The case against the Ontario Dental Association, charged with breaking election laws ahead of the municipal vote on fluoridation last October, is moving forward.

Crown prosecutors and a lawyer for the Ontario Dental Association (ODA) appeared in a Kitchener court Thursday.

The ODA lobbied in defence of fluoridation of the City of Waterloo's drinking water during a referendum last fall.

However, prosecutors say the group breached the Ontario Municipal Elections Act.

Opponents claim the rules were broken because the ODA campaigned in favour of fluoride, without registering to do so.

Voters narrowly rejected continued fluoridation of municipal water.

The case is closed to the public, and neither the defence nor the prosecution would comment to the media.

Both sides will return to court on Aug. 22 to confirm a trial date.