| Objective Toinvestigate the influence of differentrestorations on the health status of cervical margin and periodontal. Methods The clinical data ofpatients withperiodontal disease who received full crown restoration in the Department of Prosthodontics of Yunnan Second People's Hospital from January 2016 to August 2019 were retrospectively analyzed. A total of 172 patients (180 teeth) were divided into all ceramic crown group (84 cases, 90 teeth) and cobalt chromium alloy group (88 cases, 90 teeth).The all ceramic crown group was restored with zirconia all ceramic crown, while the cobalt chromium alloy group with cobalt chromium alloy porcelain crown. After restoration, the fitness and integrity of cervical margin, crown and color coordination of the two groups were evaluated. The levels of cartilage glycoprotein 39 (YKL-40), resistin, aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in GCF were measured 6 months after restoration. Results 96.67%(87/90) of the all ceramic crown group and 94.44%(85/90) of the co Cr alloy group had grade B tooth integrity after restoration, and there was no significant difference between the two groups (P>0.05).In the all ceramic crown group, 96.67%(87/90), 97.78%(88/90) and 94.44%(85/90) of the cervical marginal fitness, convexity and color harmony reached grade B, respectively, while in the co Cr alloy group, 90.00%(81/90), 88.89%(80/90) and 85.56%(77/90) respectively. Compared with the difference before and after repair,the GCF, YKL-40, resistin, AST and ALP levels in the co Cr alloy group were significantly higher than those in the all ceramic crown group (P<0.05).Conclusions Compared with cobalt chromium alloy, all ceramic crowns have better cervical marginal effect and less influence on periodontal tissue health, which is worthy of clinical application. |
