A report is due back to Tynwald next week about the possibility of adding fluoride to the Island's water supply.
Since 1986 it's introduction has been knocked back twice, this time however it comes with the backing of the IOM Dental Association.
But a number of island dentists disagree, and one of them - Dr Ian Rigby of Integral Dental - is presenting tonight at an open public meeting at the Methodist Church, Loch Promenade at 7pm.
A petition to block the proposed plans has gained hundreds of signatures so far.
We spoke to Iain Mack, the man behind the 'no fluoride in Manx water' website - he told us exactly what it would entail:
You can access the website by clicking here.
Difficult to compare Island's Hospice funding with UK, says minister
Mountain Road to close because of gales
New amber warning issued for tonight's storm
Police appeal over theft of building materials
One of capital's oldest buildings may become housing
New NHS safety rule to be brought in on Island
Two city streets to shut for over six months
Politician questions cost of emergency care