Endodontists experience using ultrasonics for removal of intra-canal fractured instruments (original) (raw)
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European journal of dentistry, 2009
To evaluate the success of certain methods that can be used in the removal of separated instruments from different levels in curved and straight canals. Instrument removal attempts were undertaken on 63 straight and 30 curved canals containing a pre-fractured instrument using the ultrasonics under the visualization of an operating microscope or conventional methods. In straight canals, a Masseran Kit was additionally used to these techniques. The success of instrument removal in relation to the techniques used and the location of the fragments in the root canal were evaluated. Successful treatment was defined by the removal or complete by passing of the fragments. The overall success rate was found 93.3% with ultrasonics and 66.6% when only conventional methods were used in curved canals. In straight canals, also the success rate was the highest with ultrasonics (95.2%). This was followed by conventional method (80.9%) and the least by Masserann Kit (47.6%). When the success rate wa...
Journal of endodontics, 2003
The removal of fractured rotary nickel-titanium instruments from small, curved root canals is one of the most complex operative procedures in endodontics. There have been many different devices and techniques developed to remove fractured instruments, but none are consistently successful and all show a high incidence of canal damage such as perforation. A technique using a staging platform and the use of modern ultrasonic tips with direct visualization through a dental operating microscope has recently been evaluated. The use of this technique in clinical practice is described in 24 cases and illustrated by 3 cases.
International Journal of Medical and Biomedical Studies, 2020
Background: Instrument separation has become a major concern in the endodontic practice today. In cases where the fractured fragment completely blocks the canal, the access of disinfecting irrigants to the root canal system is limited. Literature suggesting the guidelines on the management of broken instruments is scanty. This study was aimed to establish a preliminary guideline in the management of cases with instrument fracture using the Ultrasonic tips, the Instrument Retrieval System (IRS) and Instrument bypass under the Dental Operating Microscope (DOM). Methods: 40 cases were selected with fractured instruments and categorized as follows-location coronal or apical to curvature-size of greater than or less than 5 mm. Patients were informed about the procedure and its complications, following which consent was taken. Management was planned in three stages. Instrument retrieval with the aid of Ultrasonics was performed under the DOM in stage 1. Retrieval using IRS was performed in stage 2. Instrument bypass was performed in stage 3. Success rate was compared using statistical analysis by the StatPac software. Results and conclusion: Fractured fragments with a length of less than 5mm and straight line access was retrieved successfully under the DOM using the Ultrasonics in 87.5% cases. Retrieval of fragments greater than 5mm and with a straight line access was successful with the added use of the Instrument Retrieval system/ Instrument extractor in 71.4% cases.
Revista de Chimie, 2020
Fracture of endodontic files can be considered a real concern during root canal treatment. This procedural accident is caused both by overusing instruments due to economic reasons and using an incorrect technique in root canals with difficult anatomy. A broken endodontic file does not always regard the treatment as a failure. Frequently the broken fragment can be bypassed, and the root canal treatment completed. In other cases, when the file is separated in a tooth with associated apical disease, its retrieval using ultrasonic tips is advised. Separation of a file usually occurs in molars, mainly in the mesiobuccal canal due to major curvature, poor access or small diameter. Our research was conducted to determine the in vitro efficiency of the ultrasonic removal method and the bypass technique by using 40 extracted molars with moderately curved roots. #25 K-files were deliberately broken in the middle third of mesiobuccal root canals after making a small excavation in the apical th...
Ultrasonics: An Essential Endodontic Tool -A Review
In modern endodontics ultrasonics plays an important role for the success of endodontic therapy. Ultrasound is sound energy having frequency in the range of more than 20000 Hz. Ultrasonics has recently been used in endodontics for various steps like, modifying root canal access like removal of pulp stones and canal calcifications, activation of irrigating solutions in root canals, ultrasonic removal of posts during retreatment, removal of broken instruments and obstructions from canals, application of sealers to canal walls; condensation of gutta-percha during canal obturation, root end preparation during periapical surgery.
During Endodontic Treatment, Clinicians May Face Endodontic Procedural Mishaps Such As Broken Instruments. This Condition Is Associated With Potential Risk Of Contamination, Which Compromises The Healing Process. Management Of A Separated Instrument Is Difficult And Time Consuming And Requires Creativity As Well As Clinical Knowledge And Skills. Different Devices And Techniques Have Been Developed To Retrieve Fractured Instrument During The Endodontic Procedure But None Are Consistently Successful. Using Dental Magnification Like Dental Loupes Or Dental Operating Microscopes Makes The Procedure More Successful. This Case Report Describes The Management Of A Broken Instrument In Mesio Buccal Canal And Retreatment Of First Molar Using Ultrasonic Tips.
Quintessence international, 2018
OBJECTIVE The goal was to investigate the clinical value of two-dimensional radiographs and different radiographic measurement techniques before instrument removal with a microsonic technique. The aim was to find an easy-to-use technique for predicting the success of removal and case evaluation. Additionally the quality of root canal filling after instrument removal was assessed. METHOD AND MATERIALS This retrospective study analyzed patients' records and preoperative and postoperative periapical radiographs made using the paralleling technique. On preoperative radiographs, canal access angle and Schneider and Weine angle of root canal curvature were measured and compared. The Schäfer method was used for measuring the radius of curvature. In cases of successful removal taper, homogeneity and length of obturation were evaluated on postoperative radiographs. RESULTS A total of 123 cases of instrument removal were investigated. In total, 97 fragments (78.9%) were removed successful...
Aim: The case of a lower molar with apical periodontitis, which had previous root canal treatment and a fractured instrument in the distal root beyond the foramen, is presented. Background: The simultaneous presence of a foreign body (endodontic instrument or material) in periapical tissues and microorganisms in the root canal, are etiological factors in the formation or maintenance of a periapical lesion, and can lead to failure in endodontic treatment.
Ultrasonics in endodontics: a review of the literature
Journal of endodontics, 2007
During the past few decades endodontic treatment has benefited from the development of new techniques and equipment, which have improved outcome and predictability. Important attributes such as the operating microscope and ultrasonics (US) have found indispensable applications in a number of dental procedures in periodontology, to a much lesser extent in restorative dentistry, while being very prominently used in endodontics. US in endodontics has enhanced the quality of treatment and represents an important adjunct in the treatment of difficult cases. Since its introduction, US has become increasingly more useful in applications such as gaining access to canal openings, cleaning and shaping, obturation of root canals, removal of intracanal materials and obstructions, and endodontic surgery. This comprehensive review of the literature aims at presenting the numerous uses of US in clinical endodontics and emphasizes the broad applications in a modern-day endodontic practice.
Ultrasonics: a novel approach for retrieval of separated instruments
Journal of clinical and diagnostic research : JCDR, 2015
An instrument fracture within the root canal interferes and hinders the outcome of the successful root canal treatment. Fracture of endodontic instrument often results from incorrect use or overuse. This article reports a case of retrieval of separated endodontic instrument with help of ultrasonic and discusses the factors influencing the removal of fractured instrument.