If you are missing teeth in the back of your lower jaw, you may not have enough bone above the inferior alveolar nerve to support a standard dental implant. Placing an implant too close to this nerve can put sensation in your lower lip, chin, and teeth at risk, so oral surgeons look for other ways to build a safe, stable foundation. Nerve repositioning surgery is one of the more advanced options for these situations, since it carefully moves the nerve to open space for a longer implant that can potentially offer better long-term stability than a standard length implant would in that same area.
Legacy Oral Surgery provides nerve repositioning for Staten Island patients whose jaw anatomy makes standard implant placement difficult. Our experienced Staten Island oral surgeons evaluate each patient’s bone anatomy, nerve position, and treatment goals carefully before recommending this procedure, since it is a more involved approach than most implant surgeries and is not the right fit for everyone.
Why Nerve Repositioning May Be Needed for Lower Jaw Implants
The inferior alveolar nerve runs through a canal inside your lower jawbone and provides sensation to your lower lip, chin, and the teeth on that side of your mouth. When back teeth have been missing for a long time, the jawbone in that area can gradually lose height, and the ridge where a dental implant would be placed may end up sitting very close to the nerve canal.
When there is not enough bone height above the nerve, a few different paths are usually considered. Shorter implants can sometimes work, though they may not offer the same long-term stability as longer implants in a molar or premolar site that carries heavy chewing forces. Bone grafting can add height to the ridge over time, but it adds healing time to the overall treatment plan and is not always enough on its own.
Nerve repositioning surgery creates room for a longer implant by carefully moving the nerve out of the way during surgery, rather than only adding bone above it. This approach tends to come up for patients who need implants longer than about 10 to 11 millimeters, who are missing multiple back teeth, or who need a level of implant stability that shorter implants may not reliably provide.
Evaluating Jaw Anatomy With CT Imaging and Surgical Planning
Nerve repositioning is planned around detailed three-dimensional imaging rather than a two-dimensional X-ray alone. A cone beam CT scan maps the exact path of the inferior alveolar nerve canal through the jawbone, along with the thickness and density of the surrounding bone, so your surgeon can view the anatomy from every angle before any incision is made.
This imaging is used to measure the safety margin between the nerve and the planned implant site, map out the surgical approach to the nerve, and decide on an implant length and position suited to your particular anatomy. Careful imaging and planning at this stage is one of the main ways risk is managed in a procedure that involves working directly around a major nerve.
How Nerve Repositioning Surgery Is Performed
Nerve repositioning is a technically demanding procedure that calls for extensive surgical training in oral and maxillofacial surgery. The procedure begins with a carefully planned incision that gives access to the section of jawbone covering the nerve canal, with an emphasis on clear visualization while limiting disruption to the surrounding tissue.
The inferior alveolar nerve is then gently freed from its canal and moved aside to open space for the implant. This step requires meticulous technique, since the goal is to protect the nerve while still creating enough clearance for the implant being placed. Magnification and purpose built instruments are typically used throughout this part of the surgery.
Once the nerve has been moved, the dental implant is placed in the newly available space, and the nerve is repositioned and supported, often with a protective material to help maintain its new position during healing. The surgical site is then closed, and the procedure is typically completed in a single visit under sedation.
Surgical Technology That Supports Precision
Modern nerve repositioning surgery benefits from computer guided surgical planning software, high resolution imaging, and magnification tools built for this kind of close nerve work. Planning the surgical approach virtually before the procedure begins can help confirm implant position and length ahead of time, rather than adjusting mid-surgery.
Benefits of Nerve Repositioning for Implant Placement
For the right candidate, nerve repositioning can offer some meaningful advantages over shorter implants or bone grafting alone.
These benefits need to be weighed against the risks discussed below, which is why a thorough evaluation comes before any recommendation for this procedure.
Alternatives to Nerve Repositioning
Nerve repositioning is not the only option when there is limited bone above the inferior alveolar nerve, and in many cases a less involved approach may be considered first.
Your surgeon can walk you through which of these options may be appropriate for your anatomy and treatment goals during a consultation.
Risks and Potential Complications of Nerve Repositioning
Nerve repositioning is considered one of the more involved procedures in implant dentistry, and it carries risks that are important to understand clearly before moving forward. The most significant risk is a change in sensation, ranging from temporary numbness to, less commonly, a longer lasting or permanent change in feeling in the lower lip, chin, or teeth on the side of the surgery. Most patients notice some degree of numbness immediately after surgery, and in many cases sensation gradually improves over the following weeks and months.
Other risks can include bleeding, infection, and, in rare cases, a fracture of the thinned jawbone during or after surgery. There is also a possibility that the implant itself may not integrate successfully, as with any implant procedure.
In a 2021 study published through the National Institutes of Health that followed patients treated with inferior alveolar nerve repositioning and implant placement, implants had a 95.8 percent survival rate over an average follow up period of about five years. While nearly all patients had some temporary numbness after surgery, only a small number reported mild, lingering sensory changes at long-term follow up.
Risk Factors That May Influence Nerve Sensation Outcomes
Several factors can affect how much sensation changes after nerve repositioning and how quickly it may resolve. The amount of bone remaining above the nerve canal before surgery, and how much the nerve needs to be moved to create space for the implant, both play a role in how much manipulation the nerve experiences during surgery.
Health conditions that can slow nerve healing, such as poorly controlled diabetes, or habits like smoking, may also affect recovery time. Patients who have had previous surgery in the same area of the jaw, or who have unusual nerve canal anatomy, may also face a somewhat higher level of risk, which is part of why detailed imaging and an individualized evaluation matter so much before this procedure is recommended.
What Happens if Thin Jawbone Goes Untreated
If a lower jaw does not have enough bone above the nerve and nerve repositioning is not pursued, a patient’s options generally narrow to shorter implants, staged bone grafting, or a removable prosthetic. Shorter implants placed in this area may not always hold up as well over time under the chewing forces of the back teeth, and in some cases, they may need to be replaced sooner than a longer implant would.
Jawbone in this area can also continue to lose height over time when it is not being stimulated by a tooth root or an implant, which may make future implant treatment more complex rather than less. Patients who choose a removable partial denture instead of an implant may notice reduced chewing efficiency on that side, which is worth discussing with your surgeon as part of weighing your options.
Recovery and Long-Term Outcomes After Nerve Repositioning
Recovery from nerve repositioning typically involves initial healing of the surgical site over the first couple of weeks, along with a gradual return of sensation over the following weeks and months. Most patients notice some numbness or altered sensation in the lower lip and chin immediately after surgery, which tends to improve as the nerve recovers from the manipulation involved in the procedure.
Pain after nerve repositioning is generally manageable with prescribed medication, and swelling is usually moderate, resolving within the first week or so. The overall timeline for healing and implant integration generally follows a similar pattern to standard implant surgery, often requiring around 3 to 4 months before a final restoration can be placed, with a temporary restoration sometimes used in the meantime.
Nerve Repositioning for Staten Island Patients
Legacy Oral Surgery’s Staten Island office is located at 3377 Richmond Ave in the Eltingville neighborhood on the borough’s South Shore, convenient for patients coming from Annadale, Great Kills, Huguenot, Tottenville, and other nearby South Shore communities. A consultation typically starts with a review of your dental and health history, followed by CT imaging to evaluate whether nerve repositioning, a shorter implant, bone grafting, or another option best fits your anatomy.
Frequently Asked Questions About Nerve Repositioning in Staten Island
Why might I need nerve repositioning before getting dental implants in my lower jaw?
Nerve repositioning may be recommended when there is not enough bone above the inferior alveolar nerve to safely place a standard length implant in the back of your lower jaw. Moving the nerve creates the space needed for a longer implant instead of relying only on a shorter implant or extensive bone grafting.
Will nerve repositioning cause permanent numbness in my lip or chin?
Most patients experience some temporary numbness in the lower lip and chin after surgery, which in many cases improves over the following weeks and months. A permanent change in sensation is possible but affects a smaller percentage of patients, and your surgeon will go over this risk with you in detail before recommending the procedure.
What imaging is used to plan nerve repositioning surgery?
Your surgeon will typically use a cone beam CT scan to map the exact position of the inferior alveolar nerve canal and the surrounding bone in three dimensions. This detailed imaging is used to plan the surgical approach and choose an implant length and position suited to your anatomy.
Are there alternatives to nerve repositioning for a thin lower jaw?
Yes. Depending on your anatomy, alternatives can include shorter implants, staged bone grafting or ridge augmentation, angled implant placement that avoids the nerve canal, or a removable partial denture or bridge instead of an implant. Your surgeon can help you weigh the tradeoffs of each option.
How long does recovery from nerve repositioning take?
Initial healing of the surgical site typically takes a few weeks, while any altered sensation in the lip or chin tends to improve gradually over several months. Full healing and integration of the implant generally follows a similar timeline to standard implant surgery, often around 3 to 4 months before a final restoration is placed.
Is nerve repositioning covered by dental insurance?
Coverage varies by insurance plan and by whether the procedure is classified as medically necessary in your specific case. Our team can help you understand your estimated costs and check your benefits before you move forward with treatment.
What happens if I don’t have nerve repositioning when my jawbone is too thin?
Without nerve repositioning, your options generally shift toward shorter implants, staged bone grafting, or a removable prosthetic, each of which comes with its own tradeoffs. Jawbone in the area can also continue to lose height over time, which may make future treatment more involved.
Is nerve repositioning performed at the same time as implant placement?
In many cases, yes. The implant is often placed during the same surgical visit once the nerve has been moved and the necessary space has been created, though your surgeon will confirm the specific plan for your case during your consultation.
Schedule a Nerve Repositioning Consultation in Staten Island
Legacy Oral Surgery brings more than 40 years of combined professional experience and over 7,000 patients cared for each year to complex implant cases across Staten Island, including situations where nerve repositioning, bone grafting, or another approach may be the right fit. Our team works through detailed imaging and planning with every patient before recommending a surgical approach.
If you have been told you may not have enough bone for a standard implant in your lower jaw, nerve repositioning may be one of several options worth discussing with an oral surgeon. Complete our online contact form to schedule a consultation and find out which approach may work best for your anatomy.
