Y Ölçer Us, A Aydınoğlu, Ş Erşahan, Y Erdem Hepşenoğlu, K Sağır, A Üşümez
{"title":"A comparison of the effects of incremental and snowplow techniques on the mechanical properties of composite restorations","authors":"Y Ölçer Us, A Aydınoğlu, Ş Erşahan, Y Erdem Hepşenoğlu, K Sağır, A Üşümez","doi":"10.1111/adj.12982","DOIUrl":"10.1111/adj.12982","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Glass fibre-reinforced composite (GFRC) has the potential to enhance the mechanical properties of resin-based restorations. Nevertheless, the application technique can influence the cervical margin porosity, potentially reducing the mechanical strength of restorations.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In an <i>in vitro</i> setup, mould specimens underwent six different treatments to assess the effects of snowplow and incremental curing techniques on the properties of GFRC (EverX) and universal resin composite (Filtek). Mechanical properties, namely flexural strength (FS), compressive strength (CS) and Vickers hardness (VH), were evaluated following ISO 4049 standards. Data interpretation utilized the Kruskal–Wallis tests.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>No significant difference emerged across groups for FS. CS in the snowplow method with lesser EverX thickness (SnPl_1) was comparable with only EverX and Filtek (<i>P</i> > 0.05). The CS was reduced in the snowplow technique with greater EverX thickness (SnPl_2) (<i>P</i> < 0.05) and further decreased with the incremental method (<i>P</i> < 0.001). VH results showed that EverX Posterior was consistently softer than Filtek, with specific patterns of hardness variations among different application methods.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Applying EverX and Filtek using the snowplow technique delivers superior CS and VH for restorations in contrast to the incremental method. Utilizing the snowplow approach in high-stress areas can make restorations more fracture-resistant.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"69 1","pages":"40-48"},"PeriodicalIF":2.1,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41181936","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}
P Kongyodsueb, S Poolthong, S Chumprasert, P Sae-ear, Y Tantilertanant
{"title":"The effect of silver nanoparticles in addition to sodium fluoride on remineralization of artificial root dentin caries","authors":"P Kongyodsueb, S Poolthong, S Chumprasert, P Sae-ear, Y Tantilertanant","doi":"10.1111/adj.12985","DOIUrl":"10.1111/adj.12985","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Silver nanoparticle was developed to overcome the drawback of silver diamine fluoride. However, evidence is limited, especially in root caries. The aim of this study was to evaluate the remineralization effect of silver nanoparticles on root caries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Fifty-five root human dentin slices size 5 × 5 mm<sup>2</sup> from patients aged over 60 years old were immersed in demineralized solution to create artificial caries. Specimens were allocated into five groups according to the remineralizing agents: silver diamine fluoride (SDF), silver nanoparticles solution (AgNPs), silver nanoparticle solution followed by sodium fluoride varnish (AgNPs+NaF), sodium fluoride varnish (NaF), and tap water. After 8 days of pH-cycling challenge, the microhardness test, lesion depth evaluation, dentin surface morphology, and elemental analysis were performed. Data was analysed using <i>F</i>-test One-way ANOVA followed by Tukey's post hoc test and paired <i>T</i>-test.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>All test groups demonstrated a significantly higher microhardness value and lower lesion depth compared with the control group. AgNPs+NaF and NaF-treated groups showed lower efficacy than SDF. Crystal precipitation was presented in all groups composed of silver.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Addition of fluoride varnish did not benefit for silver nanoparticles in preventing further demineralization. SDF provides the highest effectiveness in elderly root carious dentin.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"69 1","pages":"56-66"},"PeriodicalIF":2.1,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41181937","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":"Clinical and medico-legal considerations in endodontics","authors":"M Johnstone, M Evans","doi":"10.1111/adj.12984","DOIUrl":"10.1111/adj.12984","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Endodontic treatment can be challenging for a number of reasons, including the microscopic nature of the clinical environment, reliance on tactile sensation and lack of direct visualization of the work being performed. Commonly, endodontic patients present with pain and distress, which can exacerbate an already difficult clinical situation. Complications may might arise prior to, or during treatment, despite practising with the utmost care and skill. Preventing and managing these complications can take considerable time and energy, and oftentimes assistance from or referral to more experienced colleagues is required. The aim of this review is to discuss medico-legal considerations in endodontics, with clinical correlations and a focus on the Australian legal landscape. [Correction added on 18 October 2023, after first online publication: The abstract was amended from a structured to an unstructured abstract.]</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"68 S1","pages":"S153-S164"},"PeriodicalIF":2.1,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adj.12984","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41107078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
LT Friedlander, WDA Wallace, JM Broadbent, SM. Hanlin, KM Lyons, RD Cannon, PR Cooper
{"title":"Preparedness and competency of New Zealand graduates for general dental practice – perceptions from the workforce","authors":"LT Friedlander, WDA Wallace, JM Broadbent, SM. Hanlin, KM Lyons, RD Cannon, PR Cooper","doi":"10.1111/adj.12981","DOIUrl":"10.1111/adj.12981","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Dental graduates need to demonstrate clinical competency. This mixed-methods study explored the perceptions of clinicians who employ or work with new graduates from the University of Otago, New Zealand, and identified themes reflecting graduates’ preparedness for independent practice.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>An online survey using a semantic differential scale and open-ended questions collected opinions and experiences from the workforce. Quantitative data were analysed using SPSS software, and qualitative data were analysed thematically.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>A representative sample of the workforce was obtained with a response rate of 35% (N = 83). Most clinicians engage new graduates to support the profession and/or rural communities. They perceived that graduates were well prepared in most areas, could translate theory to clinical practice and demonstrate professionalism. Graduates were reportedly stronger in basic dentistry, communication, ethics, and record keeping however were less strong in complex treatment planning, molar endodontics, fixed prosthodontics and exodontia. Clinical exposure during dental training was perceived as more limited, and mentoring and guidance in the transition to practice were deemed to be important.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>New Zealand dental graduates appear prepared for independent practice; however, maximising clinical opportunities during training, mentoring and early professional development in advanced areas of practice is essential to enhance competency and confidence.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"69 1","pages":"29-39"},"PeriodicalIF":2.1,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/adj.12981","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41109384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}