Kurzfassung

Acid solubilization of enamel and dentin contribute to wear and sensitivity susceptibility. Solubilization behavior of roots and enamel are complex with contributions from the chemistry of hydroxyapatite
components, crystalline structure and orientation of mineral within the tooth substrate. Likewise solubilization dynamics are affected by fluid composition (acid type, flow dynamics) on tooth surfaces. Lastly, the effects of surface protection chemistries are varied – ranging from reparative...Acid solubilization of enamel and dentin contribute to wear and sensitivity susceptibility. Solubilization behavior of roots and enamel are complex with contributions from the chemistry of hydroxyapatite
components, crystalline structure and orientation of mineral within the tooth substrate. Likewise solubilization dynamics are affected by fluid composition (acid type, flow dynamics) on tooth surfaces. Lastly, the effects of surface protection chemistries are varied – ranging from reparative mineral treatments, various fluorides (stannous fluoride, sodium fluoride) and calcium phosphate surface active builders such as hexametaphosphate, phytic acid and pyrophosphate.
Rotating disc dissolution conditions are ideal for studying oxidative and acid solubilization processes as
hydrodynamic conditions can be controlled and eliminated as a source of variability. Proposed Research: This research will use a rotating disc dissolution apparatus to carry out a 3D DOX
assessment of progressive dissolution effects various acids on enamel and dentin surfaces and effects of protection chemistries. Polished enamel and dentin discs will be prepared and mounted under RD set up and solubilized in test acids including dietary beverages, simulated beverages and carious conditions. Surface effects will be monitored by profilometry (MBC) and then through surface histomorphology (CLSM , ESEM and SEM).
Protection chemistries will be evaluated by cycling conditions of topical treatment and RD solubilization in a kinetics fashion.» weiterlesen» einklappen