A first loose tooth is an exciting milestone, but it can also bring questions. Is the tooth becoming loose at the right age? Which tooth should fall out first? What happens if a permanent tooth begins appearing before the baby tooth is gone?
Most children begin losing (or exfoliating) their primary, or baby, teeth at approximately age 6. The process usually continues through the early teenage years as 20 primary teeth are gradually replaced by permanent teeth. However, tooth development does not follow an exact calendar. Some healthy children begin losing teeth earlier or later than others.
Understanding the general timeline can help parents recognize when the timing of tooth loss is typical and when it may be helpful to speak with your pediatric dentist.
Why Do Children Have Baby Teeth?
Primary teeth are temporary, but they are not unimportant. They help children:
• Bite and chew food
• Develop clear speech
• Maintain space for permanent teeth
• Support normal jaw and facial development
• Smile and interact with confidence
Each primary tooth generally holds a position in the dental arch until the permanent tooth developing underneath is ready to emerge.
As the permanent tooth moves toward the mouth, it usually causes the root of the primary tooth to gradually dissolve. Dentists call this process root resorption. With less root structure holding it in place, the primary tooth becomes loose and eventually falls out.
This carefully timed transition is one reason pediatric dentists work to preserve primary teeth whenever possible. Losing a tooth much earlier than expected can sometimes affect the space available for the future permanent tooth.
When Do Children Start Losing Baby Teeth?
Most children lose their first baby tooth at approximately age 6, although they can begin to lose teeth around age 5 or 7. These ages all fall into a normal developmental range.
The first teeth to become loose are typically the lower central incisors—the two small teeth at the center of the lower jaw (mandible). These are often followed by the upper central incisors.
Children generally lose teeth in approximately the same order in which those teeth originally erupted. Still, the sequence and timing can vary.
A child’s tooth-loss timeline may be influenced by some of the following factors:
• The eruption timing of the first primary teeth
• Family patterns of dental development
• The position of the permanent teeth
• Available space in the upper (maxilla) and lower (mandible) jaws
• Previous dental injuries
• Early tooth loss caused by decay
• Individual growth and development
The American Dental Association’s eruption charts show typical age ranges rather than exact deadlines because normal tooth development varies among children. (American Dental Association)
The Typical Baby Tooth Loss Timeline
The following ranges provide a general guide. A child may lose an individual tooth somewhat earlier or later without having a dental problem.
Ages 6 to 8: The Front Teeth
The lower and upper front teeth are usually the first to fall out.
Typical ranges include:
• Lower central incisors: ages 6 to 7
• Upper central incisors: ages 6 to 7
• Lower lateral incisors: ages 7 to 8
• Upper lateral incisors: ages 7 to 8
During this stage, a child may have a combination of small primary teeth and larger permanent front teeth. This is called the mixed dentition because both primary and permanent teeth are present in the mouth at the same time. Temporary spacing, uneven edges, and differences in tooth size can be more noticeable during this time.
New permanent incisors often have small ridges along their biting edges. These ridges are called mamelons and are typically a normal feature of newly erupted teeth. These ridges often became less noticeable over time because of wear with normal chewing. The theory is that these ridges help the permanent tooth to erupt through the gum tissues.
Ages 9 to 12: Canines and Primary Molars
Developmentally, the next stage generally involves the primary canines and primary molars. It is important to note that there is often a noticeable gap of time between the loss of baby incisors and the loss of baby canines and molars.
Typical ranges include:
• Lower primary canines: ages 9 to 12
• Lower first primary molars: ages 9 to 11
• Upper first primary molars: ages 9 to 11
• Upper primary canines: ages 10 to 12
• Upper and lower second primary molars: ages 10 to 12
Primary molars are not replaced by permanent molars. They are replaced by permanent premolars, which are also called bicuspids.
By approximately ages 12 to 13, most children have lost all 20 primary teeth, although individual timing varies. (American Dental Association)
When Do Permanent Teeth Come In?
Permanent teeth often begin appearing at approximately the same time that children start losing their front primary teeth.
One important detail that surprises many parents is that the first permanent molars do not replace baby teeth. They actually erupt behind the baby molars.
The Six-Year Molars
The first permanent molars erupt behind the last primary molars at approximately ages 6 to 7. Because no baby tooth falls out before they appear, parents may mistake them for temporary teeth.
These molars are permanent and need careful brushing from the moment they begin to erupt.
Their deep grooves can retain plaque and food. Dr. Melissa may recommend dental sealants based on the child’s cavity risk and the shape of the teeth, especially the grooves on the chewing surfaces of the teeth. (As Dr. Melissa often says, “You keep these teeth until you are 150 years old”.)
Permanent Front Teeth
Permanent central incisors commonly emerge around ages 6 to 8. Lateral incisors generally follow between ages 7 and 9.
Permanent front teeth often look larger with slightly more color than the nearby primary teeth. This difference is typically normal. Primary enamel tends to look brighter and whiter, while permanent teeth may have a naturally warmer color.
Premolars and Canines
Permanent premolars and canines generally emerge between ages 9 and 12. The exact sequence can vary between the upper and lower jaws.
Twelve-Year Molars
Second permanent molars usually erupt behind the first permanent molars at approximately ages 11 to 13. Like the six-year molars, they do not replace primary teeth.
Third Molars (Wisdom Teeth)
The timing of third molars, commonly called wisdom teeth, is much more variable. They may emerge later in adolescence or early adulthood, remain impacted, or never develop. Dr. Melissa will monitor these teeth and refer to the oral and maxillofacial surgeon as necessary.
The American Dental Association and The American Academy of Pediatric Dentistry (AAPD) provide typical permanent-tooth eruption ranges but it is noted that children do not all follow an identical schedule. (American Dental Association)
What Is the Mixed-Dentition Stage?
The years when a child has both primary and permanent teeth are known as the mixed-dentition stage. This stage generally begins around age 6 and continues until approximately age 12.
Mixed dentition can make a child’s smile look temporarily uneven. Parents may notice:
• Large permanent teeth next to smaller primary teeth
• Temporary gaps
• Teeth erupting at slightly different speeds
• Mild crowding
• Permanent teeth appearing behind primary teeth
• Differences between the right and left sides
Some differences resolve naturally as the jaws grow and additional teeth emerge. Other differences may benefit from the monitoring by an orthodontist, and some may require early orthodontic treatment.
The American Association of Orthodontists (AAO) recommends a child’s initial orthodontic evaluation happen by age 7.
The American Academy of Pediatric Dentistry recommends evaluating the developing bite throughout childhood so concerns such as crossbites, significant crowding, missing teeth, extra teeth, unusual eruption patterns, or loss of space can be identified appropriately. (American Academy of Pediatric Dentistry)
Is It Normal for Adult Teeth to Grow Behind Baby Teeth?
A permanent lower front tooth may sometimes emerge behind a primary tooth that has not yet fallen out. Parents often call this a “double row” of teeth or “shark teeth.”
This appearance is relatively common during the transition to permanent lower incisors. In many cases, the primary tooth becomes increasingly loose and falls out without treatment. The tongue and normal growth often help guide the permanent tooth forward.
A pediatric dentist should evaluate the area when:
• The primary tooth is not becoming loose
• The permanent tooth has emerged significantly
• The child has pain or difficulty cleaning the area
• The pattern of eruption affects several teeth
• There appears to be very limited space or crowding
• The parent is unsure whether the tooth is primary or permanent
An extraction is not automatically necessary. The recommendation depends on the amount of movement in the primary tooth, the permanent tooth’s position, available space, and the child’s overall stage of development.
Should Parents Pull a Loose Baby Tooth?
In most cases, a naturally loose tooth should be allowed to fall out on its own.
A child may gently wiggle the tooth with a clean finger or their tongue. Normal eating and brushing will often complete the process once the tooth is ready.
Avoid tying a tooth to an object, pulling it forcefully, or removing it before it is very loose. Premature or forceful removal can cause unnecessary discomfort, bleeding, or damage to the surrounding gum tissue.
A tooth may be ready to come out when:
• It moves easily in several directions
• It causes little or no discomfort when moved
• Only a small amount of tissue appears to hold it in place
• The child can comfortably remove it with gentle pressure
After the tooth falls out, a small amount of bleeding is normal. Have the child bite gently on clean gauze or a clean paper towel for several minutes. Contact a dentist if bleeding is heavy, does not slow, or follows an injury rather than natural tooth loss.
What Should Parents Do After a Baby Tooth Falls Out?
The area may feel tender for a short time. Encourage the child to avoid repeatedly touching the opening with fingers.
Parents can also:
• Continue gentle brushing around the area
• Offer soft foods if the gum is sensitive
• Avoid very sharp or crunchy foods until the area feels comfortable
• Watch for prolonged bleeding, swelling, or increasing pain
• Help the child understand that the change is normal
The permanent tooth may already be visible, or it may take time to appear. Eruption does not always occur immediately after a primary tooth is lost.
Why Would a Baby Tooth Fall Out Too Early?
A primary tooth may be lost before the permanent tooth is ready because of:
• Tooth decay
• Dental infection
• A fall or other injury
• A tooth-development condition
• Removal required for another clinical reason
Early loss does not always create a problem, but the neighboring teeth may begin drifting into the open space. That movement can reduce room for the developing permanent tooth.
A pediatric dentist may recommend monitoring the space or, in selected cases, using a space maintainer. A space maintainer does not create new space. It helps preserve space that is already present until the permanent tooth is ready to erupt.
The need for a space maintainer depends on which tooth is lost, the child’s age, the stage of permanent-tooth development, the bite, and the amount of available space.
What If a Child Is Not Losing Teeth on Schedule?
A child who starts later than classmates does not necessarily have a problem. Tooth eruption and shedding occur within broad ranges.
However, your pediatric dentist may recommend an examination when:
• No primary teeth are present by age 1
• No primary teeth are loose by approximately age 7 or 8
• One side changes much earlier than the matching tooth on the other side
• A primary tooth remains long after the corresponding tooth has fallen out on the opposite side
• A permanent tooth is emerging in an unusual position
• A tooth appears blocked
• The child has fewer or more teeth than expected
• A primary tooth was previously injured
• There is pain, swelling, drainage, or gum discoloration
Possible explanations include ordinary variation, limited space, an unusually positioned permanent tooth, a missing permanent tooth, an extra tooth, or a primary tooth that is not resorbing normally.
An examination—and sometimes a carefully selected dental X-ray—can help a pediatric dentist determine what is occurring beneath the gums.
What If a Permanent Tooth Seems Crooked or Out of Place?
New permanent teeth do not always emerge in their final positions. Mild rotation, spacing, or crowding may change as nearby teeth erupt and the jaws continue to grow.
A pediatric dentist can monitor:
• Whether enough space is available
• Whether the upper and lower teeth meet properly
• Whether a tooth is trapped or displaced
• Whether an oral habit is affecting development
• Whether an orthodontic evaluation may be helpful
Not every irregularity requires immediate treatment. Monitoring development over time can help distinguish a temporary stage from a concern that may benefit from early attention.
How to Care for Newly Erupted Permanent Teeth
New permanent teeth need protection immediately. Their enamel continues maturing after eruption, and their grooves may be difficult for children to clean thoroughly.
Parents should help children:
- Brush twice daily with fluoride toothpaste.
- Clean along the gumline and behind newly erupted molars.
- Floss anywhere two teeth touch.
- Limit frequent exposure to sugary drinks and snacks.
- Drink water regularly.
- Attend preventive dental visits based on individual needs.
- Ask whether sealants are appropriate for permanent molars.
Many elementary-age children still need hands-on brushing help. The ability to complete other independent tasks does not always mean a child can clean every tooth effectively.
When Does a Loose Tooth Require Prompt Dental Care?
A baby tooth that becomes loose naturally is usually not an emergency. Contact a pediatric dentist promptly when a loose tooth follows:
• A fall, collision, or blow to the mouth
• Significant pain
• Facial or gum swelling
• Persistent bleeding
• Pus or drainage
• Fever combined with dental symptoms
• A change in tooth position
• A fracture
• Difficulty biting or closing the mouth
Do not intentionally pull a tooth loosened by trauma. The correct next step depends on whether the tooth is primary or permanent, the child’s age, and the type of injury.
A knocked-out Permanent tooth is a time-sensitive dental emergency.
A knocked-out Primary tooth should not be placed back into the socket because doing so could damage the developing permanent tooth. Contact a dental professional promptly for instructions.
When Do Children Lose Baby Teeth? The Bottom Line
Most children begin losing baby teeth at approximately age 6, starting with the lower or upper front teeth. Primary canines and molars usually follow between ages 9 and 12, and most children have transitioned to all permanent teeth by the early teenage years.
These ages are general ranges, not strict deadlines. A child may develop somewhat earlier or later than their peers and still have a healthy, normal developmental pattern.
Parents should pay attention to the sequence as well as the child’s age. Teeth that appear blocked, remain in place much longer than their matching partners, emerge in an unusual location, or become loose after an injury warrant professional evaluation.
Routine visits with Dr. Melissa and her team provide an opportunity to monitor tooth development, protect newly erupted permanent teeth, and identify concerns before they begin affecting the child’s bite or available space.
Frequently Asked Questions
What is the first baby tooth most children lose?
The lower central incisors—the two teeth at the center of the lower jaw (mandible)—are most often the first baby teeth to fall out. This usually occurs around ages 6 to 7.
Is age 5 too early to lose a tooth?
Some healthy children begin losing teeth at age 5, especially if their primary teeth erupted earlier than the typical 6 month mark. A dentist should evaluate a tooth that became loose because of decay or an injury rather than natural development.
Is age 7 too late to lose a first tooth?
Not necessarily. There is a broad normal range. Mention it during the child’s dental visit, particularly if no teeth are loose by age 7 or 8 or if there are other developmental concerns.
How long does it take a permanent tooth to appear?
The timing varies. A permanent tooth may be visible before the primary tooth falls out, appear soon afterward, or take several months to emerge. A pediatric dentist can evaluate a prolonged delay of tooth-eruption.
Why does my child have two rows of teeth?
A permanent tooth sometimes emerges behind a primary tooth that has not fallen out. This most often occurs with the lower front teeth but can happen in any quadrant of the mouth. Many cases resolve naturally, but an examination is appropriate if the primary tooth is not becoming loose or there appears to be limited space for the permanent tooth.
Do all baby teeth fall out?
Under typical development, all 20 primary teeth are eventually shed. Occasionally, a primary tooth remains because the permanent replacement is congenitally missing, delayed, blocked, or developing in an unusual position.
Do six-year molars replace baby teeth?
No. First permanent molars emerge behind existing primary molars and do not replace another tooth. They are permanent teeth and should be protected from the moment they appear in the mouth.
Should a loose tooth hurt?
Mild tenderness can occur, especially while eating. Significant pain, swelling, drainage, or pain that worsens is not expected with routine tooth loss and should be evaluated.
Can a cavity make a baby tooth fall out early?
Severe decay or infection can weaken a primary tooth or lead to early removal. Because premature loss can affect available space, a pediatric dentist should evaluate the area.
When should children have an orthodontic evaluation?
The American Association of Orthodontists recommends an orthodontic checkup no later than age 7. This does not mean treatment will be needed at that age. An early evaluation can identify developing bite or eruption concerns that may need monitoring. (American Association of Orthodontists)
References
References
1. Eruption Charts — American Dental Association, MouthHealthy.
2. Baby Teeth — American Dental Association, MouthHealthy.
3. Primary Tooth Development Chart — American Dental Association.
4. Management of the Developing Dentition and Occlusion in Pediatric Dentistry —
American Academy of Pediatric Dentistry, latest revision 2024.
5. Dental Growth and Development — American Academy of Pediatric Dentistry,
Reference Manual of Pediatric Dentistry.
6. Healthy Habits for Babies and Children — American Dental Association, MouthHealthy.
7. When Should Your Child See an Orthodontist? — American Association of
Orthodontists.
8. Management of Acute Dental Trauma — American Academy of Pediatric Dentistry.
