OTHER DENTAL CONCERNS · MIDTOWN MANHATTAN
Impacted Tooth in NYC? Why Hasn’t My Permanent Tooth Come In?
An impacted tooth is a position or eruption problem not an automatic extraction diagnosis. A permanent tooth may stay beneath the gum because there is not enough room, it is following an unusual path, a local obstruction is present, or the tooth has become truly impacted. Upper canine teeth are an especially important non-wisdom example.
Baby tooth still present?
It may be a clue that the permanent successor is delayed, absent, ectopic or impacted.
One canine never erupted?
Imaging can show whether space, position or an obstruction is the problem.
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Not every tooth that is still under the gum is truly impacted. A tooth may simply be unerupted or delayed. The distinction depends on development, position, available space and dental imaging.
20-SECOND EXPLANATION
What Is an Impacted Tooth?
An impacted tooth has not erupted into its expected functional position because its path is blocked, there is not enough space, or its direction/position prevents normal eruption.
01
Fully impacted
The tooth remains completely beneath the gum and/or bone.
02
Partially erupted
Part of the crown is visible, but normal eruption has not completed.
03
Sometimes symptom-free
Many impacted teeth are found on an exam or X-ray before the patient feels pain.
WHAT MIGHT YOU NOTICE?
Common Clues That a Permanent Tooth Has Not Erupted Normally
Some impacted teeth cause no symptoms at all, so eruption asymmetry and retained primary teeth can be more useful clues than pain.
One permanent canine never appeared
The matching tooth erupted on the other side, but one eyetooth remains missing from the arch.
A baby tooth remains much longer than expected
The permanent successor may be delayed, absent, ectopic or impacted.
A hard bulge is felt under the gum or palate
An unerupted tooth may lie close to the tissue surface, but imaging is still needed to locate it accurately.
The visible gap is too small
Crowding or loss of arch space may limit a tooth’s eruption path.
The tooth was found unexpectedly on X-ray
Impacted teeth can remain quiet beneath the gum and bone for years.
A partly erupted area becomes swollen
Plaque and food can collect around a partially erupted tooth and cause local inflammation.
CONDITION-SPECIFIC INFOGRAPHIC
Why Hasn’t This Permanent Tooth Come In?
A missing tooth in the arch can reflect several different eruption problems and not all require the same treatment.
Not enough space
Crowding or reduced arch space may block the tooth’s expected path.
Abnormal eruption path
The tooth may be angled toward the palate, lip side or neighboring roots.
Retained baby tooth clue
The primary tooth may remain because the permanent successor is delayed, absent or impacted.
Local obstruction
An extra tooth or other localized obstruction can interfere with eruption.
Wisdom-tooth impaction
Third molars are common impacted teeth but belong to a separate treatment pathway.
The Tooth, Position and Nearby Structures Determine the Next Step
Some teeth are monitored, some need space created, some need an obstruction removed, and selected canines are surgically exposed and guided orthodontically.
Retained baby tooth ≠ automatic obstruction
It may be the result of abnormal permanent-tooth eruption.
No pain does not prove “no issue”
Adjacent-root changes or cystic changes can occasionally be silent.
Wisdom teeth are separate
Third-molar-specific infection and extraction belong on the next DDD condition page.
Independent orthodontic guidance
The American Association of Orthodontists describes impacted teeth as teeth that do not erupt normally because of limited space, an incorrect path or an obstruction, and notes that some cases are monitored while others may need orthodontic space creation, surgical exposure or removal.
AAO - What Is an Impacted Tooth?
A COMMON NON-WISDOM IMPACTION
What Is an Impacted Canine / Eyetooth?
Upper permanent canines are among the most clinically important non-wisdom teeth that can become impacted.
Why Canines Matter
Canines occupy the corners of the dental arch and contribute to smile form and bite guidance. If one fails to erupt, the primary canine may remain or a visible gap may persist.
- The canine can lie toward the palate, toward the lip side or deeper in the supporting bone.
- A retained primary canine can be the first visible clue.
- The tooth may be found during orthodontic or routine dental imaging.
Can It Affect Neighboring Roots?
Some impacted canines lie close enough to nearby incisor roots to be associated with root resorption. This is a possible complication not an inevitable outcome.
- Root resorption can be asymptomatic.
- Imaging helps determine actual proximity and whether damage is present.
- Early recognition can preserve more management options.
A COMMON PATIENT QUESTION
Why Do I Still Have a Baby Tooth?
A retained primary tooth is a clue that should be investigated—not a tooth that should automatically be removed.
POSSIBLE EXPLANATION
The Permanent Tooth Is Present but Delayed or Impacted
The permanent successor may be developing in an abnormal position, lacking space or following an ectopic path.
- The primary tooth may remain because the permanent tooth never followed the normal eruption path.
- Removing it without imaging can create an unnecessary gap.
- Space planning may be needed before any extraction.
ANOTHER POSSIBILITY
The Permanent Successor May Be Absent
Some people are congenitally missing a permanent tooth, so a healthy retained primary tooth can remain useful for a period of time.
- Imaging confirms whether a permanent successor exists.
- The primary tooth’s health, roots and surrounding bone matter.
- Future orthodontic or replacement planning is individualized.
IMPORTANT NOTE
The baby tooth is not always “blocking” the adult tooth. It can remain because the permanent tooth is missing or because the permanent tooth is not erupting normally.
IMPACTED TOOTH EXPLAINER
Can an Impacted Tooth Cause Problems Even Without Pain?
Yes. Some impacted teeth stay quiet for a long time, while others can affect nearby teeth, surrounding tissues or eruption patterns. The key first step is identifying whether the tooth is truly impacted or whether it has erupted into the mouth but is simply crooked or crowded.
AN IMPACTED TOOTH IS NOT ALWAYS THE SAME AS A CROOKED TOOTH
First determine whether the tooth has erupted into the mouth or remains partly or fully trapped beneath the gum or bone. That difference changes the diagnostic pathway, imaging needs and possible treatment options.
Check whether the tooth has erupted
A tooth that is visible in the mouth may still be crowded, rotated or out of alignment, but that alone does not mean it is impacted.
Look for possible local complications
An impacted tooth may remain symptom-free, but in some cases it can affect adjacent roots, contribute to local inflammation or be associated with cystic change.
Use imaging before deciding treatment
The position of the tooth, its effect on nearby structures and the available space all help determine whether monitoring, orthodontic guidance, exposure/traction or extraction is appropriate.
Crooked / crowded tooth
The tooth has erupted into the mouth but is tilted, rotated or out of alignment. This is usually an alignment or space issue, not automatic impaction.
Impacted tooth
The tooth has not erupted normally into the dental arch and remains partly or fully beneath the gum or bone because eruption is blocked or the path is unfavorable.
May require imaging
An impacted tooth often needs imaging to determine its exact location, position and relationship to nearby teeth and roots.
Neighboring-root resorption
In some situations, especially with ectopic canines, pressure or proximity to a neighboring tooth may contribute to root resorption.
Cystic change
A dentigerous cyst can occasionally form around the follicle of an unerupted tooth. This is uncommon and requires proper diagnosis.
Local inflammation
A partly erupted tooth may trap plaque and bacteria, making the area harder to clean and more prone to irritation or infection.
Can coexist with crowding
A patient may have both crowding and impaction at the same time. One does not rule out the other.
Possible next steps
Monitoring, space creation, orthodontic treatment, surgical exposure with traction, or extraction may be considered depending on the tooth and surrounding structures.
BAD-BREATH EVALUATION
How Does a Dentist Evaluate Persistent Halitosis?
The goal is not to find a stronger mint. It is to identify the most likely source and decide whether the problem belongs in dentistry or another area of healthcare.
IMPORTANT NOTE
If the oral exam does not explain the odor: referral to a primary care clinician or ENT may be more appropriate than continuing dental treatment without a clear target.
Map the timing
Morning only, after certain foods, after medication, or persistent through the day despite hygiene?
Check tongue and oral hygiene
The clinician looks for coating, plaque retention and areas that are difficult to clean.
Evaluate gums and periodontal pockets
Bleeding, recession, pocketing, tooth mobility and bone support help identify periodontal disease.
Look for local tooth / appliance problems
Food traps, larger cavities, broken teeth, drainage, dentures and other removable appliances are assessed.
Review dry mouth and medical context
Medication history, saliva symptoms, tobacco and relevant medical concerns help determine whether another clinician should be involved.
CAN JAWBONE GROW BACK?
Disease Control, Regeneration and Bone Grafting Are Three Different Things
The phrase “grow bone back” can be misleading because different procedures pursue different biological goals.
STOP PROGRESSION
Periodontal Disease Control
Scaling/root planing, periodontal maintenance and selected surgical or laser approaches aim to control inflammation and preserve remaining support. They do not automatically recreate all lost bone height.
SELECTED DEFECTS
Periodontal Regeneration
Some localized periodontal defects may be candidates for regenerative techniques. Anatomy, defect shape and disease control influence whether regeneration is realistic.
BUILD IMPLANT-SITE VOLUME
Bone Grafting / Ridge Augmentation
Bone or bone-substitute material can be used as part of rebuilding a deficient ridge for selected implant or restorative plans.
UPPER POSTERIOR JAW
Sinus Augmentation
When upper-back implant sites have insufficient vertical bone beneath the maxillary sinus, selected patients may be considered for sinus augmentation.
Professional guidance on rebuilding deficient implant sites
The American Academy of Periodontology describes ridge modification as filling deficient ridge areas with bone or bone substitute to improve implant-site anatomy. AAOMS describes grafts as replacement or scaffold materials used to create adequate bone quantity and quality where needed.
AAP - Ridge Modification
AAOMS - Bone Grafting & Membranes
DENTURE-FIT EVALUATION
How Does a Dentist Evaluate Loose Dentures?
The examination should evaluate the mouth and prosthesis together- not just add adhesive or grind the acrylic until it feels better.
| What May Be Loose | What You May Notice | What Needs Checking |
|---|---|---|
| Attachment Insert | The overdenture no longer clicks or holds as firmly as before. | Retention inserts/housings may be worn and require professional maintenance. |
| Denture Base / Prosthesis | Rocking persists even though attachments engage. | Base adaptation, fracture, bite and tissue support should be evaluated. |
| Abutment / Prosthetic Component | One side feels mechanically different or makes a new clicking sensation. | Professional component inspection; do not tighten anything yourself. |
| Implant Fixture Itself | The implant post appears to move relative to the jaw. | This is not expected and needs prompt clinical evaluation. |
PROTECT THE AREA WHILE YOU WAIT
What Can You Safely Do at Home?
Home care can protect surrounding teeth and gums, but it cannot change the position of a buried tooth.
Helpful short-term steps
- Do not keep wiggling or pressing on the tooth.
- Avoid hard, crunchy or sticky foods on that area until it is evaluated.
- Continue gentle brushing with a soft-bristled toothbrush.
- Keep plaque control as comfortable as possible rather than abandoning cleaning because the gums bleed.
- After trauma, follow the dentist's instructions and use an external cold compress for swelling when appropriate.
Do not try to stabilize it yourself
- Do not use superglue or household adhesives.
- Do not tie the tooth to neighboring teeth with thread, wire or improvised splints.
- Do not force a displaced tooth back into position without professional guidance.
- Do not attempt to extract the tooth at home.
- Do not place aspirin directly against the gum tissue.
WHEN IMPACTED TEETH NEED FASTER ATTENTION
When Should an Unerupted or Impacted Tooth Be Checked?
Most asymptomatic impactions are not emergencies, but eruption asymmetry should still be evaluated and pain, swelling, or drainage deserves faster care.
A permanent tooth has not appeared while its counterpart has erupted.
Routine but important evaluation can clarify whether the tooth is delayed, ectopic, absent, or impacted.
New swelling, tenderness, or a painful gum area develops.
A partially erupted or impacted tooth can occasionally become inflamed or infected.
Pus, drainage, or a persistent bad taste appears.
These findings need prompt dental evaluation rather than continued observation at home.
A neighboring tooth becomes newly painful or mobile.
Imaging may be needed to check whether the impacted tooth is affecting nearby structures.
An orthodontic traction attachment or wire develops a problem.
Contact the treating orthodontic/dental team so the active treatment can be checked.
Rapid facial swelling or difficulty breathing/swallowing?
Seek emergency medical care immediately instead of waiting for a routine dental visit.
MEET YOUR DENTIST
Experienced Care Starts with the Right Evaluation
Dr. Oleg Klempner brings more than 30 years of experience caring for patients throughout New York City. At Diamond District Dental NYC, every recommendation starts with a careful evaluation of your dental health, symptoms, and individual needs so you can understand what is happening and what your next step may be.
30+ Years
Serving NYC
NYU
College of Dentistry
Midtown
10 W 46th Street
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Teeth, gums & bite
Common Questions
Questions Patients Ask About Impacted Teeth
An impacted tooth is one that has not erupted into its expected functional position because its path is blocked, there is inadequate space, or its position prevents normal eruption.
Possible reasons include delayed eruption, lack of space, an abnormal eruption path, a retained primary tooth, an extra tooth or another local obstruction. Imaging is needed to distinguish them.
Yes. Some permanent teeth remain partly or fully beneath the gum and bone into adulthood and may be discovered incidentally on dental imaging.
An impacted canine is a permanent canine commonly an upper eyetooth that has not erupted normally into the dental arch and remains partly or fully beneath the gum/bone.
Contributing factors can include limited arch space, an abnormal eruption pathway, tooth position, local obstruction and developmental/genetic influences.
In selected cases, an impacted canine positioned close to adjacent roots can be associated with root resorption. This is not inevitable and requires imaging to diagnose.
Selected impacted teeth especially canines can be guided using orthodontic traction after appropriate space is created and the tooth is surgically exposed when needed. Success is not guaranteed in every case.
The gum over the impacted tooth is opened so the crown can be accessed; an orthodontic attachment may then be bonded so the tooth can be guided gradually toward the arch.
No. Removal is considered when alignment is unrealistic, pathology or recurring problems are present, nearby structures are at unacceptable risk, or the treatment burden outweighs expected benefit.
The permanent successor may be absent, delayed, ectopic or impacted. The primary tooth should be evaluated before anyone assumes it needs extraction.
Yes. Adults can be evaluated for monitoring, exposure/traction or alternative treatment. Predictability varies with tooth position, bone, root development and ankylosis risk.
RELATED DENTAL CONCERNS
Where Impacted-Tooth Questions Can Connect Next
The condition page stays focused on eruption problems while routing alignment, replacement and wisdom-tooth-specific concerns separately.
Crooked / Crowded Teeth
For teeth that have erupted but lack adequate alignment or arch space.
Missing Teeth
For cases where the permanent tooth is absent from function and replacement becomes part of the plan.
Tooth Pain
For pain that may have another dental cause and should not be assumed to come from impaction.
Problematic Wisdom Teeth
For third-molar pain, pericoronitis, decay, adjacent-tooth risk and extraction decisions.
FIND THE TOOTH BEFORE CHOOSING THE TREATMENT
Still Have a Baby Tooth or a Permanent Tooth That Never Came In?
The first useful step is to identify whether the permanent tooth exists, where it is positioned, how much space is available and whether it is affecting neighboring structures.