Can you re-sterilise unused portions of synthetic bone graft material?

Generally not a good idea.

calcium sulphate is anhydrous so not a great plan to bring it into contact with steam...

As a general rule, any material opened in the surgical room should be disposed afterwards and not reused.

Think it would need to be gamma irradiated. Not worth the hassle or cost. So

I have always wondered if microwaving it would sterilise it/ in an uneffected state.

I always wondered the same but not for economical graft like this but for expensive ones. ETO sterilization can be considered which many of your medical consumables including disposable syringes are sterilized with. If you are associated with a corporate hospital and if the hospital authorities permits and only if the graft is untouched may be it can be done. Couple of times we do it for mistaken opening of graft and membrane. I Dont know what people will react to it. But yeah we have done it at times

The information is very nicely shared, indeed very interesting and great learning to have...Please keep me up to date on other blog postings you do. Thanks for sharing the informative and useful blog with us. Dental clinic Ross Township