Researchers from University of Kent in the UK found that the replaced voice boxes would last much longer if they dealt with the fungal infection Candida albicans that was causing the silicone versions to fail.
They have developed clinical care for patients which is anticipated to be used worldwide for throat cancer patients.
It means patients may be able to carry on using silicone voice prosthesis for much longer, enabling them to still speak and reducing the risk of dangerous secondary chest infections.