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Root canal system

Lilian Vieira Oliveira, Thais Souza Maia, Karla Zancopé, Murilo de Souza Menezes, Carlos José Soares, Camilla Christian Gomes Moura
The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts (FGPs). Currently, there is no consensus in the literature regarding what is the best solution for the removal of debris after post-space preparation. This systematic review involved "in vitro" studies to investigate if cleaning methods of the root canal after post-space preparation can increase the retention of FGPs evaluated by the push-out test...
March 15, 2018: Brazilian Oral Research
Kaoutar Laslami, Sara Dhoum, Amine El Harchi, Iman Benkiran
Objectives: The aim of the study is to define the relationship between the apical preparation diameter and the apical sealing ability to highlight the importance of the preservation of the diameter and the original position of the apical foramen. Materials and Methods: 50 extracted maxillary incisors were randomly allocated into three groups of 15 teeth each (n = 15) according to the apical preparation size: Group 1: finishing file F1 corresponding to size 20 reached the working length (ProTaper Universal system Dentsply®); Group 2: prepared up to size 30 corresponding to finishing file F30; Group 3: prepared up to size 50 corresponding to finishing file F5...
2018: International Journal of Dentistry
Zhejun Wang, Ya Shen, Markus Haapasalo
INTRODUCTION: Conventional endodontic treatment includes instrumentation of the canals in most cases to size #25/.06 or larger, which changes the original canal wall anatomy. In recent years, energy-driven equipment, such as photon-induced photoacoustic streaming (Fotona LLC, Dallas, TX) and a multisonic GentleWave system (Sonendo Inc, Laguna Hills, CA), have been introduced to facilitate cleaning of minimally instrumented canals or even uninstrumented canals. The purpose of this study was to examine root canal wall anatomy in premolar teeth cleaned by a noninstrumentation method after #10 K-file patency examination...
March 14, 2018: Journal of Endodontics
Victor Feliz Pedrinha, Juliana Melo da Silva Brandão, Oscar Faciola Pessoa, Patrícia de Almeida Rodrigues
Advances in endodontics have enabled the evolution of file manufacturing processes, improving performance beyond that of conventional files. In the present study, systems manufactured using state of the art methods and possessing special properties related to NiTi alloys ( i.e ., CM-Wire, M-Wire and R-Phase) were selected. The aim of this review was to provide a detailed analysis of the literature about the relationship between recently introduced NiTi files with different movement kinematics and shaping ability, apical extrusion of debris and dentin defects in root canal preparations...
2018: Open Dentistry Journal
Hussam Alfawaz, Abdullah Alqedairi, Abdulrahman K Alkhayyal, Abdulaziz A Almobarak, Mohannad F Alhusain, Jorge N R Martins
OBJECTIVES: The purpose of this study was to determine the prevalence of the C-shaped root canal configuration, location of the longitudinal groove, sex differences, and unilateral/bilateral presence in mandibular first and second molars in a Saudi population using cone beam computed tomography (CBCT). MATERIALS AND METHODS: CBCT images for the mandibular first and second molars of 487 patients (a total of 529 first molars and 681 s molars) were evaluated. The teeth were assessed for the presence of C-shaped root canals according to Fan criteria...
March 13, 2018: Clinical Oral Investigations
Camila Galletti Espir, Camila Almeida Nascimento-Mendes, Juliane Maria Guerreiro-Tanomaru, Bruno Cavalini Cavenago, Marco Antonio Hungaro Duarte, Mário Tanomaru-Filho
OBJECTIVES: To evaluate the shaping ability and cleaning after oval root canal preparation using one or more instruments in reciprocating or rotary motion. MATERIALS AND METHODS: Oval-shaped mandibular incisors were selected, based on the radiographic diameter (2 ≤ diameter ratio ≤ 4), and assigned according to root canal preparation (n = 18): single-file (Reciproc R40); two reciprocating files (Unicone size 20 and 40, .06 taper) or Mtwo rotary files until a size 40, ...
March 10, 2018: Clinical Oral Investigations
Merete Markvart, Helena Fransson, Lars Bjørndal
OBJECTIVE: The aim of this study was to re-assess the adoption of certain endodontic technology and central treatment principles of root canal treatments as advocated by guidelines presented by the European Society of Endodontology. MATERIAL AND METHODS: The questionnaire included the same questions in 2003 and 2013. The general dental practitioners (GDPs) anonymously reported how frequent ('often', 'occasionally', and 'never') they used certain endodontic technology and adhered to central treatment principles...
March 9, 2018: Acta Odontologica Scandinavica
Y Ustun, S Düzgün, T Aslan, A Aktı
Introduction: The purpose of this study was to evaluate the efficiencies of different irrigation protocols in the removal of triple antibiotic paste (TAP) from root canals. Materials and Methods: A total of 127 extracted human maxillary incisor teeth were prepared. Then, root-end resection of 3 mm was accomplished to simulate immature apex model. The root canals were filled with TAP, after 21 days, randomly divided into nine groups according to irrigation systems and solutions (n = 13)...
March 2018: Nigerian Journal of Clinical Practice
Chengjun Sun, Jicheng Sun, Minmin Tan, Bo Hu, Xiang Gao, Jinlin Song
OBJECTIVES: The aims of this systematic review were to compare the incidence and intensity of postoperative pain after single-visit root canal treatment using manual, rotary and reciprocating instruments. METHODS: An extensive literature search in PubMed, EMBASE, Cochrane Library, and Web of Science was performed to identify investigations that evaluated the effects of different instruments on post-endodontic pain. Meta-analyses and additional analyses, including subgroup and sensitivity analyses, were conducted...
March 7, 2018: Oral Diseases
Yu-Chiao Wu, Wan-Chien Cheng, Pei-Wei Weng, Ming-Pang Chung, Chi-Chun Su, Ho-Sheng Chiang, Yi-Wen Cathy Tsai, Chi-Hsiang Chung, Yi-Shing Shieh, Ren-Yeong Huang
INTRODUCTION: The aim of this study was to assess the prevalence of complicated root canals in permanent mandibular central incisors (PMCIs) and its correlation with the presence of a distolingual root (DLR) in permanent mandibular first molars (PMFMs) using cone-beam computed tomographic imaging in a Taiwanese population. METHODS: A total of 400 patients (800 pairs of PMCIs and PMFMs) were qualified for further analysis. The prevalence of DLRs in PMFMs along with root canal configurations of PMCIs were assessed at subject and tooth levels...
February 27, 2018: Journal of Endodontics
C F Francisconi, A E Vieira, M C S Azevedo, A P Tabanez, A C Fonseca, A P F Trombone, A Letra, R M Silva, C S Sfeir, S R Little, G P Garlet
The chronic inflammatory immune response triggered by the infection of the tooth root canal system results in the local upregulation of RANKL, resulting in periapical bone loss. While RANKL has a well-characterized role in the control of bone homeostasis/pathology, it can play important roles in the regulation of the immune system, although its possible immunoregulatory role in infectious inflammatory osteolytic conditions remains largely unknown. Here, we used a mouse model of infectious inflammatory periapical lesions subjected to continuous or transitory anti-RANKL inhibition, followed by the analysis of lesion outcome and multiple host response parameters...
March 1, 2018: Journal of Dental Research
Chaturi Neboda, Robert P Anthonappa, Nigel M King
AIM: To investigate the root canal morphology of hypomineralised second primary molars(HSPM) using micro-CT(μCT) compared with non-hypomineralised second primary molars (non-HSPM). METHODOLOGY: Ten HSPM and 10 non-HSPM were divided into Group 1(maxillary HSPM), Group 2 (mandibular HSPM), Group 3(maxillary non-HSPM), and Group 4 (mandibular non-HSPM). All teeth were scanned using μCT to assess the following parameters: (i) root canal configuration, (ii) pulp volumes, and (iii) the influence of the root canal system landmarks on access cavity outline forms and canal curvature...
March 2, 2018: International Journal of Paediatric Dentistry
Abbas Mesgarani, Mahmoud Reza Hamidi, Sina Haghanifar, Shabnam Naiemi, Ali Bijani
Background: Apical transportation (AT) of the root canal moves the physiologic canal terminus to a new location on the external root surface and results in the accumulation of debris and residual microorganisms due to inadequate cleaning and shaping of the canal end. This study aimed to assess the prevalence of AT following canal preparation with Mtwo and Reciproc R25 using cone-beam computed tomographic (CBCT). Materials and Methods: In this in vitro study, 40 mesiobuccal root canals of the maxillary molars with 19-22 mm length and (>40°) taper were prepared in two groups using Mtwo and Reciproc R25 rotary systems along with irrigation with 2...
January 2018: Dental Research Journal
Hyun-Jin Park, Min-Seock Seo, Young-Mi Moon
Objectives: The aim of this study was to compare root canal volume change and canal transportation by Vortex Blue (VB; Dentsply Tulsa Dental Specialties), ProTaper Next (PTN; Dentsply Maillefer), and ProTaper Universal (PTU; Dentsply Maillefer) nickel-titanium rotary files in curved root canals. Materials and Methods: Thirty canals with 20°-45° of curvature from extracted human molars were used. Root canal instrumentation was performed with VB, PTN, and PTU files up to #30...
February 2018: Restorative Dentistry & Endodontics
P Montero-Miralles, J Martín-González, O Alonso-Ezpeleta, M C Jiménez-Sánchez, E Velasco-Ortega, J J Segura-Egea
Regenerative endodontic procedures (REPs) are biologically based procedures planned to replace damaged tissues, including dentinee and root structures, as well as cells of the pulp-dentine complex. Effective sterilization of the root canal is essential in REPs, and antibiotics have been widely used to disinfect root canals. The aim of this paper was to review the scientific literature on 1) Effectiveness of antibiotics used in REPs against bacteria implicated in endodontic disease; 2) Scientific evidence supporting the use of topical antibiotics in REPs; 3) Clinical implications of the use of antibiotics in REPs and the possible side effects; 4) Effect of antibiotics on dental pulp stem cells; and 5) Ongoing research on the use of antibiotics in REPs...
February 26, 2018: International Endodontic Journal
Banu Öter, Nursen Topçuog Lu, Mehmet K Tank, Sevi Burçak Çehreli
BACKGROUND: A successful primary root canal treatment depends on effective shaping and cleaning the root canal system and finally filling it with a hermetic sealer. Clinically, roots of primary teeth are difficult to shape and the irrigation/disinfection protocol has great importance on prognosis. OBJECTIVE: The present study evaluated the antibacterial efficiency of Endosafe (Orangedental GmbH & Co. KG), photo-activated disinfection (PAD; Orangedental GmbH & Co...
February 26, 2018: Photomedicine and Laser Surgery
Iussif Mamede-Neto, Álvaro Henrique Borges, Ana Helena Gonçalves Alencar, Marco Antonio Hungaro Duarte, Manoel Damião Sousa Neto, Carlos Estrela
Objective: To evaluate transportation (T) and centering ability (CA) of root canal preparations using continuous or reciprocating nickel-titanium endodontic files. Materials and Methods: Ninety-six mesiobuccal root canals of mandibular first and second molars were randomly divided into 6 groups (n=16) according to the rotary file used: 1. ProTaper Next; 2. ProTaper Gold; 3. Mtwo; 4. BioRaCe; 5. WaveOne Gold; 6. Reciproc. Root canals were prepared according to manufacturer's instructions...
2018: Open Dentistry Journal
Stephen J Johans, Kevin N Swong, Daniel J Burkett, Michael P Wemhoff, Sean M Lew, Chirag R Patel, Anand V Germanwala
Superficial siderosis (SS) of the CNS is a rare and often unrecognized condition. Caused by hemosiderin deposition from chronic, repetitive hemorrhage in the subarachnoid space, it results in parenchymal damage in the subpial layers of the brain and spinal cord. T2-weighted MRI shows the characteristic hypointensity of hemosiderin deposition, classically occurring around the cerebellum, brainstem, and spinal cord. Patients present with progressive gait ataxia and sensorineural hearing impairment. Although there have been several studies, case reports, and review articles over the years, the clear pathophysiology of subarachnoid space hemorrhage remains to be elucidated...
February 16, 2018: Journal of Neurosurgery. Pediatrics
G Sánchez-Sanhueza, S Rebolledo, J López, M Encalada, H Bello-Toledo, D Rojas, C Medinam, M F Melendrez
Copper nanowires, Cu-NWs may have a good antimicrobial effect in endodontic treatment. The objective of this work was to synthesize, characterize and evaluate the antibacterial activity of Cu-NWs on strains obtained from human root canal. A wide distribution of Cu-NWs diameters from 30 to 90 nm was obtained with lengths ranging from 5 to 40 μm. Structural analysis of Cu-NWs showed crystalline planes, which corresponded to Cu, with preferential growth in the direction [110]. The geometric mean MICs was of 289...
July 1, 2018: Journal of Nanoscience and Nanotechnology
Ebtissam M Almadi, Amal A Almohaimede
Herbal remedies are used throughout the world, either in earlier or in recent times. The number of studies on this alternative therapeutic system increased in the last decades. In this paper, the relevant literature on the use of natural products in root canal therapy is revised from a MEDLINE database search. The uses of medicinal plants in endodontics include cleaning and disinfection of root canals, intracanal medicaments between appointments, sealer cements, and for removal of obturation material. Other studies showed the effect of natural products in pulpal and dentin repair...
February 2018: Saudi Medical Journal
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