To evaluate the clinical effect of two different resin cements on the glass fiber-reinforced posts.

One hundred and thirty-six teeth were randomly divided into two groups, with sixty-eight in each. Group A used Multilink N self-etch system and group B used RelyX Unicem self-adhesive system to bond fiber posts. Follow-up examinations took place at 6, 12 and 24 months after the placement.

The success ratios of two groups were all 97% above and there was no significant difference between two groups (P＞0.05).

Multilink N self-etch system and RelyX Unicem self-adhesive system all have good effect on glass fiber-reinforced posts bonding.

To evaluate the clinical effect of CAD/CAM zirconia and IPS e.max Press in all-ceramic fixed partial dentures in anterior or premolar area.

Patients aged 20~60 years old with the lack of the anterior teeth or the first permanent molars and with 3 unit fixed bridge repair were selected. They were randomly divided into CAD/CAM zirconia and IPS e.max Press groups. 3, 6, 12 months after the restoration resoectively, clinical observation of occurrence of falling off, fracture, fracture porcelain, the edge of the restoration body and the gum performance were evaluated by the Reference to the American Public Health Association's revised criteria. All the data were analyzed statistically.

With the extension of time, the success rate of the two kinds of all ceramic materials was decreased. The survival rates of two groups were all 90% above and there was no significant difference between the two groups.

CAD/CAM zirconia and IPS e.max Press all-ceramic systems can achieve good results under the premise of strict control of clinical indications.