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.

scholarly journals Shaping Ability of Reciproc, UnicOne, and Protaper Universal in Simulated Root Canals

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Etevaldo Matos Maia Filho ◽  
Cláudia de Castro Rizzi ◽  
Matheus Bandeca Coelho ◽  
Sara Freitas Santos ◽  
Luzia Mayanne Oliveira Costa ◽  
...  
Keyword(s):  
Czech Republic ◽  
Root Canal ◽  
Root Canals ◽  
Significant Difference ◽  
Before And After ◽  
Reciprocating Instruments ◽  
Shaping Ability ◽  
Reciprocating Movement ◽  
Curved Root Canals

The study aimed to compare the shaping effects, preservation of the original curvature, and transportation of the apical foramen of Reciproc (VDW, Munich, Germany), UnicOne (Medin, Nové Město na Moravě, Czech Republic), and Protaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) in simulated root canals. Thirty resin blocks with simulated curved root canals were distributed into three groups(n=10),and prepared using Reciproc (RCp), UnicOne (UnO) and the Protaper Universal (PTu). Standardized photographs were taken before and after the instrumentation, after which they were superimposed. Measurements were taken of the quantity of resin removed from the inner and outer walls of the curvature at 6 levels, the curvature angles before and after instrumentation, and the transportation of the apical foramen. RCp obtained the highest values for amount of resin removed from the inner wall while UnO demonstrated similar shaping on both the inner and outer walls. PTu produced the greatest transportation of foramen when compared to the reciprocating instruments. There was no significant difference between the groups in terms of the change in angle(P>0.05). All the instruments were capable of maintaining the original curvature of the root canal; however, the UnO, which used reciprocating movement, produced more conservative shapes with lower foramen transportation.

Аpplying of high-frequency monopolar diathermocoagulation in the treatment of chronic pulpitis

2020 ◽  
Vol 1 (12) ◽  
pp. 40-42
Author(s):  
F. Yu. Daurova ◽  
D. I. Tomaeva ◽  
S. V. Podkopaeva ◽  
Yu. A. Taptun
Keyword(s):  
Root Canal ◽  
High Frequency ◽  
Antibacterial Effect ◽  
Comparison Group ◽  
Poor Quality ◽  
Endodontic Treatment ◽  
Root Canals ◽  
The Third ◽  
Before And After

Relevance: the reason for the development of complications in endodontic treatment is poor-quality instrumental treatment root canals.Aims: a study of the animicrobial action and clinical efficacy of high-frequency monopolar diathermocoagulation in the treatment of chronic forms of pulpitis.Materials and methods: 102 patients with various chronic forms of pulpitis were divided into three groups of 34 patients each. In the first two groups, high-frequency monopolar diathermocoagulation was used in endodontic treatment in different modes. In the third group, endodontic treatment was carried out without the use of diathermocoagulation (comparison group). The root canal microflora in chronic pulpitis in vivo was studied twice-before and after diathermocoagulation.Results: it was established that high-frequency monopolar diathermocoagulation in the effect mode is 3, power is 4 (4.1 W) and effect is 4, power is 4 (5.4 W) with an exposure time of 3 seconds, it has a pronounced antibacterial effect on all presented pathogenic microflora obtained from the root canals of the teeth.

scholarly journals Comparative evaluation of shaping ability of trunatomy and protaper gold files in curved canals using cone?beam computed tomography: An invitro study

2021 ◽  
Vol 6 (2) ◽  
pp. 101-105
Author(s):  
Kadam Krutika Kiran ◽  
Vagarali Hemant ◽  
Pujar Madhu A ◽  
Tamase Aishwarya S ◽  
Sahana Umesh
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
Human Teeth ◽  
Root Canals ◽  
Before And After ◽  
Canal Transportation ◽  
Group 2 ◽  
Shaping Ability

This study aimed to compare the canal transportation and canal centering ability in the preparation of curved root canals after instrumentation with TruNatomy (TN) (TN; Dentsply Sirona, Maillefer, Ballaigues, Switzerland) and ProTaper Gold (PG) (PG; Dentsply, Tulsa Dental Specialties, Tulsa, OK, USA) files using cone‑beam computed tomography (CBCT). 30 Single rooted extracted human teeth with root curvature ranging from 20-30° according to Schneider’s method were selected. Teeth with any visible cracks or fractures, calcifications, previous root canal treatments were excluded. The teeth were randomly assigned into two groups i.e. Group 1-TN and Group 2-PG (n = 15 each). The teeth were instrumented according to manufacturer’s guidelines for both the groups. Canals were scanned using a CBCT scanner before and after preparation to evaluate the transportation and centering ratio at 3 mm, 5 mm, and 7 mm from the apex. The data analysis was done using SPSS software and the test used was independent sample t test for comparison between the 2 groups.Data obtained suggested that TN group presented lesser canal transportation at the middle third of the root. The PG group showed better centering abitily at apical third of the root canal when both the groups were compared. TN resulted in less transportation than PG at the middle third, and PG showed better centering ability at the apical third. Overall, both systems safely prepared root canals, causing minimal errors.

scholarly journals Incidence and quality of root canal fillings in undergraduate dental students

2019 ◽  
Vol 67 ◽  
Author(s):  
Beethoven Estevão COSTA ◽  
Giovanna Morais de LIMA ◽  
Stéphanie Quadros TONELLI ◽  
Eduardo NUNES ◽  
Frank Ferreira SILVEIRA
Keyword(s):  
Root Canal ◽  
Dental Students ◽  
Endodontic Treatment ◽  
High Quality ◽  
Root Canal Filling ◽  
Periapical Lesions ◽  
Root Canals ◽  
Low Prevalence

ABSTRACT Objective: The purpose of this study was to evaluate the incidence of endodontic treatment and the quality of root canal fillings in Brazilian undergraduate dental students. The study was similar those conducted 10, 20, 30, and 40 years earlier. Methods: A total of 407 undergraduate dental students were evaluated by using questionnaires to identify endodontic treatments, with each treatment being radiographed for the analysis of the presence of a periapical radiolucency and the quality of the root canal filling. Results: Forty root canal fillings were found: 32 (80%) completely filled, seven (17.5%) incompletely filled, and one (2.5%) overfilled. Conclusion: This study showed a low prevalence of endodontic treatment in dentistry students, and the evaluated root canals that were filled were high quality, with few cases suggesting periapical lesions.

scholarly journals A microcomputed tomography evaluation of the shaping ability of three thermally-treated nickel-titanium rotary file systems in curved canals

2018 ◽  
Vol 47 (1) ◽  
pp. 325-334 ◽  
Author(s):  
Zhuwei Huang ◽  
Jingjing Quan ◽  
Jia Liu ◽  
Wen Zhang ◽  
Xiaolei Zhang ◽  
...  
Keyword(s):  
Root Canal ◽  
File Systems ◽  
Microcomputed Tomography ◽  
Nickel Titanium ◽  
Root Canal Preparation ◽  
Root Canals ◽  
Before And After ◽  
Shaping Ability ◽  
Thermally Treated

Objective To evaluate the shaping ability of three thermally-treated rotary nickel-titanium (NiTi) systems including ProTaper Next (PTN), HyFlex™ CM (HFCM) and HyFlex™ EDM (HFEDM) during root canal preparation in simulated root canals. Methods A total of 45 simulated root canals were divided into three groups ( n = 15) and prepared with PTN, HFCM or HFEDM files up to size 25. Microcomputed tomography (microCT) was used to scan the specimens before and after instrumentation. Volume and diameter changes, transportations and centring ratios at 11 levels of the simulated root canals were measured and compared. Results HFEDM caused significantly greater volume increases than HFCM and PTN in the entire root canal and in the apical and middle thirds. HFCM removed the least amount of resin in the coronal third compared with HFEDM and PTN. Overall, HFCM caused significantly less transportation in the apical 2 mm and was better centred than PTN in the apical 3 mm. Conclusion Under the conditions of this study, all systems prepared curved canals without significant shaping errors and instrument fracture. PTN and HFCM cut less resin than HFEDM. HFCM stayed centred apically and cut the least material coronally.

Efficiency of Different Nickel-Titanium Endodontic File Systems in Cleaning and Apical Transportation of Simulated Curved Root Canals

2017 ◽  
Vol 68 (5) ◽  
pp. 957-961
Author(s):  
Andrea Csinszka Kovacs Ivacson ◽  
Mariana Pacurar ◽  
Monica Monea ◽  
Monika Kovacs ◽  
Mihai Pop ◽  
...  
Keyword(s):  
Root Canal ◽  
File Systems ◽  
Nickel Titanium ◽  
Endodontic Treatment ◽  
Root Canal Treatment ◽  
Cleaning Efficiency ◽  
Root Canals ◽  
Apical Transportation ◽  
Curved Root Canals ◽  
Reference Areas

The use of nickel-titanium instruments have become an important part of the root canal treatment, in order to facilitate the cleaning and shaping of root canals, because the incorrect utilization of the endodontic files during endodontic treatment may produce unwanted procedural errors. The aim of this study was to evaluate on simulated curved root canal models the cleaning efficiency and the apical transportation in three reference areas of the root canal files, ProTaper (Dentsply Maillefer), K3XF (Sybron Endo) and HyFlex (Coltene Endo) systems, compared to the hand K-files (DentsplyMaillefer). According to our results, rotary file systems are more efficient than the hand files, in cleaning the root canal.

scholarly journals Shaping Ability, Cyclic Fatigue Resistance and Fractographic Analysis of Hybrid and Reciprocating Nickel Titanium Endodontic Instruments

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 172 ◽  
Author(s):  
Saulius Drukteinis ◽  
Vytaute Peciuliene ◽  
Ruta Bendinskaite ◽  
Vilma Brukiene ◽  
Rasmute Maneliene ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Root Canal ◽  
Cyclic Fatigue ◽  
Nickel Titanium ◽  
Significance Level ◽  
Root Canals ◽  
Working Length ◽  
Before And After ◽  
Canal Transportation ◽  
Shaping Ability

The aim of this study was to investigate the shaping ability and cyclic fatigue resistance of Genius (GN) and WaveOne (WO) nickel-titanium (NiTi) instruments. Forty mesial root canals of mandibular molars were randomly divided into two groups, according to the instrument system used for root canal preparation (n = 20): GN and WO. Root canals were prepared to the full working length using the crown-down technique, with up to 40.04 instruments for GN group and 40.08 instruments for WO group. Specimens were scanned with a µCT before and after instrumentation. The changes in 3D parameters and degree of canal transportation were evaluated in the apical, middle and coronal thirds of root canals. Size 25, taper 0.04 (GN) and 0.08 (WO) instruments (n = 20) were used in simulated root canals until fracturing, and the number of cycles to failure (NCF) was recorded. The fractured files were investigated under a scanning electron microscope to characterize fractured surfaces. Data were analyzed using ANOVA post hoc Tuckey’s tests with the significance level set at 5%. The GN system was able to prepare the higher percentage of the canal surface with less canal transportation in all root canal thirds and displayed the higher resistance to cyclic fatigue in comparison to WO instruments (p < 0.05). However, the length of the fractured segments was not significantly different among the groups; meanwhile, SEM investigations revealed the typical topographic characteristics of fractured surfaces. Hybrid GN instruments demonstrated superior shaping ability and resistance to cyclic fatigue. However, both NiTi instrument systems prepared the root canals with no significant shaping errors, considerable changes in 3D parameters and no significant differences in the topographic appearances of the instrument surfaces after fractures.

scholarly journals Evaluation of apical deviation in root canals instrumented with K3 and ProTaper systems

2006 ◽  
Vol 14 (6) ◽  
pp. 460-464 ◽  
Author(s):  
Mariana Diniz Bisi dos Santos ◽  
Marília Fagury Marceliano ◽  
Patrícia Rodrigues de Almeida Silva e Souza
Keyword(s):  
Root Canal ◽  
Three Dimensional ◽  
System Evaluation ◽  
Parametric Test ◽  
Root Canals ◽  
Before And After ◽  
Group A ◽  
Group B ◽  
Curved Root Canals

OBJECTIVES: this study evaluated the apical deviation of curved root canals instrumented with K3 and ProTaper systems. MATERIAL AND METHODS: twenty root canals of human maxillary and mandibular first molars were employed, which were divided into 2 groups: group A (10 teeth) was instrumented with the K3 system, and group B (10 teeth) with the ProTaper system. Evaluation of deviation was performed by double radiographic exposure. Radiographs were achieved before and after instrumentation, with 0.3-second, thus allowing superimposition of images. Three-dimensional computerized tomograph was performed in 3 specimens in each group, as an additional means to evaluate the apical deviation. RESULTS: were evaluated by the parametric test Student-Newman-Keuls at 5%, which did not reveal significance between groups concerning the apical deviation. The results of computerized tomograph images demonstrated that the larger deviation of the root canal occurred at the distolingual area for both systems. CONCLUSIONS: both techniques produced a mild apical deviation. Computerized microtomography was shown to be accurate for experimental endodontics studies.

scholarly journals Magnetic Resonance Imaging for Assessment of Endodontic Instruments’ Precision during “L-Shaped” Model Root Canals Preparation

2021 ◽  
Vol 11 (3) ◽  
pp. 1051
Author(s):  
Tomasz Olek ◽  
Władysław P. Węglarz ◽  
Agata Trzcionka ◽  
Arkadiusz Dziedzic ◽  
Marta Tanasiewicz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Root Canal ◽  
Spin Echo ◽  
Resonance Imaging ◽  
Root Canals ◽  
Mechanical Preparation ◽  
Before And After ◽  
Curved Root Canals

The purpose of the mechanical root canal preparation is to clean it and give it the right shape. The preparation should be carried out in a way that maintains the original curvature and initial orientation of the apical end. Insufficient root canal preparation may prevent effective chemical decontamination and obturation to the full working length. The study aims to evaluate the shaping ability and effectiveness of the NiTi rotary and reciprocating endodontic instruments, compared to standard hand files using magnetic resonance imaging based on spin echo. Material and methods: A comparative study of severely curved root canals’ shaping abilities using three NiTi systems and K-type hand files was performed, with 40 training “endo-blocks” presenting with “L-shaped” canal. The root canal topography and geometry “before” and “after” mechanical preparation obtained by the magnetic resonance imaging based on the spin echo was used. The main measurement was made using the RARE sequence, with slice thickness reduced to 100 micrometers. In order to improve the signal-to-noise ratio, NA = 25 was used. To minimize the measurement time, the field of view was limited to a cuboid 17 × 16 × 3 mm, with a resolution of 33 × 31 × 100 micrometers. Each 3D image consisted of 512 × 512 × 30 voxels. The imaging plane has been selected in such a way as to fully illustrate the course of curvature of the model root canal. For TR = 5 s and effective TE = 36 ms, TA was 1.5 h. Measurements were performed twice, before and after the preparation of endo-blocs with a selected type of endodontic tools. Results: The use of rotary NiTi instruments caused a substantial alteration in the curvature topography and angle of the canals and change in the curvature length. The substantial discrepancy was observed during the preparation of simulated root canals with the reciprocating instruments and the use of WaveOne files led to the largest volume variation. No dependence between the amount of material removed and the measured intracanal side was observed when NiTi instruments were used. Preparation with hand K-type files revealed a relationship between the measuring side and the amount of material removed, with the lower values obtained for the canals’ internal curvatures. Conclusions: All the studied endodontic instruments allow a safe preparation of curved root canals in simulating in vivo conditions. The abbreviation of original root canals topography does not seem to be significantly altered following mechanical preparation of simulated, severely curved root canals. The spin echo-based magnetic resonance imaging technique can be utilized for visualization of the internal topography of the root’s canals in vitro before and after their mechanical preparation in in vitro conditions. In the future, magnetic resonance microscopy may become a diagnostic tool supporting the work of a clinician.

scholarly journals Root canal treatment of mandibular second premolar tooth with taurodontism

2008 ◽  
Vol 136 (5-6) ◽  
pp. 280-283 ◽  
Author(s):  
Mirjana Vujaskovic ◽  
Branislav Karadzic ◽  
Vesna Miletic
Keyword(s):  
Root Canal ◽  
Rare Case ◽  
Endodontic Treatment ◽  
Lower Percentage ◽  
Pulp Chamber ◽  
Root Canals ◽  
The Third ◽  
Working Length ◽  
Radiographic Interpretation

INTRODUCTION Taurodontism is a morphoanatomical change in the shape of a tooth. An enlarged body of a tooth with smaller than usual roots is a characteristic feature. Internal tooth anatomy correlates with this appearance, which means that a taurodontal tooth has a large pulp chamber and apically positioned furcations. This dental anomaly may be associated with different syndromes and congenital discoders. CASE OUTLINE The case report presents the patient of a rare case of taurodontism in the mandibular second premolar with chronic periodontitis. Endodontic treatment was performed after dental history and clinical examination. Special care is required in all segments of endodontic treatment of a taurodontal tooth from the identification orifice, canal exploration, determining working length, cleaning and shaping and obturation of the root canal. Precurved K-file was used for canal exploration and location of the furcation. One mesial and one distal canal with the buccal position were identified in the apical third of the root canal. The working lengths of two canals were determined by radiographic interpretation with two K-files in each canal and verified with the apex locator. During canal instrumentation, the third canal was located in the disto-lingual position. The working length of the third canal was established using the apex locator. CONCLUSION Thorough knowledge of tooth anatomy and its variations can lead to lower percentage of endodontic failure. Each clinical case involving these teeth should be investigated carefully, clinically and radiographically to detect additional root canals. High quality radiographs from different angles and proper instrumentarium improve the quality of endodontic procedure.

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