CASE 2
A 32-year-old woman received two-step-type implant treatment on the
upper anterior teeth region. All two-step-type implants (Figure 5)
(IT-implant; Platon Japan) were inserted in parallel direction using
Guided Surgery (Straumann AG, Basel, Switzerland) followed by the
placement of cover screws on all implants. Four months after implant
placement, the implants demonstrated successful osseointegration (Figure
6). Impression was created using the impression abutment
(Platon
Japan). Intraorally, abutments (Platon Japan) were mounted on the
implants; all the abutments were luted to the zirconia frame using resin
cement (RelyX Ultimate; 3M ESPE, Seefeld, Germany). A pick-up impression
was performed using a VPS impression material (Imprint II; 3M ESPE,
Seefeld, Germany) after the resin cement was completely cured. Porcelain
was placed on a zirconia frame and baked. The superstructure was
attached to the abutment with a reverse-taper lock system without the
use of cement or screws. The implant body includes two stages so that if
the implant suffers from peri-implantitis, only the infected upper
implant body can be removed. At 4 years after the superstructure was
placed, no infection or bone resorption was observed (Figure 7,8).