implants - internationalmagazine of oral implantology

I clinical study _ flapless implant surgery Fig. 1_Tissue punch to expose the alveolar crest. Fig. 2_Start of the drill sequence with the rose drill. _Abstract Backgroundandaim Minimally invasive implant insertion may offer thereductionofperi-implantinflammation,pocket depth and crestal bone loss, as well as minimisation ofpost-surgicalcomplications.Thegoalofthepres- ent study was to clinically investigate the soft-tis- sueresponseandtocomparetheoutcomeobtained with flapless, placed implants of three different manufacturers. Materialsandmethods Inthisclinicalstudy,346implantsinsertedin115 patients between January 2001 and February 2009 were examined. A total of 337 two-piece titanium (235 Straumann and 102 Thommen) and nine one- piecezirconium-dioxideimplants(Z-Systems)were used. The patient sample included seven smokers, two patients with diabetes mellitus, seven patients withbleedingdisordersandonepatientundergoing intravenous bisphosphonate therapy. Regular clin- ical examination of stability and peri-implant soft- tissue status was performed one, two, three, four and 16 weeks after implant insertion. All implants were loaded for at least 12 months with either fixed or removable prosthetic restora- tions. Attachment level, bleeding on probing (BOP), secretion,plaqueandkeratinisedgingivaweredoc- umented. Results After loading, one of the 347 implants was lost. The survival rate of the Straumann implants (n=235)was99.6%,thatoftheThommenimplants (n = 102) was 100% and that of the Z-Systems im- plants (n = 9) was 100%. Thus, the general survival rate was 99.9% after a mean follow-up period of three years and eight months. Flapless implant surgery and its effect on peri-implant soft tissue A prospective longitudinal clinical study Authors_Dr Kai Höckl, Prof Peter Stoll, Dr Georg Bach, Prof Wolfgang Bähr & Verena Stoll, Germany 06 I implants4_2011 Fig. 1 Fig. 2