Dissertation
Dissertation > Medicine, health > Oral Sciences > Oral orthotics

The Influence on the Dimensional Stability and Elastic Deformation Caused by Two Types of Disinfectant Solution to Different Impression Material

Author ChenMengChun
Tutor ChenXiaoDong
School Dalian Medical University
Course Clinical Stomatology
Keywords Disinfection Impression Dimensional stability Elastic deformation
CLC R783
Type Master's thesis
Year 2011
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Objective: To compare with 2% glutaraldehyde , oxidizing water after soaking at different times , alginates , agar , silicone rubber, polyether rubber impression materials, dimensional stability and elastic deformation . Methods: four kinds of impression material from the system of the two mold impressions , the stamper were measured dimensional stability and elastic deformation of each material from the system each mold 3 groups of 6 , a total of 144 . Were divided into three groups, one for the clean water as a control group , and the remaining two groups were 2% glutaraldehyde , oxidizing water soak 15min, 30min, 45min, measured with a microscope before and after immersion impression material mark the line length of the The data were statistically analyzed. Results : 1. Using a 2 % glutaraldehyde , oxidizing water after soaking treatment , die size and elastic deformation (P lt; 0.05), and the deformation increases with time . (2) Different size and impression material elastic deformation between different changes (P lt; 0.05), the lowest rate of change of silicone impression . 3 alginate and agar impression soak 30min , the dimensional changes were significantly different (P lt; 0.05), polyether rubber, silicone rubber , and soak 45min , the dimensional changes were significantly different (P lt; 0.05). 4 Use oxidizing water immersion disinfection with 2% glutaraldehyde solution for disinfection effect on die size was no significant difference (P gt; 0.05). Conclusions : 1. Prolonged immersion disinfection on the impression material dimensions and elastic deformation exists impact on alginate impression the greatest impact on the silicone impression with minimal impact . 2 agar and alginate impression soak 15min, silicone rubber , polyether rubber impression for 30min dimensional stability of the die had no significant impact. 3 oxidizing water can be tested in clinical impression of disinfection.

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