The defendant dentist brought a motion for partial summary judgment in a dental malpractice action, arguing that claims relating to treatment before a specified date were statute‑barred under the Limitations Act, 2002.
The plaintiffs had originally commenced an action concerning later dental treatment but later amended the pleading to include earlier procedures and alleged failures to treat additional teeth.
The court held that the amendments asserted new causes of action rather than merely providing further particulars of the original claim.
Applying the discoverability principles under ss. 4 and 5 of the Limitations Act, the court found the plaintiffs knew or ought to have known of the potential negligence years earlier based on communications with subsequent dental specialists.
The claims relating to treatment before the specified date were therefore outside the limitation period.