Removing an Implant Displaced into the Maxillary Sinus
When placing an implant, surgery must be carried out with careful consideration of each patient's individual oral condition. In particular, when placing an implant in the upper molar region, an anatomical structure called the 'maxillary sinus'…

Jayangdong Dental Clinic Recommendation – We Removed an Implant That Had Fallen into the Maxillary Sinus!
When proceeding with implant treatment,
each patient's individual oral condition
must be carefully considered
before surgery.
In particular, when placing implants
in the upper molar area,
an anatomical structure called
the 'maxillary sinus' must be
taken into careful consideration.
Today, we'd like to share a treatment case
from Seoul Hunhunhan Dental Clinic,
a recommended Jayangdong dental clinic,
in which an implant that had fallen into
the maxillary sinus was safely removed.
The patient we'd like to introduce
had undergone implant surgery at another dental clinic,
during which the implant displaced into
the space inside the upper jaw.
As the other clinic was unable to resolve the issue,
the patient came to our clinic.
After taking a panoramic X-ray,
we were able to confirm that
the implant fixture had fallen
into the 'maxillary sinus.'
Before introducing the treatment case,
let's briefly explain what the maxillary sinus is.
✔ What is the Maxillary Sinus?
Simply put, the maxillary sinus
is an air-filled space inside the upper jawbone—
think of it as an air pocket
located beside the nose, inside the cheekbone,
and above the roots of the upper molars.
It helps to picture a balloon-like empty space
above the upper molars,
with the tooth roots attached below it.
Because of the maxillary sinus,
when placing implants in the upper molars,
multiple factors must be carefully checked:
how much bone remains,
whether there is sufficient space for the implant,
and how close the implant placement site is
to the maxillary sinus.
Additionally, the maxillary sinus
is lined by a thin and delicate membrane.
If not handled with care,
the membrane can tear and cause complications.
As seen in this patient's case,
unexpected outcomes—
such as the implant falling into the sinus—
can unfortunately occur.
This is why sinus lift (maxillary sinus augmentation)
is a technically demanding procedure
that requires a cautious approach.
▼ Now, back to the case: ▼
To remove the implant
that had displaced into the maxillary sinus,
we performed a detailed analysis
using 3D-CT imaging.
We carefully confirmed
the exact location of the displaced implant,
then planned a lateral approach—
accessing the maxillary sinus
through the side wall of the alveolar bone
to carefully retrieve the implant.
(Lateral approach)
* The lateral approach has the advantage
of allowing direct visualization of the interior,
but because the thin sinus membrane
and surrounding tissues must not be damaged,
experience and refined technique are essential.
Fortunately, the implant was successfully removed,
and bone grafting was performed
at the site of removal.
The patient had been very worried,
but expressed gratitude,
saying they were relieved
that the implant had been successfully removed.
✔ Before → After
This concludes the treatment case
from Seoul Hunhunhan Dental Clinic,
a recommended Jayangdong dental clinic,
in which we removed an implant
that had fallen into the maxillary sinus
during surgery at another clinic.
At our clinic, we also see cases
that other clinics have been unable to resolve,
or situations where treatment
has been deemed difficult due to poor conditions.
We encourage you to visit us
for a thorough examination
to discuss the appropriate treatment direction.
If you have a dental concern that has been difficult to resolve, Seoul Hunhunhan Dental Clinic is here to help. :)
* All case photos are published with the patient's consent in accordance with Articles 23 and 56 of the Medical Service Act.
* All treatment photos are of patients treated at our clinic.
* All treatment photos are of the same individual and were taken under the same conditions.
* Side effects may occur after procedures or surgery depending on individual differences; please consult sufficiently with your dental professional.
Seoul Hunhunhan Dental Clinic 4F, 361 Achasan-ro, Gwangjin-gu, Seoul Check in to this blog Other posts about this location