RecruitingDevice studyClinical Performance of AH Plus Jet® Root Canal Sealers in Single-cone ProtocolsA prospective, parallel-group, randomised, post-market clinical follow-up investigation evaluating the performance and safety of the modified formula of the AH Plus Jet® Endodontic Sealer (also referred to as ES) and the predicate AH Plus Jet® Root Canal Sealing material (also referred to as RCS). Around 150 teeth will be randomly assigned to receive either ES or RCS root canal treatment using the single-cone technique. A maximum of 2 teeth per participant will be included and "tooth" will be considered the statistical unit and hence considered independent even if the teeth are in the same participant. Participants will be followed up for a period of 24 months to assess the outcomes.