AI Article Synopsis
- The study investigates how varying pH levels in saliva influence the mechanical properties of latex elastics used in dental applications.
- Two groups of elastics were immersed in stable pH levels (7 and 5) while two groups experienced an intermittent drop to a low pH (4), with force measurements taken at multiple time points.
- While most comparisons showed no significant differences in force degradation, a notable exception occurred at the 36-hour mark between certain groups, indicating some influence of pH on the elastics' performance.
Article Abstract
Background: Latex elastics are still in common use due to their low cost and high flexibility to improve sagittal discrepancies or interdigitation of teeth. Mechanical properties of elastics are influenced by several environmental factors such as pH changes. This study evaluated similar latex elastics to define the influence of synergic effect of intermittent low pH and various baselines pH of saliva.
Materials And Methods: Four groups of latex elastics (3-M Unitek, 3/16 inch) were tested ( = 15 in each group). Two groups of elastics were immersed in two tanks of artificial saliva with different pH levels of 7 and 5, and two groups were immersed in two tanks of artificial saliva with intermittent drop of pH to 4. The force was measured when the elastics were stretched to 25 mm. These measurements were taken in 0, 4, 8, 12, 24, 36, and 48 h for each group. Repeated measures analysis of variance (RMANOVA) and Tukey's test were used to assess the findings. The level of significance was 0.05%.
Results: The interaction between pH and time analyzed with RMANOVA showed no significant differences ( > 0.05) except in 36 h ( = 0.014). The Tukey's analysis showed that each comparison between any two groups did not indicate significant differences ( > 0.05) except between Groups 1 and 3 and between Groups 2 and 3 ( < 0.05).
Conclusion: No significant correlation was seen between fluctuation of pH and force degradation in latex elastic band except in 36 h.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5356392 | PMC |
| http://dx.doi.org/10.4103/1735-3327.201129 | DOI Listing |
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