A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study
Introduction: The denture base acrylic resins require adjustments for various reasons. During this process there is an alteration in the surface characteristics of the denture base. Rough surfaces promote the bacterial adhesion and plaque accumulation; therefore it is important to know the chara...
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doaj-b73967115037499383c0d6242a081e8e2020-11-25T02:36:55ZengJCDR Research and Publications Private LimitedJournal of Clinical and Diagnostic Research2249-782X0973-709X2015-01-0191ZC30ZC3410.7860/JCDR/2015/11310.5474A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic StudySantoshi Kumari V.0M. Taruna1Chittaranjan B.2Sushendhar Reddy M.3Kranti Kiran Reddy E.4Ganesh Kulkarni5Senior Lecturer, Department of Prosthodontics, MNR Dental College and Hospital, Sangareddy, Telangana, India.Professor, Department of Prosthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India.Professor & Head, Department of Prosthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana,India.Senior Lecturer, Department of Prosthodontics, SVS Dental College and Hospital, Mahabubnagar, Telangana, India.Reader, Department of Oral Pathology & Microbiology, MNR Dental College and Hospital, Sangareddy, Telangana, India.Senior Lecturer, Department of Oral Pathology, Malla Reddy Dental College and Hospital, Jeedimetla, Suraram, Telangana, India.Introduction: The denture base acrylic resins require adjustments for various reasons. During this process there is an alteration in the surface characteristics of the denture base. Rough surfaces promote the bacterial adhesion and plaque accumulation; therefore it is important to know the character of the surface left by instrumentation on denture base materials. This study evaluated the surface characteristics of the machined surfaces of heat-cured acrylic denture base resin, GC supersoft and Permasoft softliners. Materials and Methods: Thirty 15×15×1.5mm acrylic resin specimens were fabricated with each of three acrylic resins: Lucitone 199 denture base resin (Group I), GC supersoft (Group II) and Permasoft (Group III) softliners. They were further divided into three sub Groups A, B and C, in which Sub Group A was control group that is smooth produced against the glass. Sub Group B was produced by machining with the tungsten carbide bur and Sub group C is machined with the stone bur. Each surface was evaluated by a Scanning electron microscope and data were analyzed by analysis of variance followed by Tukey’s HSD test. Results: Stone bur produced smoother surface (Ra 3.6681μm± 0.254) on Lucitone199 than the tungsten carbide bur (Ra 5.3881μm ± 0.3373). Carbide bur produced a smoother surface on the GC super soft (Ra 1.617097μm ± 0.191767) and Permasoft softliners (Ra 2.237419μm ± 0.354259). Whereas stone bur produced rougher surface on GC supersoft(Ra 2.6μm) and Permasoft (Ra 4.184839μm ± 0.409869) softliners. Conclusion: The present study shows each type of rotary instrument produces its own characteristic surface on each type of denture base materials and that care is needed when selecting the most appropriate instrument to adjust denture base materials. These results can have a significant clinical implication. While using Lucitone 199 stone bur can be used for chair side adjustments. Tungsten carbide bur can be used for GC supersoft and Permasoft softliners to achieve smoother surface.https://jcdr.net/articles/PDF/5474/11310_CE(RA1)_F(T)_PF1(PAK)_PFA(AK)_PF2(PAG)_u.pdfacrylic denture base resinmachiningsoft-linerssurface roughness |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Santoshi Kumari V. M. Taruna Chittaranjan B. Sushendhar Reddy M. Kranti Kiran Reddy E. Ganesh Kulkarni |
spellingShingle |
Santoshi Kumari V. M. Taruna Chittaranjan B. Sushendhar Reddy M. Kranti Kiran Reddy E. Ganesh Kulkarni A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study Journal of Clinical and Diagnostic Research acrylic denture base resin machining soft-liners surface roughness |
author_facet |
Santoshi Kumari V. M. Taruna Chittaranjan B. Sushendhar Reddy M. Kranti Kiran Reddy E. Ganesh Kulkarni |
author_sort |
Santoshi Kumari V. |
title |
A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study |
title_short |
A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study |
title_full |
A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study |
title_fullStr |
A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study |
title_full_unstemmed |
A Qualitative Analysis to Compare the Effects of Surface Machining of Conventional Denture Base Resin and Two Soft Liners: A Scanning Electron Microscopic Study |
title_sort |
qualitative analysis to compare the effects of surface machining of conventional denture base resin and two soft liners: a scanning electron microscopic study |
publisher |
JCDR Research and Publications Private Limited |
series |
Journal of Clinical and Diagnostic Research |
issn |
2249-782X 0973-709X |
publishDate |
2015-01-01 |
description |
Introduction: The denture base acrylic resins require adjustments
for various reasons. During this process there is an alteration in
the surface characteristics of the denture base. Rough surfaces
promote the bacterial adhesion and plaque accumulation;
therefore it is important to know the character of the surface
left by instrumentation on denture base materials. This study
evaluated the surface characteristics of the machined surfaces
of heat-cured acrylic denture base resin, GC supersoft and
Permasoft softliners.
Materials and Methods: Thirty 15×15×1.5mm acrylic resin specimens were fabricated with each of three acrylic resins: Lucitone
199 denture base resin (Group I), GC supersoft (Group II) and
Permasoft (Group III) softliners. They were further divided into
three sub Groups A, B and C, in which Sub Group A was control
group that is smooth produced against the glass. Sub Group B
was produced by machining with the tungsten carbide bur and
Sub group C is machined with the stone bur. Each surface was
evaluated by a Scanning electron microscope and data were
analyzed by analysis of variance followed by Tukey’s HSD test.
Results: Stone bur produced smoother surface (Ra
3.6681μm±
0.254) on Lucitone199 than the tungsten carbide bur (Ra 5.3881μm
± 0.3373). Carbide bur produced a smoother surface on the GC
super soft (Ra
1.617097μm ± 0.191767) and Permasoft softliners
(Ra
2.237419μm ± 0.354259). Whereas stone bur produced
rougher surface on GC supersoft(Ra
2.6μm) and Permasoft (Ra
4.184839μm ± 0.409869) softliners.
Conclusion: The present study shows each type of rotary
instrument produces its own characteristic surface on each
type of denture base materials and that care is needed when
selecting the most appropriate instrument to adjust denture base
materials. These results can have a significant clinical implication.
While using Lucitone 199 stone bur can be used for chair side
adjustments. Tungsten carbide bur can be used for GC supersoft
and Permasoft softliners to achieve smoother surface. |
topic |
acrylic denture base resin machining soft-liners surface roughness |
url |
https://jcdr.net/articles/PDF/5474/11310_CE(RA1)_F(T)_PF1(PAK)_PFA(AK)_PF2(PAG)_u.pdf |
work_keys_str_mv |
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