参考文献

[1]Kan JY,Roe P,Rungcharassaeng K,et al.Classification of sagittal root position in relation to the anterior maxillary osseous housing for immediate implant placement:a cone beam computed tomography study[J].The International Journal of Oral & Maxillofacial Implants,2011,Jul-Aug,26(4):873-876.

[2]Xu D,Wang Z,Sun L,et al.Classification of the Root Position of the Maxillary Central Incisors and its Clinical Significance in Immediate Implant Placement[J].Implant Dentistry,2016,Aug,25(4):520-524.(https://www.daowen.com)

[3]Shen P,Zhao J,Fan L,et al.Accuracy evaluation of computer-designed surgical guide template in oral implantology[J].Journal of cranio-maxillo-facial surgery,2015,Dec,43(10):2189-2194.

[4]Chen Z,Li J,Sinjab K,et al.Accuracy of flapless immediate implant placement in anterior maxilla using computer-assisted versus freehand surgery:A cadaver study[J].Clinical oral implants research,2018,Dec,29(12):1186-1194.