Research Information System
47th Annual Conference of the European Prosthodontic Associaton (EPA), Bialystok, Poland, 19 - 21 September 2024, pp.18
Objectives: Disinfectants can affect the dimensional
stability of impressions, which may decrease the precision of restoration and,
therefore, treatment quality. This study aims to compare the impact of
disinfectants on the dimensional stability of impression materials using
microcomputed tomography.
Materials and Methods: This study was funded by the
Scientific and Technological Research Council of Turkey(TUBITAK)(Grant
Number:1919B012338021). A full arch chrome-nickel master model was obtained by
scanning a modified typodont mandible. Full arch impressions were taken using a
two-step two-phase technique with condensation silicones. A total of 54 samples
were divided into nine groups(n=6) according to disinfectant material
type, disinfectant use, impression material brand. As impression materials
Zetaplus(Zhermack, Zhermack SpA, Italy), Addplus(Addcosil, efesdental, Turkey),
and oxasil Putty(Oxasil, Kulzer GmbH, Germany) putties, followed by oranwash
L, acwash, oxasil Light FlowOxasil light bodies were used. After removal of the
impression from the master model, impressions were immersed in disinfectants(%2
Glutaraldehyde, %5.25 NaOCl) for ten minutes. After 120 minutes from initial
polymerization, samples were digitalized with microcomputed tomography(SKYCAN
1725, Bruker). Distance between the cusp tips of canines was measured.
Kruskall-Wallis H and One-way ANOVA tests were used to compare data between
groups. (p = 0.05).
Results: Groups were compared to observe the effect of
disinfectants on dimensional stability. A maximum of 27,19 mm and a minimum
25,53mm distance were measured, with a total mean of 26,2915±0,31731mm. No
statistically significant difference was found within the groups (p>0.05).. There was a significant
difference between the group oxasil NaOCl group and Addcosil gluteraldehyde
group(p<0.05).
Conclusions: In this study, the effect of
disinfectants on dimensional stability was evaluated. Even if this
study was in-vitro, master model from scan of typodont was
used for the purpose of results being similar to clinical studies.
Disinfectants not significantly affecting dimensional stability will not lead
to a decrease in treatment quality. Further studies are needed with various
disinfectants.