Authors :
Dr. Neelam Nagle; Dr. Mukesh Sony; Dr. Deshraj Jain; Dr. Alka Gupta
Volume/Issue :
Volume 8 - 2023, Issue 2 - February
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://bit.ly/405Gh4p
DOI :
https://doi.org/10.5281/zenodo.7924289
Abstract :
Impression making is one of the most
common procedures that are performed by dentists in
day-to-day practice. These impressions can act as
vehicles of transmission and carry various types of
microorganisms, and with the advent of pandemic like
COVID 19 and its striking variants in future, an attempt
was made to compare and evaluate the dimensional
accuracy of recently introduced autoclavable polyvinyl
siloxane impression material upon chemical disinfection
and steam autoclaving.
Materials and methods: A comparative in- vitro study
was conducted in which three groups were made for
testing dimensional accuracy. The sample size for the
study was kept 45 (15 samples in each group), test
samples were made by making impression using two-step
double-mix technique on the prepared three-unit bridge
on the typhodont model. Statistical analysis was done
using one way analysis of variance (ANOVA),
independent t-test, the Shapiro–Wilk test was used to
investigate the distribution of the data and Levene’s test
to explore the homogeneity of the variables.
Results: The mean linear distance between the two
margins was as follows: Bucally: 1.7064 (Group I),
1.6850 (Group II) and 1.7039 (Group III), with mrv of
1.71 (master cast). Mesio-distally: 0.6224 (Group I),
0.6197 (Group II) and 0.6182 (Group III), mrv of
0.621(master cast). Lingually: 1.4661 (Group I), 1.4677
(Group II) and 1.4582 (Group III), with mrv of 1.470
(master cast). The difference between the calculated
value and master model value was statistically significant
in each group. Conclusion Within the limitations of this
study, the use of this impression material may have
future scope in the area of eliminating the cross infection
in dental clinics and to have improved in the accuracy of
the prosthesis. To improve the scope further in-vivo and
in-vitro studies are required to evaluate the physical
properties of this material as adequate so that it can be
widely accepted in clinical practice.
Keywords :
autoclavable polyvinyl siloxane impression material, dimensional accuracy, sterilization, disinfection, impression making.
Impression making is one of the most
common procedures that are performed by dentists in
day-to-day practice. These impressions can act as
vehicles of transmission and carry various types of
microorganisms, and with the advent of pandemic like
COVID 19 and its striking variants in future, an attempt
was made to compare and evaluate the dimensional
accuracy of recently introduced autoclavable polyvinyl
siloxane impression material upon chemical disinfection
and steam autoclaving.
Materials and methods: A comparative in- vitro study
was conducted in which three groups were made for
testing dimensional accuracy. The sample size for the
study was kept 45 (15 samples in each group), test
samples were made by making impression using two-step
double-mix technique on the prepared three-unit bridge
on the typhodont model. Statistical analysis was done
using one way analysis of variance (ANOVA),
independent t-test, the Shapiro–Wilk test was used to
investigate the distribution of the data and Levene’s test
to explore the homogeneity of the variables.
Results: The mean linear distance between the two
margins was as follows: Bucally: 1.7064 (Group I),
1.6850 (Group II) and 1.7039 (Group III), with mrv of
1.71 (master cast). Mesio-distally: 0.6224 (Group I),
0.6197 (Group II) and 0.6182 (Group III), mrv of
0.621(master cast). Lingually: 1.4661 (Group I), 1.4677
(Group II) and 1.4582 (Group III), with mrv of 1.470
(master cast). The difference between the calculated
value and master model value was statistically significant
in each group. Conclusion Within the limitations of this
study, the use of this impression material may have
future scope in the area of eliminating the cross infection
in dental clinics and to have improved in the accuracy of
the prosthesis. To improve the scope further in-vivo and
in-vitro studies are required to evaluate the physical
properties of this material as adequate so that it can be
widely accepted in clinical practice.
Keywords :
autoclavable polyvinyl siloxane impression material, dimensional accuracy, sterilization, disinfection, impression making.
