Effect of Apical Third Enlargement to Different Preparation Sizes and Tapers on Postoperative Pain and Outcome of Primary Endodontic Treatment: A Prospective Randomized Clinical Trial.

Introduction: The purpose of this study was to evaluate the effect of apical preparation size and taper on postoperative pain and healing after primary endodontic treatment.

Methods: One hundred and twenty patients with asymptomatic mandibular first molars with radiographic evidence of periapical pathology and with a periapical index (PAI) score ≥3 were randomly assigned to 2 groups, group 1 and 2, based on apical enlargement to 2 and 3 sizes larger than the initial apical binding file (IABF), respectively. Each group was further divided into subgroups A and B depending on the apical enlargement taper of 4% and 6%, respectively.

Minimal intervention treatment of crown-root fracture in a mature permanent tooth by MTA pulpotomy and Fragment Reattachment: A Case Report.

Treatment of crown-root fracture can be complicated, time-consuming and expensive. This paper presents a treatment approach that minimises intra-operatory intervention and preserves the biologic tissue. A 15-year-old boy reported for treatment of an oblique crown fracture in the left permanent maxillary central incisor (#21, Fédération Dentaire Internationale) with mature root apices.