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1 .马轩祥.口腔修复学.第5版.北京：人民卫生出版社，2004：480-496.Fundamentals of Fixed prosthodontics . 3rd ed .Ross IF，Thompson RH . A long term study of root resection in the treatment of maxillary molars with furcation involvement .6 .赵云风.现代固定修复学.北京：人民军医出版社，2007：210-218. ......