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Paper Information

Journal:   PROGRESS IN BIOMATERIALS   2019 , Volume 8 , Number 1; Page(s) 23 To 29.

Effects of theobromine addition on chemical and mechanical properties of a conventional glass ionomer cement

Author(s):  Cevallos Gonzalez Fabricio Marcelo, Santos Araujo Erika Michele dos, Lorenzetti Simionato Maria Regina, Siriani Luciana Kfouri, Armas Vega Ana Del Carmen, Medeiros Igor Studart, Matos Adriana Bona*
* Department of Operative Dentistry, School of Dentistry, University of Sao Paulo (USP), Av. Prof. Lineu Prestes 2227, Cidade Universit?ria, Sao Paulo, SP CEP 05508?000, Brazil
In vitro effect of 1% theobromine addition on the physical and chemical properties of conventional glass ionomer (GIC) cement was investigated. Conventional GIC (GIC-C) and 1% theobromine added to GIC (GIC-THEO) specimens were compared regarding the microhardness (n = 10), sorption (n = 5), solubility (n = 5), color change (n = 10), fluoride release in saliva (n = 10) and the amount of biofilm deposition (n = 20). Compared against conventional GIC, adding 1% theobromine increased microhardness (p < 0. 05), while its sorption, solubility, color and fluoride release to saliva (p > 0. 05) remained unchanged. On the other hand, Streptococcus mutans biofilm amount deposited on its surface decreased statistically when theobromine was added to GIC (p < 0. 05). Based on the results, it could be concluded that 1% theobromine addition to GIC can be a good strategy as it keeps some of its properties and improves microhardness and biofilm deposits strengthening its role in the preventive approach of dentistry.
Keyword(s): Theobromine ·,Glass ionomer ·,Chemical properties ·,Mechanical properties ·,Biological properties
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