Journal article
Erosive potentials of brewed teas
American journal of dentistry, Vol.26(5), pp.278-282
10/01/2013
PMID: 24479280
Abstract
PURPOSETo measure the pH, titratable acidity, fluoride concentration and erosive potential of brewed teas.METHODSBag teas were purchased to represent black, green, citrus, fruity, and floral tea flavors from Tulsi, Bigelow, HyVee, Tazo, and Yogi brands and brewed (1 bag/240 ml) in boiling water for 3 minutes. The pH, titratable acidity, and fluoride concentrations were measured. Following these measurements, a representative tea from each flavor was selected for investigation of erosion potential. Six extracted human molars were randomly assigned to each tea. Teeth were painted with fingernail polish to expose a 1 x 4 mm window and then soaked in tea for a total of 25 hours with teas refreshed every 5 hours. Teeth were then sectioned using a microtome and photographed using a polarized light microscope. Lesion depths (i.e., eroded surfaces) were measured using Image Pro Plus software. Differences in physiochemical properties and lesion depths between beverages were investigated using one-way ANOVA with post-hoc Tukey's HSD test. Relationships among lesion depths and physiochemical properties were evaluated using the Pearson correlation test.RESULTSpH, titratable acidity and fluoride concentrations differed between tea flavors (P < 0.05) and between brands (P < 0.05). Lesion depths produced by the citrus tea (83.1 +/- 10.3 microm) were greater than those produced by the fruity tea (56.5 +/- 6.1 microm); both teas produced greater depths than black (30.1 +/- 7.4 microm), floral (25.0 +/- 3.2 microm) or green (22.3 +/- 6.3 microm) teas (P < 0.05). pH (r = -0.96; P = 0.009) was inversely and titratable acidity (r = 0.97; P = 0.006) was positively associated with lesion depths.
Details
- Title: Subtitle
- Erosive potentials of brewed teas
- Creators
- Julie L HendricksTeresa A MarshallJeffrey D HarlessMary M HoganFang QianJames S Wefel
- Resource Type
- Journal article
- Publication Details
- American journal of dentistry, Vol.26(5), pp.278-282
- PMID
- 24479280
- ISSN
- 0894-8275
- Language
- English
- Date published
- 10/01/2013
- Academic Unit
- Preventive and Community Dentistry; Dental Research
- Record Identifier
- 9984627300102771
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