Ridge preservation

  • Ridge preservation
    Defect of the alveolar wall
  • Ridge preservation
    Buccal wall protection with a membrane
  • Ridge preservation
    Socket filling with a grafting material
  • Ridge preservation
    Socket covering with a membrane
  • Ridge preservation
    Consolidation of the grafting material
  • Ridge preservation
    Socket healing
  • Ridge preservation
    Socket bony regeneration
The term "ridge preservation" refers to the treatment of alveoli with 1-3 intact walls, i.e., at least one wall presents a defect caused by a dehiscence or fenestration. Bone dehiscences or fenestrations that are present at the time of extraction, particularly if located in the facial or lingual walls, are most likely to be filled by fibrous reparative tissue, which may occupy a considerable space in the socket. This leads to a reduction of bone volume, which complicates the implant placement. To protect the wall and avoid these issues, a barrier membrane, such as the Jason® membrane, can be applied within the socket.

Membrane exposure

Exposure of the Jason® membrane (or collprotect®) should be avoided. This may promote a fast bacterial resorption, which may lead to a significant barrier function reduction. If dealing with an unstable soft tissue and/or with a likely wound dehiscence, it is recommended to cover the membrane with a Jason® fleece (soaked in antibiotics, where applicable). This provides a strong protection of the healing area.

Buccal wall defect after tooth extraction

The unique properties of the Jason® membrane, such as low thickness, stiffness under dry conditions, and slow degradation, ensure an easy application and an undisturbed healing of the socket and defect. When dealing with minor bony defects, the collprotect® membrane represents a valid alternative.

In order to promote the osseous regeneration, the socket should be filled with an osteoconductive bone grafting material that acts as a space holder and scaffold for precursor cells; these can then migrate into the socket and defect and mature into osteoblasts, thus triggering the construction of new bone matrix. To achieve this, a mixture of cerabone® and maxgraft® is an excellent option. While the bovine bone ensures a long-term volume stability of the grafted site, the allogenic granules consisting of mineralized collagen promote a fast integration and remodeling, thus supporting the formation of strong, vital bone. As an alternative, cerabone® or the synthetic maxresorb® granules may also be applied individually, particularly if an extended healing time of at least 5–6 months is anticipated.

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