Efficacy of using a dual layer of membrane (dPTFE placed over collagen) for ridge preservation in fresh extraction sites: a micro-computed tomographic study in dogs
Efficacy of using a dual layer of membrane (dPTFE placed over collagen) for ridge preservation in fresh extraction sites: a micro-computed tomographic study in dogs
复制标题
DOI：
10.1111/j.1600-0501.2012.02526.x
复制
发表时间：
2013-10-01
影响因子：
4.3
通讯作者：
Wang, Hom-Lay
中科院分区：
文献类型：
--
作者：
Al-Hezaimi, Khalid;Rudek, Ivan;Wang, Hom-Lay
目的评估是否过度建设颊板或使用双层插座移植技术防止牙槽骨吸收，并提高最终的脊宽度，高度和体积后，牙齿loss.Material和方法在8只比格犬双边第二（P2），第三（P3），和第四（P4）前磨牙进行牙髓治疗。所有双侧下颌第一前磨牙和P2、P3、P4远中根半切，无创拔除。将动物随机分为四组：（i）单独的对照-牙槽，（ii）牙槽中的颗粒同种异体移植物，牙槽覆盖有高密度聚四氟乙烯（dPTFE）膜并缝合在牙槽上，（iii）牙槽中的颗粒同种异体移植物并过度构建颊板，牙槽覆盖有dPTFE膜并缝合在牙槽上，（iv）在牙槽骨中的颗粒同种异体移植物，并覆盖有双层（dPTFE置于胶原膜上），并缝合在牙槽骨上。16周后处死动物。结果第1、2、3、4组的骨体积（BV）分别为169.5、207.57、242.4、306.1mm（3）。第1、2、3和4组的VBH分别为4.2、6.4、6.2和7.3mm。第1、2、3和4组的牙槽嵴宽度分别为5.45 +/- 0.75、5.91 +/- 0.86、6.05 +/- 0.63和6.28 +/-1.01 mm。有没有显着差异，在BMD groups.Conclusions RP使用双层膜拔牙后的结果，在更多的BV，VBH，和牙槽嵴宽度相比，当使用单层膜。
Objective To assess if overbuilding the buccal plate or using a dual-layer socket grafting technique prevents alveolar bone resorption and enhances final ridge width, height, and volume after tooth loss in an animal model.Material and methods In eight beagle dogs bilateral second (P2)-, third (P3)-, and fourth (P4) premolars were endodontically treated. All bilateral mandibular first premolars and distal roots of P2, P3, and P4 were hemisectioned and atraumatically extracted. Animals were randomly divided into four groups: (i) Control-Socket alone, (ii) Particulate allograft in the alveolum, socket covered with high-density polytetrafluoroethylene (dPTFE) membrane and sutured over the alveolum, (iii) Particulate allograft in the alveolum and overbuilding the buccal plate, socket covered with dPTFE membrane and sutured over the alveolum, (iv) Particulate allograft in the alveolum and covered with dual layer (dPTFE placed over collagen membrane), and sutured over the alveolum. After 16weeks, the animals were sacrificed. Mandibular blocks of the jaws were assessed for bone volume (BV), vertical bone height (VBH), alveolar ridge thickness, and bone mineral density (BMD) using micro-computed tomography.Results The BV in groups 1, 2, 3, and 4 was 169.5, 207.57, 242.4, and 306.1mm(3), respectively. The VBH in groups 1, 2, 3, and 4 was 4.2, 6.4, 6.2, and 7.3mm, respectively. Ridge widths in groups 1, 2, 3, and 4 were 5.45 +/- 0.75, 5.91 +/- 0.86, 6.05 +/- 0.63, and 6.28 +/- 1.01mm, respectively. There was no significant difference in BMD between the groups.Conclusions The RP using a dual layer of membrane following tooth extraction results in more BV, VBH, and alveolar ridge width as compared to when a single layer of membrane is used.