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CC BY-NC-ND 4.0 · Eur J Dent 2017; 11(02): 242-249
DOI: 10.4103/ejd.ejd_268_16
Original Article
Dental Investigation Society

Evaluation of dimensional accuracy for different complete edentulous impressions immersed in different disinfectant solutions

Hussein Abdelfattah Ismail
1   Department of Removable Prosthodontics, Al-Farabi Collages, KSA
,
Hamada Z. Mahross
2   Department of Removable Prosthodontics, Alazhar Univeristy, Cairo
,
Suaad Shikho
1   Department of Removable Prosthodontics, Al-Farabi Collages, KSA
› Author Affiliations
Further Information

Publication History

Publication Date:
23 September 2019 (online)

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ABSTRACT

Objective: The aim of this study was to evaluate the effects of two different disinfectant solutions' immersion on the dimensional accuracy of different complete edentulous impressions. Materials and Methods: A specific custom-made metallic cast template was constructed and used for making both 120 alginate and zinc oxide eugenol (ZOE) paste impressions (60 for each). Disinfectants with 1% sodium hypochlorite and 2% glutaraldehyde were used for 10 and 60 min immersion of both impressions. After immersion time, the impressions were used for constructing 120 completely edentulous master stone models and divided into different groups according to the study. An electronic caliper was used for dimensional accuracy measurements of the casts. The data were collected and statistically analyzed according to the independent paired sample t-test at statistically significant level P< 0 05. One-way ANOVA test was used to compare between significant different groups. Results: There is no statistically significant difference in dimensional accuracy of alginate and ZOE paste impressions as disinfection with 1% sodium hypochlorite and 2% glutaraldehyde for 10 min and ZOE paste impressions for 60 min, where there is statistically significant difference in alginate impressions dimensional accuracy as disinfection with 1% sodium hypochlorite and 2% glutaraldehyde for 60 min. Conclusions: Possibility of ZOE impressions paste disinfected with 1% sodium hypochlorite and 2% glutaraldehyde for 10 or 60 min, not affecting on dimensional stability, while alginate impressions, only 10 min immersion in disinfectant not affecting the dimensional stability.

Key words:

Dimensional accuracy - disinfection - final impressions - glutaraldehyde - sodium hypochlorite
 

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