Objectives:
The aim of this study was to evaluate the clinical performance of posterior
composite restorations reinforced by bulk base of short-fiber composite (everX
Posterior, GC Corporation).

Methods:
36 short fiber-reinforced composite restorations were placed in premolar and
molar teeth of 33 patients. Eight of the teeth were vital and 28
non-vital.  Average follow up time of the restorations was 30.6
months (2.5 years), ranging from 16.2 to 51.3 months (1.3 - 4.3 years). Results: One restoration failed during
the follow-up period due to secondary caries, at time point 39.5 months. Three
fillings had minor fractures during the follow-up. Overall survival rate of the
restorations was 97.2 % and success rate (no maintenance needed) 88.9 %
respectively.

Conclusion:
Posterior composite restorations with bulk base of short-fiber composite showed
good clinical performance in the short term evaluation.