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| Title |
Polyphenols in Green Tea and Coffee Show Anti-Carious Effects
|
| Clinical Question |
In an adult population, will dietary bioflavonoids found in green tea reduce risk of dental caries compared to antioxidant-rich coffee? |
| Clinical Bottom Line |
Research on bioflavonoid supplementation in vitro has shown a reduction in dental caries. |
| Best Evidence |
(you may view more info by clicking on the PubMed ID link) |
| PubMed ID |
Author / Year |
Patient Group |
Study type
(level of evidence) |
| #1) 19397954 | Ferrazzano/2009 | Studies on coffee and tea polyphenols | Narrative review | | Key results | Cocoa and coffee polyphenols seems to deter bacterial adhesion on the surface of teeth. The polyphenols in tea exert different actions: tea slowly releases catechins and theaflavins, which slow Streptococcus growth; it can also inhibit the preliminary adherence of Sreptococcus mutans to the tooth surface. | | #2) 24909065 | Meckelburg/2014 | Deciduous molars from children and saliva taken from middle-aged adults | Laboratory study | | Key results | The study revealed the coffee species Coffea canephora had an inhibitory action against dental biofim. "C. canephora caused bacterial lysis and consequent release of calcium into the medium." However, the results indicate that the coffee extract did not show a significant difference compared the negative control, purified water, in the amount of calcium released. | | #3) 19955272 | Signoretto/2010 | 75 dentate adults without antibiotic treatment | Cross-sectional study | | Key results | Coffee, red wine, and water drinkers are shown to have different oral microbial profiles. Roasted coffees produce melanoidins, which have antioxidant activities and showed inhibitory activity against the adherence of S. mutans, S. aureus, and enterobacteria to hydroxyapatite beads. | | #4) 19397954 | Ferrazzano/2011 | 66 patients, 12-18 years, in good physical condition | RCT | | Key results | The infusion of green tea into a mouthwash resulted in a reduced level of salivary bacteria streptococci and lactobacci. Group A, which used the green tea-infused mouth rinse, showed a significant (P<.001) decrease in salivary streptococci and lactobacilli. Group B, which used a placebo mouth rinse, did not show a statistically significant difference in either of the bacterias. | |
| Evidence Search |
Search “Dental Caries” [Mesh] Search “Antioxidants”[Mesh] Search “Bioflavonoids”[Mesh] |
Comments on
The Evidence |
Validity: The evidence presented in these studies appears valid and has demonstrated the potential value of bioflavonoid supplementation in helping to prevent future dental caries. There needs to be more randomized controlled studies comparing the anticaries effects of different bioflavonoids. |
| Applicability |
Coffee and green teas are readily accessible. These drinks are non-toxic and have potential anti-carious effects. Prescriptions are not necessary to access these beverages. Because of these reasons any clinician can implement these systems. |
| Specialty/Discipline |
(Public Health) (General Dentistry) |
| Keywords |
Bioflavonoids, antioxidants, green tea, coffee, dental caries
|
| ID# |
2837 |
| Date of submission: |
04/16/2015 |
| E-mail |
lawm@livemail.uthscsa.edu |
| Author |
Mimi Law |
| Co-author(s) |
|
| Co-author(s) e-mail |
|
| Faculty mentor/Co-author |
Georgiana S. Gross, MPH |
| Faculty mentor/Co-author e-mail |
GROSSG@uthscsa.edu |
Basic Science Rationale
(Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?) |
post a rationale |
| None available | |
|
Comments and Evidence-Based Updates on the CAT
(FOR PRACTICING DENTISTS', FACULTY, RESIDENTS and/or STUDENTS COMMENTS ON PUBLISHED CATs) |
post a comment |
| None available | |
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