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Copyright of Dental Press Endodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Dental Press Endodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purpose: This case report aims at demonstrating the regenerative capacity of periodontal tissues after endodontic treatment of an endoperiodontal lesion associated with severe bone defect. Case report: A 68-year-old male patient, with no systemic impairment, sought endodontic treatment of tooth #21 due to the presence of a crown fracture. After the first interview, extra/intraoral clinical and radiographic examinations, the patient was diagnosed with pulp necrosis. In addition, the same tooth also had severe bone loss bucally and mesially, both 11-mm deep at probing. The patient was subjected to endodontic treatment, and soon after root canal filling, root canal preparation for intraradicular post placement and final radiograph were performed. Four years later, the patient returned for follow-up appointments and had new radiographic as well as tomographic examinations carried out. They revealed lateral canal filling with 6-mm neoformed bone bucally. Conclusion: Endodontic treatment was well indicated and successfully performed, as it allowed bone regeneration in the affected region. Clinical Significance: The presence of lateral canals might be directly related to endoperiodontal lesions and, as a result, bone loss. The correct diagnosis and treatment can lead to supporting bone tissue repair, thereby rendering the presence of the tooth in the oral cavity feasible. [ABSTRACT FROM AUTHOR]

The present study reports the case of a permanent tooth with incomplete root formation and lateral luxation endodontically treated with a therapeutic protocol associating calcium hydroxide, 2% chlorhexidine gel and zinc oxide (2:1:2 ratio) used as intracanal dressing with no need of replacement. In conventional apexification treatment, intracanal dressing normally includes calcium hydroxide paste associated with aqueous, viscous or oily vehicle periodically changed. The intracanal dressing used in this article, however, did not need to be replaced. The authors concluded that the protocol proved effective in treating a permanent tooth with open apex, as the tooth remained in the oral cavity fulfilling its esthetic and masticatory functions. Treatment cost and time were decreased. [ABSTRACT FROM AUTHOR]

Objective: This study aims at demonstrating the possibility and importance of filling different types of accessory canals in different teeth. Methods: The sample comprised 11 cases in which detailed knowledge of the inner anatomy of root canal systems associated with good use of the crown-down preparation technique - irrigation with 1% sodium hypochlorite and 17% trisodium EDTA for cleaning and removing smear layer - enabled different types of filling cement to drain. Results: Endomethasone, SealapexTM and Zinc Oxide - Eugenol filling cements proved to be efficient in root canal filling with the aid of the Tagger technique. Conclusion: It could be concluded that a combination of knowledge about anatomy, techniques and substances yield satisfactory results in 3D filling and hermetic seal of root canals, which leads to successful endodontic treatment. [ABSTRACT FROM AUTHOR]

Introduction: The case reported herein consists of two teeth of one single patient, initially immobilized with a semi-rigid retainer used for 15 days without endodontic intervention. Objective: The aim of this article is to report a case of two teeth with extrusive luxation treated with a filling paste of calcium hydroxide, 2% chlorhexidine gel and zinc oxide. Methods: After a one-month followup, patient's teeth did not present evidence of pulp vitality. Radiographic examination revealed signs of external resorption. Endodontic treatment was carried out in association with a new treatment protocol using intracanal dressing applied in one single session and remaining in the root canal for four years. Results: The filling paste remained in the root canal for 24 months without being replaced. The case presented improvements in periapical lesions without inflammatory resorption. Conclusion: The filling paste proves to be successful and effective in treating traumatized teeth with root resorption. [ABSTRACT FROM AUTHOR]

Objective: The aim of this study was to report the treatment of a tooth with cervical root perforation caused during endodontic treatment. Methods: The patient attended the endodontist's office with painful symptoms resulting from a cervical root perforation exposed to the oral cavity. The endodontic treatment was performed in multiple sessions using the dressing with calcium hydroxide and propylene glycol, in order to aid the decontamination of the root canal and the perforation. The root Objective: The aim of this study was to report the treatment of a tooth with cervical root perforation caused during endodontic treatment. Methods: The patient attended the endodontist's office with painful symptoms resulting from a cervical root perforation exposed to the oral cavity. The endodontic treatment was performed in multiple sessions using the dressing with calcium hydroxide and propylene glycol, in order to aid the decontamination of the root canal and the perforation. The root perforation was sealed with MTA because this material is capable of forming mineralized tissue due to its sealing ability, biocompatibility and alkalinity. In addition, the humidity present in the periodontal tissues can provide the necessary means to adapt the MTA on the walls of the perforation and its setting expansion, justifying its use in this case as it is a case of cervical perforation, a difficult site to control humidity. Conclusion: The authors concluded that MTA is an excellent material for sealing cervical root perforation. [ABSTRACT FROM AUTHOR]

Dental trauma may be considered one of the main causes of permanent teeth loss,and root fractures are relatively uncommon in these situations. Objective: The aim of this study was to report a clinical case of horizontal root fracture promoted by a dental trauma and discuss their clinical implications. Methods: The horizontal root fracture occurred at the middle third of the maxillary central incisor with separation of the fragments. The tooth was diagnosed with pulp necrosis, and the endodontic treatment was performed. Results: After a followup period of two years with radiographic and tomographic images root complications were not observed, neither painful symptomatology, highlighting the importance of a correct diagnosis which results in a good prognosis, preserving the esthetic and psychological integrity of the patient. [ABSTRACT FROM AUTHOR]

In this paper we describe the endodontic treatment of teeth with extensive periapical lesions through case reports. Objective: Analyze the effectiveness of change the intracanal medication with calcium hydroxide, reducing or eliminating the surgical procedures and still observe, by follow up, the periapical repair. Results: After clinical and radiographic examination and found the need for endodontic treatment,was performed the coronal opening, irrigation with sodium hypochlorite 1% and biomechanical preparation with manual endodontic files. The EDTA 17% was used for 3 minutes with manual shaking before application of the medication in all the sessions as well as all sessions before the final filling. Thus,the medication with calcium hydroxide and propylene glycol was inserted in the root canal and replaced whenever the medication had been partly resorbed. After the beginning of periapical repair,the filling of the root canals was performed by the technique of horizontal and vertical condensation and radiographic controls were performed according to the availability of the patients. Conclusion: In these case reports, the renovation of calcium hydroxide as root canal dressing showed efficient in the treatment of extensive chronic periapical lesions, repairing the bone and periodontal tissues and eliminated the need for surgical intervention. [ABSTRACT FROM AUTHOR]

The aim of this study is to evaluate, through a literature review, the effectiveness of various concentrations of sodium hypochlorite during endodontic treatment. It was possible to verify that the 0.5% sodium hypochlorite concentration needs more time to dissolve organic tissue while causing less irritation to periapical tissues. The 1% concentration showed lower loss of chlorine due to the presence of stabilizer, making the solution more reliable for long periods after open. The 2.5% concentration showed better bactericidal action and a good tissue dissolution time; the 5.25% concentration showed higher solvent potential and bactericidal effect, with lower surface tension and consequently better root canal decontamination. However, the highest concentration was also more toxic to periapical tissues, promoting greater irritation. Based on the literature review it can be said that the 2.5% sodium hypochlorite concentration, due to its less cytotoxic properties, is the most suitable for endodontic treatment of root canals. [ABSTRACT FROM AUTHOR]