Polyphenol-enriched extract of Arrabidaea chica used as a dentin pretreatment or incorporated into a total-etching adhesive system: Effects on bonding stability and physical characterization

Author(s):Show less -

Mendes, Bruna Novaes ^[1] ; Bridi, Enrico Coser ^[1] ; Franca, Fabiana Mantovani Gomes ^[1] ; Turssi, Cecilia Pedroso ^[1] ; do Amaral, Flavia Lucisano Botelho ^[1] ; Basting, Rosanna Tarkany ^[1] ; Sousa, Ilza Maria de Oliveira ^[2] ; da Silva, Tania Mara ^[3] ; Goncalves, Sergio Eduardo de Paiva ^[3] ; Foglio, Mary Ann ^[2] ; Basting, Roberta Tarkany ^[1]

Affiliation

^[1] Sao Leopoldo Mand Res Inst, Rua Jose Rocha Junqueira 13, BR-13045755 Sao Paulo - Brazil

^[2] Univ Estadual Campinas, Fac Pharmaceut Sci, POB 6029, BR-13083859 Campinas, SP - Brazil

^[3] UNESP Univ State Sao Paulo, Inst Sci & Technol Sao Jose dos Campos, Ave Engn Francisco Jose Longo 777, BR-12245000 Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: Materials Science & Engineering C-Materials for Biological Applications; v. 116, NOV 2020.
• Web of Science Citations: 0

Abstract

The aim of this paper was to evaluate the physical properties and the long-term bond strength of a 2.5% polyphenol-enriched extract of Arrabidaea chica (AC) incorporated into both the phosphoric acid and the primer of a three-step total-etch adhesive, or into an aqueous solution as a dentin pretreatment. Fifty dentin surfaces received the treatments (n = 10): CON (control) - application of the three-step adhesive system (Adper Scotchbond Multipurpose, 3M ESPE); WAT - distilled water used as a pretreatment after dentin etching and before application of the adhesive system; ACPA -AC incorporated into the phosphoric acid; ACW - dentin pretreatment with AC incorporated into an aqueous solution after etching; ACP - AC incorporated into the primer. Microtensile bond strength tests were performed after 24 h, 6 and 12 months of storage. Slices from the resindentin interface were obtained for scanning electron microscopy analysis of the hybrid layer. Degree of conversion of AC incorporated into the primer was evaluated. The particle size, polydispersity index and zeta potential of all the solutions prepared by incorporating AC (phosphoric acid, primer and distilled water) were measured by dynamic light scattering, which brought about changes after incorporation. Degree of conversion of the primer was not affected after incorporating AC. ACP showed lower microtensile bond strength values than the other groups. Bond strength decreased after 6 months of storage, stabilizing at the 12-month evaluation. Therefore, use of AC incorporated into the primer led to lower bond strength values, since AC modified the physical properties (particle size, polydispersity index and zeta potential) of the primer, but did not change the degree of conversion. Application of AC as a dentin pretreatment did not affect bond strength or the micromorphological characteristics of the hybrid layer. (AU)

• FAPESP's process: 17/08082-7 - Arrabidaea chica incorporate into the phosphoric acid or primer of a conventional adhesive system or as a dentin pretreatment in aqueos solution: physical properties evaluation of the solutions and influence on dentin physico-mechanical properies
• Grantee: Roberta Tarkany Basting Höfling
• Support Opportunities: Regular Research Grants
• FAPESP's process: 16/04343-8 - Arrabidaea chica extract applied as a dentin pre-treatment or when incorporated into a conventional adhesive system: influence on long-term bond strength
• Grantee: Bruna Novaes Mendes
• Support Opportunities: Scholarships in Brazil - Scientific Initiation