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Endodontics Files

M Laske, N J M Opdam, E M Bronkhorst, J C C Braspenning, M C D N J M Huysmans
To improve patient dental care, it is necessary to identify possible risk factors for the failing of restorations. This practice-based cohort study investigated the performance and influence of possible risk factors at the level of the practice, patient, tooth, and restoration on survival of direct class II restorations. Electronic patient files from 11 Dutch general practices were collected, and 31,472 restorations placed between January 2015 and October 2017 were analyzed. Kaplan-Meier statistics were performed; annual failure rates (AFRs) were calculated; and variables were assessed by multivariable Cox regression analysis...
February 20, 2019: Journal of Dental Research
Ibrahim H Abu-Tahun, Sang Won Kwak, Jung-Hong Ha, Asgeir Sigurdsson, Mehmet Baybora Kayahan, Hyeon-Cheol Kim
This study compared the torque generation during canal shaping with a nickel-titanium endodontic instrument according to the extent of glide-path establishment. Seventy-five simulated S-shaped canal blocks were divided into five groups (n = 15) according to the number of repetitive insertions to the working length using a One G glide-path instrument: groups with 5, 10, 15, and 20 insertions as well as group Z without glide-path establishment. When the tip of the One G file reached the working length, the file was moved back and forth repetitively at the working length for the designated number of times for each group...
February 5, 2019: Materials
D F Oda, M A H Duarte, F B Andrade, L T Moriyama, V S Bagnato, I G de Moraes
AIM: To evaluate the capacity of carbopol gel to maintain the intensity of a LED curing light (blueLED) along the length of prepared root canals in bovine teeth, and to assess the antimicrobial capacity of curcumin photoactivated by a LED curing light in the presence of carbopol gel. METHODOLOGY: Experiment 1: Eight straight roots of bovine incisors were standardized to a length of 15 mm, and the root canals instrumented up to a size 120 K-file. The LED curing light was irradiated inside the root canals using an aluminium collimator (1...
February 5, 2019: International Endodontic Journal
Glynn Dale Buchanan, Nichola Warren
Background: The concept of single-use of endodontic files remains controversial in the published literature. The extent and attitudes concerning the single-use of endodontic hand files is currently unknown in many countries. Aim: The prevalence and perceptions regarding the single-use of endodontic files was investigated in this descriptive observational study. Methods: A questionnaire regarding the perceptions and usage protocols of endodontic files was developed...
January 2019: Journal of Infection Prevention
Christopher I Udoye, Hamid Jafarzadeh, Jun-Ichiro Kinoshita, Atsufumi Manabe, Mikihiro Kobayashi
AIM: Teeth extraction is an important problem in elder patients. Although some of these teeth have been endodontically treated, many of them may be subjected to extraction. The reasons for extraction are important for prevention planning in further patients. The aim of this study was to assess the prevalence and important reasons for extraction of endodontically treated teeth in adult Nigerians. MATERIALS AND METHODS: This study involved a retrospective examination of 2,000 case files in the archives of the University of Nigeria Teaching Hospital...
December 1, 2018: Journal of Contemporary Dental Practice
Akanksha Bhatt, Balakrishnan Rajkumar
Aim: This in-vitro study evaluated and compared the flexural fatigue resistance for Hero Shapers, Hyflex CM, One Shape, Profile Vortex and Protaper Next rotary NiTi files. Method and materials: Total 25 rotary NiTi files allocated to each experimental group were tested in a simulated constructed apparatus with an angle of curvature 60° & radius of curvature 5 mm. Each experimental file was coated with EDTA gel and was placed in endodomotor handpiece with rubber stopper at support steel cylinder and its end between two shaping steel cylinders on the simulated apparatus...
April 2019: Journal of Oral Biology and Craniofacial Research
R Shresha, D Shrestha, R Kayastha
Background Pain after root canal therapy is unwanted yet common experience for the patient and unpleasant for the dentist so it is always desirable to predict such pain. Objective To evaluate the frequency, intensity and associated factors of post-operative pain after single visit endodontic therapy on teeth with vital pulps. Method A total of 418 single visit root canal treatments were performed on patients of age 18 years and above by two endodontists. Canals were shaped with rotary ProTaper files. After the canal preparation, the canals were obturated, using lateral compaction technique, with ProTaper universal gutta-percha and AH-Plus sealer...
April 2018: Kathmandu University Medical Journal (KUMJ)
Gema Fernández-Pazos, Benjamín Martín-Biedma, Purificación Varela-Patiño, Manuel Ruíz-Piñón, Pablo Castelo-Baz
Background: The aim of this study was to evaluate the fracture and defects observed in ProTaper Next files discarded after a normal clinical use. Material and Methods: 571 ProTaper Next rotary instruments were collected after clinical use from the clinic of endodontics over 12 months. The length of the files was measured using a digital caliper to determine any fracture, later all the files were evaluated under a stereomicroscope to observe defects such as unwinding, curving or fracture...
November 2018: Journal of Clinical and Experimental Dentistry
Gül Çelik, Murat Maden, Ahmet Savgat, Hikmet Orhan
Background: Since the introduction of nickel-titanium (Ni-Ti) instruments to dentistry, a wide variety of Ni-Ti instruments have become commercially available. These Ni-Ti instruments are expensive, which limits their usage in developing countries and forces practitioners to use instruments repeatedly. Another problem is the possible prion cross-contamination associated with the multiple usage of endodontic instruments. In addition, the use of these instruments requires new skills and experience...
2018: PeerJ
Robert James Lee, Jithendra Ratnayake, Arthi Veerasamy, Carolina Loch, Peter Cathro, Paul A Brunton
Background: To determine the demographic profile and practising arrangements of general dentists in New Zealand. Methods: A questionnaire comprising 19 sections with 125 questions was distributed via mail to 351 general dentists in New Zealand who were selected, at random, from the Dental Council of New Zealand's 2016 register. Results: Two hundred and four questionnaires were returned, of which 188 were usable giving a response rate of 53...
2018: International Journal of Dentistry
Anjum Chaudhary, Mohit Kumar, Sonali Taneja
Background: In recent years, fibre-reinforced composite posts have been proposed for the restoration of root filled teeth as an alternative to pre-fabricated posts or metal dowels. Aims and objectives: The aim of the study was to analyze the effect of endodontic irrigants used for removal of calcium hydroxide on the push-out bond strength of fiber posts to root canal dentin. Methods: Forty human permanent single-rooted mandibular premolars with relatively straight roots were taken and access cavities were prepared and biomechanical preparation done using Rotar Y protaper file till size F2...
October 2018: Clujul Medical (1957)
Lilian Rachel de Lima Aboud, Bernardo Camargo Dos Santos, Ricardo Tadeu Lopes, Leonardo Aboud Costa Viana, Miriam Fátima Zaccaro Scelza
In order to evaluate the volume of dentinal cracks taking into account the age of the dentin and the type of file system used for endodontic procedures, forty freshly extracted single-rooted lower incisive teeth presenting similar root volume, were divided into two groups according to the age of the patient: Group Young (18 - 30 years old) and Group Old (60 years old or more). Each specimen was scanned by microcomputed tomography (micro-CT) in three stages: (i) before any treatment, (ii) after endodontic treatment with Reciproc files (REC), and (iii) after subsequent endodontic retreatment...
November 2018: Brazilian Dental Journal
Berkan Celikten, Reinhilde Jacobs, Karla de Faria Vasconcelos, Yan Huang, Eman Shaheen, Laura Ferreira Pinheiro Nicolielo, Kaan Orhan
AIM: To assess blooming artifacts caused by root canal sealers in CBCT images compared with those that appeared in micro-CT scan images used as references. MATERIALS AND METHOD: Thirty freshly extracted human mandibular central incisors were used. Root canals were prepared with nickel titanium files with an ISO size 40/0.06 taper and filled with a single cone (40/0.06 taper) and three different sealers. The samples were divided into the following three groups with 10 roots each: (I) AH Plus sealer; (II) Sure Seal Root; and (III) Total BC sealer...
November 28, 2018: Clinical Oral Investigations
Adham A Azim, Mohamed Tarrosh, Katharina A Azim, Lucila Piasecki
INTRODUCTION: The aim of this study was to compare the cyclic fatigue resistance of XP Shaper (XP), HyFlex EDM One File (EDM), and WaveOne Gold Primary (WOG) when operated according to their manufacturers' recommendations at different lengths and to investigate the cyclic fatigue limit of XP Shaper when operated at 3000 rpm. METHODS: One hundred fifty instruments from 4 different rotary systems (F2 Protaper Universal [PTU], WOG, EDM, and XP) were tested for their cyclic fatigue resistance in a simulated 90° curved canal at a 37°C water bath temperature at 3 different working lengths (15 mm, 17 mm, and 19 mm)...
December 2018: Journal of Endodontics
Julie Laloy, Hélène Haguet, Lutfiye Alpan, Daniel Raichman, Jean-Michel Dogné, Jean-Paul Lellouche
Inorganic transition metal dichalcogenide nanostructures are interesting for several biomedical applications such as coating for medical devices (e.g. endodontic files, catheter stents) and reinforcement of scaffolds for tissue engineering. However, their impact on human blood is unknown. A unique nanomaterial surface-engineering chemical methodology was used to fabricate functional polyacidic polyCOOH inorganic nanotubes of tungsten disulfide towards covalent binding of any desired molecule/organic species via chemical activation/reactivity of this former polyCOOH shell...
October 30, 2018: Nano Convergence
Ahmad A Madarati, Adnan A Habib
BACKGROUND: To establish the extent of using nickel titanium rotary instruments (NiTi-RIs), to identify reasons for using / not using NiTi-RIs, to explore usage modalities and to identify factors and measures that can increase implementation of NiTi-RIs in general dental practice. METHODS: Two pilot questionnaires were conducted on academic staff members at College of Dentistry, Taibah University, general dentists (GDs) and endodontists to finalise the questionnaire...
November 21, 2018: BMC Oral Health
Sathish Abraham, Disha Lalit Mehta, Shashidhar C Bellad, Sayli Patil, Aradhana Babu Kamble, Salil Chaudhari
AIM: This study aimed at assessing the trends of publications of Indian Endodontists in the field of rotary Endodontics in the PubMed database from 2000-2017. METHODS: The date of publication was set from 1st January 2000 to 31st December 2017, wherein keywords entered in the advanced search were "Indian" AND "Dental" AND "Rotary Endodontics". From the collected articles the following criteria were noted: year of publication, the name of the journal, status of the journal, name of the first author, state of origin and the rotary Endodontic file system used...
October 25, 2018: Open Access Macedonian Journal of Medical Sciences
Suraj Arora, Gurdeep Singh Gill, Priyanka Setia, Anshad Mohamed Abdulla, Ganapathy Sivadas, Vaishnavi Vedam
This article aims at providing an insight to the clinical modifications required for the endodontic management of severely dilacerated mandibular third molar. A 35-year-old patient was referred for the root canal treatment of the mandibular left third molar. An intraoral periapical radiograph revealed a severe curvature in both the canals. A wide trapezoidal access was prepared following the use of intermediate-sized files for apical preparation. Owing to increased flexibility, Hero Shaper NITI files were used for the biomechanical preparation and single cone obturation was carried out...
2018: Case Reports in Dentistry
Francesco Iacono, Chiara Pirani, Ana Arias, Josè C de la Macorra, Luigi Generali, Maria Giovanna Gandolfi, Carlo Prati
OBJECTIVES: To evaluate the impact of a modified motion on the fatigue life of four brands of nickel-titanium (NiTi) reciprocating instruments. MATERIALS AND METHODS: Cyclic fatigue (CF) resistance of 160 instruments was evaluated in an artificial stainless-steel canal (90° angle, 5-mm radius of curvature). WaveOne and WaveOne Gold (Denstply Maillefer, Baillagues, Switzerland) and Reciproc and Reciproc Blue (VDW, Munich, Germany) were tested with two different motions: (1) X-Smart Plus (Denstply Maillefer) endodontic motor and (2) a 4:1 contra-angle with an experimental motion (EVO) with different rotation angles and based on a sinusoidal acceleration...
November 5, 2018: Clinical Oral Investigations
M Tilja, P Rajavaara, M-L Laitala, P Pesonen, V Anttonen
AIMS: To investigate dental attendance of patients in different age groups after dental general analgesia (DGA) and procedures performed on these patients during the DGA and in dental care after the DGA during the follow-up period of almost 3 years. METHODS: The study population consisted of 66 patients who were treated under DGA at a municipal health centre in Oulu, Finland between September 2010 and June 2011. The electronic patient files of the DGA patients were accessible for data collection for the follow-up period of nearly 3 years...
October 31, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
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