Roberta Salles de Bastos DDS, Thamires Vidal da Silva DDS, Victor Talarico Leal Vieira DDS, MSc, PhD, Emmanuel João Nogueira Leal Silva DDS, MSc, PhD
{"title":"Evaluation of mechanical properties of an original and a replica-like reciprocating instruments","authors":"Roberta Salles de Bastos DDS, Thamires Vidal da Silva DDS, Victor Talarico Leal Vieira DDS, MSc, PhD, Emmanuel João Nogueira Leal Silva DDS, MSc, PhD","doi":"10.1111/aej.12854","DOIUrl":"10.1111/aej.12854","url":null,"abstract":"<p>This study assessed the mechanical properties of the Only One File Blue and the Reciproc Blue instruments. A total of 80 new 25 mm reciprocating NiTi instruments (25/.08v) were evaluated for their mechanical performance (<i>n</i> = 40 per group). Cyclic fatigue resistance, torsional fatigue, flexural resistance and buckling resistance tests were conducted. Statistical analysis was employed with a significance level set at 5%. The results indicated no statistically significant differences in resistance to cyclic fatigue neither in the fragment length between the instruments (<i>p</i> > 0.05). However, the Reciproc Blue instrument exhibited greater torque to fracture and a larger rotation angle than the Only One File Blue instrument (<i>p</i> < 0.05). The Only One File Blue instrument demonstrated higher flexibility but lower resistance to buckling compared to the Reciproc Blue instrument (<i>p</i> < 0.05). In conclusion, the tested instruments exhibit differences in mechanical properties, with the Reciproc Blue instrument generally presenting greater advantages than the Only One File Blue.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 3","pages":"486-492"},"PeriodicalIF":1.3,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140923414","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}
Cleonice da Silveira Teixeira DDS, MSc, PhD, Filipe Colombo Vitali DDS, MSc, PhD, Eduardo Antunes Bortoluzzi DDS, MSc, PhD, Lucas da Fonseca Roberti Garcia DDS, MSc, PhD
{"title":"Longer light-curing time decreases the effect of ageing on composite resin hardness used in root reinforcement","authors":"Cleonice da Silveira Teixeira DDS, MSc, PhD, Filipe Colombo Vitali DDS, MSc, PhD, Eduardo Antunes Bortoluzzi DDS, MSc, PhD, Lucas da Fonseca Roberti Garcia DDS, MSc, PhD","doi":"10.1111/aej.12856","DOIUrl":"10.1111/aej.12856","url":null,"abstract":"<p>This study evaluated the hardness of a composite resin used for root reinforcement, considering the light-curing time, root canal region and ageing due to long-term storage. Twenty incisor roots were reinforced using composite resin, varying the photopolymerisation time (40 or 120 s). Following fibre post cementation, the roots were transversely sectioned into coronal, middle and apical regions. Composite hardness was measured initially and after 18 months of water storage. Data underwent repeated measures analysis of variance and Tukey's post hoc tests. The factors ‘light-curing time’, ‘root region’ and ‘ageing’ affected the hardness. Significant interactions were observed between ‘light-curing time × root region’ and ‘ageing × light-curing time’. Regardless of time, resin hardness in the apical region was lower. After ageing, hardness in the coronal and middle regions decreased when the light-curing time was 40 s, while no significant effect on hardness was noted with a light-curing time of 120 s.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 3","pages":"493-501"},"PeriodicalIF":1.3,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140923420","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}
Ana Flávia Almeida Barbosa DDS, MSc, PhD, Emmanuel João Nogueira Leal Silva DDS, MSc, PhD, Marco Aurélio Versiani DDS, MSc, PhD, Carolina Oliveira Lima DDS, MSc, PhD, Letícia de Almeida Pereira Reis Oliveira DDS, Graziela dos Santos Massa DDS, MSc, Thayná Cristine da Silva Eustáquio DDS, MSc, Ricardo Tadeu Lopes PhD, Luciana Moura Sassone DDS, MSc, PhD
{"title":"Effects of increasing instrument size and taper on the disinfection and shaping of mandibular incisors","authors":"Ana Flávia Almeida Barbosa DDS, MSc, PhD, Emmanuel João Nogueira Leal Silva DDS, MSc, PhD, Marco Aurélio Versiani DDS, MSc, PhD, Carolina Oliveira Lima DDS, MSc, PhD, Letícia de Almeida Pereira Reis Oliveira DDS, Graziela dos Santos Massa DDS, MSc, Thayná Cristine da Silva Eustáquio DDS, MSc, Ricardo Tadeu Lopes PhD, Luciana Moura Sassone DDS, MSc, PhD","doi":"10.1111/aej.12851","DOIUrl":"10.1111/aej.12851","url":null,"abstract":"<p>This study assessed canal preparation effects on disinfection and dentin preservation. Thirty mandibular incisors were paired into two experimental groups (<i>n</i> = 10). Following contamination, the initial microbial sample was collected. Instruments 30/0.03 (Group 1) and 30/0.05 (Group 2) were employed and a second sample was obtained. Canals were enlarged using instruments 40/0.03 and 40/0.05, respectively, and a third sample was collected. Final irrigation was performed, and sample S4 obtained. A final scan evaluated volume, surface area, unprepared areas, removed dentin and dentin thickness. Data were analysed using Student <i>t</i>-test, Mann–Whitney, Kruskal–Wallis and Dunn tests. A significant difference was observed between S1 and other time points (<i>p</i> < 0.05). Comparison between groups showed no differences in bacterial loads and in the percentage of microbial reduction (<i>p</i> > 0.05). Group 2 exhibited greater reduction in dentin thickness than group 1 in the mesial aspect of the root (<i>p</i> < 0.05). Instrument 30/0.03 might provide effective disinfection and safety during mandibular incisors canal preparation.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 2","pages":"341-351"},"PeriodicalIF":1.3,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140877985","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}
Maximiliano Casa-Herzmann, Horacio Álvarez, Nicole Soto-Valencia, Emmanuel J. N. L. Silva
{"title":"Pre-eruptive intracoronal resorption: A report of two cases treated with Biodentine in mandibular premolars","authors":"Maximiliano Casa-Herzmann, Horacio Álvarez, Nicole Soto-Valencia, Emmanuel J. N. L. Silva","doi":"10.1111/aej.12853","DOIUrl":"10.1111/aej.12853","url":null,"abstract":"<p>Pre-eruptive intracoronal resorption is a rare dental anomaly marked by a radiolucent area within an unerupted tooth. This report discusses the clinical management of pre-eruptive intracoronal resorption in two mandibular premolars through vital pulp therapy using Biodentine as a sealant. Emphasising the significance of timely intervention for preserving pulp vitality and the tooth's integrity, the present case report underscores the necessity of vigilant clinical and radiographic monitoring for early detection and appropriate treatment. By presenting effective strategies for managing pre-eruptive intracoronal resorption, the report contributes to the understanding of this condition and highlights the importance of proactive measures in preserving affected teeth and ensuring favourable long-term outcomes.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 3","pages":"667-673"},"PeriodicalIF":1.3,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140839847","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}
{"title":"Micro-computed tomography analysis of shaping ability of nickel–titanium instruments activated by continuous rotation or adaptive motion","authors":"Sevde Nur Ürgüplüoğlu DDS, Levent Akıncı DDS, PhD, Neslihan Şimşek DDS, PhD","doi":"10.1111/aej.12850","DOIUrl":"10.1111/aej.12850","url":null,"abstract":"<p>This study assessed the ability of Twisted File Adaptive (TFA), TruNatomy (TRN) and VDW.Rotate (VR) instruments activated by continuous rotation (CR) and adaptive motion (AM) to shape curved root canals. Thirty mandibular molars with two separate mesial canals 20°–40° curved were collected and scanned using micro-computed tomography (μCT). The canals were then randomly assigned into six groups (<i>n</i> = 10): TRN, VR or TFA instruments activated by CR or AM. TRN groups 17.02, 20.04 and 26.04; VR groups 15.04, 20.05 and 25.06; TFA groups were shaped consecutively using 15K-file, 20.04 and 25.06. After they were shaped, the canals were scanned again. The volume of removed dentin, canal transportation and centring ratio were calculated μCT images. All data were analysed using the Kruskal–Wallis test or one-way analysis of variance (<i>p</i> < 0.05). With both kinematics, the TRN instrument removed the least amount of dentin, the VR-CR and the TFA-AM removed the most (<i>p</i> < 0.05). The transportation and centring ratios among all groups were similar (<i>p</i> > 0.05). The volume of dentin removed, the diameter or design features of the instruments and different kinematics did not affect the centring ratio and the amount of transportation and remained within safe limits. All three instruments activated by either kinematics were found to have similar effectiveness in shaping curved root canals.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 2","pages":"334-340"},"PeriodicalIF":1.3,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140803087","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}
Jia Wang PhD, Chenguang Niu PhD, Pengfei Zhang MD, Shujun Ran PhD, Zhengwei Huang PhD
{"title":"Endodontic management considerations for Type III dens invaginatus based on anatomical characteristics: A case series","authors":"Jia Wang PhD, Chenguang Niu PhD, Pengfei Zhang MD, Shujun Ran PhD, Zhengwei Huang PhD","doi":"10.1111/aej.12847","DOIUrl":"10.1111/aej.12847","url":null,"abstract":"<p>Dens invaginatus (DI) is a developmental anomaly of the teeth characterised by the in-folding of the enamel into the dentin. Oehlers' Type III DI is the most serious form, in which the inherently invaginated channels communicate with periodontal and dental pulp tissue, increasing the risk of bacterial contamination. However, varying and complex anatomical features make diagnosis and treatment challenging. Conventional endodontic therapies promote healing by avoiding unnecessary interventions (e.g., surgical or other invasive treatments). Radiographic examination can reveal the structural details of such malformations. We obtained multiple procedural details for treating Type III DI based on radiographic analyses from our clinical experience. In addition, we introduce a new classification strategy for the management of Type III DI that is more applicable to treatment needs. This study aimed to discuss the anatomical features and current treatment considerations of Type III DI.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 2","pages":"377-387"},"PeriodicalIF":1.3,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140803088","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}
Bruna Venzke Fischer, Luiz Carlos de Lima Dias-Junior, Mariana Comparotto Minamisako, Cristiane Maria Almeida, Luciano Roberto da Silva, Eduardo Antunes Bortoluzzi, Cleonice da Silveira Teixeira, Lucas da Fonseca Roberti Garcia
{"title":"Effect of the timing of primary endodontic treatment and dosage of radiation therapy on the filling material removal","authors":"Bruna Venzke Fischer, Luiz Carlos de Lima Dias-Junior, Mariana Comparotto Minamisako, Cristiane Maria Almeida, Luciano Roberto da Silva, Eduardo Antunes Bortoluzzi, Cleonice da Silveira Teixeira, Lucas da Fonseca Roberti Garcia","doi":"10.1111/aej.12846","DOIUrl":"10.1111/aej.12846","url":null,"abstract":"<p>This study investigated the effect of the timing of primary endodontic treatment and dosage of radiotherapy on the remaining filling material (RFM) during endodontic reintervention. 60 single-rooted human mandibular premolars were distributed into five groups (<i>n</i> = 12), according to the timing and dosage of radiation (55Gy or 70Gy): NegativeCG-non-irradiated teeth; Endo-pre-RT<sub>55/70</sub>-obturation before irradiation (55Gy or 70Gy); Endo-post-RT<sub>55/70</sub>-obturation and reintervention after irradiation (55Gy or 70Gy). Roots were cleaved and analysed under stereomicroscope and Scanning Electron Microscope to quantify (%) the RFM. Experimental groups had a significantly greater amount (<i>p</i> < 0.05) of RFM in the middle and apical thirds than the control group, except for Endo-pre-RT<sub>55</sub> in the middle third (<i>p</i> < 0.0001). The apical third had greater amount of RFM (<i>p</i> < 0.05). Radiation therapy, before and after primary endodontic treatment, increased the amount of RFM, regardless of the dose delivered. When necessary, reintervention preferably must be performed before radiation therapy.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 2","pages":"321-333"},"PeriodicalIF":1.3,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140588172","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}
{"title":"Comparative evaluation of full and partial pulpotomy in permanent teeth with irreversible pulpitis: A systematic review and meta-analysis","authors":"Vishal Kumar MDS, Amrita Chawla MDS, Harsh Priya MDS, Akshat Sachdeva MDS, Sidhartha Sharma MDS, Vijay Kumar MDS, Ajay Logani MDS","doi":"10.1111/aej.12844","DOIUrl":"10.1111/aej.12844","url":null,"abstract":"<p>The purpose of this systematic review and meta-analysis is to conduct a comparative evaluation of partial and full pulpotomy techniques in cariously exposed teeth with symptoms indicative of symptomatic irreversible pulpitis. Databases such as PubMed, EMBASE, Cochrane, and Web of Science were searched. Studies evaluating and/or comparing clinical and/or radiographic success of partial and full pulpotomy in teeth diagnosed with irreversible pulpitis with a minimum of 12 months follow-up were included. The risk of bias (ROB) tool was used for the assessment of ROB. A meta-analysis was conducted to compare the healing outcome of partial and full pulpotomy. Three studies fulfilled the inclusion criteria, there was a low risk of bias in each of the five domains. Full pulpotomy had a higher success rate than partial pulpotomy, according to meta-analysis, but the difference was not statistically significant.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 2","pages":"388-396"},"PeriodicalIF":1.3,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140588051","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}
Mariam Ahmed Hossam BDS, Alaa Abdelsalam El Baz BDS, MSc, PhD, Sang Won Kwak DDS, MS, PhD, Hyeon-Cheol Kim DDS, MS, PhD, Mohamed Mohsen Abielhassan BDS, MSc, PhD
{"title":"The effect of ibuprofen sustained release oral premedication on intraoperative and postoperative pain: A randomised clinical trial","authors":"Mariam Ahmed Hossam BDS, Alaa Abdelsalam El Baz BDS, MSc, PhD, Sang Won Kwak DDS, MS, PhD, Hyeon-Cheol Kim DDS, MS, PhD, Mohamed Mohsen Abielhassan BDS, MSc, PhD","doi":"10.1111/aej.12839","DOIUrl":"10.1111/aej.12839","url":null,"abstract":"<p>The aim of this study was to assess the effect of ibuprofen sustained release (SR) oral premedication on the efficacy of buccal infiltration (BI) with intraoperative and postoperative pain after single-visit root canal treatment. Sixty patients diagnosed with symptomatic irreversible pulpitis and apical periodontitis in mandibular molar were divided into two groups. Group SR received ibuprofen SR 800 mg and group PL received placebo capsule 1 h before 3.6 mL articaine BI injection. Pain was recorded using a modified visual analogue scale and postoperatively at intervals 6, 24 and 48 h. Group SR showed a significantly higher anaesthetic success rate (73.3%) compared to group PL (46.7%) (<i>p</i> < 0.05). Intraoperative and postoperative pain was significantly higher in group PL compared to group SR (<i>p</i> < 0.05). Premedication of ibuprofen SR improved the efficacy of primary BI in mandibular molars with symptomatic irreversible pulpitis and decreased postoperative pain at 6 and 48 h.</p>","PeriodicalId":55581,"journal":{"name":"Australian Endodontic Journal","volume":"50 2","pages":"227-236"},"PeriodicalIF":1.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140289744","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}