|Year : 2022 | Volume
| Issue : 1 | Page : 78-87
|Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis
Stephanie Quadros Tonelli1, Kenia Soares de Toubes1, Andre Maues Brabo Pereira2, Antonio Carlos de Oliveira Miranda3, Leticia Ladeia Fernandes1, Eduardo Nunes1, Frank Ferreira Silveira1
1 Department of Dentistry, Pontifical Catholic University of Minas Gerais, Avenida Dom José Gaspar, 500, Belo Horizonte, MG 30535-901, Brazil
2 Department of Civil and Environmental Engineering, University of Brasília, SG-12 Building, Darcy Ribeiro Campus, DF 70910-900, Brazil
3 Department of Computer Science, Institute of Computing, Fluminense Federal University, Rua Passo da Patria, 156, Niterói, RJ 24220-900, Brazil
Click here for correspondence address and email
|Date of Submission||19-Sep-2021|
|Date of Decision||18-Dec-2021|
|Date of Acceptance||25-Dec-2021|
|Date of Web Publication||02-May-2022|
| Abstract|| |
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.
Keywords: Bibliometric analysis; dentinal defects; endodontic; microcrack; scientometric analysis
|How to cite this article:|
Tonelli SQ, de Toubes KS, Brabo Pereira AM, de Oliveira Miranda AC, Fernandes LL, Nunes E, Silveira FF. Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis. J Conserv Dent 2022;25:78-87
|How to cite this URL:|
Tonelli SQ, de Toubes KS, Brabo Pereira AM, de Oliveira Miranda AC, Fernandes LL, Nunes E, Silveira FF. Dentinal microcracks induced by endodontic procedures: A scientometric and bibliometric analysis. J Conserv Dent [serial online] 2022 [cited 2022 Jul 5];25:78-87. Available from: https://www.jcd.org.in/text.asp?2022/25/1/78/344522
| Introduction|| |
Endodontic procedures directly affect root canal structure. The different techniques can generate some root defects, although endodontic treatment systems have been constantly enhanced over time.,, The different endodontic systems used optimize root canal instrumentation and shaping, filling procedures, and clinical time., However, these systems may lead to tooth structure removal and higher mechanical load on the root canal, thereby affecting tooth integrity.,,
Dentinal microcracks have been associated as a common sequel of root canal treatment procedures.,,, which presence can reduce root resistance., In fact, the literature has suggested that some dentinal defects can act as the first step to vertical tooth fracture and, consequently, result in tooth extraction. Recently, a systematic review suggested that when a proper technique is applied to treat root canals, the risk for dentinal microcrack can be reduced.
Dentinal microcrack has been evaluated and compared with different treatment modalities since that different root canal instrumentation systems have been developed.,, Previous in vitro, in situ, and in vivo studies have evaluated the effect of different instrumentation systems, disinfection protocol, endodontic retreatment, and filling procedures on dentinal microcrack development.,,,,, These different approaches to evaluate dentinal microcracks presence and the different reasons to generate these defects suggest no clear pattern or evidence in this topic. In this context, dentinal microcrack evaluation after endodontic treatment is an emerging and important topic to be considered by scientific evidence to guide clinical approach and reduce this undesirable situation. Therefore, the bibliometric evaluation of studies in this topic may contribute significantly to evaluating the pattern of scientific evidence generated, its impact, gaps to be considered by the literature, and to guide future studies.
Bibliometric analyses are important tools to identify trends and patterns of scientific evidence produced on a specific topic, or in a specific area or journal., This kind of approach evaluates different aspects of articles produced in a specific field both quantitatively and qualitatively and provides information gathered from a specific level (authors) to a broader level (countries/world)., Therefore, bibliometry can be considered a relevant metric of science, and an extremely important tool that can be used to provide an overview of both oppositional and relevant new topics, such as microcrack formation after endodontic treatment. Moreover, identification of such patterns is very useful in identifying the problems and gaps to be overcome by future studies, mainly in terms of methodology, scientific progress, and ultimate improvement in therapeutic approaches, clinical longevity, and success rates., However, no previous study has conducted a bibliometric analysis of the literature to improve the existing knowledge by evaluating the effect of endodontic treatment procedures on dentinal microcrack development.
This study aimed to analyze, quantify, and characterize scientific production and trends of published articles evaluating dentinal microcrack formation after endodontic treatment procedures between 2010 and 2020, using bibliometric indicators.
| Materials and Methods|| |
A scientific search was conducted to answer the following question: “What is the scientific production, regarding dentinal microcrack formation after endodontic treatment procedures, made in the last 10 years?” This bibliometric analysis took into account the scientific production between 2010 and 2020 and was made on October 17, 2020, in the MEDLINE (PubMed) and Scopus databases. The combination of the following keywords was used to query the database: 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 conducted in the field of interest and considered the title, keywords, and abstract of the studies. Moreover, the combination of some keywords (dentinal microcrack and endodontic treatment) was used to identify studies published in the Journal of Endodontics and International Endodontic Journal, the two endodontic journals with the highest impact factor according to the Web of Science Journal Citation Reports. The list of references of the included studies was also checked for any additional studies that may not have been included in the previous search. The inclusion criteria involved only studies reporting on dentinal microcracks after endodontic treatment procedures, qualitative and/or quantitative evaluation of microcracks, and studies published in English; in vivo, ex vivo, in vitro, and in situ studies; studies using human teeth. The exclusion criteria consisted of reviews and case reports; letters to the editor and comments; any study that did not meet the specifications of the inclusion criteria. The first step was to exclude all the duplicates of the two databases; then, all the studies were screened according to the topic and field by reading their title and abstract. All the studies in the field, which met the inclusion criteria, were selected for full-text eligibility. Thus, only studies were included in this bibliometric analysis.
The following data were collected from the studies: First, the author, journal, year of publication according to the database or the information provided in the paper, country of the corresponding author, university/school/institute of the corresponding author, number of institutions in the article, impact factor of the journal, number of citations in the Scopus database, average citations per year, funding, design, main purpose, endodontic system (hand/manual, reciprocating and/or rotary), the technique used to evaluate the existence of microcracks, the period between treatment and microcrack evaluation, teeth used, existence of a control group, baseline evaluation, statistical analysis, and possible conflicts of interest.
A descriptive analysis of the variables collected was performed using Microsoft Excel software. Graphs were made using PRISM 8 Software (Microsoft Corporation, Redmond, Washington, USA, GraphPad Software, Inc., San Diego, California, USA).
| Results|| |
A total of 556 publications related to the topic were identified in the databases and journals selected. Among them, 45 studies were included and analyzed in this bibliometry after applying the search strategy and inclusion criteria. There is no clear trend in terms of an increase in the number of articles published per year from 2010 to 2020 [Figure 1]a. In 2018–2020, an average of 5.3 studies was published per year evaluating dentinal microcrack formation after endodontic treatment. The year 2017 had the highest number of articles published (14 articles). However, the analysis conducted suggests a slight increase in the number of funded studies over time and a clear decrease in nonfunded/uninformed studies between 2017 and 2020 [Figure 1]a.
|Figure 1: (a) Total number of studies published per year between 2010 and 2020, and according to funding. (b) Distribution of studies according to the three countries with the highest number of papers published: Number of papers per country, and percentage of studies with funding in each country. (c) Average number of institutions in the studies conducted in each country. (d) Venn diagram of the three countries with the highest number of papers published, according to the journal of publication|
Click here to view
All the articles were published between 2012 and 2020, and 88% used an in vitro experimental design [Table 1]. Interestingly, most of the studies evaluated the effect of different techniques or systems (comparisons) on dentinal microcrack formation [Table 1]. Considering the techniques applied in each study, most of the studies compared the differences among rotary, reciprocating, and self-adjusting file systems. These studies were developed in countries from the Americas, Europe, and Asia. The results highlight that the topic of development and application of new instrumentation systems has been evaluated constantly regarding the effect on dentinal microcrack formation.
|Table 1: Description of the studies included, according to year, country of the corresponding author, experimental design, main purpose of the study and root instrumentation technique|
Click here to view
Turkey, India, and Brazil were the three countries with the highest number of articles published, respectively [Figure 1]b. Of these, Brazil was the country with the highest number of institutions per article: An average of 4.2 institutions per study [Figure 1]c. Although Turkey, India, and Brazil were the three countries with the highest number of articles published in the area of dentinal microcrack [Figure 1]d, they published articles in only two journals, the Journal of Endodontics and the International Endodontic Journal [Figure 2]a.
|Figure 2: Characterization of journals and studies included. (a) Number of studies published in the five journals with the highest number of papers published, average citations in papers published in each journal, and average citations per year in each journal. (b) Average number of citations according to the impact factor of the journal. (c) Average number of citations according to funding. (d) Presence of dentin microcracks in the test group. (e) Teeth used in each study. (f) Presence of a control group in the studies. (g) Baseline evaluation in the study, before endodontic treatment. (h) Statistical analysis of data. (i) Techniques used to evaluate presence of dentin microcracks|
Click here to view
The Journal of Endodontics had the highest number of studies published, followed by the International Endodontic Journal, Clinical Oral Investigations, European Journal of Dentistry and Journal of Conservative Dentistry [Figure 2]a. Moreover, the studies published in the Journal of Endodontics also showed the highest average of citations in the Scopus database [Figure 2]a. As expected, the articles published in the journals with the highest impact factor also showed the highest average of citations [Figure 2]b. Interestingly, studies conducted with funding did not show a higher average of citations compared to those without any funding [Figure 2]c.
Two journals had the highest number of articles published in this field, Journal of Endodontics and International Endodontic Journal. The main countries publishing in these journals were Turkey and Brazil [Table 2], in that Turkey was the country with the highest number of papers.
|Table 2: Three countries with the highest number of papers in the two journals with the highest number of papers|
Click here to view
In terms of study design and results, most of the studies found dentinal microcrack formation in the test group after endodontic procedures [Figure 2]d. Human molars and premolars were the teeth most widely used in the studies to evaluate this outcome [Figure 2]e. Although most of the studies evaluated and compared different endodontic techniques and systems, 42% of the studies did not include or report any control group [Figure 2]f. However, 24% of the studies conducted no baseline analysis to check the existence of previous microcracks before the endodontic procedures were initiated [Figure 2]g. Moreover, although group comparison is an important parameter to be evaluated, few studies conducted any statistical analysis [Figure 2]h.
Another important parameter is the technique used to evaluate dentinal microcrack formation. Most of the articles used micro-computed tomography (CT) as the standard and best technique to identify dentinal microcracks [Figure 2]i. However, other techniques have been applied, such as stereomicroscopes and scanning electron microscopy. It is important to highlight those techniques should be standardized to allow comparison between different studies.
| Discussion|| |
This study evaluated for the first time the scientific trend of published articles between 2010 and 2020 evaluating microcrack formation after endodontic procedures. This bibliometric overview provided relevant information to identify important countries and journals publishing on this topic. Although different endodontic techniques and systems have been developed over time, interestingly, there is no increased number of published articles studying dentinal defects,,, such as microcracks. Since these systems, mainly mechanized techniques may lead to higher mechanical load on the root canal,, it is extremely important that new systems be evaluated in terms of dentinal microcracks formation.
In addition, an evident decrease was found to no funding studies in the recent year (2017–2020), and a slight increase for funded studies, which suggests that the endodontic industry is may provide some support for researchers to evaluate new systems. In fact, funding in Dentistry research represents an important part of financial support in the biomedical area, and the previous study showed no gender difference in the award rate.
Turkey was the country with the highest number of published articles, followed by India and Brazil. This is an interesting finding that supports another finding, namely that high and middle-income countries are publishing in this field. However, most likely, the studies by middle-income countries are supported by funding agencies intent on promoting scientific production in the country. This is the case of Brazil, which has conducted a higher number of funded studies than Turkey. Moreover, the studies published in Brazil reveal a higher number of institutions per study, that is, 4.2 institutions. This pattern is quite common in dental research and has also been observed in other topics of research, such as implantology, and even other areas, such as virology. What may be driving the high-quality profile of articles being published is the collaboration among different scientific research institutions. Actually, the present study confirmed that increased scientific production is connected to greater collaboration. This research networking system offers several advantages to scientific development, including new knowledge, new researchers, and improved studies and curriculum. Our findings on Indian studies also corroborate a recent survey that revealed a growing trend of publications from India in the area of Regenerative Endodontics.
As expected, most of the studies presented a in vitro design. The only study designed as an in vivo assay performed in vivo endodontic treatment and microcrack evaluation after tooth extraction. This kind of approach mimics what occurs in endodontic clinical treatment, except that tooth extraction procedures may lead to dentinal microcracks, and baseline evaluation is an important parameter to differentiate the defects caused solely by endodontic procedures. Since most of the studies were conducted with extracted human teeth, and the extraction procedure may lead to some dentinal cracks, it should be underscored that this procedure requires the appropriate selection of teeth. Furthermore, there may be previous microcracks in the dentin of human teeth, caused by functional and parafunctional habits. Therefore, in vitro design is the first option for carrying out this evaluation. Another possibility for studies on this topic are studies on cadaver mandibles/maxillas, in order to satisfactorily reproduce most of the clinical conditions and reduce the risk of bias.,, Although most studies have evaluated the effect of different techniques and systems used for root canal instrumentation on dentinal microcrack formation, they have not evaluated this effect across each step of endodontic treatment. Identification of each specific step and instrument involved in microcrack formation could provide important information that would optimize the endodontic systems and possibly prevent this kind of defect. In this respect, another important parameter constituting an essential part of the scientific method is the use of control groups. to compare the real effect of the tested systems on dentinal microcrack formation. In summary, future studies should consider the baseline evaluation to estimate possible microcracks resulting from endodontic treatment, and the use of control groups to identify the real effect of the procedure. Moreover, the identification of dental microcrack formation after each step of the endodontic treatment should also identify the several different endodontic systems used, to guide clinical practices and enable prevention of this defect.
The Journal of Endodontics had the highest number of articles published in this field, ultimately leading to the highest average of total and yearly citations. Although the journal is American, Turkey was the country with the highest number of papers published in the Journal of Endodontics, highlighting the international nature of the journal, and its role as one of the leading journals in endodontic research and clinical practice. Moreover, this journal has also been the main choice for the publication of articles focusing on other topics, such as regenerative endodontics. Considering that the impact factor is a measure of the article's citations, the studies published in journals with a higher impact factor showed a higher average number of citations. The same citation average was found for studies that showed no effect involving the parameter of citations that could be derived from funding.
In terms of methodology, micro-CT was the main technique used to evaluate dentinal microcracks in the root canal. Overall, different microscopic techniques have been used to perform these evaluations, but some studies do not specify the microscopic technique used, thereby hindering production by others authors. Micro-CT analysis has been widely used in endodontics and provides a quantitative and qualitative assessment for endodontic procedures, including information regarding the location and size of the microcrack after endodontic procedures., Previous studies have evaluated different methods of identifying dentinal microcracks after endodontic treatment, and have found no difference between micro-CT and stereomicroscope. Although scanning electron microscopy identified a higher percentage of microcracks than micro-CT or stereomicroscopy,, the sample preparation for this analysis can result in new microcrack formation, thus overestimating the incidence of microcracks. Furthermore, stereomicroscope requires sectioning of the root, thereby not allowing adequate evaluation before endodontic treatment is initiated. For this reason, micro-CT has been considered the best method to identify dentinal microcrack formation and should be considered as such by future studies.
The basic limitation of this study is based on the fact that all the studies included come from two scientific databases and the two main journals in the field of endodontics. Therefore, the studies not included in these databases were not considered for analysis. Moreover, other limitations regard study terminology and concepts, considering that some studies may have been excluded from analysis because they use different terms to characterize dentinal microcracks or evaluate cracks, mainly in terms of fracture. In addition, this study showed the scientific trend only between 2010 and 2020.
| Conclusion|| |
This bibliometric study revealed that although new endodontic techniques and systems have been developed, they have not led to a greater number of studies focusing on dentinal microcrack formation between 2010 and 2020. Most of the studies were conducted in Turkey, India, and Brazil, and were published in the Journal of Endodontics. Publication in journals with a higher impact factor led to a higher number of citations, but the citation numbers were not affected by funding. In terms of experimental design, a relevant number of published articles did not consider the inclusion of control groups or baseline evaluation to identify the microcracks existing before initiating endodontic procedures, a factor that should be considered in future studies. Moreover, although micro-CT has been considered the best method to evaluate microcracks, some studies used other microscopic techniques. This overview provides important information on the pattern and trend of publications evaluating dentinal microcracks after endodontic procedures and highlights the important parameters that should be considered by future studies to elucidate this topic and guide clinical practice safely. The authors suggest that further studies be conducted to elucidate the relationship between endodontic procedures and microcrack formation.
The authors deny any conflicts of interest related to this study.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
| References|| |
Soares CJ, Rodrigues MP, Faria-E-Silva AL, Santos-Filho PC, Veríssimo C, Kim HC, et al.
How biomechanics can affect the endodontic treated teeth and their restorative procedures? Braz Oral Res 2018;32:e76.
Estrela C, Holland R, Estrela CR, Alencar AH, Sousa-Neto MD, Pécora JD. Characterization of successful root canal treatment. Braz Dent J 2014;25:3-11.
Patel S, Arias A, Whitworth J, Mannocci F. Outcome of endodontic treatment – The elephant in the room. Int Endod J 2020;53:291-7.
Çapar ID, Arslan H. A review of instrumentation kinematics of engine-driven nickel-titanium instruments. Int Endod J 2016;49:119-35.
Valle AD, Dotto L, Morgental RD, Pereira-Cenci T, Pereira GK, Sarkis-Onofre R. Influence of root canal preparation on formation of dentinal microcracks: A systematic review. Braz Dent J 2020;31:201-20.
Soares CJ, Santana FR, Silva NR, Preira JC, Pereira CA. Influence of the endodontic treatment on mechanical properties of root dentin. J Endod 2007;33:603-6.
Rippe MP, Santini MF, Bier CA, Baldissara P, Valandro LF. Effect of root canal preparation, type of endodontic post and mechanical cycling on root fracture strength. J Appl Oral Sci 2014;22:165-73.
Yoldas O, Yilmaz S, Atakan G, Kuden C, Kasan Z. Dentinal microcrack formation during root canal preparations by different NiTi rotary instruments and the self-adjusting file. J Endod 2012;38:232-5.
Pedullà E, Genovesi F, Rapisarda S, La Rosa GR, Grande NM, Plotino G, et al.
Effects of 6 single-file systems on dentinal crack formation. J Endod 2017;43:456-61.
Jamleh A, Komabayashi T, Ebihara A, Nassar M, Watanabe S, Yoshioka T, et al.
Root surface strain during canal shaping and its influence on apical microcrack development: A preliminary investigation. Int Endod J 2015;48:1103-11.
Jamleh A, Mansour A, Taqi D, Moussa H, Tamimi F. Microcomputed tomography assessment of microcracks following temporary filling placement. Clin Oral Investig 2020;24:1387-93.
Wilcox LR, Roskelley C, Sutton T. The relationship of root canal enlargement to finger-spreader induced vertical root fracture. J Endod 1997;23:533-4.
Kesim B, Sagsen B, Aslan T. Evaluation of dentinal defects during root canal preparation using thermomechanically processed nickel-titanium files. Eur J Dent 2017;11:157-61.
] [Full text]
de Oliveira BP, Câmara AC, Duarte DA, Heck RJ, Antonino AC, Aguiar CM. Micro-computed tomographic analysis of apical microcracks before and after root canal preparation by hand, rotary, and reciprocating instruments at different working lengths. J Endod 2017;43:1143-7.
Aksoy Ç, Keriş EY, Yaman SD, Ocak M, Geneci F, Çelik HH. Evaluation of XP-endo shaper, reciproc blue, and protaper universal niti systems on dentinal microcrack formation using micro-computed tomography. J Endod 2019;45:338-42.
De-Deus G, César de Azevedo Carvalhal J, Belladonna FG, Silva EJ, Lopes RT, Moreira Filho RE, et al.
Dentinal microcrack development after canal preparation: A longitudinal in situ
micro-computed tomography study using a cadaver model. J Endod 2017;43:1553-8.
De-Deus G, Cavalcante DM, Belladonna FG, Carvalhal J, Souza EM, Lopes RT, et al.
Root dentinal microcracks: A post-extraction experimental phenomenon? Int Endod J 2019;52:857-65.
Braun A, Hagelauer FJ, Wenzler J, Heimer M, Frankenberger R, Stein S. Microcrack analysis of dental hard tissue after root canal irradiation with a 970-nm diode laser. Photomed Laser Surg 2018;36:621-8.
PradeepKumar AR, Shemesh H, Archana D, Versiani MA, Sousa-Neto MD, Leoni GB, et al.
Root canal preparation does not induce dentinal microcracks in vivo
. J Endod 2019;45:1258-64.
Fráter M, Jakab A, Braunitzer G, Tóth Z, Nagy K. The potential effect of instrumentation with different nickel titanium rotary systems on dentinal crack formation – An in vitro
study. PLoS One 2020;15:e0238790.
Vieira ML, Dantas HV, de Sousa FB, Salazar-Silva JR, Silva EJ, Batista AU, et al.
Morphologic changes of apical foramen and microcrack formation after foraminal enlargement: A scanning electron microscopic and micro-computed tomographic analysis. J Endod 2020;46:1726-32.
Cartes-Velásquez R, Manterola Delgado C. Bibliometric analysis of articles published in ISI dental journals, 2007-2011. Scientometrics 2014;98:2223-33.
Linnenluecke MK, Marrone M, Singh AK. Conducting systematic literature reviews and bibliometric analyses. Aust J Manag 2020;45:175-94.
Poorni S, Ramachandran S, Rooban T, Kumar PM. Contributions of Indian conservative dentists and endodontists to the Medline database during 1996-2009: A bibliometric analysis. J Conserv Dent 2010;13:169-72.
] [Full text]
Baskurt OK. Time series analysis of publication counts of a university: What are the implications? Scientometrics 2011;15:67-80.
Liu R, Hou BX, Wesselink PR, Wu MK, Shemesh H. The incidence of root microcracks caused by 3 different single-file systems versus the ProTaper system. J Endod 2013;39:1054-6.
De-Deus G, Silva EJ, Marins J, Souza E, Neves Ade A, Gonçalves Belladonna F, et al.
Lack of causal relationship between dentinal microcracks and root canal preparation with reciprocation systems. J Endod 2014;40:1447-50.
Arias A, Lee YH, Peters CI, Gluskin AH, Peters OA. Comparison of 2 canal preparation techniques in the induction of microcracks: A pilot study with cadaver mandibles. J Endod 2014;40:982-5.
Ashwinkumar V, Krithikadatta J, Surendran S, Velmurugan N. Effect of reciprocating file motion on microcrack formation in root canals: An SEM study. Int Endod J 2014;47:622-7.
Aydin U, Aksoy F, Karataslioglu E, Yildirim C. Effect of ethylenediaminetetraacetic acid gel on the incidence of dentinal cracks caused by three novel nickel-titanium systems. Aust Endod J 2015;41:104-10.
Çiçek E, Koçak MM, Sağlam BC, Koçak S. Evaluation of microcrack formation in root canals after instrumentation with different NiTi rotary file systems: A scanning electron microscopy study. Scanning 2015;37:49-53.
Kansal R, Rajput A, Talwar S, Roongta R, Verma M. Assessment of dentinal damage during canal preparation using reciprocating and rotary files. J Endod 2014;40:1443-6.
Priya NT, Chandrasekhar V, Anita S, Tummala M, Raj TB, Badami V, et al.
“Dentinal microcracks after root canal preparation” a comparative evaluation with hand, rotary and reciprocating instrumentation. J Clin Diagn Res 2014;8:C70-2.
Li SH, Lu Y, Song D, Zhou X, Zheng QH, Gao Y, et al.
Occurrence of dentinal microcracks in severely curved root canals with ProTaper universal, waveone, and ProTaper next file systems. J Endod 2015;41:1875-9.
Ceyhanli KT, Erdilek N, Tatar I, Celik D. Comparison of ProTaper, RaCe and Safesider instruments in the induction of dentinal microcracks: A micro-CT study. Int Endod J 2016;49:684-9.
Ustun Y, Aslan T, Sagsen B, Kesim B. The effects of different nickel-titanium instruments on dentinal microcrack formations during root canal preparation. Eur J Dent 2015;9:41-6.
] [Full text]
Pop I, Manoharan A, Zanini F, Tromba G, Patel S, Foschi F. Synchrotron light-based μCT to analyse the presence of dentinal microcracks post-rotary and reciprocating NiTi instrumentation. Clin Oral Investig 2015;19:11-6.
Caballero H, Rivera F, Salas H. Scanning electron microscopy of superficial defects in twisted files and reciproc nickel-titanium files after use in extracted molars. Int Endod J 2015;48:229-35.
Gergi RM, Osta NE, Naaman AS. Dentinal crack formation during root canal preparations by the twisted file adaptive, reciproc and waveone instruments. Eur J Dent 2015;9:508-12.
] [Full text]
Miguéns-Vila R, Martín-Biedma B, Varela-Patiño P, Ruíz-Piñón M, Castelo-Baz P. Vertical root fracture initiation in curved roots after root canal preparation: A dentinal micro-crack analysis with LED transillumination. J Clin Exp Dent 2017;9:e1218-23.
Bahrami P, Scott R, Galicia JC, Arias A, Peters OA. Detecting dentinal microcracks using different preparation techniques: An in situ
study with cadaver mandibles. J Endod 2017;43:2070-3.
Bayram HM, Bayram E, Ocak M, Uygun AD, Celik HH. Effect of ProTaper gold, self-adjusting file, and XP-endo shaper instruments on dentinal microcrack formation: A micro-computed tomographic study. J Endod 2017;43:1166-9.
De-Deus G, Belladonna FG, Silva EJ, Souza EM, Carvalhal JC, Perez R, et al.
Micro-CT assessment of dentinal micro-cracks after root canal filling procedures. Int Endod J 2017;50:895-901.
Bayram HM, Bayram E, Ocak M, Uzuner MB, Geneci F, Celik HH. Micro-computed tomographic evaluation of dentinal microcrack formation after using new heat-treated nickel-titanium systems. J Endod 2017;43:1736-9.
Saha SG, Vijaywargiya N, Saxena D, Saha MK, Bharadwaj A, Dubey S. Evaluation of the incidence of microcracks caused by Mtwo and ProTaper Next rotary file systems versus the self-adjusting file: A scanning electron microscopic study. J Conserv Dent 2017;20:355-9.
] [Full text]
Zuolo ML, De-Deus G, Belladonna FG, Silva EJ, Lopes RT, Souza EM, et al.
Micro-computed tomography assessment of dentinal micro-cracks after root canal preparation with TRUShape and self-adjusting file systems. J Endod 2017;43:619-22.
Koçak MM, Çırakoğlu NY, Koçak S, Sağlam BC, Çiçek E, Türker SA, et al.
Effect of retreatment instruments on microcrack formation: A microcomputed tomography study. Int J Artif Organs 2017;40:123-7.
Kfir A, Elkes D, Pawar A, Weissman A, Tsesis I. Incidence of microcracks in maxillary first premolars after instrumentation with three different mechanized file systems: A comparative ex vivo
study. Clin Oral Investig 2017;21:405-11.
Bucchi C, Gimeno-Sandig A, Manzanares-Céspedes C. Enlargement of the apical foramen of mature teeth by instrumentation and apicoectomy. A study of effectiveness and the formation of dentinal cracks. Acta Odontol Scand 2017;75:488-95.
Jain A, Nikhil V, Bansal P. Effect of root canal preparation, obturation, and retreatment on the induction of dentinal microcracks: A microcomputed tomography study. J Conserv Dent 2018;21:521-5.
] [Full text]
Li ML, Liao WL, Cai HX. A micro-computed tomographic evaluation of dentinal microcrack alterations during root canal preparation using single-file Ni-Ti systems. Exp Ther Med 2018;15:494-9.
Langaliya AK, Kothari AK, Surti NR, Patel AR, Doshi PR, Pandya DJ. In vitro
comparative evaluation of dentinal microcracks formation during root canal preparation by different nickel-titanium file systems. Saudi Endod J 2018;8:183-8. [Full text]
John ER, Kadaikal B, Manocha S, Rao S, Ballal NV. Evaluation of micro crack propagation in root canal dentin after the use of Reciproc and Waveone Gold Rotary systems. Int J Clin Dent 2018;11:201-8.
Çapar İD, Gök T, Uysal B, Keleş A. Comparison of microcomputed tomography, cone beam tomography, stereomicroscopy, and scanning electron microscopy techniques for detection of microcracks on root dentin and effect of different apical sizes on microcrack formation. Microsc Res Tech 2019;82:1748-55.
Rödig T, Krämer J, Müller C, Wiegand A, Haupt F, Rizk M. Incidence of microcracks after preparation of straight and curved root canals with three different NiTi instrumentation techniques assessed by micro-CT. Aust Endod J 2019;45:394-9.
Uğur Aydın Z, Keskin NB, Özyürek T. Effect of Reciproc blue, XP-endo shaper, and WaveOne gold instruments on dentinal microcrack formation: A micro-computed tomographic evaluation. Microsc Res Tech 2019;82:856-60.
Sachdeva N, Nikhil V, Jha P. Effect of ultrasonic root-end cavity preparation on dentinal microcrack formation: A micro-computed tomography study. J Conserv Dent 2019;22:362-6.
] [Full text]
Katanec T, Miletić I, Baršić G. Incidence of dentinal micro cracks during root canal preparation with self adjusting file, Reciproc Blue, and ProTaper Next. Iran Endod J 2020;15:6-11.
Almeida A, Romeiro K, Cassimiro M, Gominho L, Dantas E, Silva S, et al.
Micro-CT analysis of dentinal microcracks on root canals filled with a bioceramic sealer and retreated with reciprocating instruments. Sci Rep 2020;10:15264.
Alkahtany SM, Al-Madi EM. Dentinal microcrack formation after root canal instrumentation by XP-Endo Shaper and ProTaper universal: A microcomputed tomography evaluation. Int J Dent 2020;2020:1-6.
Garcia MN, Tiano JP, Contreras O, Hildebolt CF, Horsford J, Stewart D. Trends in academic dentistry and oral health research funding by gender. JDR Clin Trans Res 2020;5:176-84.
Tarazona B, Vidal-Infer A, Alonso-Arroyo A. Bibliometric analysis of the scientific production in implantology (2009-2013). Clin Oral Implants Res 2017;28:864-70.
Ruiz-Saenz J, Martinez-Gutierrez M. Virology research in a Latin American developing country: A bibliometric analysis of virology in Colombia (2000-2013). J Infect Dev Ctries 2015;9:1226-37.
Krishnan A, Saini A, Sharma S, Kumar V, Chawla A, Logani A. India's contribution to regenerative endodontics: A bibliometric analysis. J Conserv Dent 2020;23:325-9. [Full text]
Tonelli SQ, Antunes MA, Soares de Toubes KM, Miranda AC, Pereira AM, Nunes E, et al.
Dentinal microcracks induced by endodontic procedures: Suggested design for experimental studies using micro-computed tomography and strain gauges. J Endod 2021;47:1157-65.
Pithon MM. Importance of the control group in scientific research. Dental Press J Orthod 2013;18:13-4.
Adnan S, Ullah R. Top-cited articles in regenerative endodontics: A bibliometric analysis. J Endod 2018;44:1650-64.
Keleş A, Alcin H, Kamalak A, Versiani MA. Oval-shaped canal retreatment with self-adjusting file: A micro-computed tomography study. Clin Oral Investig 2014;18:1147-53.
Singh V, Nikhil V, Bansal P. Induction of dentinal microcracks during postspace preparation: A comparative microcomputed tomography study. J Conserv Dent 2018;21:646-50.
] [Full text]
Das S, Pradhan PK, Lata S, Sinha SP. Comparative evaluation of dentinal crack formation after root canal preparation using ProTaper Next, OneShape, and Hyflex EDM. J Conserv Dent 2018;21:153-6.
] [Full text]
Guha A, Pandharikar R, Shivangi S, Rao RD, Verma M, Jain AK. Comparative evaluation of dentinal crack formation after root canal preparation with Neoendo Flex and Mani Silk files: An in vitro
study. J Conserv Dent 2020;23:468-72. [Full text]
Dr. Frank Ferreira Silveira
Department of Dentistry, Pontifical Catholic University of Minas Gerais, Avenida Dom José Gaspar, 500 - Prédio 46, Coração Eucarístico, 30535-610 - Belo Horizonte, MG
Source of Support: None, Conflict of Interest: None
[Figure 1], [Figure 2], [Figure 3]
[Table 1], [Table 2]