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  1. Sodium Hypochlorite Accident: A Systematic Review
    Guivarc'h M, Ordioni U, Ahmed HM, Cohen S, Catherine JH, Bukiet F
    J Endod, 2017 Jan;43(1):16-24.
    PMID: 27986099 DOI: 10.1016/j.joen.2016.09.023
    INTRODUCTION: Sodium hypochlorite (NaOCl) extrusion beyond the apex, also known as "a hypochlorite accident," is a well-known complication that seldom occurs during root canal therapy. These "accidents" have been the subject of several case reports published over the years. Until now, no publication has addressed the global synthesis of the general and clinical data related to NaOCl extrusion. The main purpose of this article was to conduct a systematic review of previously published case reports to identify, synthesize, and present a critical analysis of the available data. A second purpose was to propose a standardized presentation of reporting data concerning NaOCl extrusions to refine and develop guidelines that should be used in further case report series.

    METHODS: A review of clinical cases reporting NaOCl accidents was conducted in June 2016 using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses checklist; it combined an electronic search of the PubMed database and an extensive manual search.

    RESULTS: Forty full-text articles corresponding to 52 case reports published between 1974 and 2015 were selected. Four main categories of data were highlighted: general and clinical information, clinical signs and symptoms of NaOCl extrusions, management of NaOCl extrusions, and healing and prognosis. Overall, up to now, clinical cases were reported in a very unsystematic manner, and some relevant information was missing.

    CONCLUSIONS: A better understanding of the potential causes, management, and prognosis of NaOCl accidents requires a standardization of reported data; this study proposes a template that can fulfill this objective.

    Matched MeSH terms: Root Canal Preparation/adverse effects*
  2. Incidence of pain after biomechanical preparation: a review of 302 cases treated by dental students
    Mohd Sulong MZ, Abu-Hassan MI, Abdul Razak AA, Embong A
    Singapore Dent J, 1996 Jul;21(1):31-5.
    PMID: 10597181
    Records of 302 root-filled teeth treated by dental undergraduates were reviewed by four lecturers in the Department of Conservative Dentistry, University of Malaya. Preoperative and operative factors were evaluated for their association with postoperative pain experience of patients during the visit immediately after completion of biomechanical preparation. Eighty four percent of patients did not experience any pain after biomechanical preparation whilst the remaining 16 percent only complained of slight or moderate pain. The incidence of pain after biomechanical preparation is not high even when performed by inexperienced undergraduates. Teeth with a pre-existing painful condition had a higher chances of postoperative of pain. The incidence of postoperative pain was halved when teeth were associated with a sinus tract.
    Matched MeSH terms: Root Canal Preparation/adverse effects*
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