I don't ask about clinical and commercial differences, but I would like to know more from the industrial, chemical and physical point of view. What are the real differences between glass and quartz fibers? For example, a typical quartz fiber post is the RTD Double-Tapered Quartz Post (RTD Geneve/Dentsply International) and typical glass fiber posts are the Luscent Anchors Glass Post (Dentatus) and the RelyX Fiber Post (3M).
Yes, anything that is harder than glass can cut glass (providing it has a sharp edge), and quartz is harder than glass.
Quartz has a Mohs hardness rating of 7, and glass a rating of 5.5, so quartz can most definitely scratch glass. If scratched deeply enough, the glass is cut.
