A laboratory study of dimensional changes for three elastomeric impression materials using custom and stock trays

被引：33

作者：

Boulton, JL ^{[1
]}

Gage, JP ^{[1
]}

Vincent, PF ^{[1
]}

Basford, KE ^{[1
]}

机构：

[1] UNIV QUEENSLAND,SCH DENT,BRISBANE,QLD 4000,AUSTRALIA

来源：

AUSTRALIAN DENTAL JOURNAL | 1996年 / 41卷 / 06期

关键词：

impression materials; impression trays; dimensional accuracy;

D O I：

10.1111/j.1834-7819.1996.tb06026.x

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Clinical success of fixed prosthodontic procedures is dependent in part upon the dimensional accuracy of elastomeric impression materials and impression procedures. Three elastomeric impression materials were used in custom and stock trays to determine the accuracy of impressions taken from an experimental stainless steel model representing premolar and molar bridge abutment preparations. Horizontal and Vertical individual abutment and interabutment dimensions were measured on die stone replicas, and the measurements compared with those obtained from stainless steel master models. The results of this study demonstrate polysulphide is the least accurate impression material for both vertical and horizontal individual abutment dimensions. However, for interabutment horizontal dimensions, no statistical differences were noted between impression material types when using a custom tray. Stock trays produced unreliable results for all the materials tested.

引用

页码：398 / 404

页数：7

共 17 条

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ASH MM, 1984, WHEELERS DENT ANATOM, P197

[2]

BOMBERG TJ, 1980, J PROSTHET DENT, V60, P681

[3] ANALYSIS OF GOLD REMOVAL BY ACID ETCHING AND ELECTROCHEMICAL STRIPPING [J].