尾矿库不覆土直接种植火炬树技术

招远黄金生产居全国县级市之首 ,其尾矿流失防治任务十分艰巨。针对尾矿库复垦难的状况 ,招远市在尾矿库不覆土的条件下种植火炬树取得了成功 ,积累了一套系统的栽培技术和管理经验。采用该项技术既能发挥很好的保水保土作用 ,而且比传统的复垦方法节省 95

上颌骨重度吸收患者相干骨后种植和直接种植修复的一年随访研究

把涉及种植的43例上颌骨重度吸收患者分成3组：植骨并种植者（植骨组）、改良的种植但不植骨者（实验组）、改善的总义齿修复者（非种植组），各组分别有16人、20人、7人。在一年随访中，10％的种植体脱落。只有少数的失败（3／22）发生于义齿修复以后。植骨组织的累积成功率为83％，实验组是96％。很多患者的移植骨块发生骨吸收，尤其是上置式植骨患者。从修复完成到追踪的一年期间，平均每个种植体边缘有0.5mm的骨吸收。尽管治疗过程复杂，但是，各种植组除了一位患者以外，其他人都表示愿意再次接受治疗。大多数患者对治疗效果以及咀嚼力的提高非常满意。而那些未接受种植的患者能够适应他们的义齿，但对固位和咀嚼不甚满意。

输尿管末端粘连:原位新膀胱术后上尿路积水原因之一

目的：总结原位新膀胱术后输尿管末端粘连致上尿路积水的诊断和处理经验。方法：2000年1月～2007年4月共施行全膀胱切除加原位新膀胱术250例，发现8例原位新膀胱术后患者上尿路积水是由输尿管末端互相粘连或与新膀胱壁粘连引起，在内镜下经尿道切断粘连带予以处理。结果：术后中位随访8个月（1～22个月），7例肾功能和积水程度明显改善，1例稳定，并在密切随访观察中。1例在积水缓解后7个月再次复发，发现输尿管肠吻合口狭窄，行开放手术作输尿管新膀胱再植，随访5个月，积水程度明显改善。结论：输尿管末端粘连是使用输尿管直接种植法的原位新膀胱术后上尿路积水的原因之一。膀胱镜检查既可明确诊断又能同时作粘连带切断而达到治疗的目的，因此，对原位新膀胱术后上尿路积水患者应常规作膀胱镜检查。

GUIDED TISSUE REGENERATION AROUND DENTAL IMPLANTS IN IMMEDIATE EXTRACTION SOCKETS:COMPARISON OF RESORBABLE ANDNONRESORBABLE MEMBRANES

This study was per formed to compare the efficacy of guided tissue regeneration (GTR) around dentalimplants immediately placed into extraction sockets by resorbable of nonresorbable membranes. Mandibular. P2, P3, and P4 of four aduIt beagle dogs were extracted bilaterally, and buccal standard defects were cre-ated and measured. Eighteen commercially pure titanium Steri-Oss implant fixtures were placed into thefresh extraction sockets. Four implants were untreated controls, four implants received polytetrafluoro-ethylene (e-PTFE, Gore-Tex) membranes, five implants received collagen membranes (ParaGuide), andfive implants received polyglactin 910 mesh (Vicryl). After l4 weeks, clinical measurements were takenand the dogs were sacrificed and all specimens retrieved for histologic and histomorphometric evaluation.The average gain in bone height was 2. 1mm for untreated control sites, 3. 3mm for Gore-Tex sites,3. 8mm for collagen sites, and 1. 3mm for polyglactin 910 sites. The greatest gain in bone height and volume was seen for two sites that received Gore-Tex membranes and remained covered for the entire evalua-tion interval. The results of this study indicate that Gore-Tex and collagen membrane preduced gdri re-sults for GTR around Implants immediately placed into extraction sockets. Since collagen membrane doesnot cause obvious infection and does not need the surgical reentry for membrane removal, it can be a validalternative to Gore-Tex membrane to improve bone regeneration around dental implants, while polyglactin910 mesh seems not suitable to be used as GTR membrane in immediate implantation for its hIgh infectionrate.

原位新膀胱术后输尿管末端粘连的内镜治疗

目的探讨内镜治疗原位新膀胱术后输尿管末端粘连的临床应用。方法采用改良的全膀胱切除和原位新膀胱术治疗157例浸润性膀胱癌患者,男性144例,女性13例。术后发现11例患者因输尿管末端互相粘连或与新膀胱壁粘连而导致上尿路积水,遂行经尿道内镜下切断粘连带。结果内镜治疗术中术后均无明显并发症,随访9～36个月(中位14个月),10例肾功能和积水程度明显改善,1例稳定。1例在积水缓解后7个月再次复发,发现输尿管肠吻合口狭窄,行开放手术作输尿管新膀胱再植,随访18个月,积水改善。结论原位新膀胱术后输尿管末端粘连是上尿路积水的原因之一,常规膀胱镜检有利于诊断,经尿道内镜下切断粘连带是较为简单有效地治疗方法。