Abstract
This in vitro study evaluated the impact of initial erosion on the susceptibility of enamel to further erosive challenge. Thirty bovine enamel blocks were selected by surface hardness and randomized into two groups (n = 15): GC- group composed by enamel blocks without erosion lesion and GT- group composed by enamel blocks with initial erosion lesion. The baseline profile of each block was determined using the profilometer. The initial erosion was produced by immersing the blocks into HCl 0.01 M, pH 2.3 for 30 seconds, under stirring. The erosive cycling consisted of blocks immersion in hydrochloric acid (0.01 M, pH 2.3) for 2 minutes, followed by immersion in artificial saliva for 120 minutes. This procedure was repeated 4 times a day for 5 days, and the blocks were kept in artificial saliva overnight. After erosive cycling, final profile measurement was performed. Profilometry measured the enamel loss by the superposition of initial and final profiles. Data were analyzed by t-test (p<0.05). The result showed no statistically significant difference between groups (GS = 14.60±2.86 and GE = .14.69±2.21 μm). The presence of initial erosion on bovine dental enamel does not enhance its susceptibility to new erosive challenges.
Highlights
Dental erosion is defined as the tooth surface loss caused by acids of non-bacterial origin[1,2,3] The pathophysiology of dental erosion, is more complex than previously described [4]
The results showed that after erosive cycling, both the noneroded enamel and the enamel with initial erosion lesion exhibited similar levels of erosive wear (p>0.05) (Table 1)
Studies use noneroded or eroded/demineralized enamel as if they present different behaviors, the findings of the present study demonstrated that there were no statistically significant differences in enamel loss between noneorded enamel and enamel with initial erosion lesion for bovine teeth
Summary
Dental erosion is defined as the tooth surface loss caused by acids of non-bacterial origin[1,2,3] The pathophysiology of dental erosion, is more complex than previously described [4]. Erosion is currently considered a near surface demineralization, comprising two developmental stages. The initial erosive stage, termed dental erosion, corresponds to enamel softening, which results in losses of mechanical resistance and structural integrity [5, 6]. The following process, so-called erosive tooth wear, occurs by either prolonged demineralization of tooth surface or the action of mechanical forces onto the softened area, leading to irreversible dental enamel loss[5,6,7]. Because the prevalence of erosion is high[8,9,10], studies have been conducted to search preventive methods and early treatments for erosive tooth loss[11,12,13]. Many of them were conducted in vitro and despite their limitations, these studies have been used as an important tool
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
