School of Dentistry, The University of Queensland, Australia.
Aust Dent J. 2011 Mar;56(1):76-81. doi: 10.1111/j.1834-7819.2010.01281.x. Epub 2010 Dec 22.
A separated instrument complicated orthograde endodontic retreatment of a maxillary molar tooth with apical periodontitis.
The tooth was treated utilizing microsurgical techniques that employed an operating microscope, ultrasonics, micro-instrumentation and mineral trioxide aggregate as a root-end filling material.
Healing was evident at a 12-month review appointment.
Microsurgical techniques have significantly improved the outcomes for healing of periapical lesions when compared to traditional approaches to endodontic surgery. Success rates have been shown to be comparable with conventional orthograde treatment.
上颌磨牙伴有根尖周炎的器械分离，行正位根管再治疗较为复杂。
采用手术显微镜、超声技术、微创器械和三氧化矿物凝聚体作为根管根尖倒充填材料，对患牙进行治疗。
12 个月复查时可见明显愈合。
与传统根管内手术方法相比，显微外科技术显著提高了根尖周病变愈合的效果。研究表明，其成功率与传统的正位治疗相当。
