Result : Study of implants (2)|palmerah.implantgigi.com

Result : Study of implants (2)

author: David French, H Michelle Grandin, Ronen Ofec | publisher: drg. Andreas Tjandra, Sp. Perio, FISID

3.1 Risk indicators for bone loss (MBL)

All potential factors and related correlations were evaluated. Table 1 shows only variables that related significantly to changes in CBL over time in a multivariate model. Figures 1 through 3 illustrate the results of Table 1. The “start” refers to baseline at 3 months).

3.2 Patient‐related risk indicators

No significant effect on CBL was observed for diabetes (type 1 and type 2) nor history of periodontal disease.

3.2.1 Autoimmune disease

There was no difference in initial CBL at the start (Figure 1A) but an almost significant main effect was observed overall (P value= 0.04).

3.2.2 Smokers

At the start there was no difference with regard to CBL between heavy smokers and non‐smokers (Figure 1B) but a significant main effect was found to exist (P value<0.01) as well as a significant interaction with time. MBL among heavy smokers was more rapid after 4 years (Figure 1B).

3.2.3 Bisphosphonates

There were 34 patients with 84 implants in this group with no implant failures (Figure 1C), although there were three sites with infections and also three other sites which required prolonged healing >6 months from stage 2 to pass torque test of 35 Ncm. An almost significant main effect (P value= 0.045) with no difference at start existed among the bisphosphonate group.

3.3 Implant‐related risk indicators

The implant‐related factors all showed an effect as follows:

3.3.1 Implant location

A significant difference in mean CBL existed as a function of implant location (Figure 2A) already at the start (P value<0.01) with greater mean CBL for implants located anteriorly, compared with posterior mandible and posterior maxilla (see time = 0.25 in Figure 2A).

3.3.2 Implant diameter

There was a significant difference in CBL as a function of implant diameter (Figure 2B) at the start, as well as a significant main effect and interaction with time.

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