参考文献

[1]Linkevicius T,Apse P,Grybauskas S,et al.The influence of soft tissue thickness on crestal bone changes around implants:a 1-year prospective controlled clinical trial[J].Int J Oral Maxillofac Implants,2009,24(4):712-719.

[2]Sousa V,Mardas N,Farias B,et al.A systematic review of implant outcomes in treated periodontitis patients[J].Clin Oral Implants Res,2016,27(7):787-844.

[3]Hermann JS,Buser D,Schenk RK,et al.Biologic width around titanium implants.A physiologically formed and stable dimension over time[J].Clin Oral Implants Res,2000,11(1):1-11.

[4]Cochran DL,Nevins M.Biologic width:a physiologically and politically resilient structure[J].Int J Periodontics Restorative Dent,2012,32(4):371-373.(https://www.daowen.com)

[5]Hänggi MP,Hänggi DC,Schoolfield JD,et al.Crestal bone changes around titanium implants.Part I:A retrospective radiographic evaluation in humans comparing two non-submerged implant designs with different machined collar lengths[J].J Periodontol,2005,76(5):791-802.

[6]van Eekeren P,Tahmaseb A,Wismeijer D.Crestal bone changes in macrogeometrically similar implants with the implant-abutment connection at the crestal bone level or 2.5 mm above:a prospective randomized clinical trial[J].Clinical Oral Implants Res,2016,27(12):1479-1484.

[7]Wittneben JG,Millen C,Brägger U.Clinical performance of screw- versus cement-retained fixed implant-supported reconstructions-a systematic review[J].Int J Oral Maxillofac Implants,2014,29 Suppl:84-98.

[8]Hsu YT,Fu JH,Al-Hezaimi K,et al.Biomechanical implant treatment complications:a systematic review of clinical studies of implants with at least 1 year of functional loading[J].Int J Oral Maxillofac Implants,2012,27(4):894-904.