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Friday, 2 January 2015
The ideal implant Material.
http://en.wikipedia.org/wiki/Empty_nose_syndrome
The ideal implant material, other than real original turbinate tissue should be something with low extrusion and rejection rates, minimal infection risk, and—very importantly—that will provide a strong and durable enough structure that at the same time allows good permeability for blood vessel incorporation, which seems to be the key against long term absorption.
The ideal implant material, other than real original turbinate tissue should be something with low extrusion and rejection rates, minimal infection risk, and—very importantly—that will provide a strong and durable enough structure that at the same time allows good permeability for blood vessel incorporation, which seems to be the key against long term absorption.
Allografts.
http://en.wikipedia.org/wiki/Empty_nose_syndrome
Allografts: In the last two decades scientists have been able to harvest and remove away genetic markers of some basic human tissues (like skin dermis) from donors, and thus supplying a human natural implant material which does not stimulate the immune system to reject it. A good example for such material is a cellular dermis (brand named "Alloderm"). It does not get rejected and in most areas retains most of its volume over long periods.
Allografts: In the last two decades scientists have been able to harvest and remove away genetic markers of some basic human tissues (like skin dermis) from donors, and thus supplying a human natural implant material which does not stimulate the immune system to reject it. A good example for such material is a cellular dermis (brand named "Alloderm"). It does not get rejected and in most areas retains most of its volume over long periods.
Foreign Materials.
http://en.wikipedia.org/wiki/Empty_nose_syndrome
Foreign materials: such as fibrin glue, Teflon, Gore-Tex, and plastipore, which solve the problem of shortage of autografts, are easy to shape and do not tend to get absorbed. However they have a high extrusion rate, and sometimes cause infection. A case study of good retention of hydroxyapatite cement in one patient has been reported in 2000, but the follow-up was only 1 year long.
Foreign materials: such as fibrin glue, Teflon, Gore-Tex, and plastipore, which solve the problem of shortage of autografts, are easy to shape and do not tend to get absorbed. However they have a high extrusion rate, and sometimes cause infection. A case study of good retention of hydroxyapatite cement in one patient has been reported in 2000, but the follow-up was only 1 year long.
Autografts.
http://en.wikipedia.org/wiki/Empty_nose_syndrome
Generally speaking, the implant materials can be divided into 3 groups:
Autografts: bone, cartilage, fat, etc. from one site to another in the same patient. The problems here are relative shortage of tissue, and long term studies have shown high absorption rates in the nose. A Chinese study reported long-term success using iliac bone autografts.
Generally speaking, the implant materials can be divided into 3 groups:
Autografts: bone, cartilage, fat, etc. from one site to another in the same patient. The problems here are relative shortage of tissue, and long term studies have shown high absorption rates in the nose. A Chinese study reported long-term success using iliac bone autografts.
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