2Ericsson I,Person LG,Berglundh T,et al.Different types of inflammatory reactions in peri-implant soft tissues[J]. J Clin Periodontol,1995,22(3):255-261.
3Cochran DL,Hermann JS,Schenk RK,et al. Biologic width around titanium implants.A histometric analysis of the implantogingival junction around unloaded and loaded nonsubmerged implants in the canine mandible[J].J Periodontol,1997,68(2):186-198.
4Lazzara RJ,Porter SS.Plafform switching:a new concept in implant dentistry for controlling postrestorative crestal bone levels[J].Int J Periodontics Restorative Dent,2006,26 (1):9 17.
5Degidi M,Iezzi G,Scarano A,et al.Immediately loaded titanium implant with a tissue stabilizing/maintaining design (' beyond platform switch') retreved from man after 4 weeks:a histological and histomorphometrical evaluation.A case report[J].Clin Oral Implants Res,2008,19(3):276-282.
6D(o)ring K,Eisenmann E,Stiller M.Functional and esthetic considerations for single-tooth ankylos implant-crowns: 8 years of clinical performance[J].J Oral Implantol,2004,30(3):198-209.
7Weigl P.New prosthetic restorative features of the ankylos implant system[J].J Oral Implantol,2004,30(3):178-188.
8Baumgarten H,Cocchetto R,Testori T,et al.A new implant design for crestal bone preseration:initial obviations and case report[J].Pract Proced Aesthet Dent,2005,17(10):735-740.
9Gardner DM.Platform switching as a means to achieving implant esthetics[J].N Y State Dent J,2005,71(3):34-37.
10Meijer HJA,Steen WHA,Bosman F.A comparison of metlhods to assess marginal bone height around endosseous implants[J].J Clin Periodontol,1993,20(4):250-253.
