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Radiographic Assessment of the Technical Quality of Failed Endodontic Treatment Referred from General Dental Practitioners in
            Pahang, Malaysia: A retrospective study

            CONCLUSION                                         10.    Sjögren U, Hägglund B, Sundqvist G, Wing K. Factors
                                                                     affecting the long-term results of endodontic treatment.
                   From radiographic assessment, 80 % of the root    J Endod. 1990;16(10):498-504. doi:10.1016/S0099-
            canal  fillings  from  failed  cases  referred  from  general   2399(07)80180-4
            dental practitioners in Pahang were found to be inadequate.   11.    Ng Y-L, Mann V, Gulabivala K. A prospective study
            This finding indicates that there is still a substantial need   of the factors affecting outcomes of non-surgical root
                                                                     canal treatment: part 2: tooth survival. Int Endod J.
            for  reinforcement  of  correct  endodontic  procedures  and   2011;44(7):610-625. doi:10.1111/j.1365-
            continuing dental education for dental practitioners after   2591.2011.01873.x
            graduation.                                        12.    Ruddle CJ. Nonsurgical endodontic retreatment. J
                                                                     Calif Dent Assoc. 1997;25(11):769-775, 777, 779-86
            ACKNOWLEDGEMENTS                                         passim. http://www.ncbi.nlm.nih.gov/pubmed/9534440
                                                               13.    Ng Y-L, Mann V, Gulabivala K. Outcome of
                   We would like to thank the Director General of    secondary root canal treatment: a systematic review of
            Health Malaysia for his permission to publish this article,   the literature. Int Endod J. 2008;41(12):1026-1046.
            and the authors declare no conflicts of interest. This study   doi:10.1111/j.1365-2591.2008.01484.x
            was  approved  by  the  Medical  Research  and  Ethics   14.    Song M, Park M, Lee C-Y, Kim E. Periapical Status
            Committee KKM.NIHSEC.P18-2277(5) on 6  December          Related to the Quality of Coronal Restorations and
                                                th
            2018.                                                    Root Fillings in a Korean Population. J Endod.
                                                                     2014;40(2):182-186. doi:10.1016/j.joen.2013.10.017
                                                               15.    Kielbassa AM, Frank W, Madaus T. Radiologic
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