained lateral pressure. Fortunately, such changes are often reversible if the pacifier is discontinued before age four, as natural can correct mild discrepancies during the mixed phase. Some studies suggest orthodontic pacifier designs, which feature a flattened to reduce pressure on the teeth and promote more natural positioning, may induce less open bite compared to conventional designs. The Academy of (AAPD) advises limiting pacifier use and discontinuing by age 3 years to minimize risks of misalignment and support healthy orofacial development.

Infection and Dependency Concerns

Pacifier use is widespread among infants, with studies indicating that 58% to 85% of U.S. infants employ them at some point, peaking around 3 months of age. However, unclean pacifiers can harbor significant microbial , promoting such as alpha-hemolytic streptococci, which have been isolated from pacifiers of infants experiencing acute . This colonization arises from contact with oral and environmental exposure, potentially leading to if is neglected. In terms of specific infections, improper cleaning of pacifiers elevates the risk of oral thrush caused by species, as dirty pacifiers facilitate the spread of yeast through biofilms that disrupt the mouth's microbial balance. Additionally, pacifier use is linked to a higher incidence of infections, with research showing a of 1.5 to 2.0 for acute among users compared to non-users, and some analyses attributing up to a quarter of such episodes in children under 3 to pacifier habits. Restricting pacifier use, particularly at sleep times, has been shown to mitigate this risk effectively. Beyond infections, pacifiers can foster through emotional attachment, often serving as a primary soothing that creates strong associations, leading to frequent arousals if the pacifier falls out during rest. becomes notably more challenging after , as prolonged reliance may exacerbate separation anxiety and habitual behaviors, with over 20% of children maintaining non-nutritive sucking habits beyond 36 months in some cohorts. Other concerns include choking hazards from pacifier breakdown, particularly with multi-piece designs where the nipple can detach and pose an aspiration risk to young children. Recent data indicate and teething devices also pose risks for craniofacial injuries, with over 5,000 emergency visits from 2012-2021 mostly involving falls in children under 2 years old. Prolonged use may contribute to palatal narrowing, potentially increasing risk of . Early introduction of , before is established, is also associated with reduced breastfeeding duration, with one study reporting a 53% increased hazard for shortened full breastfeeding when introduced by 6 weeks.

Medical Recommendations

Guidelines from Health Authorities

The (AAP) recommends offering a at time and for infants to reduce the of (SIDS), with this practice advised from about one month of age through the first year of life. However, the AAP strongly advises delaying pacifier introduction until is firmly established, typically around 3 to 4 weeks postpartum, to avoid nipple confusion and support optimal . The (WHO) and caution against introducing pacifiers to breastfed infants before is well established, as early use may interfere with milk supply and successful nursing, per the Ten Steps to Successful guidelines. These organizations endorse limited pacifier use in low-resource settings, such as for soothing during maternal-infant separation or painful procedures when support is unavailable. The (ADA) notes that most children stop using pacifiers between 2 and 4 years of age and recommends discouraging use after age 4 if it continues, to prevent potential oral issues like malocclusion; parents should consult a dentist for strategies. authorities including the AAP and ADA recommend using BPA-free, one-piece, unbreakable pacifiers for , aligning with FDA regulations on BPA in children's products since 2012.

Use in Clinical Contexts

In neonatal intensive care units (NICUs), non-nutritive sucking (NNS) with a is employed to promote physiologic stability in preterm infants. This intervention helps stabilize and oxygenation levels during stressful procedures and rest periods, contributing to better overall neurobehavioral . Clinical trials have demonstrated that NNS facilitates earlier transition to oral feeding and reduces length of hospital stay by an average of about 4.6 days. Pacifiers also play a key role in neonatal , particularly for minor procedures like heel sticks and . During heel sticks, NNS significantly lowers pain scores on validated scales such as the Neonatal Pain, Agitation, and Sedation Scale (N-PASS). In trials, combining pacifier use with has been shown to provide significant analgesia, reducing crying and behavioral pain indicators. These effects stem from the pacifier's ability to activate endogenous pathways, providing a non-pharmacologic option that aligns with guidelines from bodies like the . Beyond , pacifiers find therapeutic application in specialized settings for sensory and oral development support. In pediatric dental clinics, orthodontic pacifiers—designed with flattened or angled nipples to mimic natural tongue positioning—are used to potentially minimize risks during supervised use, particularly for children with emerging dental concerns, though on their superiority over conventional types is mixed. Hospital policies in maternity wards emphasize sterile provision and structured to ensure safety during and after inpatient stays. Pacifiers distributed in these settings are typically single-use or sterilized per infection control standards, such as autoclaving or chemical disinfection, to prevent nosocomial in vulnerable populations. Post-discharge protocols, often outlined in support guidelines, advise initiating between 6 and 12 months to avert prolonged dependency, with follow-up counseling on gradual reduction techniques like limiting use to sleep times. The Academy of Breastfeeding Medicine recommends coordinating discharge to include pacifier risks and benefits, ensuring continuity from to .

Psychological Dimensions

Attachment Behaviors

Infants often display attachment to pacifiers through observable behaviors such as increased mouthing during periods of , incorporation into sleep rituals like nighttime sucking, and use during transitions such as feeding shifts or environmental changes. These patterns are particularly pronounced in preterm infants, who exhibit stronger non-nutritive sucking needs to support oral development and comfort during recovery. Several factors influence the intensity of these attachment behaviors, including temperament, where high-need or fussy babies show greater reliance on for self-soothing. Parental responsiveness also plays a key role; lower maternal emotional availability during interactions correlates with more frequent use to manage distress. Longitudinal studies indicate that 60-80% of use pacifiers by three months of age, often integrating the device into daily calming practices. Cultural differences affect pacifier use, with higher rates in some Western countries (e.g., up to 70-80% prevalence) compared to others like Japan (around 12%), where alternative soothing practices may be preferred. Strong attachments in some cases may contribute to dependency risks later on.

Emotional and Cognitive Roles

Pacifiers serve as transitional objects in child development, a concept introduced by psychoanalyst Donald Winnicott, who described them as comforting items that help infants bridge the gap between internal psychological experiences and external reality, thereby supporting emotional regulation during periods of stress. In this role, pacifiers can mitigate separation anxiety by providing a symbolic representation of the caregiver, facilitating smoother transitions away from the parent and reducing associated distress in novel or unfamiliar situations. Empirical observations suggest that pacifiers may decrease fussiness and crying in some controlled settings, though evidence from randomized trials is mixed. Regarding , pacifiers may contribute to the emergence of self-regulation skills in by promoting self-soothing behaviors that allow toddlers to manage and emotional states more effectively. from the 2010s highlights that such non-nutritive sucking supports attentional focus during play and , potentially enhancing executive function precursors like in toddlers aged 18-36 months. For instance, studies have found that mothers of pacifier users perceive their children as displaying less negative , suggesting potential benefits through stabilized parent-child interactions. However, excessive pacifier use has been associated with potential drawbacks, including delays in and milestones. Prolonged reliance beyond infancy can hinder the development of verbal communication skills, with cohort studies showing smaller sizes at 18-24 months among heavy users, possibly due to reduced opportunities for expressive and social . Similarly, overuse may impair the processing of emotional concepts, as evidenced by slower response times to abstract and affective words in children with extended pacifier histories, indicating subtle disruptions in conceptual and emotional categorization. From a theoretical perspective, applications of , originally developed by , position the pacifier as a potential substitute for a secure base, offering a portable source of comfort that echoes the caregiver's protective function and enables independent exploration while maintaining a sense of security. This framework suggests that, when used appropriately, pacifiers reinforce attachment security by alleviating anxiety without supplanting primary caregiver bonds, though empirical evidence indicates mixed outcomes, with some attachments correlating less strongly to secure maternal relationships compared to soft objects like blankets.

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