clinical - Nobel Biocare
clinical - Nobel Biocare
clinical - Nobel Biocare
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All-on-Four Immediate Function Treatment<br />
Two patients aged 70 and 68 years were<br />
lost to follow-up at the 1-year and less than<br />
3-month visit. These patients passed away<br />
due to natural causes. Two additional<br />
patients were lost to follow-up at the 3month<br />
follow-up visit. Therefore, a total of 16<br />
implants have been lost to follow-up. One<br />
hundred sixty-two patients in the study have<br />
completed the 6-month follow-up and have<br />
had their definitive prostheses (174) delivered.<br />
Three jaws were lost to follow-up prior<br />
to definitive prosthetic delivery, and 1 jaw<br />
was lost to follow-up after definitive prosthetic<br />
delivery. One hundred fifty-six patients<br />
have completed the 1-year follow-up.<br />
The overall implant survival rate was<br />
99.6% (1 year; Table 4) with no significant<br />
TABLE 3<br />
Implant size (<strong>Nobel</strong>Active TiUnite)*<br />
Implant Diameter Implant Length, mm Maxillae Mandibles<br />
3.5 8.5 — —<br />
10 — —<br />
11.5 12 —<br />
13 31 9<br />
15 28 (1) 42<br />
4.3 8.5 — —<br />
10 2 2<br />
11.5 16 7<br />
13 84 18<br />
15 94 92<br />
18 4 1<br />
5.0 8.5 — —<br />
10 — —<br />
11.5 5 1<br />
13 20 15<br />
15 131 (2) 81<br />
18 9 4<br />
436 (3) 272<br />
*( ) indicates failed implants/replaced.<br />
TABLE 4<br />
Cumulative survival analysis*<br />
Placed/Followed<br />
Implants<br />
difference between the maxillae and mandibles<br />
(99.3% vs 100%, P 5 .06, Fisher exact<br />
test). The 4.3-mm-diameter implants were<br />
most frequently used, with a survival rate of<br />
100% (99.2% for 3.5 mm and 99.2% for<br />
5.0 mm; Figure 1). No total arch failures have<br />
occurred to date, providing a definitive<br />
prosthesis survival rate of 100%. The life<br />
table analysis demonstrating the cumulative<br />
survival rate is reported in Table 4.<br />
Figures 2 through 8 demonstrate a case in<br />
postextraction sites of the mandible and<br />
maxilla with immediate implant placement,<br />
Figures 9 through 14 show a case in healed<br />
sites of a patient with a severely atrophic<br />
edentulous maxilla. The patient has been<br />
edentulous for 50 years. Figures 15 through<br />
Failed<br />
Implants<br />
Time Not<br />
Passed<br />
Lost to<br />
Follow-up CSR<br />
Implant insertion »» 3 months 708 1 0 4 99.9<br />
3 months »» 6 months 703 1 0 8 99.7<br />
6 months »» 12 months 694 1 29 0 99.6<br />
12 months »» 18 months 664 0 336 4 99.6<br />
18 months »» 24 months 324 0 240 0 99.6<br />
»» 24 months 84 0<br />
*CSR indicates cumulative survival rate.<br />
436 Vol. XXXVII/No. Four/2011
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