|What … for? (Indications)
Membranes help to reconstruct tissue voids, to support bone reconstruction techniques in the oral cavity.
Healing times have great variations, dependend on the size of the defect and the used technique. The effect may not be stable in the long run.
| Most membranes are semipermeable
– in different grades.
To make it simple in the picture:
The arrows show the ideal mechanism
to let the good things through
and keep the bad ones away.
|Contraindications||behavioral||Systemic bone diseases, poor oral hygiene, smoking, parafunction, no aftercare possible.|
|medical||Diabetes mellitus, infectious diseases, certain systemic/metabolism diseases, low ability for surgery.|
|pharmaceutical||Biphosphonates, chemotherapy, drugs, alcohol, corticosteroids, immune suppression.|
|Risks||during surgery||Tissue injury, swallowing/inhaling parts, injury or structures/nervs, ceasing of the surgery.|
|short term:||Inflammation, repulsion, foreign body reactions, allergic reactions
Rejection, wound opening with loss of the membrane.
|long term:||Most membranes are biodegradable and dissolve, some have to be removed. Foreign body reactions, nodularity,|
|Failures||Risks depend from several preconditions like bone volume, material and reasons in connection with the above contraindications.|
|Materials available||autologous||Cultured autologous fibroblasts|
|allogeneic (homologous)||Collagen fibrils (human)|
|Homologous collagen dispersion|
|Acellular dermal graft|
|xenogenous||Collagen fibrils (bovine)|
|Collagen fibrils (porcine)|
|alloplastic, synthetic||Poly-L-lactid acid|
|Expanded polytetrafluoroethylene (e-PFTE)|
|– Problems||n/a, single case reports|
|Medical societies||No specific society deals with oral soft tissue use|
|Most oral implantologic societies concern the use of soft tissue for augmentation surrounding dental implants – see there.|
|Selected patient informations||OUSIA: Barrier Membranes|
|Register (links)||n/a Materials are marked comprehensible and should be comprehensible documented in an implant-passport.|
|news||Market survey oral membranes 2016 (german)|
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