There are two types of title in Ireland. The first is Land Registry title, this is a type of title which registers the ownership of land in a central registry called the Property Registration Authority of Ireland. This is a government guaranteed title. All titles have maps attached, one can apply at any time to the PRAI for a copy of your title. Up to about 2 years ago original title documents called 'Land Certificates' were issued for this type of title. The PRAI stopped issuing them 2 years ago and at the end of this year they will be abolished. So I doubt your title is land registry as a missing land certificate stops being a problem in a few weeks time when they cease to have any legal meaning.
The other type of title is 'Registry of Deeds' title. This is a system of registering 'deeds'- the documents whereby title is transferred or mortgaged. It's not guaranteed. It is a perfectly good title until the original deeds are lost- it can be reconstituted but there is a cost involved and it's always seen as slightly imperfect.
Over 90% of the land mass of Ireland is land registry, and the government are gradually introducing compulsory registration across the country- forcing all registry of deeds title to be registered in the land registry. This is an application for 'First Registration'. It is costly and not quick. However once done the title is then state guaranteed title and perfected.
The reason I would suggest you look for costs to do a First Registration is that you may have to do this at some point anyway, depending on which County you are in ( some counties already have compulsory registration, some are having it introduced in December, more to come later).