Dental defects of erosive nature are defined as irreversible losses of dental tissue. caused by long lasting and repeated action of acids that dissolve top layer of hydroxyapatite and fluorideapatites crystal structure. under assumption that aggressive factor is not of bacterial nature. Acids that cause changes on teeth according to their origin are gastric. https://www.roneverhart.com/Propper-Synergy-Wildland-Shirt/