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      An in vitro stereomicroscopic comparative evaluation of a combination of apex locator and endodontic motor with an integrated endodontic motor

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          To compare the efficacy of an integrated apex locator and an apex locator and endodontic motor assembly in maintaining the working length when operated under autoreverse mode.

          Study Design:

          Thirty distobuccal roots of intact maxillary first molars were taken and access cavities were prepared. The teeth were divided into Group I: Prepared with TCM Endo V and Group II: Prepared with ProPex and NSK assembly. The instrumentation was ended in ProTaper F3 file, which was cemented in the canal. The roots were sectioned, observed under a stereomicroscope and the distance from instrument tip to the apical foramen was measured.


          Mean difference in the deviation of two groups was 0.075 mm, P = 0.34 (>0.05) which was statistically insignificant when assessed with unpaired t-test.


          The assembly of ProPex-NSK Endo-mate DT and the apex locating endomotor TCM Endo V Nouvag are clinically acceptable.

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          Most cited references 26

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          Factors affecting the long-term results of endodontic treatment.

          The influence of various factors that may affect the outcome of root canal therapy was evaluated in 356 patients 8 to 10 yr after the treatment. The results of treatment were directly dependent on the preoperative status of the pulp and periapical tissues. The rate of success for cases with vital or nonvital pulps but having no periapical radiolucency exceeded 96%, whereas only 86% of the cases with pulp necrosis and periapical radiolucency showed apical healing. The possibility of instrumenting the root canal to its full length and the level of root filling significantly affected the outcome of treatment. Of all of the periapical lesions present on previously root-filled teeth, only 62% healed after retreatment. The predictability from clinical and radiographic signs of the treatment-outcome in individual cases with preoperative periapical lesions cases was found to be low. Thus, factors which were not measured or identified may be critical to the outcome of endodontic treatment.
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            Apical limit of root canal instrumentation and obturation, part 2. A histological study.

            The results of an in vivo histological study involving apical and periapical tissues following root canal therapy after different observation periods demonstrated the most favourable histological conditions when the instrumentation and obturation remained at or short of the apical constriction. This was the case in the presence of vital or necrotic pulps, also when bacteria had penetrated the foramen and were present in the periapical tissues. When the sealer and/or the gutta-percha was extruded into the periapical tissue, the lateral canals and the apical ramifications, there was always a severe inflammatory reaction including a foreign body reaction despite a clinical absence of pain.
              • Record: found
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              The position and topography of the apical canal constriction and apical foramen.


                Author and article information

                J Conserv Dent
                J Conserv Dent
                Journal of Conservative Dentistry : JCD
                Medknow Publications & Media Pvt Ltd (India )
                Sep-Oct 2013
                : 16
                : 5
                : 458-461
                Department of Conservative Dentistry and Endodontics, Gitam Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India
                [1 ]Department of Conservative Dentistry and Endodontics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
                [2 ]Department of Periodontics, Institute of Dental Sciences, Bhubaneshwar, Odisha, India
                Author notes
                Address for correspondence: Dr. CH Swarupa, Door No. 34-13-38, Rossilloon Street, Gnanapuram, Visakhapatnam, Andhra Pradesh, India. E-mail: dr.swarupach@ 123456gmail.com
                Copyright: © Journal of Conservative Dentistry

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                Original Article


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