A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study
Introduction: The conventional impression procedure plays a major role in prosthodontics inspite of advancement in intraoral scanning devices and 3D imaging procedures. Dimensional accuracy and surface detail reproduction are important for recording an impression. Aim: The study evaluated and co...
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JCDR Research and Publications Private Limited
2021
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oai:doaj.org-article:2af870f1d2304bd99fc48dea3d46d4bc2021-11-14T06:22:02ZA Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study10.7860/JCDR/2021/49092.153592249-782X0973-709Xhttps://doaj.org/article/2af870f1d2304bd99fc48dea3d46d4bc2021-09-01T00:00:00Zhttps://www.jcdr.net/articles/PDF/15359/49092_CE[Ra1]_F[SH]_PF1(SC_KM)_PFA(SC_SL)_PN(KM).pdfhttps://doaj.org/toc/2249-782Xhttps://doaj.org/toc/0973-709XIntroduction: The conventional impression procedure plays a major role in prosthodontics inspite of advancement in intraoral scanning devices and 3D imaging procedures. Dimensional accuracy and surface detail reproduction are important for recording an impression. Aim: The study evaluated and compared the dimensional accuracy and surface detail reproduction of Polyvinyl Siloxane (PVS) and vinyl siloxane ether impression materials when used under dry and moist conditions. Materials and Methods: An in-vitro study was conducted in the Department of Prosthodontics, Rural Dental College, Pravara Institute of Medical Sciences, Loni, Ahmednagar, Maharashtra, India, for a period of two years from October 2018 to September 2020. A total of 60 impressions were made with PVS (Group A) and vinyl siloxane ether (Group B) under dry (A1, B1) and moist (A2, B2) conditions of stainless steel dies which had lines engraved on superior surface of the die. Using a Harloc’s Tool maker’s microscope, dimensional accuracy was measured by comparing the width of line Y in each impression. Surface detail reproduction was evaluated by American Dental Association (ADA) specification no. 19 where it stated continuous replication of at least any two lines out of the three lines inscribed on the die. Data analysis processing was performed in the SYSTAT version 12 (made by Crane’s software, Bangalore). Student’s unpaired t-test and Chi-square test were performed to determine statistical difference between PVS and vinyl siloxane ether where the level of significance was set at 5% and 1%. Results: The mean dimensional change and SD values for PVS under dry condition ranged from 21.93±2.46 to 22.40±2.89 (in mm). The mean dimensional change and SD values for PVS under moist condition ranged from 22.87±3.20 to 23.33±3.42. The mean dimensional change and SD values for vinyl siloxane ether under dry condition ranged from 21.93±3.61 to 24.73±5.20. The mean dimensional change and SD values for vinyl siloxane ether under moist condition ranged from 21.93±4.48 to 22.87±4.15. No statistical difference was found under dry and moist conditions within 2 hours and after 24 hours for both the materials. Conclusion: The study revealed no significant difference between dimensional accuracy and surface detail reproduction for PVS and vinyl siloxane ether. Both the materials can reproduce the details under dry and moist conditions satisfactorily and remained dimensionally stable till 24 hours after impression making.Amit Baban PokharkarUmesh Gopal PalekarVeena SarafDeepak Machindra VikheShefali Sevakram BhiwapurkarPallavi MadanshettyJCDR Research and Publications Private Limitedarticleaddition siliconeelastomershydrophilicimpressionmoisturesalivaMedicineRENJournal of Clinical and Diagnostic Research, Vol 15, Iss 9, Pp ZC06-ZC10 (2021) |
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DOAJ |
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EN |
| topic |
addition silicone elastomers hydrophilic impression moisture saliva Medicine R |
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addition silicone elastomers hydrophilic impression moisture saliva Medicine R Amit Baban Pokharkar Umesh Gopal Palekar Veena Saraf Deepak Machindra Vikhe Shefali Sevakram Bhiwapurkar Pallavi Madanshetty A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study |
| description |
Introduction: The conventional impression procedure plays a
major role in prosthodontics inspite of advancement in intraoral scanning devices and 3D imaging procedures. Dimensional
accuracy and surface detail reproduction are important for
recording an impression.
Aim: The study evaluated and compared the dimensional accuracy
and surface detail reproduction of Polyvinyl Siloxane (PVS) and
vinyl siloxane ether impression materials when used under dry and
moist conditions.
Materials and Methods: An in-vitro study was conducted in the
Department of Prosthodontics, Rural Dental College, Pravara
Institute of Medical Sciences, Loni, Ahmednagar, Maharashtra,
India, for a period of two years from October 2018 to September
2020. A total of 60 impressions were made with PVS (Group A) and
vinyl siloxane ether (Group B) under dry (A1, B1) and moist (A2,
B2) conditions of stainless steel dies which had lines engraved
on superior surface of the die. Using a Harloc’s Tool maker’s
microscope, dimensional accuracy was measured by comparing
the width of line Y in each impression. Surface detail reproduction
was evaluated by American Dental Association (ADA) specification
no. 19 where it stated continuous replication of at least any two
lines out of the three lines inscribed on the die.
Data analysis processing was performed in the SYSTAT version
12 (made by Crane’s software, Bangalore). Student’s unpaired
t-test and Chi-square test were performed to determine statistical
difference between PVS and vinyl siloxane ether where the level
of significance was set at 5% and 1%.
Results: The mean dimensional change and SD values for PVS
under dry condition ranged from 21.93±2.46 to 22.40±2.89 (in
mm). The mean dimensional change and SD values for PVS under
moist condition ranged from 22.87±3.20 to 23.33±3.42. The
mean dimensional change and SD values for vinyl siloxane ether
under dry condition ranged from 21.93±3.61 to 24.73±5.20. The
mean dimensional change and SD values for vinyl siloxane ether
under moist condition ranged from 21.93±4.48 to 22.87±4.15. No
statistical difference was found under dry and moist conditions
within 2 hours and after 24 hours for both the materials.
Conclusion: The study revealed no significant difference between
dimensional accuracy and surface detail reproduction for PVS
and vinyl siloxane ether. Both the materials can reproduce the
details under dry and moist conditions satisfactorily and remained
dimensionally stable till 24 hours after impression making. |
| format |
article |
| author |
Amit Baban Pokharkar Umesh Gopal Palekar Veena Saraf Deepak Machindra Vikhe Shefali Sevakram Bhiwapurkar Pallavi Madanshetty |
| author_facet |
Amit Baban Pokharkar Umesh Gopal Palekar Veena Saraf Deepak Machindra Vikhe Shefali Sevakram Bhiwapurkar Pallavi Madanshetty |
| author_sort |
Amit Baban Pokharkar |
| title |
A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study |
| title_short |
A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study |
| title_full |
A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study |
| title_fullStr |
A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study |
| title_full_unstemmed |
A Comparative Evaluation of Dimensional Accuracy and Surface Detail Reproduction for Polyvinyl Siloxane and Vinyl Siloxane Ether under Dry and Moist ConditionsAn In-vitro Study |
| title_sort |
comparative evaluation of dimensional accuracy and surface detail reproduction for polyvinyl siloxane and vinyl siloxane ether under dry and moist conditionsan in-vitro study |
| publisher |
JCDR Research and Publications Private Limited |
| publishDate |
2021 |
| url |
https://doaj.org/article/2af870f1d2304bd99fc48dea3d46d4bc |
| work_keys_str_mv |
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