scholarly journals Evaluation of Apically Extruded Debris and Irrigant Produced by Different Nickel-Titanium Instrument Systems in Primary Teeth

2015 ◽  
Vol 16 (11) ◽  
pp. 864-868 ◽  
Author(s):  
Ebru Kucukyilmaz ◽  
Selcuk Savas ◽  
Gokhan Saygili ◽  
Banu Uysal
Keyword(s):  
Primary Teeth ◽  
File System ◽  
File Systems ◽  
Nickel Titanium ◽  
Root Canals ◽  
System A ◽  
Bonferroni Adjustment ◽  
Single File ◽  
Significant Difference ◽  
Irrigation Solution

ABSTRACT Aim The purpose of this study was to determine the amount of extruded debris and irrigant associated with different single-file systems and one multiple-file system. Materials and methods Forty-five newly extracted single rooted primary canine teeth were used in this study. The root canals were instrumented using the reciprocating single-file system, the single-file rotary system and the multiple-file rotary system. A 10–6 precision micro-balance was used to calculate the amount of extruded debris and irrigant. The incubation period was set as 15 days at 37°C to obtain dry debris. The preparation time for instrumentation was also recorded. The data were statistically analyzed by Manova and Bonferroni adjustment. Results Considering the apically extruded debris, while there was statistically significant difference between Reciproc and OneShape groups (p < 0.05), no statistically significant difference was found among the other groups (p > 0.05). In terms of irrigation solution, although significant difference was obtained between the Reciproc and other two groups (p < 0.05), no statistically significant difference was obtained between the two rotary instruments (p > 0.05). Instrumentation was significantly faster using Reciproc than with all other instrument (p < 0.05). Conclusion All systems caused apical debris and irrigant extrusion. Full-sequences rotary instrumentation systems may be preferable for preparation primary teeth. Clinical significance This is the first study carrying out to compare both apical debris and irrigation solution extrusion with reciprocal and rotary single-file systems with other preparation systems in primary teeth. How to cite this article Kucukyilmaz E, Savas S, Saygili G, Uysal B. Evaluation of Apically Extruded Debris and Irrigant Produced by Different Nickel-Titanium Instrument Systems in Primary Teeth. J Contemp Dent Pract 2015;16(11):864-868.

scholarly journals Cone-beam Computed Tomographic Analysis of Canal Transportation and Centering Ability of Three Different Nickel-Titanium Rotary File Systems

2021 ◽  
Vol 9 (D) ◽  
pp. 30-36
Author(s):  
Balaji Sopanrao Kapse ◽  
Pradnya S. Nagmode ◽  
Jayshree Ramkrishna Vishwas ◽  
Hrishikesh B. Karpe ◽  
Harshal V. Basatwar ◽  
...  
Keyword(s):  
Root Canal ◽  
File System ◽  
File Systems ◽  
Nickel Titanium ◽  
Root Canals ◽  
Apical Transportation ◽  
Significant Difference ◽  
Canal Transportation ◽  
Curved Root Canals

AIM: The aim of the present study was to compare the canal transportation and centering ability of three rotary nickel-titanium file systems, HyFlex controlled memory, Revo-S, and Mtwo in moderately curved root canals using computed tomography (CT). MATERIALS AND METHODS: Thirty freshly extracted single-rooted teeth having curved root canals with at least 10°–20° of curvature were selected. The teeth were divided into three experimental groups of ten each. After preparation with HyFlex CM (Coltene-Whaledent, Allstetten, Switzerland), Revo-S (Micro-Mega, Besançon, France), and Mtwo (VDW, Munich, Germany) all teeth were scanned using CT to determine the root canal shape. Pre- and post-instrumentation images were obtained at three levels, 3 mm apical, 9 mm middle, and 15 mm coronal above the apical foramen were compared using CT software. Amount of transportation and centering ability were assessed. The three groups were statistically compared with analysis of variance and post-hoc Tukey’s honestly significant difference test. RESULTS: Least apical transportation and higher centering ability were seen in HyFlex CM file system in all the three sections followed by Revo-S, Mtwo file system showed maximum transportation. CONCLUSIONS: According to the present in-vitro study, we can conclude that HyFlex CM rotary file systems showed least canal transportation and highest centering ability as compared to Revo-S and Mtwo file system but there was no statistically significant difference among these file systems (p > 0.05) at coronal, middle, and apical level of root canal.

scholarly journals Extrusion of Debris from Primary Molar Root Canals following Instrumentation with Traditional and New File Systems

2017 ◽  
Vol 18 (11) ◽  
pp. 1040-1044 ◽  
Author(s):  
Bhagyashree Thakur ◽  
Ajinkya M Pawar ◽  
Anda Kfir ◽  
Prasanna Neelakantan
Keyword(s):  
Primary Teeth ◽  
File Systems ◽  
Primary Molar ◽  
Group Iii ◽  
Root Canals ◽  
Group I ◽  
Significant Difference ◽  
Molar Teeth ◽  
Post Hoc ◽  
Root Canal Instrumentation

ABSTRACT Introduction To assess the amount of debris extruded apically during instrumentation of distal canals of extracted primary molars by three instrument systems [ProTaper Universal (PTU), ProTaper NEXT (PTN), and self-adjusting file (SAF)] compared with conventional stainless steel hand K-files (HF, control). Materials and methods Primary mandibular molars (n = 120) with a single distal canal were selected and randomly divided into four groups (n = 30) for root canal instrumentation using group I, HF (to size 0.30/0.02 taper), group II, PTU (to size F3), group III, PTN (to size X3), and group IV, SAF. Debris extruded during instrumentation was collected in preweighed Eppendorf tubes, stored in an incubator at 70°C for 5 days and then weighed. Statistical analysis was performed by one-way analysis of variance (ANOVA), followed by Turkey's post hoc test (p = 0.05). Results All the groups resulted in extrusion of debris. There was statistically significant difference (p < 0.001) in the debris extrusion between the three groups: HF (0.00133 ± 0.00012), PTU (0.00109 ± 0.00005), PTN (0.00052 ± 0.00008), and SAF (0.00026 ± 0.00004). Conclusion Instrumentation with SAF resulted in the least debris extrusion when used for shaping root canals of primary molar teeth. Clinical significance Debris extrusion in primary teeth poses an adverse effect on the stem cells and may also alter the permanent dental germ. Debris extrusion is rarely reported for primary teeth and it is important for the clinician to know which endodontic instrumentation leads to less extrusion of debris. How to cite this article Thakur B, Pawar AM, Kfir A, Neelakantan P. Extrusion of Debris from Primary Molar Root Canals following Instrumentation with Traditional and New File Systems. J Contemp Dent Pract 2017;18(11):1040-1044.

scholarly journals Evaluation of the WaveOne Gold and One Shape New Generation in Reducing Enterococcus faecalis from Root Canal

2018 ◽  
Vol 29 (3) ◽  
pp. 249-253 ◽  
Author(s):  
Raquel Esmeralda Guillén ◽  
Cleber Keiti Nabeshima ◽  
Hector Caballero-Flores ◽  
Miguel Roig Cayón ◽  
Montse Mercadé ◽  
...  
Keyword(s):  
Enterococcus Faecalis ◽  
Root Canal ◽  
File Systems ◽  
Bacterial Reduction ◽  
Root Canals ◽  
Single File ◽  
Bacterial Removal ◽  
Significant Difference ◽  
Post Hoc ◽  
New Generation

Abstract The aim of this study was to evaluate the WaveOne Gold and One Shape New Generation systems regarding the bacterial removal from root canals infected with Enterococcus faecalis by comparing them to the conventional WaveOne and One Shape systems. Forty-eight distobuccal root canals of maxillary molars sterilized with ethylene oxide were infected with E. faecalis for 21 days, and then root canal initial bacterial sample was collected with paper cones and plated on M-enterococcus agar. The specimens were randomly divided into 4 groups according to the instrumentation: WaveOne Gold, One Shape New Generation, WaveOne and One Shape. After instrumentation, samples were collected with use of scraping and paper cones at immediate and 7 days after instrumentation. The bacterial reduction was calculated and then made intragroup analysis by Friedman test and intergroup analysis by Kruskal-Wallis with Dunn’s post-hoc test, all at 5% significance. All techniques significantly reduced the number of bacteria in the root canal (p<0.05). WaveOne Gold and One Shape New Generation promoted higher bacterial reduction than WaveOne and One Shape systems (p<0.05), but no significant difference was found between WaveOne Gold and One Shape New Generation or between WaveOne and One Shape (p>0.05). Novel single-file systems promote better bacterial removal than the conventional single-file systems.

scholarly journals Nickel-Titanium Single-file System in Endodontics

2015 ◽  
Vol 16 (10) ◽  
pp. 834-839
Author(s):  
Alberto Dagna
Keyword(s):  
Root Canal ◽  
File System ◽  
Nickel Titanium ◽  
Root Canals ◽  
Single File ◽  
Continuous Rotation ◽  
Bending Stresses ◽  
Single Use ◽  
Canal Shaping ◽  
Clinical Cases

ABSTRACT Aim This work describes clinical cases treated with a innovative single-use and single-file nickel-titanium (NiTi) system used in continuous rotation. Background Nickel-titanium files are commonly used for root canal treatment but they tend to break because of bending stresses and torsional stresses. Today new instruments used only for one treatment have been introduced. They help the clinician to make the root canal shaping easier and safer because they do not require sterilization and after use have to be discarded. A new sterile instrument is used for each treatment in order to reduce the possibility of fracture inside the canal. The new One Shape NiTi single-file instrument belongs to this group. Case description One Shape is used for complete shaping of root canal after an adequate preflaring. Its protocol is simple and some clinical cases are presented. It is helpful for easy cases and reliable for difficult canals. Conclusion After 2 years of clinical practice, One Shape seems to be helpful for the treatment of most of the root canals, with low risk of separation. After each treatment, the instrument is discarded and not sterilized in autoclave or re-used. Clinical significance This single-use file simplifies the endodontic therapy, because only one instrument is required for canal shaping of many cases. The respect of clinical protocol guarantees predictable good results. How to cite this article Dagna A. Nickel-Titanium Single-file System in Endodontics. J Contemp Dent Pract 2015;16(10): 834-839.

scholarly journals Shaping ability of the profile 25/0.06 and protaper F2 in rotary motion, and reciproc in simulated canals

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e6109
Author(s):  
Gül Çelik ◽  
Murat Maden ◽  
Ahmet Savgat ◽  
Hikmet Orhan
Keyword(s):  
File Systems ◽  
Apical Part ◽  
Middle Part ◽  
Nickel Titanium ◽  
Human Teeth ◽  
Root Canals ◽  
Single File ◽  
Working Length ◽  
Shaping Ability ◽  
Different Levels

Background Since the introduction of nickel–titanium (Ni–Ti) instruments to dentistry, a wide variety of Ni–Ti instruments have become commercially available. These Ni–Ti instruments are expensive, which limits their usage in developing countries and forces practitioners to use instruments repeatedly. Another problem is the possible prion cross-contamination associated with the multiple usage of endodontic instruments. In addition, the use of these instruments requires new skills and experience. In this article, the shaping capacities of two conventional rotary file systems, ProFile 25/0.06 and ProTaper F2, were reviewed and compared with the Reciproc single-file system. Methods A total of 45 simulated canals with 40° curvature, in clear resin blocks, were prepared using conventional rotary systems consisting of ProFile orifice shaping (OS) #3 and final flaring #25/.06, Reciproc R25, and ProTaper shaping file SX and finishing file F2. Pre-and post-instrumentation images were analyzed at ten different levels, using AutoCAD 2007 software. The measurement positions were defined in 1-mm intervals: positions 0–3 established the apical part, positions 4–6 constituted the middle part, and positions 7–10 established the coronal part of the canal. The amount of removed resin, the transportation, instrumentation time, change in working length (WL), instrumentation fractures, and the presence of ledge were evaluated. Data were analyzed using ANOVA, Kruskal–Wallis and independent t-test (p < 0.001). Results ProFile removed the least resin (p < 0.001) and caused less transportation than Reciproc and ProTaper, in total (p < 0.001). ProTaper caused more transportation ProFile and Reciproc in the apical part (p < 0.000). Reciproc caused more transportation than ProTaper and ProFile (p < 0.001), and the transportation tendency toward the inner aspect of the curvature in the middle part. Reciproc caused the less transportation than ProFile and ProTaper in the coronal part. The transportations tended to occur toward the outside of the curvature, except the middle part with Reciproc and at points 5 and 6 with ProTaper. There were no significant differences among the groups in terms of maintaining the original WL. Reciproc was significantly faster than the others group (p < 0.001). Only one instrument fracture (25/0.06 ProFile) was noted. All groups showed one ledge each. Discussion The results of the present study showed that both ProFile 25/06 and ProTaper F2, combined with a file used for coronal enlargement (OS3 and SX), have the potential to create satisfactory canal shape in the curved root canals. Further studies using real human teeth are needed to confirm our results.

scholarly journals Histological evaluation of the cleaning effectiveness of two reciprocating single-file systems in severely curved root canals: Reciproc versus WaveOne

2015 ◽  
Vol 09 (01) ◽  
pp. 080-086 ◽  
Author(s):  
Maira de Souza Carvalho ◽  
Emílio Carlos Sponchiado ◽  
Angela Delfina Bitencourt Garrido ◽  
Lucas da Fonseca Roberti Garcia ◽  
André Augusto Franco Marques
Keyword(s):  
File Systems ◽  
Negative Control Group ◽  
Negative Control ◽  
Histological Evaluation ◽  
Control Group ◽  
Root Canals ◽  
Single File ◽  
Significant Difference ◽  
Digital Microscope ◽  
Curved Root Canals

ABSTRACT Objective: The aim of this study was to evaluate the cleaning effectiveness achieved with two reciprocating single-file systems in severely curved root canals: Reciproc and WaveOne. Materials and Methods: Twenty-five mesial roots of mandibular molars were randomly separated into two groups, according to the instrumentation system used. The negative control group consisted of five specimens that were not instrumented. The mesial canals (buccal and lingual) in Reciproc Group were instrumented with file R25 and the WaveOne group with the Primary file. The samples were submitted to histological processing and analyzed under a digital microscope. Results: The WaveOne group presented a larger amount of debris than the Reciproc Group, however, without statistically significant difference (P > 0.05). A larger amount of debris in the control group was observed, with statistically significant difference to Reciproc and WaveOne groups (P < 0.05). Conclusions: The two reciprocating single-file instrumentation systems presented similar effectiveness for root canal cleaning.

scholarly journals COMPARATIVE EVALUATION OF RADICULAR DENTINE THICKNESS IN DANGER ZONE OF MANDIBULAR FIRST MOLAR AFTER INSTRUMENTATION WITH TWO DIFFERENT ROTARY SYSTEMS USING CBCT - AN INVITRO STUDY

2020 ◽  
Vol 4 (8) ◽  
Author(s):  
Ambika Sigadam ◽  
Kalyan Satish R ◽  
Girija. S. Sajjan ◽  
Madhu Varma K ◽  
Kolla Vishal Babu ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
File System ◽  
File Systems ◽  
Danger Zone ◽  
Single File ◽  
Significant Difference ◽  
Before And After ◽  
Distal Surface ◽  
Mandibular First Molar ◽  
Dentin Thickness

Introduction: The mandibular first molar poses a series of anatomic challenges such as multiple canals, isthmuses, lateral canals, and apical ramifications. Additionally, the distal surface of mesial root presents a thin zone, which is 4-6 mm cervical to canal orifice with a thin area of dentin termed as “danger zone,” as it increases the risk of perforation of furcal dentin during mechanical instrumentation. Aim: To measure the amount of the dentin removed after biomechanical preparation with XP-Endoshaper and Neoendo flex files in the danger zone of the mandibular first molar using CBCT. Methodology: Twenty-four mandibular first molars, the mesial roots of which presented a curvature of 20-30 degrees, were selected using the Schneider method. Samples were instrumented with Neoendo rotary file system (n=12) and XP-Endoshaper rotary single file system (n=12). The samples were scanned using CBCT before and after instrumentation. The analyzed parameter includes the remaining dentin thickness at the danger zone of the mandibular 1st molar. The obtained data were subjected to statistical analysis. Results: There was no significant difference in remaining dentine thickness between the two rotary systems (p > 0.05). Conclusion: XP-Endoshaper revealed better results than Neoendo rotary files. However, both rotary file systems showed no significant difference in the remaining dentin thickness in the danger zone of the mandibular first molar. Keywords: Danger zone, Remaining dentine thickness, XP EndoShaper, NeoEndo, CBCT.

scholarly journals Quantitative evaluation of apically extruded debris during root canal instrumentation with ProTaper Universal, ProTaper Next, WaveOne, and self-adjusting file systems

2014 ◽  
Vol 08 (04) ◽  
pp. 504-508 ◽  
Author(s):  
Damla Ozsu ◽  
Ertugrul Karatas ◽  
Hakan Arslan ◽  
Meltem C. Topcu
Keyword(s):  
Root Canal ◽  
File Systems ◽  
Universal Group ◽  
Significance Level ◽  
Root Canals ◽  
Single File ◽  
Measurable Amount ◽  
Significant Difference ◽  
The One ◽  
Root Canal Instrumentation

ABSTRACT Objectives: The aim of this study was to compare the amount of apically extruded debris during preparation with ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland), ProTaper Next (Dentsply Maillefer), a reciprocating single-file (WaveOne; VDW GmbH, Munich, Germany), and a self-adjusting file (SAF; ReDent Nova, Ra'anna, Israel). Materials and Methods: Fifty-six intact mandibular premolar teeth were randomly assigned to four groups. The root canals were prepared according to the manufacturers’ instructions using the ProTaper Universal, ProTaper Next, WaveOne, and SAF. Apically extruded debris was collected in preweighted Eppendorf tubes during instrumentation. The net weight of the apically extruded debris was determined by subtracting the preweights and postweights of the tubes. The data were statistically analyzed using the one-way analysis of variance and the least significant difference tests at a significance level of P < 0.05. Results: A measurable amount of debris was apically extruded in all groups, and the amounts of debris extrusion in the groups were statistically significant (P < 0.001). The ProTaper Next and WaveOne groups resulted in less debris extrusion than the ProTaper Universal group (P < 0.05), and the SAF group resulted in the least debris extrusion. Conclusions: Within the limitations of the present study, it can be concluded that all systems extruded debris beyond the apical foramen.

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