The effects of gingival biotype on the aesthetics of anterior teeth with all ceramic crown / 实用口腔医学杂志

56 teeth in 48 patients were divided into thick gingiva group (28 teeth)and thin gingiva group (28 teeth) and repaired with zirconia ceramic crown.Before 1 and 2 years after repair,gingival index,gingival margin recession and edge color satisfaction were evaluated.1 and 2 years after,repair gingival index was increase in thick group (P ＜ 0.05),but other indices were not (P ＞ 0.05);in thin gingiva group 2 years after repair the gingival margin recession index was increased(P ＜0.05),the other indices were not(P ＞ 0.05).