Australian Endodontic Journal最新文献_第9页

Finite element study of the fatigue behaviour of nickel-titanium endodontic files utilised with pecking motion technique 基于啄动技术的镍钛根管锉疲劳性能有限元研究。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-23 DOI: 10.1111/aej.12813

Eyüp Can Kökan PhD Candidate, Yasin Atik MSc, Şebnem Özüpek PhD, Evgeny Podnos PhD, Raif Erişen PhD

{"title":"Finite element study of the fatigue behaviour of nickel-titanium endodontic files utilised with pecking motion technique","authors":"Eyüp Can Kökan PhD Candidate, Yasin Atik MSc, Şebnem Özüpek PhD, Evgeny Podnos PhD, Raif Erişen PhD","doi":"10.1111/aej.12813","DOIUrl":"10.1111/aej.12813","url":null,"abstract":"The purpose of the study is to evaluate the influence of the pecking motion (reciprocal axial motion) surgical technique on the durability behaviour of the Nickel-Titanium endodontic files using Finite Element Analysis (FEA). A commonly used endodontic file, ProTaper Universal F2, is selected for the study. Root canal treatment procedure is simulated on a test-bench (simulated root canal) proposed by G. Gambarini for cyclic fatigue loading of endodontic files with and without the pecking motion via FEA. The hysteresis energy density is used as evaluation criteria for low cycle fatigue life estimation of Shape Memory Alloy files. In an additional study, the root canal treatment procedure is also simulated for an FEA model of a molar tooth with significant root canal curvature to understand the influence of the realistic curvature of a root canal on the fatigue behaviour of endodontic files. For the simulated root canal, analysis accurately predicts the endodontic file's failure location, and fatigue life estimation based on the hysteresis energy density is shown to increase significantly with the introduction of the pecking motion, an observation confirmed by reported experimental results. Molar tooth simulations reveal greater file fatigue resistance than in simulated root canals, confirming the pecking motion's efficacy in enhancing file durability, even in real root canal conditions. Simulations indicate that the pecking motion technique increases the fatigue life of endodontic files for simulated as well as real root canals and the hysteresis energy is confirmed as an acceptable parameter to quantify fatigue life of Nickel-Titanium endodontic files.","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 1","pages":"97-109"},"PeriodicalIF":1.6,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138296648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ASE NSW 244th General Meeting and Third Lecture of 2023 ASE NSW第244次会员大会暨2023年第三次讲座。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-23 DOI: 10.1111/aej.12811

Atieh Sadr DDS, MS

引用次数: 0

Six-year clinical evaluation of iRoot BP Plus as apical barrier in permanent teeth of periapical periodontitis iRoot BP Plus作为根尖周炎恒牙根尖屏障的6年临床评价。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-22 DOI: 10.1111/aej.12815

Lijun Wang MS, Shuangshuang Ren PhD, Xiujuan Sun MS, Shiliang Guo MS

引用次数: 0

APEC report 亚太经合组织报告。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-16 DOI: 10.1111/aej.12818

Sanjay Miglani MDS, PhD

引用次数: 0

Unusual imaging appearance of cemental tear in the maxillary first molar on cone-beam computed tomography: A case report 上颌第一磨牙骨质撕裂的锥束ct异常表现1例。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-14 DOI: 10.1111/aej.12810

Chiaki Kuwada DDS,PhD, Takeshi Kikuchi DDS,PhD, Akiko Kato DDS,PhD, Munetaka Naitoh DDS,PhD, Yoshitaka Kise DDS,PhD, Akio Mitani DDS,PhD, Masaki Honda DDS,PhD, Eiichiro Ariji DDS,PhD

引用次数: 0

Assessment of the biointeractivity of a novel vital pulp therapy agent derived from eggshell biowaste: An in vitro study 一种从蛋壳生物废料中提取的新型生命髓质治疗剂的生物相互作用评价:体外研究。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-14 DOI: 10.1111/aej.12809

Merve Aksoy MSc, Nurgül Karadaş Bakirhan PhD, Çiğdem Yücel PhD, Demet Atak MSc, Kübra Gülnur Topsakal MSc, Cenkhan Bal MSc

{"title":"Assessment of the biointeractivity of a novel vital pulp therapy agent derived from eggshell biowaste: An in vitro study","authors":"Merve Aksoy MSc, Nurgül Karadaş Bakirhan PhD, Çiğdem Yücel PhD, Demet Atak MSc, Kübra Gülnur Topsakal MSc, Cenkhan Bal MSc","doi":"10.1111/aej.12809","DOIUrl":"10.1111/aej.12809","url":null,"abstract":"This study aimed to assess the calcium (Ca2+) and hydroxyl (OH−) ion-releasing ability, namely the biointeractivity of eggshell-derived hydroxyapatite (ESDHA) in comparison with mineral trioxide aggregate (MTA) and calcium hydroxide (CH). ESDHA, MTA and CH samples (n = 10; 8 × 1.6 mm) were immersed in 10 mL of deionised water (37°C, pH 6.8). Ca2+ and OH− ion releases were detected in 1, 7 and 21 days. Scanning electron microscopy and Fourier transform infrared spectroscopy analyses were also conducted. IBM SPSS 20.0 was used for statistical analyses. The cumulative Ca2+ ions (56.22 ± 11.28 ppm) were detected as most significant in ESDHA (day 21; p < 0.05). The OH− ion values of the ESDHA group were statistically higher than MTA and CH (days 1 and 7; p < 0.05). ESDHA and CH showed a similar pattern with sharp peaks in Ca2+, oxygen and carbon elements. ESDHA being a sustainable material with a high ion-releasing ability may be a preferable alternative to the commercial vital pulp therapy agents.","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 1","pages":"78-88"},"PeriodicalIF":1.6,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

President report 总统报告。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-14 DOI: 10.1111/aej.12819

Gus Jang

引用次数: 0

Effect of different apical actions of new integrated endodontic motors on apical debris extrusion: An in vitro study 新型集成根管马达不同根尖作用对根尖碎片挤压的影响:体外研究。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-14 DOI: 10.1111/aej.12814

Yağmur Kılıç DDS, Mustafa Mert Tulgar DDS, Emrah Karataşlıoğlu DDS, PhD

引用次数: 0

Efficacy of calcium hydroxide-loaded poly(lactic-co-glycolic acid) biodegradable nanoparticles as an intracanal medicament against endodontopathogenic microorganisms in a multi-species biofilm model 在多物种生物膜模型中，负载氢氧化钙的聚（乳酸-乙醇酸）可生物降解纳米颗粒作为管内药物对抗内胚层致病微生物的功效。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-11-10 DOI: 10.1111/aej.12812

Warat Leelapornpisid DDS, Piyaporn Wanwatanakul DDS, Thanisorn Mahatnirunkul BSc, MSc, PhD

{"title":"Efficacy of calcium hydroxide-loaded poly(lactic-co-glycolic acid) biodegradable nanoparticles as an intracanal medicament against endodontopathogenic microorganisms in a multi-species biofilm model","authors":"Warat Leelapornpisid DDS, Piyaporn Wanwatanakul DDS, Thanisorn Mahatnirunkul BSc, MSc, PhD","doi":"10.1111/aej.12812","DOIUrl":"10.1111/aej.12812","url":null,"abstract":"This study aimed to evaluate the antimicrobial activity of calcium hydroxide-loaded poly(lactic-co-glycolic acid) nanoparticles (CH-loaded PLGA NPs) on multi-species biofilms. Human root blocks were prepared (n = 40), and multi-species suspensions of Candida albicans, Enterococcus faecalis and Streptococcus gordonii were incubated within the root canals for 21 days. Canals (n = 10/group) were then medicated with saline solution (negative control), chlorhexidine (positive control), calcium hydroxide and CH-loaded PLGA NPs for 7 days. Samples taken from the 0.1 mm root canal dentin were collected, and cell growth was detected by culture on BHI agar. The viable cell count of the Ca(OH)2, chlorhexidine gel and CH-loaded PLGA NPs group was significantly lower than the normal saline group (p < 0.001). CH-loaded PLGA NPs demonstrated a significant lower viable cell than Ca(OH)2 (p < 0.001); it has potential as a medicament for endodontic therapy.","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 1","pages":"89-96"},"PeriodicalIF":1.6,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72016288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence and anatomic associations of middle mesial canals and isthmi in mandibular first molars: A CBCT-based study in a Northern Chinese population 下颌第一磨牙近中根管和峡部的患病率和解剖相关性：一项基于CBCT的中国北方人群研究。

IF 1.6 4区医学

Australian Endodontic Journal Pub Date : 2023-10-30 DOI: 10.1111/aej.12807

Jiaojiao Liu MD, DDS, Xiangyu Zhao MM, Ying Liu MM, Nannan Dong MB, Xiaodong Zhang MD, DDS

{"title":"Prevalence and anatomic associations of middle mesial canals and isthmi in mandibular first molars: A CBCT-based study in a Northern Chinese population","authors":"Jiaojiao Liu MD, DDS, Xiangyu Zhao MM, Ying Liu MM, Nannan Dong MB, Xiaodong Zhang MD, DDS","doi":"10.1111/aej.12807","DOIUrl":"10.1111/aej.12807","url":null,"abstract":"This study investigated the prevalence of the middle mesial canal (MMC) and isthmus in a northern Chinese subpopulation using cone-beam computed tomography (CBCT). CBCT images of 1060 mandibular first molars (MFMs) were analysed. Data analysis was performed using the chi-square test, t-test, and multiple logistic regression analysis (p < 0.05). The prevalence of MMC and isthmus was 15.2% and 40.6%, respectively. The average dentinal thickness in the danger zone was 1.61 ± 0.14 mm. Patients younger than 40 years were two times more likely to have MMC (odds ratio [OR] = 2.204). Additionally, for every 1 mm reduction in the MB-ML orifice distance, the likelihood of detection of MMC in MFM nearly doubled (OR = 1.738). Furthermore, MFMs with MB-ML isthmus were five times more likely to exhibit MMC than those without it (OR = 4.756). The findings revealed that the prevalence of MMC and isthmus in MFMs is high and suggested that anatomical and demographic variables can serve as valuable indicators for clinicians in anticipating their presence.","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 1","pages":"69-77"},"PeriodicalIF":1.6,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71415455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0