scholarly journals Root canal preparation with reciprocating instruments - A literature review and clinical application

2020 ◽  
Vol 75 (9) ◽  
pp. 493-504
Author(s):  
Christiaan Victor ◽  
Peet J Van der Vyver ◽  
Martin Vorster ◽  
Zunaid I Vally
Keyword(s):  
Root Canal ◽  
Three Dimensional ◽  
File Systems ◽  
Apical Part ◽  
Pulp Tissue ◽  
Root Canals ◽  
Periodontal Tissues ◽  
Endodontic Infection ◽  
Reciprocating Instruments ◽  
Canal Shaping

It is well described that the presence of microbial flora in the pulp space of the tooth, and the inability of the immune system to remove these pathogens, are the major sources of peri-apical and radicular inflam-mation.1 Eradication of these pathogens from the pulp and root canal space by means of cleaning, shaping, disinfecting and complete obturation is necessary to safeguard the health of the periodontal tissues from endodontic infection and subsequent breakdown.2,3 The basic objectives of cleaning and shaping of root canals include: (1) removal of all infected soft and hard tissues; (2) creating space for delivery of disinfectants and medicaments to the apical part of the canal; (3) facilitating three dimensional obturation and (4) preservation of radicular structures.4 Even modern endodontic file systems leave untouched areas on the root canal walls after preparation and show compaction of hard tissue debris.5 This debris consists of pulp tissue remnants, bacteria and dentine chips of which most is found in the apical part of the prepared root canal system.6 Aiming for a centred preparation that corresponds to the original canal anatomy accompanied by the lowest amount of canal transportation, especially in middle and apical parts of curved canals, will result in the most favourable post instrumented canal shape. The four optimal canal shaping objectives are: (1) to have a tapered funnel from orifice to apex, (2) maintenance of original anatomical canal pathway, (3) apical foramen position should remain constant and (4) leaving the apical opening as small as possible.2,7

scholarly journals Comparative assessment of manual, rotary and reciprocating instruments for removal of root fillings, using stereomicroscope: An in vitro study

2019 ◽  
Vol 45 (1) ◽  
pp. 54-61
Author(s):  
Afzal Ali ◽  
Sazid Hussain ◽  
Sandeep Metgud ◽  
Shashank Mishra ◽  
Ankita Sharma ◽  
...  
Keyword(s):  
Root Canal ◽  
File Systems ◽  
In Vitro Study ◽  
Filling Material ◽  
Root Canal Filling ◽  
Root Canals ◽  
Tukey Test ◽  
Gutta Percha ◽  
Reciprocating Instruments

Background: To investigate the efficiency of Hedstrom (H; Dentsply Maillefer) file, Protaper Universal Retreatment system (PTUR; Dentsply Maillefer), Mani NRT-GPR files (Mani, Japan) and WaveOne (WO; Dentsply Maillefer) Reciprocating files in removing Gutta Percha (GP) and sealer from root canals. Methods: Sixty canals with less than 10° curvature from extracted human maxillary incisors were used. Root canal reinstrumentation was performed with H, PTUR, Mani NRT-GPR and WO files. Amount of residual root filling material (Gutta-percha and or sealer) were measured by using stereomicroscope. Data of GP or sealer remnants were statistically analyzed using one-way analysis of variance and Tukey test. Results: There were no significant differences among 4 groups in terms of residual root filling material in the apical third (p > 0.05). H-file group showed highest amount of root residual root filling as compared to groups. Conclusions: Reciprocating file system proved to be more efficient in removing the root canal fillings material than other retreatment file systems. H file group showed highest amount of root canal filling material. Bangladesh Med Res Counc Bull 2019; 45: 54-61

scholarly journals Scope of Preparation of Oval and Long-Oval Root Canals: A Review of the Literature

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Christianne Velozo ◽  
Victor Felipe Farias Prado ◽  
Ismael Sebastião da Silva Sousa ◽  
Maria Beatriz Arruda Albuquerque ◽  
Luiza Montenegro ◽  
...  
Keyword(s):  
Literature Review ◽  
Root Canal ◽  
Three Dimensional ◽  
Endodontic Treatment ◽  
Micro Ct ◽  
Review Of The Literature ◽  
Root Canals ◽  
Reciprocating Instruments ◽  
Ct Studies

Successful endodontic treatment depends on cleaning and disinfecting the root canals, in order to provide conditions for three-dimensional filling, which should prevent root canal reinfection. However, anatomical complexities pose a challenge during endodontic treatment. The present study was a literature review carried out in the following databases: PubMed, SciELO, and MEDLINE, which were searched for articles published from 2017 to 2021. Micro-CT studies published in English, which analysed the capacity for preparation of oval and long-oval root canals, were included. The following keywords were used: “oval-shaped canals,” “long-oval-shaped canals,” “endodontics,” and “micro-CT.” The aim of this study was to carry out a literature review of micro-CT studies on the scope of the capacity for preparation performed in oval and long-oval root canals with rotary and reciprocating instruments.

scholarly journals Three-dimensional Analysis of the Root Canal Preparation with Reciproc Blue, WaveOne Gold and XP EndoShaper. A New Method in vivo

2020 ◽  
Author(s):  
Javier Caviedes-Bucheli ◽  
Nestor Rios-Osorio ◽  
Diana Usme ◽  
Cristian Jimenez ◽  
Adriana Pinzon ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Root Canal ◽  
Three Dimensional ◽  
File Systems ◽  
Root Canal Preparation ◽  
Paired Data ◽  
Root Canals ◽  
Single File ◽  
Before And After

Abstract Background: Evaluation of changes in volume after root canal preparation. with single file rotary systems such as Reciproc-Blue, WaveOne-Gold and XP-EndoShaper, with a new in vivo study model using CBCT and 3D reconstructions on patients Methods: Thirty human lower premolars were randomly divided into three groups, in which the root canals were prepared using one of these single-file systems: Reciproc-Blue, WaveOne-Gold and XP-EndoShaper. Root canals were scanned before and after root canal preparation using CBCT, and a 3D reconstruction was performed with RHINOCEROS 5.0 software to assess the increase in canal volume for each group after instrumentation. The Anova test was used to determine statistically significant differences between the groups and Post-hoc Tukey's-test to compare the groups with each other. Results: The proposed 3D-reconstruction model allows to measure the variation of the volume within the root canal of the premolars studied. With this model, Reciproc-Blue showed higher increase in canal volume, followed by WaveOne-Gold and XP-EndoShaper (Anova p = 0.003). XP-EndoShaper did not show a statistically significant increase in canal volume after root canal preparation (Tukey's test for paired data p = 0.06 confirmed the results with each other).Conclusion: it is possible to use CBCT and 3D reconstruction as a model to study the preparation quality of the root canal in vivo. With this model, Reciproc-Blue showed higher increase in root canal volume, followed by WaveOne-Gold, while XP-EndoShaper did not significantly increase root canal volume during preparation.

Flute and Shank Dimensions of Reciprocating Instruments before and after Simulated Root Canal shaping

2017 ◽  
Vol 18 (3) ◽  
pp. 198-204
Author(s):  
Carlos Estrela ◽  
Felipe C Sampaio ◽  
Ana PP Brito ◽  
Heloisa HP Veloso ◽  
Ana HG de Alencar ◽  
...  
Keyword(s):  
Root Canal ◽  
Cross Sectional ◽  
Plastic Deformations ◽  
Dimensional Changes ◽  
Root Canals ◽  
Paired Samples ◽  
Before And After ◽  
Reciprocating Instruments ◽  
Canal Shaping ◽  
Student’S T

ABSTRACT Aim This study analyzed the effect of the dimensions of the flute and shank in the first 4 mm of instrument tips on the deformation and dimensional changes of reciprocating instruments after root canal shaping (RCS). Materials and methods The reciprocating instruments used were Reciproc® R25, R40, and R50; WaveOne® Small, Primary, and Large; and Unicone® #20, #25, and #40. Scanning electron microscopy images of the first 4 mm of the tip were acquired at 30× magnification before and after simulated curved root canals were shaped. Each instrument was used only once. The images were transferred to the AxioVision® software to measure the flute area (µm2, shank area (µm2), flute length (µm), and crosssectional diameter (µm). Student's t test for paired samples was used to compare differences before and after RCS, and analysis of variance followed by the Tukey test, to compare differences between instruments of similar sizes. The instruments were classified according to deformations after RCS. Results Reciproc® instruments had larger flutes and smaller shanks. The Reciproc® R40 had significant differences in crosssectional diameter at 0.5 mm from the tip. Reciproc® had no plastic deformations. Unicone® #20 instruments had significant differences in cross-sectional diameter at 1.5 and 3.0 mm from the tip, and #25 instruments had differences at 1.5 and 3.0 mm and in length of the second and third flutes. One #20 and three #40 instruments had plastic deformations. The differences in length of the first and fourth flutes of WaveOne® Primary and in cross-sectional diameter at 2.0 mm from the tip of WaveOne® Large were significant. Two of three WaveOne® Large instruments had plastic deformations. Conclusion Reciproc® instruments had greater flute areas and lengths and smaller shanks than Unicone® and WaveOne® instruments of similar sizes. Reciproc® instruments had a greater flute-to-shank ratio. WaveOne® instruments had the lowest flute-to-shank ratio. Unicone® instruments had the most plastic deformations. Instruments with larger flutes and smaller shanks had fewer plastic deformations after curved RCS. Clinical significance The knowledge of mechanical behavior before choosing the endodontic instrument may avoid fracture, regardless of the clinical condition, and it is essential to the success of root canal treatment. How to cite this article Sampaio FC, Brito APP, Veloso HHP, Alencar AHG, Decurcio DA, Figueiredo JAP, Estrela C. Flute and Shank Dimensions of Reciprocating Instruments before and after Simulated Root Canal shaping. J Contemp Dent Pract 2017;18(3):198-204.

scholarly journals Shaping Ability of XP Endo Shaper File in Curved Root Canal Models

2020 ◽  
Vol 2020 ◽  
pp. 1-6 ◽  
Author(s):  
Abdulmohsen Alfadley ◽  
Abdalrhman Alrajhi ◽  
Hamad Alissa ◽  
Faisal Alzeghaibi ◽  
Lubna Hamadah ◽  
...  
Keyword(s):  
Body Temperature ◽  
File Systems ◽  
Lower Number ◽  
Significance Level ◽  
Root Canals ◽  
Shaping Time ◽  
Significant Difference ◽  
Before And After ◽  
Canal Shaping ◽  
Shaping Ability

The aim of this study was to assess the shaping ability of the XP Shaper (XPS) file in severely curved canal models under simulated body temperature and compare it with that of the WaveOne Gold (WOG) file. Ninety-six simulated root canals were equally distributed into XPS and WOG systems to be shaped by eight files each. Files were assessed under a stereomicroscope prior to canal shaping to detect deformation if any. The canals were shaped at 35 ± 1°C using the X-Smart Plus motor. Images of the canals were obtained before and after instrumentation using a stereomicroscope to measure the amount of removed resin from both the inner and outer curvature sides at apex (0 mm) and 3 mm and 6 mm from the apex. The shaping time was calculated. The data were statistically analyzed by the independent t-test at 5% significance level. The XPS and WOG systems shaped the canals in 37.0 ± 9.5 and 62.6 ± 11.3 seconds (P<0.05), respectively. At the apex level, the amount of resin removal in both sides did not show a significant difference between the tested groups (P>0.05). At 3 mm and 6 mm levels, the WOG removed more resin than XPS at both sides (P<0.05). In XPS, deformation was observed in four files: one file after the first use, one file after the fourth use, and two files after the sixth use. In WOG, two files were deformed: one file after the fifth use and one file after the sixth use. One XPS file was fractured after the sixth use. In short, XPS and WOG files can be used in shaping severely curved canals as they showed the ability to maintain the original shape with minimal transportation. Both file systems showed signs of deformation after use with a lower number of deformed files observed in WOG throughout the experiment.

scholarly journals A preliminary study of the antibacterial potential of cetylpyridinium chloride in root canals infected by E. faecalis

2012 ◽  
Vol 23 (6) ◽  
pp. 645-653 ◽  
Author(s):  
Carlos Estrela ◽  
Manoel Damião Sousa-Neto ◽  
Denise Ramos Silveira Alves ◽  
Ana Helena Gonçalves Alencar ◽  
Tatiane Oliveira Santos ◽  
...  
Keyword(s):  
Root Canal ◽  
Cetylpyridinium Chloride ◽  
Positive Pressure ◽  
Root Canals ◽  
Agar Diffusion ◽  
Endodontic Infection ◽  
Anterior Teeth ◽  
Agar Diffusion Test ◽  
Preliminary Study ◽  
Antibacterial Potential

The aim of this preliminary study was to verify the antibacterial potential of cetylpyridinium chloride (CPC) in root canals infected by Enterococcus faecalis. Forty human maxillary anterior teeth were prepared and inoculated with E. faecalis for 60 days. The teeth were randomly assigned to the following groups: 1: Root canal preparation (RCP) + 0.1% CPC with positive-pressure irrigation (PPI, Conventional, NaviTip®); 2: RCP + 0.2% CPC PPI; 3: RCP + 2.5% NaOCl PPI; 4: RCP + 2.5% NaOCl with negative-pressure irrigation system (NPI, EndoVac®); 5: Positive control; and 6: Negative control. Four teeth of each experimental group were evaluated by culture and 4 by scanning electron microscopy (SEM). In all teeth, the root canals were dried and filled with 17% EDTA (pH 7.2) for 3 min for smear layer removal. Samples from the infected root canals were collected and immersed in 7 mL of Letheen Broth (LB), followed by incubation at 37°C for 48 h. Bacterial growth was analyzed by turbidity of culture medium and then observed with a UV spectrophotometer. The irrigating solutions were further evaluated for antimicrobial effect by an agar diffusion test.The statistical data were treated by means, standard deviation, Kruskal-Wallis test and analysis of variance. Significance level was set at 5%. The results showed the presence of E. faecalis after root canal sanitization. The number of bacteria decreased after the use of CPC. In the agar diffusion test, CPC induced large microbial inhibition zones, similar to 2% chlorhexidine and large than 2.5% NaOCl. In conclusion, cetylpyridinium chloride showed antibacterial potential in endodontic infection with E. faecalis.

Shaping Ability of ProTaper Next, WaveOne, and Reciproc in Simulated Root Canals

2016 ◽  
Vol 17 (11) ◽  
pp. 902-906
Author(s):  
Mateus R Tonetto ◽  
EM Maia Filho ◽  
RM dos Reis Santos ◽  
Darlon M Lima ◽  
SM da Silva Pereira ◽  
...  
Keyword(s):  
Clinical Significance ◽  
Root Canal ◽  
Negative Impact ◽  
Endodontic Treatment ◽  
Root Canals ◽  
Before And After ◽  
Reciprocating Instruments ◽  
Shaping Ability ◽  
Curved Root Canals

ABSTRACT Introduction The study aimed to compare the shaping and preservation of the original curvature of simulated curved root canals using the following instruments: Reciproc (Rcp), WaveOne (Wo), and the ProTaper Next system (Ptn). Materials and methods A total of 45 resin blocks with simulated curved root canals were divided into three groups (n = 15), prepared using the Rcp (R25), Wo (25/0.8), and Ptn (X2) instruments. Standardized photographs were taken before and after canal instrumentation. After the superimposition of the images, the amount of resin removed from the curvature's inner and outer walls was measured at six apical levels, at intervals of 1 mm. The canals’ angles of curvature before and after instrumentation were subtracted. Results There were no significant differences between the instruments in terms of the total amount of resin removed of the inner or outer walls of the apical curvature (p > 0.05). The Rcp instruments provided the best resin removed ratios between the walls. The means of the change in angle were as follows: Wo = 2.15°, Ptn = 0.92°, and Rcp = 0.21°. WaveOne caused significantly higher deviations than Rcp. Conclusion All of the instruments demonstrated a tendency to straighten the simulated root canal. Instruments that use rotary movement achieved an effect similar to that of the reciprocating instruments in relation to change in angle. Clinical significance Deviations from the original shape of the root canal could have a negative impact on the quality of a filling and consequently on the success of the endodontic treatment. How to cite this article Maia Filho EM, dos Reis Santos RM, Lima DM, da Silva Pereira SM, Soares JA, de Jesus Tavarez RR, Ferreira MC, Carvalho CN, Bandeca MC, Tonetto MR, Borges AH, de Castro Rizzi C. Shaping Ability of ProTaper Next, WaveOne, and Reciproc in Simulated Root Canals. J Contemp Dent Pract 2016;17(11):902-906.

Management of an Anterior Tooth with External and Internal Resorption

2017 ◽  
Vol 2 (1) ◽  
pp. 32-35
Author(s):  
Aadit Anilkumar ◽  
Faisal Nazar ◽  
Ratheesh Rajendran
Keyword(s):  
Root Canal ◽  
Inflammatory Process ◽  
External Surface ◽  
Three Dimensional ◽  
Anterior Tooth ◽  
Pulp Tissue ◽  
Gutta Percha ◽  
Tooth Resorption ◽  
Root Canal Morphology ◽  
Canal Morphology

ABSTRACT Tooth resorption is a condition associated with either a physiologic or a pathologic process resulting in a loss of dentin, cementum, and/or bone. Inflammatory process is initiated when the predentin or precemental layer of the tooth is damaged. Resorption can either be external or internal in form. In order to control the tooth resorption, it is necessary to treat the root canal by removing all the pulp tissue. Due to varied root canal morphology, root canal treatment poses a challenge for the clinician. In such cases a combination of conventional lateral compaction and thermoplasticized gutta percha can enable the three-dimensional obturation of the canal space. This case report describes a nonsurgical mode of management of a tooth having internal and external (surface) resorption. How to cite this article Anilkumar A, Nair KR, Nazar F, Rajendran R. Management of an Anterior Tooth with External and Internal Resorption. Cons Dent Endod J 2017;2(1):32-35.

scholarly journals Efficiency of the Self Adjusting File, WaveOne, Reciproc, ProTaper and hand files in root canal debridement

2014 ◽  
Vol 08 (03) ◽  
pp. 326-329 ◽  
Author(s):  
K. Meltem Topcu ◽  
Ertugrul Karatas ◽  
Damla Ozsu ◽  
Ibrahim Ersoy
Keyword(s):  
Contrast Medium ◽  
Root Canal ◽  
File Systems ◽  
The Self ◽  
Root Canals ◽  
Single File ◽  
Canal Systems ◽  
Better Than

ABSTRACT Objectives: The aim of this study was to compare the canal debridement capabilities of three single file systems, ProTaper, and K-files in oval-shaped canals. Materials and Methods: Seventy-five extracted human mandibular central incisors with oval-shaped root canals were selected. A radiopaque contrast medium (Metapex; Meta Biomed Co. Ltd., Chungcheongbuk-do, Korea) was introduced into the canal systems and the self-adjusting file (SAF), WaveOne, Reciproc, ProTaper, and K-files were used for the instrumentation of the canals. The percentage of removed contrast medium was calculated using pre- and post-operative radiographs. Results: An overall comparison between the groups revealed that the hand file (HF) and SAF groups presented the lowest percentage of removed contrast medium, whereas the WaveOne group showed the highest percentage (P < 0.001). The ProTaper group removed more contrast medium than the SAF and HF groups (P < 0.05). Conclusions: None of the instruments was able to remove the contrast medium completely. WaveOne performed significantly better than other groups.

scholarly journals EFFECTIVENESS OF TIME IRRADIATION BY LASER DIODE 650 NM AND PHOTOSENSITIZER Methylene Blue ON DECREASING THE NUMBER OF MIXED BACTERIAL COLONIES FROM NECROTIC ROOT CANAL

2019 ◽  
Vol 9 (1) ◽  
pp. 33
Author(s):  
Nadya Ayusandra Larasati ◽  
Kun Ismiyatin ◽  
Sri Kunarti
Keyword(s):  
Methylene Blue ◽  
Laser Radiation ◽  
Laser Diode ◽  
Root Canal ◽  
P Value ◽  
Pulp Tissue ◽  
Root Canals ◽  
Significant Difference ◽  
Conservative Dentistry ◽  
Effective Radiation

Background. Pulp necrosis is defined as the irreversible death of pulp tissue. It clinically observed by the destruction of its own tissue. The primary etiology of pulp necrosis is irritation due to bacterial infection. The treatment for pulp necrosis is root canal treatment with a success percentage ranging from 40-93% based on cavities with minimal bacteria that can be sterilized. One method of sterilization using Antibacterial Photodynamic Therapy (aPDT), which uses laser diodes is currently being developed in the field of conservative dentistry, but there are still many differences of opinion regarding the ideal amount of time of laser radiation or photoactivation used to reduce the number of bacteria, especially in root canals. Aim. To determine the effective radiation time of the 650 nm wavelength laser diode with Methylene Blue Photosensitizer in reducing the number of bacterial colonies from necrotic root canals. Method. This research is a laboratory experimental study with 30 samples and 6 groups with different durations of irradiation namely 45, 60, 75 and 90 seconds. Results. It was found that there was a decrease in the number of mixed bacterial colonies within necrotic root canals with the obtained p-value of the ANOVA test results being <0.05. This shows that there is a significant difference between the amounts of mixed bacterial colonies from necrotic root canals in each treatment group. Conclusion. Diode laser radiation with a wavelength of 650 nm with duration of 90 seconds of radiation and Methylene Blue Photosensitizer is an effective time in reducing the number of bacterial colonies from necrotic teeth compared to the duration of radiation of 45, 60 and 75 seconds.

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