Comparative evaluation of dentinal crack formation after root canal preparation with Neoendo Flex and Mani Silk files: An in vitro study

Guha, Ananya; Pandharikar, Richa; Shivangi, Shreya; Rao, Rahul D; Verma, Meenakshi; Jain, Ashish

doi:10.4103/jcd.jcd_428_20

Cited by 6 publications

(6 citation statements)

References 19 publications

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“…[ 68 69 ] Previous studies have evaluated different methods of identifying dentinal microcracks after endodontic treatment, and have found no difference between micro-CT and stereomicroscope. [ 54 ] Although scanning electron microscopy identified a higher percentage of microcracks than micro-CT or stereomicroscopy,[ 70 71 ] the sample preparation for this analysis can result in new microcrack formation, thus overestimating the incidence of microcracks. [ 54 ] Furthermore, stereomicroscope requires sectioning of the root, thereby not allowing adequate evaluation before endodontic treatment is initiated.…”

Section: Discussionmentioning

confidence: 99%

Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis

et al. 2022

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Background: Due to the large number of publications relating the occurrence of dental microcracks to endodontic procedures, this bibliometric study evaluated the scientific pattern and trends in literature and provided an overview of scientific production in this context. Aim: To analyze, quantify, and characterize the scientific production and trends of published articles evaluating dentinal microcracks formation after endodontic treatment procedures between 2010 and 2020 using bibliometric indicators. Materials and Methods: Published articles were found by the search in the Medline (PubMed) and Scopus database using the combination of the following keywords: Dentinal crack OR Dentinal Microcrack OR Crack formation OR Dentin Defect AND Endodontic treatment OR Root canal preparation OR Canal Preparation OR Root canal treatment OR endodontic procedures. The search was also conducted in the Journal of Endodontics and International Endodontic Journal. After inclusion and exclusion criteria application, data from all studies included were collected. Results: Among the 556 results after the search, 45 studies were included and analyzed in this bibliometry. No trend was observed in terms of the increasing number of articles over time. Most of them used an in vitro design, compared the effect of different endodontic techniques/systems for root canal instrumentation on dentinal microcracks formation, and were conducted in Turkey, Brazil, and India. Journal of Endodontics and International Endodontic Journal were the main journals with a higher number of articles published. Interestingly, studies conducted with some funding did not lead to higher citation numbers. Moreover, a relevant proportion of studies did not consider the inclusion of control groups, baseline evaluation, or statistical analysis. Micro-CT was the main technique used to evaluate microcrack presence. Conclusion: Microcrack formation after the use of different endodontic techniques/systems has been constantly evaluated in the literature. There is a pattern of methodologies used, which may explain the concentration of these studies in specific journals and countries.

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Section: Discussionmentioning

confidence: 99%

Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis

et al. 2022

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“…Taken together, the inconsistency among the clinical incidence of VRFs, the reported incidence of dentinal microcracks in laboratorial studies, the position of the cracks starting mostly from the outside surface of the root instead of the root canal walls (Figure 6a), and the large discrepancy of laboratory‐based results pointed out that the destructive sectioning method was inappropriate to study the influence of endodontic procedures on dentinal crack formation. Although it seems logical that such a limited methodological approach (sectioning method) to study dentinal defects in extracted/stored teeth should not be accepted by scientific journals, articles using this method are still being published (Bürklein et al, 2018; Cassimiro et al, 2018; Das et al, 2018; Fráter et al, 2020; Guha et al, 2020; Haridas et al, 2020; Jacob et al, 2019; Khoshbin et al, 2018; Kumar et al, 2020; Lin & Ghani, 2021; Nishad & Shivamurthy, 2018; de Oliveira et al, 2017a).…”

Section: Reviewmentioning

confidence: 99%

A critical analysis of research methods and experimental models to study dentinal microcracks

Versiani¹,

Cavalcante

Belladonna

et al. 2021

Int Endodontic J

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The purpose of this narrative review was to discuss the scientific milestones that led to the current understanding of the root dentinal microcrack phenomenon based on the interplay between the usage of micro-computed tomography (micro-CT) as an analytical tool alongside a close-to-mouth experimental model. In 2009, reports on the development of dentinal microcracks in extracted teeth after root canal preparation triggered an awareness of the potential for vertical root fractures (VRFs) of endodontically treated teeth could be developed from defects created by the mechanical stress of nickel-titanium preparation systems on dentine. This assumption was taken for granted, even though no cause-effect relationship had been scientifically demonstrated. Since then, several studies using the sectioning method with extracted teeth have been published and the large discrepancy amongst their outcomes soon become evident. Moreover, the high frequency of reported dentinal microcracks largely contrasted with the clinical incidence of VRFs, raising doubts on their methodological reliability. Using micro-CT technology, it was demonstrated by several studies that, in extracted teeth, dentinal defects already existed before the endodontic procedures, indicating that the initial reports framed a non-existing cause-effect relationship between canal preparation and dentinal microcracks. Although these new findings contributed to a better comprehension of this phenomenon, the misconception that microcracks were the starting point for VRFs was only surpassed with a new in situ approach using fresh cadavers. Surprisingly, microcracks were not identified in sound teeth. As a conclusion, dentinal microcracks in extracted teeth can be considered a non-natural occurrence observed only in a laboratory set-up as a consequence of dehydration and storage conditions. Thus, dentinal microcracks shall not be considered as the starting point for VRFs as they do not manifest in nonextracted teeth. Identifying dentinal microcracks as a laboratory phenomenon highlights the impact of recent scientific developments to disclaim the clinical relevance of laboratory-obtained outcomes.

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“…[9][10] NeoEndo Flex and ProTaper Gold represent two commercially available rotary NiTi file systems with different manufacturing philosophies designed to enhance cyclic fatigue resistance. [11][12][13][14] Comparative Analysis of Cyclic Fatigue Resistance of NeoEndo Flex Vs Protaper Gold Rotary Files: An In-Vitro Study NeoEndo Flex files employ a thermal treatment process, which is speculated to develop a more flexible file that can better withstand the stresses encountered in narrow and curved canals. On the other hand, ProTaper Gold builds upon the legacy of the ProTaper family by incorporating a novel gold finishing process that asserts to offer a balance between strength and flexibility, thereby potentially extending the file's functional lifespan.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, ProTaper Gold builds upon the legacy of the ProTaper family by incorporating a novel gold finishing process that asserts to offer a balance between strength and flexibility, thereby potentially extending the file's functional lifespan. 11,12,14 The objective of this research is a detailed in-vitro assessment of the cyclic fatigue resistance of NeoEndo Flex and ProTaper Gold rotary NiTi files. In-vitro testing facilitates the replication of consistent and controlled conditions that may not be readily achievable in live clinical scenarios.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Cyclic Fatigue Resistance of NeoEndo Flex Vs Protaper Gold Rotary Files: An In-Vitro Study

Vashisht,

Dave,

Singh

2024

SVOADE

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Background: During the endodontic process, cleaning and shaping are essential steps. The fracture of nickel-titanium (NiTi) tools is a procedural issue that significantly impedes therapy in normal endodontic therapy. Efficient and reliable endodontic therapy requires rotary NiTi files that demonstrate superior cyclic fatigue resistance to prevent file separation within the canal. This study aimed to investigate the in-vitro cyclic fatigue resistance of two commonly used rotary NiTi files: NeoEndo Flex file and ProTaper Gold file. Methods: The cyclic fatigue tests were carried out by determining the lifespan of each file type in a controlled environment mimicking a curved root canal. A total of 30 files (15 NeoEndo Flex and 15 ProTaper Gold) were subjected to continuous rotation until fracture occurred. The numbers of cycles until failure (NCF) were recorded for statistical comparison. Results: The ProTaper Gold files showed significantly higher NCF, indicative of stronger cyclic fatigue resistance when compared to NeoEndo Flex files (p < 0.05). The variance in fatigue resistance is attributable, in part, to differences in alloy composition and proprietary heat treatment processes. Conclusion: ProTaper Gold rotary NiTi files exhibited enhanced cyclic fatigue resistance in comparison to NeoEndo Flex, suggesting that they may be the preferred choice for clinical procedures where greater stresses are anticipated on the file. However, clinicians should balance file strength with other clinical factors when choosing the appropriate file for endodontic treatment.

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Comparative evaluation of dentinal crack formation after root canal preparation with Neoendo Flex and Mani Silk files: An in vitro study

Cited by 6 publications

References 19 publications

Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis

Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis

A critical analysis of research methods and experimental models to study dentinal microcracks

Comparative Analysis of Cyclic Fatigue Resistance of NeoEndo Flex Vs Protaper Gold Rotary Files: An In-Vitro Study

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