Outcome of orthograde retreatment after failed apicoectomy: use of a mineral trioxide aggregate apical plug.

Introduction: This controlled, single-center historic cohort study project evaluates treatment outcomes of a nonsurgical treatment approach after failed apicoectomy.

Methods: The treatment outcomes of nonsurgical retreatment after a failed apicoectomy were evaluated clinically and radiographically. The study cohort consisted of teeth that had received primary root canal treatment and subsequent apicoectomy elsewhere before the patients presented with post-treatment disease.

Treatment outcome of mineral trioxide aggregate or calcium hydroxide direct pulp capping: long-term results.

Introduction: This controlled, historic cohort study project continues a previously reported trial aiming to assess treatment outcome of direct pulp capping with mineral trioxide aggregate (MTA) versus calcium hydroxide (CH). Potential prognostic factors were re-evaluated on the basis of a larger sample size and longer follow-up periods.

Methods: Clinical and radiographic outcomes of 229 teeth treated with direct pulp capping between 2001 and 2011 were investigated 24 up to 123 months post-treatment (median = 42 months).

Treatment outcome of mineral trioxide aggregate: repair of root perforations-long-term results.

Introduction: This historical cohort study follows on a previously reported trial, with the aim of assessing the outcome for teeth with root perforations managed by the orthograde placement of mineral trioxide aggregate (MTA) and identifying potential outcome factors for such treatment with a larger sample size and longer follow-up periods than in the first phase of the project.

Methods: The treatment outcomes of 64 root perforations repaired between 2000 and 2012 with MTA were investigated. The root perforations were located in different areas of the root.

Treatment outcome of mineral trioxide aggregate in open apex teeth.

Introduction: This cohort study is the second phase of a previously reported trial. The primary aim was to assess the outcome of the treatment of teeth with open apices managed by the orthograde placement of mineral trioxide aggregate (MTA) apical plugs. The secondary goal was to identify potential outcome factors for this kind of treatment with a larger sample size and longer follow-up periods than in the first phase of the project.