Three dimensional deformation of dry-stored complete denture base at room temperature
Identifieur interne : 000442 ( Main/Exploration ); précédent : 000441; suivant : 000443Three dimensional deformation of dry-stored complete denture base at room temperature
Auteurs : Seo-Ryeon Lim [Corée du Sud] ; Joon-Seok Lee [Corée du Sud]Source :
- The Journal of Advanced Prosthodontics [ 2005-7806 ] ; 2016.
Abstract
The aim of this study was to evaluate whether there is any typical deformation pattern existing in complete denture when it was dried by using the 3D scanner and surface matching program.
A total of 28 denture bases were fabricated with heat curing acrylic resin (each 14 upper and lower denture bases), and 14 denture bases (each 7 upper and lower denture bases) were stored in the water bottle (water stored), and another 14 denture bases were stored in the air (dry stored). Each specimen was scanned at 1st day after deflasking, 14th day after deflasking, and 28th day after deflasking, and digitalized. Three dimensional deformation patterns were acquired by comparison of the data within storage group using surface matching program. For evaluating differences between groups, these data were compared statisticallyusing Kruskal Wallis and Mann Whitney-U test (α=.05).
When evaluating 3D deformation of denture base, obvious deformations were not found in maxillary and mandibular water storage group. However, in dry stored group, typical deformation pattern was detected as storage time passes. It occurred mostly in first two weeks. Major deformations were found in the bilateral posterior area in both maxillary and mandibular group. In maxillary dry stored group, a statistical significance was found.
It was proved that in both upper and lower denture bases, dry storage caused more dimensional deformation than water storage with typical pattern.
Url:
DOI: 10.4047/jap.2016.8.4.296
PubMed: 27555899
PubMed Central: 4993843
Affiliations:
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Each specimen was scanned at 1<sup>st</sup> day after deflasking, 14<sup>th</sup> day after deflasking, and 28<sup>th</sup> day after deflasking, and digitalized. Three dimensional deformation patterns were acquired by comparison of the data within storage group using surface matching program. For evaluating differences between groups, these data were compared statisticallyusing Kruskal Wallis and Mann Whitney-U test (α=.05).</p></sec><sec><title>RESULTS</title><p>When evaluating 3D deformation of denture base, obvious deformations were not found in maxillary and mandibular water storage group. However, in dry stored group, typical deformation pattern was detected as storage time passes. It occurred mostly in first two weeks. Major deformations were found in the bilateral posterior area in both maxillary and mandibular group. In maxillary dry stored group, a statistical significance was found.</p></sec><sec><title>CONCLUSION</title><p>It was proved that in both upper and lower denture bases, dry storage caused more dimensional deformation than water storage with typical pattern.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Winkler, S" uniqKey="Winkler S">S Winkler</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Peyton, Fa" uniqKey="Peyton F">FA Peyton</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Skinner, Ew" uniqKey="Skinner E">EW Skinner</name></author><author><name sortKey="Cooper, En" uniqKey="Cooper E">EN Cooper</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Taylor, Pb" uniqKey="Taylor P">PB Taylor</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="De Gee, Aj" uniqKey="De Gee A">AJ de 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