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KMID : 0354619960080010135
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Journal Dankook Dental Research Institute
1996 Volume.8 No. 1 p.135 ~ p.149
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Prosthetic Evaluation of Impression Pretreated by Various Methods
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Abstract
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The antagoistic cast must accurately reproduce the occlusal morphologic features to simulate actual clinical occlusoarticular situation in the articulator. Various preimpression preparation procedures have been used for obtaining the accurate
quality of
occlusal reproduction in taking irreversible hydrcolloid impressions.
This study evaluated and determined how different procedures for preimpression preparation of the oral cavity influence the quality of the occlusal reproduction of teeth on the casts. In this study, bubble counts on the casts according to
preimpression
preparation or alginate types (normal set and fast set) were compared and analyzed.
@ES The results were as follows ;
@EN 1. The bubble count on casts was increased in Group I, Group III, Group IV and Group II, Group V in that order, and the quality of occlusal reproduction according to preimpression procedures showed Group I to be excellent. There was no
significant
difference between bubble counts according to alginate types.
2. There was significantly difference between bubble counts according to preimpression procedures in each of three bubble sizes(p<0.05). Group I in the case of Type I and Type II bubbles, Group I and Group III in the case of Type III bubbles
showed the
lowest bubble count with stastically significant difference(p<0.05)>
3. There was no significant difference between bubble counts according to alginate types in each of three bubble sizes(p>0.05).
According to the results of this study, it was considered that the quality of occlusal reproduction was most excellent when fluid hydrocolloid was finger -painted onto the occlusla surfaces in taking hydrocolloid impressions after the oral cavity
and
occlusal surfaces were dried by a vacuum suction and jet of air.
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