Effect of zirconia all-ceramic and cobalt-chromium alloy crown restoration on periodontal index and pathogenic bacteria of abutment
As an important means of oral restoration, metal porcelain crowns and bridges are accepted by most patients and doctors. However, the alloy is easily corroded in the wet mouth for a long time, causing ions to enter the mouth and deposit on the tooth body and gingival tissue, which will stimulate the periodontal tissue and cause inflammation of the gums. All-ceramic restorations have physical properties close to those of natural teeth and are ideal oral restoration materials.
The effect of zirconia all-ceramic on periodontal tissue is significantly lower than that of cobalt-chromium alloy. Compared with cobalt-chromium alloy crown restoration, zirconia full-ceramic crown restoration has less effect on patients' periodontal, causing subgingival plaque disease The detection rate of bacteria is lower. At the same time, because of its extremely high bending strength, the zirconia all-ceramic is simple, the manufacturing process is simple, the color is similar to that in the mouth, and the gums are in a very healthy state, which is worth clinical promotion.
Article Source: Mod Diagn Treat
Article number: 1001-8174（2017）04-0733-01