目的探讨新疆地区维吾尔族与汉族患者上颌窦相关线性距离的差异性。方法选取2014年6月-2015年6月新疆医科大学第一附属医院维吾尔族及汉族CBCT影像,测量上颌窦垂直向及近远中向线性距离并进行比较。结果汉族患者上颌窦近远中径的平均距离右侧为(29.1±5.31)mm,左侧为(29.0±4.92)mm;维吾尔族患者右侧为(30.6±4.98)mm,左侧为(30.7±4.74)mm,差异有统计学意义(P<0.05)。女性患者上颌窦近远中径中,汉族患者右侧为(28.9±4.14)mm,左侧为(29.1±4.59)mm;维吾尔族患者右侧为(31.0±4.78)mm,左侧为(31.1±4.70)mm,差异有统计学意义(P<0.05)。汉族患者上颌窦颊腭径的平均距离右侧为(22.5±4.58)mm,左侧为(23.0±4.63)mm;维吾尔族患者右侧为(22.59±4.46)mm,左侧为(23.4±4.55)mm,差异无统计学意义(P>0.05)。汉族患者窦底至牙槽嵴顶的平均高度(residual bone high,RBH)右侧为(9.2±3.86)mm,左侧为(9.2±3.73)mm;维吾尔族患者右侧RBH的平均高度为(9.5±3.53)mm,左侧为(9.1±3.29)mm。汉族缺牙患者右侧RBH为(7.9±4.08)mm,左侧为(6.9±3.41)mm;维吾尔族患者右侧RBH为(7.8±4.46)mm,左侧为(7.7±3.76)mm,差异均无统计学意义(P>0.05)。结论维吾尔族患者上颌窦解剖结构中除上颌窦内壁近远中径大于汉族外,其余结构均基本一致。
口腔种植作为牙列缺损的重要修复方法之一,目前在临床上得到广泛应用,种植材料的优化对于种植成功具有重要意义。聚醚醚酮(polyetheretherketone, PEEK)是聚芳醚酮家族中的一种半结晶形态热塑性聚合物,相比于传统的口腔种植材料,PEEK具有与骨组织相近的弹性模量、化学稳定性和射线可透性等一系列优异的性能,能够避免金属腐蚀以及应力遮挡效应导致的骨吸收。然而,PEEK表面的生物惰性可能会导致骨结合不良以及感染等问题,不利于其在口腔种植领域的应用。因此,PEEK的表面改性日益成为研究的热点之一。研究人员探索了多种生物活性材料的改性方法,以有效增强PEEK及其复合材料的成骨和抗菌性。因此,本文主要综述了近年来生物活性材料改性后的PEEK的研究进展,对PEEK的成骨及抗菌策略进行了分析,并对改性后的PEEK在口腔种植领域的应用进行了展望。As one of the important repair methods for dentition defects, oral implant is widely used in clinic. The optimization of implant materials is of great significance to the success of implants. Polyetheretherketone (PEEK) is a semi-crystalline thermoplastic polymer in the polyaryletherketone family. Compared with traditional oral implant materials, PEEK has a series of excellent properties such as elastic modulus, chemical stability and ray permeability similar to bone tissue, which can avoid metal corrosion and bone resorption caused by stress shielding effect. However, the biological inertia of PEEK surface may lead to problems such as poor osseointegration and infection, which is not conducive to its application in the field of oral implantology. Therefore, the surface modification of PEEK has increasingly become one of the research hotspots. Researchers have explored a variety of modification methods of bioactive materials to effectively enhance the osteogenic and antibacterial properties of PEEK and its composites. Therefore, this paper
