Facial necrotising fasciitis following rhytidectomy

Rhytidectomy is the most common surgical procedure used to rejuvenate the appearance of the aging face and neck. Necrotising fasciitis is a rapidly progressing, life-threatening, bacterial infection of the skin, the subcutaneous tissue, and the fascia. We report a case of necrotising fasciitis of the face caused by a group A streptococcal infection after rhytidectomy on a healthy female patient. An abscess on her hand that had been caused by an infection related to a venous catheter had provided a potential entry for the pathogen, and treatment combined both surgical debridement and antibiotics. The operation had resulted in large tissue losses around the ears, which we treated by healing by second intention.     

上颌前磨牙颈部宽、厚、曲度的测量分析

目的：手工测量并获取自然上颌前磨牙颈部数据，为上颌前磨牙区种植美学基台研究设计提供基础数据，并为种植修复临床提供参考。方法：采用高精度游标卡尺测量608个离体上颌前磨牙（其中上颌第一前磨牙296个，上颌第二前磨牙312个）颈部宽度和厚度，牙颈曲度，釉牙骨质界（CEJ）下1．5mm颈宽、颈厚；运用SPSS 13．0软件对所测数据作统计学处理。结果：测量并分析得出各指标的均值、标准差、上下四分位间距值。结论：所测数据是对西安地区人前磨牙颈部数据的进一步补充完善，为西安地区上颌前磨牙区牙颈部修复美学、种植体牙龈美学成型基台的设计研发提供数据支持。     

Onlay植骨技术在上颌前牙美学区种植修复中的应用

目的:评估Onlay植骨技术在上颌前牙美学区种植修复中的应用。方法:随机选取82例行种植修复术的患者,根据术前评估,给予患者合理的Onlay植骨技术及牙种植修复手术方案。观察患者植骨期间牙槽嵴骨量变化及美学指标变化情况,记录牙种植体存活率。结果:Onlay植骨术后3个月末牙槽嵴水平向骨量(7.84±0.42)mm、牙槽嵴垂直向骨量(11.65±0.85)mm和术后6个月末牙槽嵴水平向骨量(7.15±0.60)mm、牙槽嵴垂直向骨量(10.86±0.63)mm均显著高于植骨前骨量,P=0.035、0.039、0.035、0.040;牙种植修复术后3个月末PES(7.48±1.36)分、WES(7.56±1.09)分和术后6个月末PES(7.78±1.42)分、WES(7.82±1.51)分均显著高于术前评分水平,P=0.040、0.043、0.038、0.032;Onlay植骨术后,骨组织美观丰满,伤口愈合良好,未出现植骨坏死,种植体存活率高。结论:将Onlay植骨技术应用于上颌前牙美学区种植修复中,可显著改善种植区骨量不足的问题,骨愈合情况良好,种植体存活率高,值得推广使用。