Page 70 - Craniomaxillofacial Implant Surgery - Jeroen P.J. Dings
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Chapter 4
RESULTS
This study comprised 103 implants, of which 15 failed to integrate, three remained buried and two were removed due to cosmetic reasons. The mean survival time of the 85 functional implants was 32 months (range 8–156 months). The most common method of retention for both nasal and orbital epitheses was bar splint and clip assemblies.
With respect to the time of implant placement in relation to the ablation, significantly (p = 0.044) more implants were lost for the AA-implants (10 out of 42), compared to the DA- implants (five out of 61) (Table 1, Fig. 1).
Figure 1 Survival in extra-oral implants placed during (DA-implants) or after ablative surgery (AA-implants). (Difference between the two groups was evaluated by log-rank test and resulted statistically significant (p = 0.044)).
In total 60 implants were placed in already irradiated bone, of which 11 (18.3%) were lost. Of the 43 implants, installed in non-irradiated bone, and irradiated after the ablative surgery four (9.3%) implants failed. This difference was not significant (p = 0.225, Fig. 2).
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