Journal of Conservative Dentistry
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Year : 2018  |  Volume : 21  |  Issue : 2  |  Page : 175-179

An in vitro evaluation of the degree of pulp tissue dissolution through different root canal irrigation protocols

1 Department of Medicine and Surgery, University of Salerno, Salerno, Italy
2 Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples, Italy
3 Department of Endodontics, Faculty of Dentistry, University of Alexandria, Alexandria, Egypt
4 Department of Biomedical, Surgical and Dental Sciences, “Giorgio Vogel” Dental Clinics, University of Milan, Milan, Italy

Correspondence Address:
Alfredo Iandolo
Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JCD.JCD_49_18

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Aim: The aim of this study is to evaluate in vitro, using artificial lateral canals, the rate of dissolution of the pulp tissue through different protocols of canal irrigation. Materials and Methods: One hundred artificial canals provided with lateral canals have been used. Each lateral canal was filled with pulp tissue and calibrated to 0.002 mg. All canals were irrigated using five different protocols. Five groups have been used for the experiment: Group A, distilled water (control); Group B, preheated NaOCl; Group C, NaOCl heated inside the canal; Group D, NaOCl ultrasonically activated; and Group E, NaOCl heated inside the canal with ultrasonic activation. All samples were weighed through professional microbalance in three different phases: before insertion of the pulp tissue into the lateral canal, after insertion of the pulp tissue and, finally, after different protocols of irrigation. A statistical analysis with Kruskal–Wallis test and Mann–Whitney test was performed. Results: The partial dissolution of the pulp tissue inside the artificial lateral canal occurs only using the protocol with NaOCl heated inside the canal with ultrasonic activation. Other irrigation protocols are not able to dissolve the pulp tissue. Discussion and Conclusions: The main objective of endodontic therapy is the removal of damaged tissues and bacteria. Modern literature highlights that it is impossible to remove all the pulp tissues and bacteria from the whole endodontic space. Hence, to achieve excellence and get positive results in the short and long term, it is necessary to use techniques and technologies that may increase the degree of root canal detersion.

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