On the effect of water fluoridation on lowering childhood tooth decay, research will be done.
Following a split in the court over the matter the month before, Tynwald members unanimously voted to support the public health initiative at the June sitting.
Health Minister Lawrie Hooper proposed it in an amendment as a possible more economical substitute for fluoride varnish.
A committee looking into children's oral health had suggested that.
The public health directorate will now create a research document, which the Council of Ministers will review by December 2023.
"Exploring fluoridation of water, the effects this may have on the population," according to the amendment, was the group's mandate.
Additionally, it included examining "how much tooth decay would be reduced and whether it would be a more efficient and effective way to prevent tooth decay in children than targeted fluoride varnish application.".
In February of next year, the report and any conclusions and suggestions must be posted on the Tynwald register.
Following an investigation by the Social Affairs Policy Review Committee, it was discovered that there were approximately 780 children waiting to register at one of the island's 12 dental offices, with efforts to address this situation being in part hampered by a shortage of dentists.
According to the report, hospital admission rates for Manx children for tooth extractions were also "remarkably high" on the island.
Seven recommendations were made by the committee, one of which was to offer all children in pre- and primary school the opportunity to receive applications of fluoride varnish twice a year in an effort to lower levels of decay.
