Clinical evaluation of two types of fixed partial denture impressions.
- Author:
Lian-shui SHI
1
;
Li-kai WANG
;
Xiao-jun ZHANG
Author Information
- Publication Type:Journal Article
- MeSH: Alginates; Dental Impression Materials; Dental Impression Technique; Dental Models; Denture, Partial, Fixed; Gingiva; Glucuronic Acid; Hexuronic Acids; Humans
- From: West China Journal of Stomatology 2007;25(5):485-486
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the clinic effects of alginate impression and agar/alginate combined impression.
METHODS237 patients of fixed partial denture were collected and divided into group A and group B. Group A was taken impression by aglinate impression, including 81 patients (207 abutments). Group B was taken impression by agar/alginate combined impression, include 156 patients (392 abutments). The impressions were observed by megaloscope, and the number of abutment, the types and number of defect were recorded.
RESULTSIn the aglinate impressions, 57.0 percent of abutment had some defect. But in the agar/alginate combined impressions, 36.0 percent of abutment had some defect. There were significant difference between group A and group B in the abutment, air bubbles in cervical margin, unsharpness of the gingival sulcus and shoulders (P<0.05). There were no significant difference between group A and group B in the split and defect of the impressions on the cervical margin.
CONCLUSIONThere were less defects in the agar/alginate combined impression than in the alginate impression.
