Prognosis of Root Canal Treatment with Retained Instrument Fragment(s)

Parashos, Peter

doi:10.1007/978-3-319-60651-4_8

Cited by 7 publications

(6 citation statements)

References 70 publications

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“…The current root canal treatment method includes drilling an access hole into the crown of the tooth mechanically and then cleaning the canal space with chemical irrigants followed by refilling the canal space. − The technique demands high skill the lack of which may eventually lead to the failure of the endodontic procedure . In addition, the residual bacteria can flourish and may cause the spread of bacterial infection in the patient .…”

Section: Introductionmentioning

confidence: 99%

“…4−7 The technique demands high skill the lack of which may eventually lead to the failure of the endodontic procedure. 8 In addition, the residual bacteria can flourish and may cause the spread of bacterial infection in the patient. 9 It was reported that primary root canal infections are often polymicrobial, which includes 10−30 different bacterial species, whereas secondary infection is primarily due to the development of resistant species, Enterococcus faecalis, an anaerobic Gram-positive coccus, which forms biofilm with the capacity to invade dentinal tubules.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Total Eradication of Bacterial Infection in Root Canal Treatment: An Electrochemical Approach

Segu

Bijukumar

Trinh

et al. 2018

ACS Biomater. Sci. Eng.

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According to the American Association of Endodontists, currently 22.3 million endodontic procedures are being performed annually with the success rate of 70–95% and the average survival rate of the root canal procedure is approximately 67% after 5 years and 56% after 8 years. One of the major reason for the failure is relapse of infection. Hence, it is imperative to develop an assistive or alternative method to eradicate the bacterial infection effectively without affecting patient compliance. The application of electrochemistry has been used previously to disinfect catheters and implant disinfection. Hence, the aim of this study is to utilize the principles of electrochemistry to develop a microelectronic device to eradicate bacterial infection for root canal treatment. The electrochemical protocol includes open circuit potential (60 s) and potentiostatic scan at varying voltage (−9 to +2 V) at a different time duration (1–5 min). Enterococcus faecalis in the form of planktonic and biofilm was used in this study. After electrochemical treatment, the bacterial viability was evaluated using alamarBlue assay, colony forming units, confocal microscopy, and scanning electron microscopy. Cytotoxicity evoked by electrochemical voltage in comparison to NaOCl solution was performed using osteoblasts in 2D and 3D cell culture systems. The results of the study show that the application of −2 to +2 V at 1–5 min did not show any significant reduction in bacterial growth. However, the cathodic voltage of −9 V for 5 min showed a significant reduction (p < 0.001) in the bacterial count (80–95%). Similar results were obtained from biofilm study, which is more realistic to the in vivo condition. In contrast, the method did not induce cytotoxicity to the cells in 3D culture system (65% viability) in comparison to the highly toxic nature (0% viability) of NaOCl, indicating better patient compliance. Hence, the study provides supporting evidence to develop an electrochemically driven microelectronic device that can be a potential assistive dental instrument for endodontic procedures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Total Eradication of Bacterial Infection in Root Canal Treatment: An Electrochemical Approach

Segu

Bijukumar

Trinh

et al. 2018

ACS Biomater. Sci. Eng.

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“…MTA Fillapex has several advantages such as the stimulation of new tissue formation, rapid tissue repair without causing inflammatory reactions, high radio-opacity, provision of good visualization on the radiograph, release of calcium ions to induce rapid tissue regeneration in areas with periapical lesions and microbial activity, making insertion and handling easier, having adequate working time, and being easy to remove (on retreatment, especially if used with gutta-percha) [6, 7]. It can also be used for antimicrobial activity against M. luteus , S. aureus , E. coli , P. aeruginosa , C. albicans , and E. faecalis because of its alkaline pH [7, 8].…”

Section: Discussionmentioning

confidence: 99%

Broken File Retrieval in the Lower Right First Molar Using an Ultrasonic Instrument and Endodontic Micro Forceps

Meidyawati

Suprastiwi

Setiati

2019

Case Reports in Dentistry

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Broken files affect cleaning, shaping, and filling processes of the root canal, thereby causing maintenance failure. Objective. This report explains how to remove broken files using ultrasonic instruments and endodontic micro forceps. Case Report. A 25-year-old female patient had incomplete root canal treatment at the lower right first molar 1 week ago. There were radiolucency in the bifurcation and apical root and the presence of broken files in the 1/3 coronal mesiolingual root. The retrieval started by making a staging platform with an ET20 ultrasonic tip. Endodontic micro forceps were used including a screw wedge that works by clamping the file fragments through a mechanical lock and pulling them to the coronal. Conclusion. It is possible to successfully remove broken files from the root canal using ultrasonic instruments and endodontic micro forceps.

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“…However, like all endodontic instruments, Ni-Ti instruments can fracture [1][2][3]. The prevalence of retained fractured endodontic instruments is reported to be approximately 1.6% with a range of 0.7-7.4%; however, it should be noted that studies may not provide representative data since not all fractured instruments are documented [7][8][9][10]. To address this complication, numerous studies have introduced special instruments and techniques for retrieving obstructing objects, such as ultrasonic instruments [11], hollow tubes with a cyanoacrylate adhesive [11], trephining techniques using an ultrasonic tip or a trepan bur [12], endoextractors [13], and welding with a Neodymium: Yttrium-Aluminum-Perovskite (Nd: YAG) laser [14].…”

Section: Introductionmentioning

confidence: 99%

The Safety of Removing Fractured Nickel–Titanium Files in Root Canals Using a Nd: YAP Laser

Namour,

El Mobadder,

Matamba

et al. 2024

Biomedicines

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The fracture of nickel–titanium (Ni-Ti) instruments during root canal instrumentation leads to compromised outcomes in endodontic treatments. Despite the significant impact of instrument facture during a root canal treatment, there is still no universally accepted method to address this complication. Several previous studies have shown the ability of a Neodymium: Yttrium–Aluminum–Perovskite (Nd: YAP) laser to cut endodontic files. This study aims to determine safe irradiation conditions for a clinical procedure involving the use of a Neodymium: Yttrium–Aluminum–Perovskite (Nd: YAP) laser for removing fractured nickel–titanium files in root canals. A total of 54 extracted permanent human teeth (n = 54) were used. This study involved nine distinct groups, each employing different irradiation conditions. Groups 1 s, 3 s, 5 s, 10 s, and 15 s simply consist of irradiation for 1, 3, 5, 10, and 15 s, respectively. After identifying the longest and safest duration time, four additional groups were proposed (labeled A, B, C, and D). Group A was composed of three series of irradiations of 5 s each separated by a rest time of 30 s (L5s + 30 s RT). Group B consisted of three series of irradiations of 5 s each separated by a rest time of 60 s (L5s + 60 s RT). Group C consisted of two series of irradiations of 5 s each separated by a rest time of 30 s (L5s + 30 s RT), and group D consisted of two series of irradiations of 5 s each separated by a rest time of 5 s (L5s + 5 s RT). In all groups, during the rest time, continuous irrigation with 2.5 mL of sodium hypochlorite (3% NaOCl) was carried out. The variation in temperature during irradiation was registered with a thermocouple during irradiation with different protocols. The mean and standard deviation of the temperature increase was noted. The calculation of the temperature was made as the Δ of the highest recorded temperature at the root surface minus (-) that recorded at baseline (37°). Additionally, scanning electron microscopy (SEM) was used after irradiation in all groups in order to assess the morphological changes in the root dentinal walls. The Nd: YAP laser irradiation parameters were a power of 3W, an energy of 300 mJ per pulse, a fiber diameter of 200 µm, a pulsed mode of irradiation with a frequency of 10 Hz, a pulse duration of 150 𝜇s, and an energy density of 955.41 J/cm2. Our results show that the safest protocol for bypassing and/or removing broken instruments involves three series of irradiation of 5 s each with a rest time of 30 s between each series. Furthermore, our results suggest that continuous irradiation for 10 s or more may be harmful for periodontal tissue.

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Prognosis of Root Canal Treatment with Retained Instrument Fragment(s)

Cited by 7 publications

References 70 publications

Total Eradication of Bacterial Infection in Root Canal Treatment: An Electrochemical Approach

Total Eradication of Bacterial Infection in Root Canal Treatment: An Electrochemical Approach

Broken File Retrieval in the Lower Right First Molar Using an Ultrasonic Instrument and Endodontic Micro Forceps

The Safety of Removing Fractured Nickel–Titanium Files in Root Canals Using a Nd: YAP Laser

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