Evaluation of the effect of tacrolimus on periodontitis induced in rats.

Objective: This study was to investigate the effect of tacrolimus (FK506) on periodontitis induced in rats.

Design: Periodontal disease was induced in 30 Wistar rats which were then randomly divided into two groups: treatment with a daily injection of 0.9% saline (1mL/day) and treatment with a daily injection of FK506.

Comparative radiopacity of six current adhesive systems.

Background: The radiopacity of contemporary adhesive systems has been mentioned as the indication for replacement of restorations due to misinterpretation of radiographic images.

Aims: This study aimed to evaluate the radiopacity of contemporary bonding agents and to compare their radiodensities with those of enamel and dentin.

Methods And Materials: To measure the radiopacity, eight specimens were fabricated from Clearfil SE Bond (CF), Xeno V (XE), Adper SE Bond (ASE), Magic Bond (MB), Single Bond 2 (SB), Scotchbond Multipurpose (SM), and gutta-percha (positive control).