Baby Teeth Timeline: When They Come In, When They Fall Out from a Local Nassau County Pediatric Dentist
- precioussmilespd
- Jan 8
- 12 min read
When will my baby's first tooth appear? When should my child start losing teeth? These are among the most common questions parents ask at Precious Smiles Pediatric Dentistry in Great Neck. Whether you're a new parent in Manhasset, a family in Roslyn, or anywhere throughout Nassau County and Port Washington, understanding your child's tooth development timeline helps you know what to expect and when to seek professional guidance.
This comprehensive guide provides everything you need to know about baby teeth eruption and shedding, backed by recommendations from the American Academy of Pediatric Dentistry (AAPD) and our years of experience serving Long Island families.
Understanding Baby Teeth: More Important Than You Think
Before diving into the timeline, it's essential to understand why baby teeth, also called primary teeth or deciduous teeth, matter so much, even though they're temporary.
The Critical Functions of Primary Teeth
According to the AAPD, baby teeth serve vital functions that directly impact your child's development and future oral health:
Space Holders for Permanent Teeth
Primary teeth reserve space for their permanent counterparts. When a baby tooth is lost prematurely due to decay or trauma, adjacent teeth can shift into the empty space, potentially preventing the permanent tooth from erupting properly and leading to orthodontic issues.
Proper Nutrition and Development
Baby teeth enable children to chew food effectively, which is essential for proper nutrition and healthy growth. Missing or decayed teeth make it difficult to chew, causing children to reject nutritious foods and potentially impacting their overall development.
Speech Development
Primary teeth play a crucial role in helping children develop clear speech patterns. They guide the tongue during speech formation, and their early loss can contribute to speech difficulties.
Facial Structure and Appearance
Baby teeth help give your child's face its typical shape and form. They support proper jaw development and contribute to a child's self-confidence through a healthy smile.
Foundation for Permanent Teeth
Decay and infection in baby teeth can cause dark spots and damage to develop beneath permanent teeth that are forming underneath. Maintaining healthy primary teeth protects the permanent teeth developing below them.
At Precious Smiles Pediatric Dentistry, we take a holistic, conservative approach to protecting these important little teeth, using minimally invasive techniques to preserve natural tooth structure whenever possible.
Complete Baby Teeth Eruption Timeline
Most children follow a generally predictable pattern for tooth eruption, though timing can vary significantly from child to child. According to the American Dental Association and AAPD guidelines, here's what to expect:
When Baby Teeth Start Coming In
Birth to 6 Months: The Foundation
Though typically no teeth are visible at birth, all 20 primary teeth are already present under your baby's gums, waiting to erupt. In rare cases, babies are born with natal teeth (present at birth) or develop neonatal teeth (appearing within the first month), which usually require evaluation by a pediatric dentist.
6-12 Months: The First Teeth Arrive
The first baby teeth to erupt are usually the lower central incisors (the two bottom front teeth), typically appearing around 6 months of age. However, it's completely normal for the first tooth to appear anywhere between 4 and 12 months.
Shortly after, around 8-12 months, the upper central incisors (two top front teeth) emerge. These first four teeth mark an exciting milestone and signal it's time for your child's first dental visit.
9-16 Months: Lateral Incisors
Next to erupt are the lateral incisors, the teeth on either side of the central incisors. The upper lateral incisors typically appear around 9-13 months, followed by the lower lateral incisors at 10-16 months.
13-19 Months: First Molars
The first molars are the large, bumpy teeth at the back of the mouth used for grinding food. These erupt around 13-19 months and can be particularly uncomfortable during teething. Learn more about managing teething discomfort during this phase.
16-23 Months: Canines (Cuspids)
The pointed canine teeth, located between the incisors and molars, emerge next. Upper canines typically erupt around 16-22 months, and lower canines follow at 17-23 months.
23-33 Months: Second Molars
The final primary teeth to erupt are the second molars, appearing around 23-31 months (lower) and 25-33 months (upper). By approximately age 3, most children have all 20 primary teeth, 10 on top and 10 on bottom.
The "Rule of Four" for Baby Teeth
A helpful guideline: for every 6 months of age, expect approximately 4 teeth to have erupted. So by 12 months, most babies have about 8 teeth; by 18 months, about 12 teeth; and by 24 months, about 16 teeth.
Baby Teeth Shedding Timeline: When Do Kids Lose Their Teeth?
Just as exciting as that first tooth is the milestone of losing the first baby tooth! This natural process makes way for permanent teeth and typically follows a predictable pattern.
When Tooth Loss Begins
Ages 5-7: Central Incisors
Children usually begin losing their primary teeth around age 5-6, starting with the same teeth that erupted first, the lower central incisors. The upper central incisors typically follow around age 6-7.
This first wiggling tooth often coincides with the eruption of the first permanent molars (the "six-year molars") behind all the baby teeth. Learn more about when children need orthodontic evaluation during this transitional stage.
Ages 7-8: Lateral Incisors
About a year after losing the central incisors, children shed their lateral incisors. Lower lateral incisors are typically lost around age 7-8, followed by upper lateral incisors around age 7-8.
Ages 9-12: The Mixed Dentition Phase
Between ages 6 and 12, children have what's called "mixed dentition", a combination of primary and permanent teeth. During this time, the smile may look uneven with some big teeth, some small teeth, and even some gaps. This is completely normal!
Ages 9-11: First Molars and Canines
The first molars (not to be confused with the six-year permanent molars) are shed around ages 9-11. Lower canines typically fall out around ages 9-12, while upper canines are lost around ages 10-12.
Ages 10-12: Second Molars
The last baby teeth to be shed are the second molars, usually lost between ages 10-12. By around age 12-13, most children have lost all 20 primary teeth.
What About Permanent Teeth?
By early adolescence, children typically have 28 permanent teeth. The four wisdom teeth (third molars) emerge later, usually between ages 17-21, bringing the total to 32 permanent teeth. Many people require wisdom tooth evaluation to determine if removal is necessary.
Variations Are Normal: When to Be Concerned from a Nassau County Pediatric Dentist
Every child develops at their own pace, and tooth eruption timing can vary significantly. However, there are some situations where consultation with a pediatric dentist is warranted.
Normal Variations Include:
First tooth appearing anywhere between 4-12 months
Teeth erupting several months earlier or later than average
Teeth erupting in a slightly different order
Slight differences between right and left sides
Girls often getting teeth slightly earlier than boys
When to Contact Your Great Neck Pediatric Dentist:
No teeth by 15-18 months: While late eruption can be normal, very delayed eruption may require evaluation
Extremely early tooth loss: Baby teeth lost before age 4-5 may indicate trauma or underlying issues
Very delayed tooth loss: If baby teeth haven't begun loosening by age 7-8
Asymmetric eruption or loss: Significant differences between right and left sides
Pain, swelling, or unusual symptoms during teething or tooth loss
Teeth erupting in abnormal positions or out of sequence
Discolored or damaged teeth at any age
At Precious Smiles Pediatric Dentistry, Dr. Debbie provides comprehensive evaluations for children experiencing any developmental concerns. Our holistic approach considers your child's overall health and development, not just their teeth.
Teething: Signs, Symptoms, and Relief
Teething, the process of baby teeth breaking through the gums, can be uncomfortable for babies and stressful for parents. Understanding what's normal helps you provide effective relief.
Common Teething Symptoms
According to the AAPD and recent research, genuine teething symptoms include:
Irritability and fussiness: Discomfort from gums can make babies cranky
Increased drooling: Excessive drooling often accompanies teething
Desire to chew: Babies gnaw on objects to relieve gum pressure
Tender, swollen gums: The area around the emerging tooth may appear red
Sleep disruptions: Discomfort can cause more frequent night wakings
Mild temperature elevation: A slight increase in temperature (not true fever)
What's NOT Caused by Teething
High fever (above 100.4°F), diarrhea, vomiting, rashes, or significant illness are NOT caused by teething. If your baby experiences these symptoms, contact your pediatrician, something else is likely going on.
Safe and Effective Teething Relief
Parent-Approved Methods:
Gently massage your baby's gums with a clean finger
Offer chilled (not frozen) teething rings
Provide a cool, damp washcloth to chew on
Give cold, soft foods if your baby has started solids
Use age-appropriate pain relievers like acetaminophen (with pediatrician approval)
Avoid These Dangerous Products:
Benzocaine teething gels (FDA warning due to serious risks)
Homeopathic teething tablets (inconsistent ingredients)
Amber teething necklaces (choking and strangulation hazards)
Frozen teething rings (can damage gums)
For more detailed guidance, visit our comprehensive guide on teething relief strategies.
Caring for Baby Teeth: From Eruption to Loss
Proper care from the very first tooth sets the foundation for lifelong oral health. Here's what families in Nassau County need to know about caring for primary teeth.
Before the First Tooth: Birth to 6 Months
Even before teeth erupt, oral hygiene matters. The AAPD recommends:
Wipe your baby's gums with a clean, damp cloth after feedings
This removes bacteria and prepares your baby for tooth brushing
Avoid putting babies to bed with bottles containing anything but water
Learn about preventing baby bottle tooth decay, a serious but preventable condition.
Once Teeth Appear: 6 Months to 3 Years
Brushing Guidelines:
Start brushing as soon as the first tooth erupts
Use a soft-bristled infant toothbrush
Use a rice-grain-sized smear of fluoride toothpaste for children under 3
Brush twice daily, morning and bedtime
Always supervise and assist with brushing
First Dental Visit: According to the AAPD and American Dental Association, children should have their first dental visit by age 1 or within six months of the first tooth erupting, whichever comes first. This early visit establishes a dental home and allows for preventive guidance tailored to your child's needs.
Ages 3-6: Building Independence
Increase toothpaste to a pea-sized amount at age 3
Continue to brush your child's teeth or supervise closely
Introduce flossing when teeth touch each other
Regular dental checkups every 6 months
Consider dental sealants for cavity-prone molars
If you're struggling with brushing cooperation, read our guide on how to brush a toddler's teeth when they won't let you.
Ages 6-12: The Mixed Dentition Years
Children can begin brushing independently around age 6-7
Parents should still supervise and check their work
Flossing becomes increasingly important
First permanent molars need immediate attention and sealant consideration
Orthodontic evaluation around age 7
For age-specific guidance, see our complete dental care by age guide.
The Holistic Approach to Children's Tooth Development from a Manhasset, Nassau County Pediatric Dentist
At Precious Smiles Pediatric Dentistry, we believe in treating the whole child, not just their teeth. Our holistic, conservative philosophy recognizes that tooth development is interconnected with overall health and wellbeing.
Nutrition's Role in Healthy Tooth Development
Foods That Support Strong Teeth:
Calcium-rich foods (milk, cheese, yogurt, leafy greens)
Phosphorus sources (eggs, fish, nuts, beans)
Vitamin D for calcium absorption
Crunchy fruits and vegetables that naturally clean teeth
Water as the primary beverage
Foods and Habits to Limit:
Sugary snacks and beverages that fuel cavity-causing bacteria
Frequent grazing or sipping on juice throughout the day
Sticky candies that cling to teeth
Acidic drinks that erode enamel
Visit our comprehensive guide on foods for healthy teeth for more nutrition tips.
Sleep, Breathing, and Dental Development
Emerging research shows connections between sleep-disordered breathing, mouth breathing, and dental development issues. We evaluate for:
Proper jaw development and palate width
Tongue tie or other anatomical restrictions
Signs of mouth breathing or sleep disruption
Early orthodontic intervention when beneficial
Special Considerations for Children with Special Needs
Dr. Debbie has extensive training in special needs dentistry, understanding that children with autism, sensory processing disorders, developmental delays, and other challenges may experience dental milestones differently or require adapted care approaches.
We provide:
Sensory-friendly examination techniques
Extended appointment times without pressure
Visual schedules and social stories for preparation
Gentle, patient-centered care
Accommodations for wheelchairs and medical equipment
Common Questions About Baby Teeth Development
Q: My baby is 4 months old and has a tooth already. Is this normal?
A: While less common, some babies do get teeth earlier than the 6-month average. As long as the tooth appears healthy and you begin proper care immediately, early eruption is usually nothing to worry about. Schedule your first dental visit to ensure everything is developing properly.
Q: My 10-month-old still has no teeth. Should I be concerned?
A: Late eruption is often completely normal. Some babies don't get their first tooth until 12-15 months. However, if your baby hasn't had any teeth by 15-18 months, it's worth consulting with a pediatric dentist to rule out any underlying issues.
Q: Do baby teeth have roots?
A: Yes! Baby teeth have roots that anchor them in the jawbone. As permanent teeth develop underneath, they gradually resorb (dissolve) the baby tooth roots, causing the tooth to become loose and eventually fall out.
Q: My child's permanent teeth are coming in behind the baby teeth. What should I do?
A: This "shark tooth" situation is relatively common, especially with lower front teeth. Often the baby tooth will fall out on its own once the permanent tooth emerges further. However, have your pediatric dentist evaluate to determine if intervention is needed.
Q: Can you save a baby tooth that's been knocked out?
A: Unlike permanent teeth, knocked-out baby teeth should NOT be replanted due to risk of damage to the developing permanent tooth underneath. However, you should see your pediatric dentist immediately to ensure no fragments remain and to evaluate for any damage. Learn more about dental emergencies.
Q: My child is 7 and hasn't lost any teeth yet. Is this a problem?
A: While most children begin losing teeth around age 6, some don't start until 7 or even later. If your child's teeth are healthy and X-rays show permanent teeth developing normally underneath, this is usually not concerning. However, an evaluation can provide peace of mind.
Q: Should I wiggle my child's loose tooth to help it come out faster?
A: Gentle wiggling by your child (using clean hands or tongue) is fine and may help it fall out when it's ready. However, forcing a tooth out prematurely can cause pain, bleeding, or damage. Let nature take its course, or visit our office if a tooth seems stubbornly loose but won't come out.
Why Choose Precious Smiles for Your Child's Dental Development Journey
Families throughout Great Neck, Manhasset, Roslyn, Port Washington, and all of Nassau County trust Precious Smiles Pediatric Dentistry to guide their children through every stage of dental development.
What Makes Us Different
Holistic, Conservative Philosophy
We believe in preserving natural teeth and using the least invasive treatments necessary. Our approach considers your child's overall health, nutrition, development, and emotional wellbeing, not just their teeth.
Minimally Invasive Techniques
When intervention is needed, we use the most conservative options available, including:
Tooth-colored fillings that preserve natural tooth structure
Preventive focus to avoid problems before they start
Special Needs Expertise
Dr. Debbie has extensive training and experience working with children with special needs, including:
Autism Spectrum Disorder
Sensory processing disorders
Developmental delays
Physical disabilities
Anxiety and behavioral challenges
Our sensory-friendly environment and patient, individualized approach make dental care accessible for all children.
Early Intervention and Prevention
We establish dental homes for infants and emphasize prevention through:
Education on proper brushing and nutrition
Fluoride treatments and sealants
Early detection of potential issues
Guidance for parents on developmental milestones
Child-Centered Environment
Our office is designed specifically for children, creating a fun, welcoming space where kids actually look forward to visits. We use:
Age-appropriate explanations
Tell-show-do techniques
Positive reinforcement
Gentle, patient care that builds trust
Comprehensive Care for Growing Smiles
From first dental visits through adolescence, we provide complete care including:
Routine cleanings and exams
Preventive treatments
Cavity treatment with conservative approaches
Emergency dental care
Orthodontic screening and referrals
Guidance on habits like thumb-sucking
Teething support and parenting resources
Contact Your Trusted Nassau County Pediatric Dentist
Whether your baby is getting their first tooth, your toddler needs their initial dental visit, or your school-age child is entering the exciting phase of losing teeth, Precious Smiles Pediatric Dentistry is here to support your family every step of the way.
Dr. Debbie and our entire team are dedicated to providing exceptional, holistic dental care in a warm, welcoming environment where every child feels valued and safe.
Schedule Your Appointment Today
📍 Location: Great Neck, NY (conveniently serving Nassau County, Manhasset, Roslyn, Port Washington, and Long Island families)
📞 Call or Text: 516-330-0671
📸 Instagram: @precioussmilespd | @dr.debbiedds
🌐 Learn More: Visit the American Academy of Pediatric Dentistry (AAPD) for additional resources on children's oral health
Additional Resources on Our Website
Continue learning about pediatric dental care with these helpful resources:
References and Further Reading
American Academy of Pediatric Dentistry. (2025). Best Practices: Perinatal and Infant Oral Health Care. The Reference Manual of Pediatric Dentistry. Chicago, IL: AAPD. Retrieved from https://www.aapd.org
American Academy of Pediatric Dentistry. (2025). Best Practices: Developing Dentition and Occlusion. The Reference Manual of Pediatric Dentistry. Chicago, IL: AAPD.
American Dental Association. (2021). Tooth Eruption Charts. Retrieved from https://www.mouthhealthy.org/all-topics-a-z/eruption-charts
Cleveland Clinic. (2023). Teething (Teething Syndrome): Symptoms & Tooth Eruption Chart. Retrieved from https://my.clevelandclinic.org
Logan, W.H.G., & Kronfeld, R. (1933). Development of the human jaws and surrounding structures from birth to the age of fifteen years. Journal of the American Dental Association. Adapted by permission of the American Dental Association.
American Academy of Pediatric Dentistry. (2014). Fast Facts. Chicago, IL: AAPD.
Colgate Oral Care Center. Baby Teeth Eruption Chart and Timeline. Retrieved from https://www.colgate.com
Pampers. (2024). Baby Teeth Chart: Eruption Timeline & Care Tips. Retrieved from https://www.pampers.com
Precious Smiles Pediatric Dentistry proudly serves children and families throughout Nassau County, including Manhasset, Great Neck, Roslyn, Port Washington, and surrounding Long Island communities. Dr. Debbie's holistic, conservative approach to pediatric dentistry and specialized expertise in special needs dentistry makes us the trusted choice for families seeking compassionate, effective dental care for their children at every developmental stage. From that exciting first tooth through the transition to permanent teeth, we're here to support your family's journey to healthy, beautiful smiles.
Comments