Effect of the CAD/CAM zirconia all-ceramic crown restoration on periodontal tissue

    loading  Checking for direct PDF access through Ovid

Abstract

BACKGROUND:

To maintain the long-term effect of full crown largely depends on the health of periodontal tissues.

OBJECTIVE:

To explore the effect of CAD/CAM zirconia all-ceramic crown restoration on the state of periodontal health.

METHODS:

Sixty-four abutments of 55 patients were randomly divided into two groups: the experimental group included 32 abutments of 29 patients which would be restored by CAD/CAM zirconia all-ceramic crowns; the controlled group included 32 abutments of 26 patients which would be restored by Ni-Cr alloy porcelain-fused-to-metal restorations. The volume of gingival crevicular fluid and the levels of interleukin-6 and tumor necrosis factor-α in the two groups were examined at the pre-restoration and post-restoration stages. Meanwhile, periodontal clinical indicators, including sulcus bleeding index, probing depth, plaque index and attachment loss were recorded.

RESULTS AND CONCLUSION:

No difference in various indexes was found in the experimental group before and after restoration (P > 0.05). At 12 months after restoration, in the control group, the volume of gingival crevicular fluid, the levels of interleukin-6 and tumor necrosis factor-α, sulcus bleeding index, probing depth, and plaque index were all increased (P > 0.05); meanwhile, these indexes in the experimental group were significantly lower than those in the control group (P < 0.05). Experimental findings suggest that the CAD/CAM zirconia all-ceramic crown restoration is more favorable to the health of periodontal tissues.

Subject headings:

metal ceramic alloys; tumor necrosis factor-alpha; interleukin-6

Funding:

a grant from the Science and Technology Bureau of Hohhot, No. 2009-nong-she-6 S

Related Topics

    loading  Loading Related Articles