Fluoride containing bioactive glass composite for orthodontic adhesives – ion release properties

Bioactive glass (BAG) is a material that degrades and dissolves upon contact with a physiological fluid to allow controlled release of therapeutic ions and the formation of an apatite like surface layer [1,2]. It was first developed by Hench in 1969 [3] and was called Bioglass ®(BAG 45S5), which has been in clinical use since 1985. The BAG 45S5 is composed of 46.1 SiO2, 2.6 P2O5, 24.4 Na2O and 26.9 CaO (mol%). The composition of BAGs strongly influences their dissolution kinetics and their ability to form apatite (bioactivity), whereby the concentration of the glass form ers (silica and phosphate) and the degree of polymerisation (network connectivity) are the main determinants of its bioactivity [4].
Source: Dental Materials - Category: Materials Science Authors: Source Type: research