Duration: 9 minutes, 14 seconds

Author: Dr. Francesco Mintrone

Treatment of Lower Anterior Implant Dehiscences with GBR and Layered Bone Graft

In recent years, dental implants have become the go-to solution for replacing missing teeth due to their durability and natural appearance. However, complications can occasionally arise, such as lower anterior implant dehiscences. Dehiscences refer to the exposure of the implant thread due to insufficient bone coverage. This article discusses the treatment of lower anterior implant dehiscences and the use of guided bone regeneration (GBR) and layered bone graft technique to restore the bone volume and ensure successful integration of the implant.

Understanding Lower Anterior Implant Dehiscences

Lower anterior implant dehiscences occur when the bone surrounding the implant fails to provide adequate coverage, leaving the implant thread exposed. This condition can lead to aesthetic concerns, compromised stability, and potential complications such as peri-implantitis. Immediate action must be taken to address this issue and prevent further complications.

The Role of Guided Bone Regeneration (GBR)

Guided bone regeneration (GBR) is a technique widely used in implant dentistry to promote bone regeneration and enhance the success of the implant treatment. GBR involves the use of a barrier membrane to protect the defect area from soft tissue ingrowth, allowing for undisturbed bone formation. In the case of lower anterior implant dehiscences, GBR is a vital component of the treatment plan.

The Procedure

The treatment of lower anterior implant dehiscences with GBR and layered bone graft typically involves the following steps:

  1. Creating a Flap: The first step is to create a flap to access the dehisced area. The flap allows for adequate visibility and access to the defect.
  2. Placing a GBR Membrane: Once the flap is created, a GBR membrane is carefully placed over the exposed implant thread. This membrane acts as a barrier, preventing the invasion of soft tissue into the defect area.
  3. Filling the Defect: After placing the GBR membrane, the next step is to fill the defect with bone graft material. Layered bone grafting technique is used to ensure optimal bone volume and integration of the implant.
  4. Membrane Closure: The GBR membrane is then secured in place, ensuring complete coverage of the defect area. This closure is crucial for proper bone regeneration.
  5. Primary Closure: Finally, the flap is repositioned and sutured back in place, providing stability and protection to the treated area.

Success Factors

The success of the treatment relies on several factors. Firstly, the stability of the implant is crucial. The implant must be well-integrated into the bone and show no signs of mobility. Additionally, the GBR membrane should be properly positioned and maintained throughout the healing process to prevent potential complications. Proper post-operative care, including oral hygiene practices and regular follow-ups, is essential for successful treatment outcomes.


Treatment of lower anterior implant dehiscences with GBR and layered bone graft is a reliable and effective technique to address this common dental complication. By ensuring sufficient bone volume around the implant, this treatment promotes stability and integration, allowing for long-term success. It is essential for individuals experiencing lower anterior implant dehiscences to consult with a qualified dental professional to determine the most suitable treatment approach.

Frequently Asked Questions (FAQs)

1. How long does it take for the bone to regenerate after the GBR procedure?

After the GBR procedure, it typically takes several months for the bone to fully regenerate. However, individual healing times can vary.

2. Are there any risks or complications associated with GBR and layered bone graft procedures?

Like any surgical procedure, GBR and layered bone graft procedures carry a minimal risk of complications such as infection, bleeding, or graft failure. However, with proper planning and skilled execution, these risks can be minimized.

3. How long is the recovery period after the treatment?

The recovery period after the treatment varies from patient to patient. Generally, it takes about a few weeks for the initial healing, and full recovery can take several months.

4. Can implants be placed immediately after the treatment?

Implants are typically not placed immediately after the GBR and layered bone graft procedure. It is essential to allow the bone to regenerate and create a stable environment for successful implant placement.

5. What can I expect in terms of aesthetic outcomes after the treatment?

With proper treatment and healing, the aesthetic outcomes after the treatment of lower anterior implant dehiscences are generally favorable. The goal is to achieve a natural-looking result that seamlessly blends in with the surrounding teeth.

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