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European Archives of Paediatric Dentistry

, Volume 18, Issue 4, pp 263–270 | Cite as

Are grape juices more erosive than orange juices?

  • A. P. C. A. BeltrameEmail author
  • R. A. T. Noschang
  • D. P. Lacerda
  • L. C. Souza
  • I. C. S. Almeida
Original Scientific Article
  • 149 Downloads

Abstract

Aims

To evaluate the chemical characteristics of grape and orange juices, and their erosive potential in the decrease of microhardness and the loss of enamel structure.

Methods

Five grape and orange juices were evaluated for pH, titratable acidity, calcium, phosphate, and fluoride concentration. De-ionised water and Cola soft drink were used as a negative and positive control, respectively. Twelve specimens of bovine enamel were immersed in beverages for 10 min at 37 °C, 3 times/day for 7 days. Erosive potential was quantified using microhardness and loss of enamel structure. Anova One Way, Student’s t test, Multiple Regression and Spearman Correlation (p < 0.05) were used to analyse the results.

Results

Powdered grape juice showed the lowest pH (3.18 ± 0.03) and pure grape juice presented the highest titratable acidity (5.48 ± 0.06 mL NaOH/100 mL). Fresh orange juice and soya-based grape juice revealed the lowest calcium (0.77 ± 0.12 mmol/L) and phosphate concentrations (0.35 ± 0.06 mmol/L), respectively. Among juices, powdered orange juice caused the greatest decrease in surface microhardness (SMH) (127.99 ± 40.47 ΔSMH) and grape juice from concentrate caused the greatest loss of enamel structure (13.30 ± 3.56 μm).

Conclusions

All of the evaluated juices contributed to dental erosion. Grape juices presented greater erosive potential than orange juices. Pure, powdered and concentrated grape juices showed similar loss of enamel structure to the Cola soft drink. The erosive potential of beverages was statistically correlated to pH, titratable acidity, calcium, phosphate and fluoride concentrations.

Keywords

Dental erosion Chemical properties Fruit juices 

Notes

Compliance with ethical standards

Conflict of interest

Beltrame APCA declares that she has no conflict of interest. Noschang RAT declares that he has no conflict of interest. Lacerda DP declares that she has no conflict of interest. Souza LC declares that she has no conflict of interest. Almeida ICS declares that she has no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

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Copyright information

© European Academy of Paediatric Dentistry 2017

Authors and Affiliations

  • A. P. C. A. Beltrame
    • 1
    Email author
  • R. A. T. Noschang
    • 1
  • D. P. Lacerda
    • 1
  • L. C. Souza
    • 2
  • I. C. S. Almeida
    • 1
  1. 1.Dentistry DepartmentFederal University of Santa CatarinaFlorianópolisBrazil
  2. 2.Clinical Analysis DepartmentFederal University of Santa CatarinaFlorianópolisBrazil

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