Current technology in endodontic instrumentation: advances in metallurgy and manufacture

Campbell, Faith; Cunliffe, Joanne; Darcey, James

doi:10.1038/s41415-021-3170-1

Cited by 7 publications

(6 citation statements)

References 55 publications

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“…Also, there are many advances in the field of endodontics that have been developed towards improvement in diagnosis such as cone beam computed tomography (CBCT),[ 42 ] equipment/instrument, techniques,[ 43 ] and materials. [ 44 ] These advances have resulted in an overall increase in the success rate of the treatment.…”

Section: Discussionmentioning

confidence: 99%

Factors associated with patients’ rejection of root canal treatment in a tertiary hospital, Southwest Nigeria: A pilot survey

Gbadebo¹,

Adebayo²

2023

J West Afr Coll Surg

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Objective: Root canal treatment (RCT) is a major procedure in dentistry. It aims to relieve the pain of pulpal origin and maintain the affected tooth as a functional unit on the arch. Despite these achievable goals, RCT is sometimes rejected by patients. This study, therefore, sought to assess the reasons for rejection in patients planned for endodontic/RCT. Materials and Methods: This was a cross-sectional pilot survey of patients planned for RCT using a self-administered questionnaire. The questionnaire included sociodemographics, the Index for Dental Anxiety and Fear (IDAF-4C), and questions to assess the reasons for rejection of endodontic treatment. Data collected were analysed with IBM Statistical Package for the Social Sciences software program, version 23.0. Descriptive statistics were used; chi-square was used to test the association between categorical variables. Statistical significance was set at P ≤ 0.05. Result: Thirty-one patients between the age range of 16 and 81 years, with a mean age of 38.16 ± 17.87, participated in the survey. Only nine (29.03%) of the participants declined to have the treatment. The majority 6(66.7%), and 7(77.8%) of those that refused the treatment did so, due to fear of drilling ( P = 0.014) and cost of treatment ( P = 0.001), respectively. Mean IDAF-4C was 1.86 ± 0.9 (standard deviation). The rejection was, however, not affected by past experience, the risk of taking multiple radiographs, and the number of hours or visits for the procedure. Conclusion: The cost of treatment and fear of drilling were the major reasons for the rejection of RCT in this study. Therefore, there is a need to further look into making endodontic treatment a more comfortable, less costly, and less fear-provoking procedure for patients.

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Section: Discussionmentioning

confidence: 99%

Factors associated with patients’ rejection of root canal treatment in a tertiary hospital, Southwest Nigeria: A pilot survey

Gbadebo¹,

Adebayo²

2023

J West Afr Coll Surg

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“…Also, there was no canal aberration in all the 250 samples. The mean values and standard deviation of the five systems are presented in Table (1). The following data represents the descriptive data schedules.…”

Section: Descriptive Statisticsmentioning

confidence: 99%

“…Selecting the best design should facilitate the work and improve the cleaning and shaping of each canal. 1 Many factors have been identified that exert an effect on the shaping ability of the files, such as the design features or characteristics of the instruments that had been used for canal preparation (Cutting angle, Tip design, Pitch, Radial Land, Rake Angle, Helical Angle, Core Diameter, Taper, Chip Space, Configuration of the cutting edges of the instruments). 2 Many innovations have been made during the last years to enhance the performance of endodontic rotary instruments with respect to their shaping ability, and modification of the cross-sectional design was an important issue 3,4 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Cross-Sectional Designs of Different Ni-Ti Files on Shaping Ability After Repeated Usage in Simulated Root Canals.

Qaddori,

Salman

2024

EDJ

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Background and Objective: The study aimed was to compare the effect of cross-sectional designs of five rotary systems (One Curve, 2Shape, K3-i File, E3 Azure, Neolix), on the shaping ability of the files in simulated resin blocks under controlled conditions with five repeated use. The shaping ability of the files includes the following variables: (1) Longitudinal sectional area difference, (2) Canal wall surface area difference, (3) Canal volume difference, (4) SMI (structure material index) difference, (5) Cross-sectional area difference. Methods: Five rotary file systems: (1) One Curve, (2) 2Shape, (3) K3-i File, (4) E3 Azure, (5) Neolix, were tested in simulated J-shaped root canal resin blocks with a 45˚ angle of curvature. 10 files from each system, each one of the 10 files were used to prepare 5 resin blocks, named R1-R2-R3-R4-R5. All the used files from the 5 systems had tip size 25 diameter, and taper (6%), and length (25 mm). The first 4 rotary systems were used with a fixed speed (350 rpm), and fixed torque (3 Ncm), except for the fifth system which was used with a speed of (500 rpm), and torque (4 Ncm), Following the manufactural recommendation of each system. All the 250 resin blocks were prepared for Glide Path with manual reamers size 10, and 15, with a fixed working length 16 mm, then all the 250 samples were prepared with a Proglider rotary file from Dentsply (size 16 taper 3%), then finally were prepared with Edge Files (USA), with size 20 and taper 6%, reaching to the step of master preparation with the selected files of the 5 systems. Using a customized device for preparation to ensure fixed vertical force and to exclude any lateral force, preparation was done with EDTA solution as irrigation, with a fixed no. of 4 strokes for the first 5 systems and 9 strokes for the Neolix, the time was controlled by using a Metronome, each stroke duration was 6 seconds. Results: In the first, second, third, and fourth variables a statistically non-significant difference (P > 0.05) was found between One curve and 2Shape, a statistically significant difference (P < 0.05) was found between One Curve, K3-i File, E3 Azure, and Neolix. About the fifth variable which is the Cross-sectional area difference: the study compared the difference between the cross-section area of the canal at the point D8, comparing the cross-section area before and after preparation using ANOVA test and Post hoc test, a statistically significant difference (P < 0.05) was found between the Neolix and (2shape, K3 i-File, and E3 Azure). Conclusion: The cross-sectional design of the endodontic rotary instrument had an obvious effect on the shaping ability of the system. Keywords: Cross-sectional design, Shaping ability, Nickle Titanium rotary files (One Curve, 2Shape, K3-i File, E3 Azure, Neolix).

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“…To improve flexibility and cyclic fatigue resistance, the manufacturers have sought innovation in metallurgy, instrument design, and movement strategies such as various thermo-mechanical treatments, different cross-sectional designs, and new manufacturing processes, leading to a great variety of these endodontic instruments. Among them, the single-file system has been widely used because it greatly enhanced the efficiency of clinical work, thus relieving the patient’s pain and the work intensity of dentists [ 11 , 12 ]. Therefore, it is necessary to evaluate the preparation outcome of these various types of single-file systems in curved canals to provide guidance for the dentists.…”

Section: Introductionmentioning

confidence: 99%

Comparison of five single-file systems in the preparation of severely curved root canals: an ex vivo study

et al. 2022

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Background The ex vivo study is to compare the root canal preparation outcomes achieved by five nickel–titanium single-file instrumentation systems (M3-L, Reciproc Blue, V-Taper 2H, WaveOne Gold, XP-endo Shaper) in severely curved molar root canals. Methods A total of 60 root canals were selected from extracted human molar teeth with curvatures ranging from 25° to 50° and divided into five groups based on the instrumentation system employed (n = 12). Before and after root canal preparation, a Micro-CT scan was taken, and pre- and post-operative data were analyzed to evaluate the following parameters: volume increment of root canals (VI), untouched root canal areas (UTA), and canal transportation (CT). Apically extruded debris (AD) was collected during preparation. After that, all samples were separated into two parts and examined respectively by scanning electron microscope (SEM) to assess cleaning ability. Data were statistically analyzed with ANOVA (UTA, AD, VI) or Kruskal–Wallis test (CT, SEM-score), the level of significance was set at α = 0.05. Results There were no significant differences between the five systems regarding the AD, VI, and UTA parameters (P > 0.05). In terms of CT, no significant difference was noted at the straight section of canal and apical levels, while XP-endo Shaper showed less canal transportation than M3-L at the level of curved vertex (P < 0.05), and the centering ability of V-Taper 2H was significantly better than WaveOne Gold at the initial point of bending (P < 0.05). Debris and smear layers were present on the canal walls of all specimens, the apical thirds of the canal presented higher SEM scores than the coronal thirds in all groups (P < 0.05). Reciproc Blue and XP-endo Shaper showed fewer smear scores than WaveOne Gold in the apical thirds (P < 0.01 and P < 0.05, respectively), and no statistical difference was found between other groups in the middle and coronal thirds. Conclusion The five single-file systems evaluated performed equally in apically debris extrusion, dentin removal, and untouched root canal areas, while XP-endo Shaper and V-Taper 2H resulted in less canal transportation compared to M3-L and WaveOne Gold. Regarding cleaning ability, Reciproc Blue and XP-endo Shaper were associated with less smear layer than WaveOne Gold in the apical thirds.

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Current technology in endodontic instrumentation: advances in metallurgy and manufacture

Cited by 7 publications

References 55 publications

Factors associated with patients’ rejection of root canal treatment in a tertiary hospital, Southwest Nigeria: A pilot survey

Factors associated with patients’ rejection of root canal treatment in a tertiary hospital, Southwest Nigeria: A pilot survey

Effect of Cross-Sectional Designs of Different Ni-Ti Files on Shaping Ability After Repeated Usage in Simulated Root Canals.

Comparison of five single-file systems in the preparation of severely curved root canals: an ex vivo study

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