Restorative Dentistry & Endodontics最新文献_第8页

Stress distribution of restorations in external cervical root resorption under occlusal and traumatic loads: a finite element analysis. 牙合和创伤载荷下颈外根吸收修复体的应力分布：有限元分析。

Restorative Dentistry & Endodontics Pub Date : 2025-05-01 Epub Date: 2025-05-21 DOI: 10.5395/rde.2025.50.e21

Padmapriya Ramanujam, Paul Kevin Abishek Karthikeyan, Vignesh Srinivasan, Selvakarthikeyan Ulaganathan, Velmurugan Natanasabapathy, Nandini Suresh

{"title":"Stress distribution of restorations in external cervical root resorption under occlusal and traumatic loads: a finite element analysis.","authors":"Padmapriya Ramanujam, Paul Kevin Abishek Karthikeyan, Vignesh Srinivasan, Selvakarthikeyan Ulaganathan, Velmurugan Natanasabapathy, Nandini Suresh","doi":"10.5395/rde.2025.50.e21","DOIUrl":"10.5395/rde.2025.50.e21","url":null,"abstract":"Objectives: This study analyzed the stress distribution in a maxillary central incisor with external cervical resorptive defect restored with different restorative materials under normal masticatory and traumatic loading conditions using finite element analysis.Methods: Cone-beam computed tomography of an extracted intact incisor and created resorptive models (Patel's 3D classification-2Bd and 2Bp) in the maxillary central incisor was performed for finite element models. The 2Bd models were restored either with glass ionomer cement (GIC)/Biodentine (Septodont) or a combination of both with composite resin. 2Bp models were restored externally with a combination technique and internally with root canal treatment. The other model was external restoration with GIC and internal with fiber post. Two masticatory loads were applied at 45˚ to the palatal aspect, and two traumatic loads were applied at 90˚ to the buccal aspect. Maximum von Mises stresses were calculated, and stress distribution patterns were studied.Results: In 2Bd models, all restorative strategies decreased stress considerably, similar to the control model under all loads. In 2Bp models, the dentin component showed maximum stress at the deepest portion of the resorptive defect, which transfers into the adjacent pulp space. In 2Bp defects, a multilayered restoration externally and root canal treatment internally provides better stress distribution compared to the placement of a fiber post.Conclusions: Increase in load, proportionally increased von Mises stress, despite the direction or angulation of the load. Multilayered restoration is preferred for 2Bd defects, and using an internal approach of root canal treatment is suggested to restore 2Bp defects.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":"50 2","pages":"e21"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12151762/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144267212","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}

引用次数: 0

Impact of the use of high-power 810-nm diode laser as monotherapy on the clinical and tomographic success of the treatment of teeth with periapical lesions: an observational clinical study. 高功率810纳米二极管激光单药治疗对牙齿根尖周病变临床和断层扫描成功率的影响：一项观察性临床研究。

Restorative Dentistry & Endodontics Pub Date : 2025-05-01 Epub Date: 2025-05-15 DOI: 10.5395/rde.2025.50.e15

Fabricio Hinojosa Pedraza, Abel Victor Isidro Teves-Cordova, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte

{"title":"Impact of the use of high-power 810-nm diode laser as monotherapy on the clinical and tomographic success of the treatment of teeth with periapical lesions: an observational clinical study.","authors":"Fabricio Hinojosa Pedraza, Abel Victor Isidro Teves-Cordova, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte","doi":"10.5395/rde.2025.50.e15","DOIUrl":"10.5395/rde.2025.50.e15","url":null,"abstract":"Objectives: The aim of this study was to demonstrate the impact of a high-power 810-nm diode laser as monotherapy on the clinical and tomographic success of treating teeth with periapical lesions, through a series of 31 cases.Methods: Teeth with apical lesions underwent endodontic treatment in which a high-power 810-nm diode laser with saline solution was used as monotherapy for disinfection. This type of therapy aimed to replace the traditional irrigation protocol with sodium hypochlorite. This research is the first to assess the clinical success of this alternative treatment, along with tomographic evaluations conducted over periods ranging from 2 to 7 years, analyzed using the periapical index based on cone-beam computed tomography (CBCTPAI). All cases were performed by a single clinician following the same laser protocol, which involved using 1 W of continuous power and four cycles of 20 seconds of laser activation.Results: All teeth showed no clinical symptoms upon follow-up examination. However, the tomographic evaluation revealed that the success rates for teeth receiving primary treatment were 60% and 80% according to strict and loose criteria, respectively. For teeth requiring retreatment, the success rates were 12.5% and 37.5% using strict and loose criteria, respectively.Conclusions: The teeth with apical lesions that underwent primary treatment did not present clinical symptoms, but they showed a moderate success rate on tomographic evaluation. However, despite lacking clinical symptoms, teeth with apical lesions that required retreatment had a very low success rate on tomographic evaluation.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":"50 2","pages":"e15"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12151763/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144267211","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}

引用次数: 0

Impact of post adhesion on stress distribution: an in silico study. 后粘接对应力分布的影响：一项硅片研究。

Restorative Dentistry & Endodontics Pub Date : 2025-05-01 Epub Date: 2025-05-21 DOI: 10.5395/rde.2025.50.e19

Kkot-Byeol Bae, Jae-Yoon Choi, Young-Tae Cho, Bin-Na Lee, Hoon-Sang Chang, Yun-Chan Hwang, Won-Mann Oh, In-Nam Hwang

{"title":"Impact of post adhesion on stress distribution: an in silico study.","authors":"Kkot-Byeol Bae, Jae-Yoon Choi, Young-Tae Cho, Bin-Na Lee, Hoon-Sang Chang, Yun-Chan Hwang, Won-Mann Oh, In-Nam Hwang","doi":"10.5395/rde.2025.50.e19","DOIUrl":"10.5395/rde.2025.50.e19","url":null,"abstract":"Objectives: This study aimed to evaluate the stress distribution in teeth restored with different post materials and bonding conditions using finite element analysis (FEA).Methods: A two-dimensional FEA model of a maxillary central incisor restored with IPS-Empress-2 crown (Ivoclar Vivadent), composite resin core, and posts were created. The model simulated bonded and non-bonded conditions for both fiber-reinforced composite (FRC) and titanium (Ti) posts. Stress distribution was analyzed using ANSYS 14.0 software under a 100-N load applied at a 45° angle to the long axis of the tooth.Results: The results revealed that stress concentration was significantly higher in non-bonded posts compared to bonded ones. FRC posts exhibited stress values closer to those of dentin, whereas Ti posts demonstrated higher stress concentration, particularly in non-bonded states, increasing the potential risk of damage to surrounding tissues.Conclusions: FRC posts, with elastic properties similar to dentin and proper adhesion, minimize stress concentration and potential damage to surrounding tissues. Conversely, materials with higher elastic modulus like Ti, can cause unfavorable stress concentrations if not properly bonded, emphasizing the importance of post adhesion in tooth restoration.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":"50 2","pages":"e19"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12151760/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144267210","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}

引用次数: 0

Effect of surface treatment on glass ionomers in sandwich restorations: a systematic review and meta-analysis of laboratory studies. 夹层修复中表面处理对玻璃离聚体的影响：实验室研究的系统回顾和荟萃分析。

Restorative Dentistry & Endodontics Pub Date : 2025-05-01 Epub Date: 2025-04-16 DOI: 10.5395/rde.2025.50.e13

Hoda S Ismail, Ashraf Ibrahim Ali, Franklin Garcia-Godoy

{"title":"Effect of surface treatment on glass ionomers in sandwich restorations: a systematic review and meta-analysis of laboratory studies.","authors":"Hoda S Ismail, Ashraf Ibrahim Ali, Franklin Garcia-Godoy","doi":"10.5395/rde.2025.50.e13","DOIUrl":"10.5395/rde.2025.50.e13","url":null,"abstract":"Objectives: This study aimed to evaluate the effect of different surface treatments on the bond strength between new or aged glass ionomers (GI) and resin composites in sandwich restorations.Methods: A comprehensive search was conducted in three databases to identify studies focusing on the bond strength of new or aged GIs and resin composites in laboratory settings. The selected studies were assessed for potential biases based on predetermined criteria. Additionally, a meta-analysis was performed using three studies.Results: A total of 29 studies were included, with 24 investigating the bond strength of new GIs and five focusing on GI repair. Three studies were included in the meta-analysis (with a 95% confidence interval) which revealed no significant difference in the mean MPa values of resin-modified glass ionomer (RMGI) treated with phosphoric acid or Er,Cr:YSGG laser before the application of an etch-and-rinse adhesive. Surface treatment was found to be crucial for achieving optimal bonding between GI and resin composite, regardless of the GI's condition.Conclusions: The combination of mechanical and chemical surface treatments does not significantly affect the bond strength between new RMGI and composite. However, for GI repair, it is recommended to use both treatments to enhance the bond strength.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":" ","pages":"e13"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12151766/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144043095","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}

引用次数: 0

Bibliometric analysis of the GentleWave system: trends, collaborations, and research gaps. 文献计量学分析的绅士波系统：趋势，合作，和研究差距。

Restorative Dentistry & Endodontics Pub Date : 2025-05-01 Epub Date: 2025-05-12 DOI: 10.5395/rde.2025.50.e17

Raimundo Sales de Oliveira Neto, Thais de Moraes Souza, João Vitor Oliveira de Amorim, Thaine Oliveira Lima, Guilherme Ferreira da Silva, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte

{"title":"Bibliometric analysis of the GentleWave system: trends, collaborations, and research gaps.","authors":"Raimundo Sales de Oliveira Neto, Thais de Moraes Souza, João Vitor Oliveira de Amorim, Thaine Oliveira Lima, Guilherme Ferreira da Silva, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte","doi":"10.5395/rde.2025.50.e17","DOIUrl":"10.5395/rde.2025.50.e17","url":null,"abstract":"Objectives: The study aimed to conduct a bibliometric analysis of the GentleWave system (Sonendo, Inc.).Methods: An electronic search was conducted in June 2024 using the Web of Science Collection database. Two reviewers independently screened publications, extracting data on authorship, publication details, study design, and citation metrics. Statistical analyses were performed in R to assess variable correlations, while the VOSviewer (Visualization of Similarities Viewer) software was used to map author and keyword networks.Results: The search yielded 47 records, with 32 studies included. Publications spanned 2014 to 2024. The Journal of Endodontics published the highest number of studies (n = 15), and the International Endodontic Journal had the highest impact factor (5.4). The University of British Columbia and Sonendo, Inc. were the most frequent affiliations. Among the 32 articles, 28 were in vitro studies, primarily focusing on microbiology (n = 9). A total of 95 authors were identified, with Haapasalo and Shen being the most cited (n = 229). The articles accumulated 495 citations, demonstrating a strong positive correlation between the number of studies and citation counts (r = 0.98).Conclusions: The analysis highlights a predominance of in vitro studies. Geographic concentration in the United States and Canada limits diversity, while the strong correlation between study numbers and citations suggests that increased publication volume enhances visibility.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":" ","pages":"e17"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12151759/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144021762","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}

引用次数: 0

An unusual case of dens invaginatus on a mandibular second molar: a case report. 下颌第二磨牙凹牙畸形1例。

Restorative Dentistry & Endodontics Pub Date : 2025-02-01 Epub Date: 2025-01-08 DOI: 10.5395/rde.2025.50.e2

Davide Mancino, Dina Abdellatif, Alfredo Iandolo, Fabien Bornert, Youssef Haïkel

引用次数: 0

Success rates comparison of endodontic microsurgery and single implants with comprehensive and explicit criteria: a systematic review and meta-analysis. 综合明确标准的根管显微手术和单种植成功率比较：系统回顾和荟萃分析。

Restorative Dentistry & Endodontics Pub Date : 2025-02-01 Epub Date: 2025-02-19 DOI: 10.5395/rde.2025.50.e8

Min Jung Ko, Ju Hyun Park, Na Rae Lee, Joon-Ho Yoon, Young-Taek Kim, Sin-Yeon Cho

{"title":"Success rates comparison of endodontic microsurgery and single implants with comprehensive and explicit criteria: a systematic review and meta-analysis.","authors":"Min Jung Ko, Ju Hyun Park, Na Rae Lee, Joon-Ho Yoon, Young-Taek Kim, Sin-Yeon Cho","doi":"10.5395/rde.2025.50.e8","DOIUrl":"10.5395/rde.2025.50.e8","url":null,"abstract":"Objectives: While the success criteria of endodontic microsurgery (EMS) have been consistently defined and widely accepted, the success criteria of dental implants are outdated and focus only on the implant fixture and surrounding bone. This study aimed to evaluate the outcomes of EMS and single implants (SIs) with explicit criteria.Methods: We searched for articles published from January 2010 to February 2022 and discussed them and consulted with a clinical advisory committee composed of four dental specialists and one epidemiologist during article selection and data extraction.Results: Twenty-two EMS studies and six SI studies were included in the meta-analysis. Teeth treated using EMS had a pooled success rate of 89% (90% at <5-year follow-up and 80% at ≥5-year follow-up) and the pooled success rate of SI was 78%.Conclusions: The success rates of the two procedures with similar follow-up periods were comparable. Subgroup analysis found no other variable that significantly influenced study heterogeneity. Considering the treatment sequence and the similar success rates, it would be advantageous to consider EMS, rather than implants, first in a situation where both procedures are applicable.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":" ","pages":"e8"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11921458/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143469062","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}

引用次数: 0

Concentrated growth factor scaffold-based pulpotomy of permanent molars with symptomatic irreversible pulpitis. 以浓缩生长因子支架为基础的恒磨牙切开术治疗症状性不可逆牙髓炎。

Restorative Dentistry & Endodontics Pub Date : 2025-02-01 Epub Date: 2025-01-17 DOI: 10.5395/rde.2025.50.e1

Arthi K Harith, Vishnupriya Koteeswaran, Dinesh Kowsky, Natanasabapathy Velmurugan, Suresh Nandini

{"title":"Concentrated growth factor scaffold-based pulpotomy of permanent molars with symptomatic irreversible pulpitis.","authors":"Arthi K Harith, Vishnupriya Koteeswaran, Dinesh Kowsky, Natanasabapathy Velmurugan, Suresh Nandini","doi":"10.5395/rde.2025.50.e1","DOIUrl":"10.5395/rde.2025.50.e1","url":null,"abstract":"Objectives: : Pulpotomy is a minimally invasive procedure that aims to retain the vitality of the radicular pulp by removing the inflamed coronal pulp tissue. This case series presents the successful management of symptomatic irreversible pulpitis by pulpotomy with concentrated growth factor (CGF) scaffolds.Methods: Six permanent mandibular molars with a diagnosis of symptomatic irreversible pulpitis were included. Under Local anesthesia and rubber dam isolation, caries were excavated using high-speed bur under coolant. Full coronal pulpotomy was done and hemostasis was achieved. CGF membrane was prepared and placed over the radicular pulp and layered with Biodentine (Septodont). Final restoration of type IX glass ionomer cement and bulk fill composite resin was placed. Patients were assessed for various clinical and radiographic parameters at intervals of 1 week and 3, 6, and 12 months. Five patients fulfilled the success criteria at the end of 1 year.Results: Pulpotomy is considered an alternative treatment modality for root canal treatment in symptomatic irreversible pulpitis aiming at alleviating symptoms and maintaining vitality. CGF scaffold when used as a capping material acts as a reservoir for growth factors with anti-inflammatory properties and enhances healing.Conclusions: Scaffold-based pulpotomy can be considered a biological approach to healing inflamed pulp.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":" ","pages":"e1"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11921459/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468997","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}

引用次数: 0

Pattern of endodontic instrument separation and factors affecting its retrieval: a 10-year retrospective observational study in a postgraduate institute. 根管器械分离模式及影响其回收的因素：一项研究生院10年回顾性观察研究。

Restorative Dentistry & Endodontics Pub Date : 2025-02-01 Epub Date: 2025-02-19 DOI: 10.5395/rde.2025.50.e7

Velmurugan Natanasabapathy, Aswathi Varghese, Paul Kevin Abishek Karthikeyan, Srinivasan Narasimhan

{"title":"Pattern of endodontic instrument separation and factors affecting its retrieval: a 10-year retrospective observational study in a postgraduate institute.","authors":"Velmurugan Natanasabapathy, Aswathi Varghese, Paul Kevin Abishek Karthikeyan, Srinivasan Narasimhan","doi":"10.5395/rde.2025.50.e7","DOIUrl":"10.5395/rde.2025.50.e7","url":null,"abstract":"Objectives: This study aimed to assess the pattern of endodontic instrument separation, their retrievability, and factors affecting its retrieval, in a postgraduate institute.Methods: Cases referred for the management of separated endodontic instruments (SEI) from 2013 to 2023 were considered for this study. Data related to demographics, tooth type, file type, and retrieval were documented in an Excel sheet. Eight prognostic factors assumed to influence the retrieval were analyzed in this study. The secondary aim was to compare the pattern of SEI and retrievability between conventional nickel-titanium files and newer generation heat-treated nickel-titanium files. Retrieval was attempted by a senior endodontist under the dental operating microscope. Various ultrasonic tips and a Broken Tool Removal loop system were used during retrieval. Simple descriptive statistics were performed. Binomial logistic regression was done to identify the effect of the eight prognostic factors on the retrieval outcome.Results: A total of 190 SEI was reported. SEI occurred more often in posterior teeth than anterior teeth, mandibular arch than maxillary arch, and in larger files than smaller files. Separation occurred more often in the apical third compared to the other levels. Retrieval was attempted in 88 cases and successful in 70 cases (79.5%). The larger taper and apical position of the SEI negatively influenced the retrieval by 1.4 and 8.7 times, respectively.Conclusions: Retrieval of SEI was successful in the majority of the cases. An increase in taper and apically placed SEI negatively impacted the retrieval. There was no difference in the pattern of separation nor retrievability between conventional nickel-titanium files and newer generation heat-treated nickel-titanium files.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":" ","pages":"e7"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11921455/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143469059","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}

引用次数: 0

Shaping ability and cyclic fatigue resistance between Genius ProFlex, ZenFlex, and TruNatomy rotary systems: an experimental study. Genius ProFlex、ZenFlex和TruNatomy旋转系统的成形能力和抗循环疲劳性能：一项实验研究。

Restorative Dentistry & Endodontics Pub Date : 2025-02-01 Epub Date: 2025-02-13 DOI: 10.5395/rde.2025.50.e9

Raimundo Sales de Oliveira Neto, Murilo Priori Alcalde, Pedro Cesar Gomes Titato, Pedro Henrique Souza Calefi, Carlos Alberto Spironelli Ramos, Guilherme Ferreira da Silva, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte

{"title":"Shaping ability and cyclic fatigue resistance between Genius ProFlex, ZenFlex, and TruNatomy rotary systems: an experimental study.","authors":"Raimundo Sales de Oliveira Neto, Murilo Priori Alcalde, Pedro Cesar Gomes Titato, Pedro Henrique Souza Calefi, Carlos Alberto Spironelli Ramos, Guilherme Ferreira da Silva, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte","doi":"10.5395/rde.2025.50.e9","DOIUrl":"10.5395/rde.2025.50.e9","url":null,"abstract":"Objectives: The aim of this study was to investigate the efficacy of three newly introduced rotary endodontic systems: Genius ProFlex (Medidenta), TruNatomy (Dentsply Maillefer), and ZenFlex (Kerr).Methods: Forty-five mandibular molars with root canal curvatures <5° were utilized. Micro-computed tomography scans were performed pre- and post-preparation to assess apical transportation, centralization, percentage of dentin wear, and canal volume alterations. Eight instruments of each diameter underwent cyclic fatigue testing.Results: The percentage of dentin wear on mesial and distal walls showed no significant differences among ZenFlex, TruNatomy, and Genius ProFlex at 1, 2, 3, and 4 mm from the apical foramen and root canal orifice (p > 0.05). Centering ability varied in the mesiolingual canal (p < 0.05). No notable differences were observed in transportation (p > 0.05). Genius ProFlex demonstrated lower volumetric changes (p < 0.05). There were significant differences in cyclic fatigue, with higher values for Genius ProFlex and lower values for TruNatomy (p < 0.05).Conclusions: The three nickel-titanium rotary instruments are safe and efficient for root canal preparation, with Genius ProFlex exhibiting superior cyclic fatigue resistance.","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":" ","pages":"e9"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11921461/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143469061","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}

引用次数: 0