Clinical evaluation of agar alginate combined impression preparation of fixed partial denture impressions / 中国基层医药

ABSTRACT

Objective To explore the clinical effect of agar alginate combined impression preparation of a fLxed partial denture impressions.Methods 88 cases of patients with fixed partial dentures were divided into experimental group(group A) and control group(group B).Group A of 45 patients with 93 abutments,the legal system to take an impression of agar and alginate combined impression; group B of 43 patients with 80 base,the use of alginate impression preparation of an impression.Were observed with a magnifying glass impression of the type and number of records the number of abutments,impression defects.Results 63(67.8％) of group A were ideal,30(32.2％) had defects,33(41.2％) of group B were ideal,47(58.8％) had defects,there were significant differences(x2 =19.36,19.28,all P ＜ 0.05).At the cervical margin of bubbles,the gingival sulcus and shoulder were not clear,there was significant difference(x2 =10.46,11.25,all P ＜ 0.05).There were no significant difference in tear or defect of the neck at the edge of the two impression.Conclusion Agar and alginate impression of the legal systemcan take an impression of reduced defects,which is worthy of clinical application