Dental Research Journal最新文献

{"title":"Evaluation of apical transportation and centering ability of three single-file systems in severely curved canals using micro-computed tomography.","authors":"Seyed Mohsen Hasheminia, Samaneh Soltani, Fateme Mohamadian, Masoud Saatchi, Seyed Mohsen Sadeghi","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>This study aimed to compare the apical transportation and centering ability of One Curve, HyFlex EDM, and EdgeFile X1 in curved mesiobuccal and mesiolingual canals of mandibular first molars.</p><p><strong>Materials and methods: </strong>In this <i>in vitro</i> experimental study, 60 mesiobuccal and mesiolingual canals of the mandibular first molars with a minimum length of 19 mm and 25°-40° curvature were randomly divided into three groups (<i>n</i> = 20) for root canal preparation with One Curve, HyFlex EDM, and EdgeFile X1. After access cavity preparation and confirming the glide path, the baseline micro-computed tomography (micro-CT) scans were obtained, and the root canals were instrumented with the respective systems according to the manufacturers' instructions. Apical transportation and centering ability were assessed at 1, 3, 5, and 7 mm from the apex by comparing pre- and postinstrumentation micro-CT scans. One-way ANOVA, independent <i>t</i>-test, and Duncan's <i>post hoc</i> test were used to statistically compare the groups, and data were analyzed by SPSS version 24 (alpha = 0.05).</p><p><strong>Results: </strong>The three groups were not significantly different regarding apical transportation at 5 and 7 mm from the apex (<i>P</i> > 0.05). At 1 mm level, One Curve caused significantly lower apical transportation; while, at 3 mm level, HyFlex EDM resulted in significantly higher apical transportation (<i>P</i> < 0.05). No significant difference was noted in the centering ability of the three groups at 1, 3, and 5 mm from the apex (<i>P</i> > 0.05). At 7 mm level, EdgeFile X1 showed significantly lower centering ability (<i>P</i> < 0.05).</p><p><strong>Conclusion: </strong>One Curve caused lower canal transportation in the apical third compared with EdgeFile and HyFlex EDM, but no significant difference was noted among the three in the coronal third of the roots.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"12"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929722/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anti-cancer effects of green synthesized gold nanoparticles using leaf extract of <i>Annona muricata</i>. L against squamous cell carcinoma cell line 15 through apoptotic pathway.","authors":"S Jeslin Mary, Veeran Veeravarmal, Prasanth Thankappan, Paramasivam Arumugam, Percy Ida Augustine, R Franklin","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Oral cancer remains one of the most dreadful diseases in developing nations. Currently, there has been a rise in the prevalence of tongue squamous cell carcinoma (SCC), with a poor prognosis. The use of standard treatment approaches against oral cancer patients brings about several side effects. In recent years, nanomedicine has provided a versatile platform for developing new targeted therapeutic modalities. However, safety remains a concern in the synthesis of nanoparticles (NPs). Therefore, the present study aims to synthesize safer phytoconstituent-mediated gold NPs (AuNPs) utilizing leaf extracts of <i>Annona</i> <i>muricata</i>, where the biochemical components of the plant leaf act as the reducing and capping agents in the synthesis of NPs, and to evaluate its anti-cancer activity against SCC.</p><p><strong>Materials and methods: </strong>In this <i>in vitro</i> experimental study, AuNPs were synthesized through an effective, simple, and ecologically sound green synthesis method. After characterization of these synthesized AuNPs, <i>in vitro</i> assays such as 3-(4, 5-dimethylthiazole2-yl)-2, 5-biphenyl tetrazolium bromide, wound healing, and clonogenic assays were carried out to investigate the anti-cancer potential of green synthesized AuNPs in the human tongue SCC cell line (SCC-15), and the possible mechanism of action was evaluated through gene and protein expression analysis of Bax, Bcl-2, and p53 genes. The results were expressed as mean ± standard deviation using Statistical Package for Social Sciences (SPSS) 20.0 software and Student's <i>t</i>-test was performed for experimental data. <i>P</i> ≤0.05 were considered statistically significant.</p><p><strong>Results: </strong>The <i>in vitro</i> assays demonstrated that the synthesized AuNPs are exhibiting anti-cancer activity by apoptosis of SCC-15 cells in a dose-dependent manner. Further, it also revealed a highly significant decrease in anti-apoptotic Bcl-2 gene expression, whereas pro-apoptotic genes p53 and Bax revealed a highly significant increase, which is statistically significant compared to the control (<i>P</i> < 0.05).</p><p><strong>Conclusion: </strong>Our findings demonstrated that the AuNPs synthesized from <i>A.</i> <i>muricata</i> leaf extract could act as a novel anticancer agent, particularly against SCC, after further scrutiny.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"14"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929727/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of coronal sealing of flowable composite, resin-modified glass ionomer, and mineral trioxide aggregate in endodontically treated teeth: An <i>in-vitro</i> study.","authors":"Mahla Tavakoli, Solmaz Araghi, Amirhossein Fathi, Shahriar Jalalian","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Coronal seal is one of the essential factors that affects the success of endodontic treatment and reinforces the apical seal. The intra-orifice barrier is an efficient alternative approach to decrease coronal leakage in endodontically treated teeth and various materials have been used for this purpose. This study aimed to compare the coronal sealing of flowable composite, resin-modified glass ionomer (RMGI), and mineral trioxide aggregate (MTA) in endodontically treated teeth.</p><p><strong>Materials and methods: </strong>In this <i>in vitro</i> study, 35 single-canal canine teeth were divided into five groups, including flowable composite, RMGI, MTA, positive control, and negative control groups. The teeth were filled with restorative materials according to the factory's instructions. Afterward, the samples were immersed in 2% methylene blue dye solution for 1 week at 37°C and 100% humidity condition. Finally, the teeth were sectioned longitudinally and dye penetration was measured using a stereomicroscope with ×10. Data were analyzed with Kolmogorov-Smirnov and Kruskal-Wallis tests (α = 0.05).</p><p><strong>Results: </strong>The positive control group showed the highest amount of dye penetration compared to other groups (12.34 ± 0.46). Dye penetration in the MTA group was significantly lower (4.25 ± 0.31) compared to the RMGI group (5.94 ± 0.24) (<i>P</i> = 0.02). Moreover, while the dye penetration in the MTA group was lower than in the flowable composite group (5.65 ± 0.26), the difference was not statistically significant (<i>P</i> = 0.12).</p><p><strong>Conclusion: </strong>MTA reduces the coronal leakage and provides an acceptable coronal seal in endodontically treated teeth, especially compared to RMGI, and therefore, using MTA as an intra-orifice barrier increases the endodontic treatment success rate.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"13"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929723/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of antimicrobial efficacy of triple antibiotic paste and amoxicillin clavulanate paste as an intracanal medicament against <i>Enterococcus faecalis</i>: An <i>in vitro</i> study.","authors":"Dhandayuthapani Sasikala, Parisa Norouzi Baghkomeh, Jamaluddin Mohammed Farzan","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Triple antibiotic paste (TAP) is the commonly used intracanal medicament against <i>Enterococcus</i> <i>faecalis</i>. Amoxicillin clavulanate paste (ACP) is recommended as a \"fall-back\" antibiotic when traditional dental antibiotics fail. Literature comparing the antimicrobial efficacy of TAP and ACP in eradicating <i>E.</i> <i>faecalis</i> from the root canal system is sparse; hence, this <i>in vitro</i> study was conducted to evaluate and compare the antimicrobial efficacy of TAP and ACP as an intracanal medicament for endodontic treatment of single-rooted permanent teeth against <i>E.</i> <i>faecalis.</i></p><p><strong>Materials and methods: </strong>This <i>in</i> <i>vitro</i>, experimental study evaluated 60 root samples obtained from extracted single-rooted human permanent teeth. The canal diameter was enlarged and subsequently infected with <i>E.</i> <i>faecalis</i> for 21 days. Four groups of the contaminated samples were treated with TAP, ACP, calcium hydroxide (positive control), and saline (negative control), respectively. Dentinal shavings were collected at the end of the 1^st, 7^th, and 10^th day and inoculated in agar plates. The number of colony-forming units was determined, and the data were statistically analyzed using the Kolmogorov-Smirnov and Shapiro-Wilks test. <i>P</i> <0.05 was considered statistically significant.</p><p><strong>Results: </strong>The mean number of <i>E.</i> <i>faecalis</i> colony counts across all 3 test days demonstrated that TAP exhibited the highest inhibition of bacterial growth, followed by ACP which is not statistically significant (<i>P</i> = 1.00).</p><p><strong>Conclusion: </strong>Considering the limitations of this <i>in vitro</i> study, the findings suggest that ACP could be an effective alternative intracanal medicament to TAP for endodontic therapy.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"10"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929719/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of intelligent development (IQ & EQ) of children with cleft lip and palate.","authors":"Rasool Esmaeili Maryan, Masood Feizbakhsh, Zohreh Esmaeilian, Golnoosh Sedaghati","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Attention to the issue of intelligence and its promotion in children with cleft lip and cleft palate (CL and CP) is necessary to reduce their injuries in life. This study aimed to determine the intelligence quotient (IQ) and emotional intelligence (EQ) in children with CL and CP in comparison to healthy children.</p><p><strong>Materials and methods: </strong>In this descriptive study, 140 children, including 70 children with CL and CP, were selected from the Children treated in Craniofacial and Cleft Research Center, Spearman correlation, ANOVA and 70 healthy children were selected from the Pediatric Dentistry Department of Isfahan University, in the age range of 5-9 years. After obtaining the consent of the children's parents, the Raven IQ questionnaire and the Mayer and Salovey EQ questionnaire were given to the children. Data were analyzed by the Pearson correlation coefficient tests (α =0.05).</p><p><strong>Results: </strong>EQ score in healthy children was significantly higher than in children with CL and CP (<i>P</i> < 0.001). The percentage of IQ cognitive intelligence in healthy children and children with CL and CP was not significantly different (<i>P</i> = 0.641). In healthy children, no significant relationship was observed between cognitive intelligence IQ and EQ (<i>r</i> = 0.018, <i>P</i> = 0.882). However, among children with CL and CP, there was a significant inverse relationship between cognitive intelligence IQ and EQ (<i>P</i> < 0.001, <i>r</i> = -0.526).</p><p><strong>Conclusion: </strong>CL and CP have no effect on IQ in children, but it does affect EQ.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"16"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929725/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of 4-META on microtensile bond strength of cements to ceramics.","authors":"Maliheh Nafisifard, Homayoon Alaghehmand, Laleh Soleimani, Faraneh Mokhtarpour","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>This study assessed the effect of different concentrations of 4-methacryloyloxyethy trimellitate anhydride (4-META) added to silane on microtensile bond strength (µTBS) of light-cure and dual-cure resin cement to hybrid and zirconia-reinforced lithium silicate ceramics.</p><p><strong>Materials and methods: </strong>This <i>in vitro</i>, experimental study was conducted on 32 Celtra Duo and 32 VITA Enamic ceramics bonded to Allcem Veneer light-cure and Allcem dual-cure resin cements using silane impregnated with 4-META in 0%, 2.5%, 5%, and 10 wt% concentrations in 16 groups (<i>n</i> = 4). The µTBS of specimens was measured by a universal testing machine and analyzed by the Kruskal-Wallis and Mann-Whitney tests, and the mode of failure was determined under a stereomicroscope and analyzed by the Chi-square test (alpha = 0.05).</p><p><strong>Results: </strong>The lowest mean µTBS was recorded in the Enamic ceramic group with 4-META (0%) bonded to dual-cure cement (14.26 MPa), and the highest mean µTBS was recorded in Enamic ceramic with 4-META (10%) bonded to light-cure cement (18.59 MPa) (<i>P</i> < 0.001). The µTBS of Celtra Duo was significantly higher than that of Enamic in bonding to light-cure cement using 4-META (2.5%) (<i>P</i> = 0.003). All failures (100%) were adhesive in most groups. The frequency of adhesive failure was the lowest (90%) in Celtra Duo bonded to dual-cure cement with 4-META (5%).</p><p><strong>Conclusion: </strong>According to the results of this pilot study, the addition of 4-META (10%) to silane caused a significant improvement in µTBS to light-cure cement. The addition of 4-META in all concentrations significantly improved the µTBS to Enamic ceramic in the use of dual-cure cement; however, it had no significant effect on µTBS of Celtra Duo. Nonetheless, the results should be interpreted with caution due to the relatively small sample size.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"19"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929730/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of polishing versus glazing of CAD-CAM ceramics on wear and surface roughness of opposing composite resin.","authors":"Mina Sadat Khoramian Esfahani, Ghazaleh Ahmadi, Behnaz Esmaeili","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>This study aimed to assess the effect of polishing versus glazing of computer-aided design-computer-aided manufacturing (CAD-CAM) ceramics on depth of wear and surface roughness of opposing composite resin.</p><p><strong>Materials and methods: </strong>This <i>in vitro</i> study was conducted on 40 Z250 composite and 40 CAD-CAM ceramic specimens including Celtra Duo, Vita Mark II, e.max CAD, and Vita Suprinity ceramics. All ceramic specimens were roughened by a fine-grit bur after primary glazing to simulate an adjusted surface in the clinical setting. They were then randomly assigned to two subgroups and underwent reglazing or polishing. All composite and ceramic specimens underwent profilometry after surface treatment and prior to the wear test, and the results were recorded quantitatively. Composite specimens were then subjected to 120,000 wear cycles against ceramic specimens in a chewing simulator, and the depth of wear was measured by a scanner. Data were statistically analyzed by repeated measures two-way analysis of variance (ANOVA) and one-way ANOVA (α = 0.05).</p><p><strong>Results: </strong>Comparison of the surface roughness of composite specimens before and after the wear test revealed significant differences in both glazed Suprinity (<i>P</i> = 0.048) and Vita Mark II (<i>P</i> = 0.026) ceramics groups. The change in surface roughness after the wear test (compared with baseline) was significant in glazed (<i>P</i> = 0.000) and polished (<i>P</i> = 0.013) Vita Mark II and polished Suprinity (<i>P</i> = 0.037) ceramics, but this change was not significant in other ceramics (<i>P</i> > 0.05). The depth of wear after the wear test was not significantly different among the ceramic and composite subgroups (<i>P</i> > 0.05).</p><p><strong>Conclusion: </strong>Assessment of depth of wear and surface roughness of composite specimens showed that the polishing kits of CAD-CAM ceramics can serve as a suitable alternative to reglazing.</p>","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"21 ","pages":"18"},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10929728/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140109542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship between periodontal disease and obstructive sleep apnea in adults: A systematic review","authors":"Edoardo Bianchi, M. Segù, A. Toffoli, Geremia Razzini, G. Macaluso, Edoardo Manfredi","doi":"10.4103/drj.drj_568_22","DOIUrl":"https://doi.org/10.4103/drj.drj_568_22","url":null,"abstract":"The purpose of this systematic review was to evaluate whether there are scientific evidence regarding the association between periodontitis and obstructive sleep apnea (OSA) in adults. An electronic search was performed on MEDLINE/PubMed for prospective and retrospective longitudinal studies, cohort studies, and case–control studies conducted in human adults affected by both OSA and periodontitis. Two reviewers extracted the data using a custom Excel spreadsheet. A methodological assessment of the quality of the studies was performed using the Newcastle–Ottawa Scale. Fourteen studies were included. All studies evaluated the association between periodontitis and OSA. None of the studies evaluated the cause–effect relationship. Eleven studies found a significant positive relationship between periodontitis and OSA, whereas three found no statistically significant association. Several study limitations were observed, such as lack of standardization of study groups, diagnosis of periodontitis and OSA, and differences in study design. Evidence of a plausible association between periodontitis and OSA was found. The possible relationship could be explained by systemic inflammation, oral breathing, and the comorbid relationship attributable to common risk factors. Observational and randomized controlled studies are needed to clarify the mechanism of interaction between the two conditions.","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"24 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of antimicrobial efficacy of triple antibiotic paste and amoxicillin clavulanate paste as an intracanal medicament against Enterococcus faecalis: An in vitro study","authors":"Dhandayuthapani Sasikala, P. Baghkomeh, J. M. Farzan","doi":"10.4103/drj.drj_144_23","DOIUrl":"https://doi.org/10.4103/drj.drj_144_23","url":null,"abstract":"Background: Triple antibiotic paste (TAP) is the commonly used intracanal medicament against Enterococcus faecalis. Amoxicillin clavulanate paste (ACP) is recommended as a “fall-back” antibiotic when traditional dental antibiotics fail. Literature comparing the antimicrobial efficacy of TAP and ACP in eradicating E. faecalis from the root canal system is sparse; hence, this in vitro study was conducted to evaluate and compare the antimicrobial efficacy of TAP and ACP as an intracanal medicament for endodontic treatment of single-rooted permanent teeth against E. faecalis. Materials and Methods: This in vitro, experimental study evaluated 60 root samples obtained from extracted single-rooted human permanent teeth. The canal diameter was enlarged and subsequently infected with E. faecalis for 21 days. Four groups of the contaminated samples were treated with TAP, ACP, calcium hydroxide (positive control), and saline (negative control), respectively. Dentinal shavings were collected at the end of the 1st, 7th, and 10th day and inoculated in agar plates. The number of colony-forming units was determined, and the data were statistically analyzed using the Kolmogorov–Smirnov and Shapiro–Wilks test. P <0.05 was considered statistically significant. Results: The mean number of E. faecalis colony counts across all 3 test days demonstrated that TAP exhibited the highest inhibition of bacterial growth, followed by ACP which is not statistically significant (P = 1.00). Conclusion: Considering the limitations of this in vitro study, the findings suggest that ACP could be an effective alternative intracanal medicament to TAP for endodontic therapy.","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"3 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140464131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of apical transportation and centering ability of three single-file systems in severely curved canals using micro-computed tomography","authors":"S. Hasheminia, S. Soltani, Fateme Mohamadian, M. Saatchi, Seyed Mohsen Sadeghi","doi":"10.4103/drj.drj_270_23","DOIUrl":"https://doi.org/10.4103/drj.drj_270_23","url":null,"abstract":"Background: This study aimed to compare the apical transportation and centering ability of One Curve, HyFlex EDM, and EdgeFile X1 in curved mesiobuccal and mesiolingual canals of mandibular first molars. Materials and Methods: In this in vitro experimental study, 60 mesiobuccal and mesiolingual canals of the mandibular first molars with a minimum length of 19 mm and 25°–40° curvature were randomly divided into three groups (n = 20) for root canal preparation with One Curve, HyFlex EDM, and EdgeFile X1. After access cavity preparation and confirming the glide path, the baseline micro-computed tomography (micro-CT) scans were obtained, and the root canals were instrumented with the respective systems according to the manufacturers’ instructions. Apical transportation and centering ability were assessed at 1, 3, 5, and 7 mm from the apex by comparing pre- and postinstrumentation micro-CT scans. One-way ANOVA, independent t-test, and Duncan's post hoc test were used to statistically compare the groups, and data were analyzed by SPSS version 24 (alpha = 0.05). Results: The three groups were not significantly different regarding apical transportation at 5 and 7 mm from the apex (P > 0.05). At 1 mm level, One Curve caused significantly lower apical transportation; while, at 3 mm level, HyFlex EDM resulted in significantly higher apical transportation (P < 0.05). No significant difference was noted in the centering ability of the three groups at 1, 3, and 5 mm from the apex (P > 0.05). At 7 mm level, EdgeFile X1 showed significantly lower centering ability (P < 0.05). Conclusion: One Curve caused lower canal transportation in the apical third compared with EdgeFile and HyFlex EDM, but no significant difference was noted among the three in the coronal third of the roots.","PeriodicalId":11016,"journal":{"name":"Dental Research Journal","volume":"66 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}