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3-D-Augmentation of an Alveolar Ridge With a Individualized Allograft Bone Block

The operator Dr. Markus Schlee, Forchheim/Germany, augments the alveolar ridge in the molar region of the mandibula. For this purpose, a ready-made bone block allograft is tailored and applied. The use of the block allograft spares the patient the harvesting of autogenous bone within the surgery, and consequently makes the process more comfortable and shorter for the patient. The commentary text originates from Professor Dr. Hannes Wachtel, Munich/Germany.

The initial situation shows an immense bone loss in the molar region of the left maxilla. In order to augment the alveolar ridge in this region, Dr. Markus Schlee applies a cancellous bone block allograft. The use of the block allograft spares the patient the harvesting of autogenous bone within the surgery, and consequently makes the process more comfortable and shorter for the patient. First, a full thickness flap is elevated to gain access to the alveolar bone.

Then the ready-made block allograft, which was soaked in water for 5-10 minutes, is trimmed and shaped to be fitted to the alveolar bone. The cancellous structure of the bone block is important for blood vessels to develop. The bone allograft needs to be stably fixated with screws which are 1,5 mm in length and diameter. A collagen membrane and a fibrin scaffold containing platelet-derived growth factors are placed on top. To promote primary wound healing, it is important to replace and secure the full thickness flap by closely adapting the wound edges with microsurgical sutures.

3-D-Augmentation of an Alveolar Ridge With a Individualized Allograft Bone Block

The operator Dr. Markus Schlee, Forchheim/Germany, augments the alveolar ridge in the molar region of the mandibula. For this purpose, a ready-made bone block allograft is tailored and applied. The use of the block allograft spares the patient the harvesting of autogenous bone within the surgery, and consequently makes the process more comfortable and shorter for the patient. The commentary text originates from Professor Dr. Hannes Wachtel, Munich/Germany.

The initial situation shows an immense bone loss in the molar region of the left maxilla. In order to augment the alveolar ridge in this region, Dr. Markus Schlee applies a cancellous bone block allograft. The use of the block allograft spares the patient the harvesting of autogenous bone within the surgery, and consequently makes the process more comfortable and shorter for the patient. First, a full thickness flap is elevated to gain access to the alveolar bone.

Then the ready-made block allograft, which was soaked in water for 5-10 minutes, is trimmed and shaped to be fitted to the alveolar bone. The cancellous structure of the bone block is important for blood vessels to develop. The bone allograft needs to be stably fixated with screws which are 1,5 mm in length and diameter. A collagen membrane and a fibrin scaffold containing platelet-derived growth factors are placed on top. To promote primary wound healing, it is important to replace and secure the full thickness flap by closely adapting the wound edges with microsurgical sutures.

About the expert

Markus Schlee

Dr. Markus Schlee

Lecturer at Steinbeis University Berlin for the Master's course of DGI, lectureship of APW and DGI

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About the expert

Hannes Wachtel

Prof. Dr. Hannes Wachtel

Specialist for periodontology at the Bolz/Wachtel Dental Clinic

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