Abstract
Background/Aim: The chemical nature of soft drinks is acidic, so they possess the capacity to cause hard tissue erosion. The aim of this study is to assess the potentially erosive effect linked to pH and titratable acidity of some common soft drinks on dental hard tissues in prolonged time exposure. Material and Methods: Seven types of soft drinks in Romanian market were selected for this study. The pH and Titratable acidity were determined. Twenty one human dental hard tissue specimens were immersed in 5 ml solution each for 336h. Every 48h weight loss was determined for each specimen and after 336h volume changes were calculated. Enamel microhardness was determined using a Microhardness Tester model HV-1000 and compared to normal enamel microhardness. Results: The pH values of beverages ranged from 2.37 to 3.1, showing no significant differences. All specimens presented color and surface texture modifications, weight loss and volume reduction. There were found significant differences between the mean values of weight loss and enamel microhardness of each type of specimens and type of beverages tested. The most representative findings were achieved by indentations done in specific zones on Sprite® immersed specimen. This result suggest that microhardness near the eroded surface was significant lower than in other zones. Conclusions: Data obtained have shown that all the soft drinks tested had an erosive effect, causing dental hard tissue dissolution. For prolonged time exposure titratable acidity may be a major predictor for erosive potential. Dental erosion may affect different levels of enamel causing decreased enamel microhardness.
Highlights
Dental erosion is the chemical dissolution of dental hard tissues caused by the action of acids that are not produced by dental plaque[1,2]
The purpose of this study is to evaluate the erosive potential of some common soft drinks, assess the effects of soft drinks on dental hard tissue by assessing the weight loss, volume reduction, and enamel microhardness changes of human dental hard tissue specimens in in vitro experimental study
The data obtained from pH and Titratable acidity (Table 2) determinations have shown that the pH levels ranged in interval 2.37-3.10 with no significant
Summary
Dental erosion is the chemical dissolution of dental hard tissues caused by the action of acids that are not produced by dental plaque[1,2]. The chemical nature of soft drinks combined with a prolonged contact with dental hard tissues may destroy the hard tissues due to erosion[3,4]. High consumption of citric fruits and juices, can increase the risk of dental erosion[11,12]. Soft drinks consumption has increased over the last decades. In Romania average consumption of soft drinks in 2016. The consumption of soft drinks is especially high among children. According to World Health Organization Europe®, 30% of fifteen year old male teenagers in Romania consume at least once a day soft drinks. Most researchers have reported that juices, carbonated and non-carbonated drinks, from both Europe and the United States are potentially erosive[15,16,17,18]
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