The Effect of Acidity Level on Ions Released and Corrosion of Metal Orthodontic Appliances at Different Time Intervals : An in Vitro Study

2015 ◽  
Vol 27 (4) ◽  
pp. 168-174
Author(s):  
Mohammed R. Thamer ◽  
Sami K. Al-Joubori
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Appliances ◽  
Time Intervals ◽  
Acidity Level

pH of Medicated Syrups–Does It Really Matter? – An in-vitro Study: Part-II

2008 ◽  
Vol 33 (2) ◽  
pp. 137-142 ◽  
Author(s):  
KL Girish Babu ◽  
Kavita Rai ◽  
Amitha Hegde
Keyword(s):  
Atomic Absorption ◽  
In Vitro Study ◽  
Vitro Study ◽  
Atomic Absorption Spectrometer ◽  
Alkaline Ph ◽  
Time Intervals ◽  
Neutral Ph ◽  
Absorption Spectrometer ◽  
Dissolution Potential

The aim of the present in vitro study was to quantify the endogenous erosive potential of the various pediatric liquid medicaments by measuring the calcium dissolution of primary enamel after immersing it for different time intervals (1min, 10 min and 8 hours) using atomic absorption spectrometer (AAS). The eight commonly used pediatric liquid medicaments which were selected had definitive endogenous calcium dissolution potential. All the medicaments showed calcium dissolution of primary enamel at alkaline pH and near neutral pH. The calcium dissolution potential of pediatric liquid medicaments when compared with their respective pH showed no statistically significant correlation. In conclusion, there was evidence of calcium dissolution from all the pediatric liquid medicaments.

Effect of microbubbled water on the removal of a biofilm attached to orthodontic appliances – An in vitro study

2013 ◽  
Vol 72 (4) ◽  
pp. 1-2 ◽  
Author(s):  
Mio Mukumoto ◽  
Tomoko Ohshima ◽  
Miwa Ozaki ◽  
Hirokazu Konishi ◽  
Nobuko Maeda ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Appliances

scholarly journals Assessment of Exogenous Pigmentation on Clear Elastomeric Modules: An in vitro Study

2018 ◽  
Vol 8 (1) ◽  
pp. 33-36
Author(s):  
Shaista N Ansari ◽  
Dhananjay Rathod ◽  
G P Rathod ◽  
Gazal Bisht
Keyword(s):  
Methylene Blue ◽  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Appliances ◽  
Significant Difference ◽  
Adobe Photoshop ◽  
Group A ◽  
Strong Staining ◽  
Group B

Objective: To assess in vitro changes in the shade of clear elastomeric modules from different manufacturers influenced by exogeneous pigmentation contained in everyday dietary substances.Materials & Method: The specimen comprised of clear elastomeric modules (Group A: Libral, Group B: TP Orthodontics) which were immersed in dietary substances: ketchup, coffee, tea, pepsi & methylene blue. Their hue, saturation and intensity were figured after 72 hours by methods of Adobe photoshop CS3 to mirror the module recoloring seriousness.Result: Significant difference was found between two types of modules analyzed in this study. Ketchup and methylene blue demonstrated higher staining potential compared to other staining media. Besides, there was no significant difference in staining contrast between tea and Pepsi.Conclusion: Ketchup and methylene blue are strong staining media, ought to be avoided by the patients opting for aesthetic orthodontic appliances. Elastomeric modules manufactured by different companies have differing staining potential. 

scholarly journals Effect of microbubbled water on the removal of a biofilm attached to orthodontic appliances — An in vitro study —

2012 ◽  
Vol 31 (5) ◽  
pp. 821-827 ◽  
Author(s):  
Mio MUKUMOTO ◽  
Tomoko OHSHIMA ◽  
Miwa OZAKI ◽  
Hirokazu KONISHI ◽  
Nobuko MAEDA ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Appliances

scholarly journals A Comparative Evaluation of Six Commonly used Types of Die Materials for the Property of Abrasion Resistance, at Two Time Intervals: An in vitro Study

2013 ◽  
Vol 3 (1) ◽  
pp. 1-6
Author(s):  
Sattyam V Wankhade ◽  
Kaushal V Sanghavi ◽  
Vilas Rajguru ◽  
Jyoti Lokade
Keyword(s):  
Abrasion Resistance ◽  
Comparative Evaluation ◽  
In Vitro Study ◽  
Vitro Study ◽  
Time Intervals ◽  
Type Iv ◽  
Die Materials ◽  
Die Material ◽  
Type V

ABSTRACT Background and objectives This in vitro study evaluated and compared the abrasion resistance of types IV and V gypsums, resin-modified type IV and type V gypsums, synthetic gypsum, and epoxy resin die material at two different time intervals spanning a period of 24 hours. Materials and methods A total of 10 dies of each die material were fabricated and tested for abrasion resistance at each time interval. An average of five readings was taken for the test, measuring the rate of abrasion of the materials. Results All the tested properties of the epoxy resin material were far superior to those of the other materials (being tested). Resin-modified type IV gypsum had significantly better abrasion resistance than its type V counterpart at setting. However, when tested at 24 hours, both materials had comparable resistance to abrasion, which was the highest among the gypsum-based materials. Interpretation and conclusion Epoxy die resin had the most superior physical properties of all. A significant decrease in the rate of abrasion (-38 to -83%) was noted, when the gypsumbased products were tested at 24 hours. From the data obtained in this study, it is recommended that when gypsum-based materials are used, to wait at least 24 hours prior to separating casts from impressions (and subsequent laboratory procedures) to avoid damage to the casts and dies. Abbreviations RR IV: Resin modified type IV gypsum; RR V: Resin modified type V gypsum; S: Synthetic gypsum; V: Type V gypsum; IV: Type IV gypsum. How to cite this article Wankhade SV, Sanghavi KV, Rajguru V, Lokade J. A Comparative Evaluation of Six Commonly used Types of Die Materials for the Property of Abrasion Resistance, at Two Time Intervals: An in vitro Study. Int J Prosthodont Restor Dent 2013;3(1):1-6.

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