GBR技术.pptx

Guided bone tissue regeneration technology application situation 郑雪莉 What is GBR? GBR is based on the different tissue cell growth and migration velocity is not with, the use of fixed biofilm on the surface of bone defect area, the barrier used to prevent epithelial cells and fibroblasts long bone defect, and maintain the stability of a blood clot, maintain a defect in the department of space, make a bone into ability of the cells into the bone defect, and ultimately reconstruction of bone tissue, change alveolar bone height and fullness, good for operation of alveolar bone atrophy patients create conditions.  GBR biofilm classification According to the membrane materials can be absorbed and  degradation in the body,    GBR membrane can be divided into two categories，one is absorbable (biodegradable),the other is absorption (biological degradation)  Absorbable membrane absorption membrane can be roughly divided into natural collagen membrane and synthetic membrane. collagen membrane are absorpted by enzyme degradation ,and synthetic membrane are degradated by hydrolysis reaction.  Absorbable membrane can provide good tissue separation and spatial dimension,and the biggest advantage is that it not need surgery to remove 2 times. Eventually the material are degradated .But its price is higher, texture is soft, sculpting sex is bad, the space of the membrane tissue regeneration is unable to secure . When used alone,it can appear membrane complications such as collapse, shift, and its absorption rate is not controllable, Which do not coordinate with osteogenesis speed, so it hindered the promotion of its clinical application. Absorption membrane absorption membrane represent expended poly-tetrafuor-ethylene，e-PTFE,  titanium membrane, titanium wire mesh. E - PTFE membrane is used as a GBR technique Which a kind of biological membrane , non-biodegradable, it does not cause tissue inflammation and immune response. Studies have reported e- PTFE membrane can ensure the o