Australian dental journal最新文献

{"title":"Marginal and Internal Fit, Surface Roughness and Fracture Resistance of Hybrid Dental Crown Materials Fabricated With Milling and 3D-Printing Systems: An In Vitro Study.","authors":"Abdullah M Al-Rifai, Ahed Al-Wahadni, Abedelmalek Tabanjah","doi":"10.1111/adj.70052","DOIUrl":"https://doi.org/10.1111/adj.70052","url":null,"abstract":"<p><strong>Background: </strong>This study evaluated the marginal and internal fit, surface roughness and fracture resistance of three hybrid crown materials fabricated using milling and 3D-printing.</p><p><strong>Methods: </strong>A maxillary premolar typodont tooth was prepared and scanned to produce 30 cobalt-chromium dies through selective laser melting 3D printing. Thirty crowns were fabricated from two milled materials (Vita Enamic; Cerasmart) and one printed material (Irix Max) (n = 10). Marginal and internal fit were assessed using a three-dimensional superimposition technique, while surface roughness was measured with an optical profilometer. After cementation, specimens underwent thermocycling for 3600 cycles, followed by 720,000 mechanical loading cycles. Fracture resistance was tested using a universal testing machine and failure modes were recorded. Statistical analysis was performed using one-way ANOVA test.</p><p><strong>Results: </strong>No statistically significant differences were observed in marginal fit among the groups. Cerasmart showed significantly higher internal gaps but smoother surfaces than Vita Enamic and Irix Max. Vita Enamic exhibited significantly greater fracture resistance compared to Cerasmart. All failures were catastrophic.</p><p><strong>Conclusion: </strong>All crowns exhibited comparable marginal fit. Cerasmart demonstrated smoother surfaces but inferior internal adaptation and fracture strength, whereas Vita Enamic provided superior mechanical performance.</p>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147832849","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":"The Australian and New Zealand Dental Implant Registry: Regulatory Requirements and Registry Development.","authors":"S Soukoulis, S Davis, A Goss","doi":"10.1111/adj.70048","DOIUrl":"https://doi.org/10.1111/adj.70048","url":null,"abstract":"<p><strong>Background: </strong>The Therapeutic Goods Administration is responsible for the Regulation of manufacture and supply of all medical devices including dental implants. Medically, the patient is given a 'Patient Implant Card' (PIC). It is recommended to monitor the performance of devices in an implant registry.</p><p><strong>Methods: </strong>The TGA Regulations were reviewed. The detailed methodology to establish a National Dental Implant Registry is presented and initial analysis performed.</p><p><strong>Results: </strong>The placement of dental implants in Australia is not as regulated as other comparable medical devices. Currently the Registry has 43 clinics with 44 participating dental practitioners. The DIR has recorded dental implant related information from 4842 patients with 9429 devices (Australian and New Zealand data). Patients were usually over 60 years of age, more female and more implants were placed in the maxilla. The Australian replacement rate of dental implants was 1.83% and 1.42% for prostheses.</p><p><strong>Conclusions: </strong>Improving the regulatory framework by introducing the issuing of Patient implant cards (PICs) so the specific device information type is transferable and retained long term and establishment of long-term independent monitoring in a Dental Implant Registry, crucial in identifying problems with the aim of improving outcomes for patients and dental professionals should be considered.</p>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147621574","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":"Patterns of Surgical Prophylaxis Prescribing for Dentoalveolar Procedures in Australian Hospitals: 2016-2022.","authors":"Jane Chen, Marietta Taylor, Rodney James, Karin Thursky, Michael McCullough, Leanne Teoh, Courtney Ierano","doi":"10.1111/adj.70047","DOIUrl":"https://doi.org/10.1111/adj.70047","url":null,"abstract":"<p><strong>Background: </strong>Antimicrobials are an adjunctive therapy in clinical dentistry. In dentoalveolar surgery, antimicrobials are not routinely required for surgical prophylaxis. This retrospective analysis of the Australian Surgical National Antimicrobial Prescribing Survey (Surgical NAPS) dataset aimed to evaluate the guideline compliance and appropriateness of antimicrobial prescribing for dentoalveolar procedures in Australian hospitals.</p><p><strong>Methodology: </strong>Deidentified Surgical NAPS data for dentoalveolar procedures (tooth extractions and implant placements) between 2016 and 2022 were extracted. Procedures outside the scope of a general dentist were excluded. Prescribed antimicrobials for surgical prophylaxis, including procedural prophylaxis doses and post-procedural prescriptions, were assessed for guideline compliance and appropriateness according to the Surgical NAPS algorithm.</p><p><strong>Results: </strong>1345 surgical episodes with dental procedures were included. This comprised 1077 procedural prophylaxis doses and 555 post-procedural prescriptions. Of the post-procedural prescriptions, 478 (86%) were for prophylaxis. Guideline compliance was demonstrated in 35.3% of procedural doses and 14.6% of post-procedural prescriptions. Rates of appropriateness were 33.5% for procedural doses and 12.6% for post-procedural prescriptions. Most procedural doses and post-procedural prescriptions were deemed inappropriate as they were not required (72.5% and 93.0%, respectively).</p><p><strong>Conclusions: </strong>Suboptimal guideline compliance and appropriateness of antibiotic prescribing for dentoalveolar surgery reinforces the need for antimicrobial stewardship interventions.</p>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147369017","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":"Post-Operative Infections Following Dentoalveolar Surgery Admitted to an Oral and Maxillofacial Surgery Tertiary Centre","authors":"Ali A. R. Musa,&nbsp;Emilija D. Jensen,&nbsp;Ruby Richardson,&nbsp;Andrew Cheng,&nbsp;Paul John Sambrook","doi":"10.1111/adj.70014","DOIUrl":"10.1111/adj.70014","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>This study aimed to evaluate the prevalence, characteristics, and management of post-operative infections (POI) following dentoalveolar surgery in patients admitted to a tertiary oral and maxillofacial surgery (OMS) unit in South Australia over a five-year period.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>A retrospective cross-sectional audit was conducted at a tertiary hospital OMS Unit from January 2019 to December 2023. A post-operative infection was defined as an infection occurring at the surgical site after an initial surgical procedure. Data were collected from 107 patients admitted with POI following surgery. Data on demographics, clinical management, antibiotic use, and microbiological findings were analyzed using descriptive and quantitative statistical methods.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The mean age of patients was 43.5 years, with a slight female predominance (57.9%). Mandibular molars were the most common source of infection (88.8%), with the submandibular space being the most frequently involved (42.1%). Microbiological analysis revealed a 35% antibiotic resistance rate, with clindamycin resistance being particularly high (22.5%). Patients with resistant infections had significantly longer hospital stays (mean 8.9 vs. 4.9 days, <i>t</i>-test, <i>p</i> = 0.012).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>POI following dentoalveolar surgery represents a significant clinical and economic burden, particularly in cases involving antibiotic-resistant organisms. The findings underscore the need for improved antibiotic stewardship, enhanced preventive strategies and definitive early management to optimize patient outcomes and reduce healthcare costs.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"59-67"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145430212","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":"Radiopacity Evaluation of 3D Printed Permanent Crown Restoration Materials","authors":"Elif Çelebi,&nbsp;Berkman Albayrak,&nbsp;Yeşim Ölçer Us,&nbsp;Gökhan Özdemir,&nbsp;Emir Yüzbaşıoğlu","doi":"10.1111/adj.70023","DOIUrl":"10.1111/adj.70023","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>To analyze the radiopacity of three commercially available 3D printing resins, which are currently used for permanent crowns.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Samples were fabricated using Saremco Print Crowntec, VarseoSmile Crown Plus, and Duraprint at 0.5, 1, and 1.5 mm thicknesses. Radiographs were taken alongside a 1-mm tooth section and aluminum step wedge using a photostimulable phosphor system at 60 kVp, 7 mA, 0.25 s, and a 30 cm source-to-object distance. Mean grayscale values were analyzed in ImageJ to calculate mm Al values. Statistical analyses included one-way ANOVA and Tukey HSD tests (<i>p</i> = 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The radiopacity of all tested materials was statistically significantly lower than that of enamel (2.30 ± 0.07 mmAl). Except for the 1.5 mm thick Saremco Print Crowntec and VarseoSmile Crown Plus groups, all of them showed statistically significantly lower radiopacity than that of the dentine (1.27 ± 0.08 mmAl). Duraprint showed the lowest radiopacity values among all groups, and didn't show a statistically significant difference in various thicknesses.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The related 3D printing resins might not achieve sufficient radiopacity, particularly in thin restorations. In Duraprint restorations, distinguishing the natural tissues, restoration or caries would be difficult due to the lack of radiopacity.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"68-73"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145562432","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":"Healing Through Stories: How Yarning Can Transform Indigenous Oral Health","authors":"Luke Chung","doi":"10.1111/adj.70030","DOIUrl":"10.1111/adj.70030","url":null,"abstract":"","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"93-94"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145720725","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":"The Hidden Dangers of Counterfeit and Replica-Like Endodontic Files: A Scoping Review of Current Evidence","authors":"Felipe Immich,&nbsp;Gustavo Henrique Longen,&nbsp;Carolyne Silveira da Motta,&nbsp;Bruna Cavalcante Chaves de Araújo,&nbsp;Giampiero Rossi-Fedele,&nbsp;Lucas Peixoto de Araújo","doi":"10.1111/adj.70031","DOIUrl":"10.1111/adj.70031","url":null,"abstract":"<p>This scoping review mapped and critically appraised laboratory evidence on counterfeit and replica-like nickel–titanium endodontic files, evaluating design, metallurgical composition, surface finishing, and mechanical performance to clarify clinical and regulatory implications. Comprehensive searches of major databases and key endodontic journals identified 17 in vitro studies; no clinical studies were found. Counterfeit instruments consistently exhibited design irregularities, surface defects, and altered metallurgical properties that reduced cyclic fatigue resistance and produced unpredictable mechanical behaviour, posing significant patient-safety concerns. Replica-like instruments showed heterogeneous performance, with some matching or rarely exceeding original files in specific tests but others demonstrating inferior flexibility or torsional resistance. Quality-control standards were inconsistent or lacking. These findings demonstrate that deviations in alloy processing, phase transformation, and surface finishing compromise mechanical reliability and highlight the urgent need for stronger regulatory oversight and clinical validation to safeguard practitioners and patients.</p>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"5-25"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12945868/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145792666","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}

{"title":"Understanding the Oral Health Status and Factors Affecting Poor Oral Health in People Living With Severe Mental Illness: A Cross-Sectional Study","authors":"Shilpi Ajwani,&nbsp;Premala Sureshkumar,&nbsp;Sameer Bhole,&nbsp;Tim Lambert","doi":"10.1111/adj.70006","DOIUrl":"10.1111/adj.70006","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>To assess the oral health status of patients with severe mental illness visiting the Collaborative Centre for Cardiometabolic Health in Psychosis clinics and examine the effect of demographic, medical and social factors on Oral Health (OH).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>The cross-sectional study included adults aged 18–65 years with severe mental illness who attended the clinics in Sydney, Australia between June 2016 and December 2020. As part of the OH assessment, information about their oral hygiene behaviours was recorded and participants underwent dental examination to assess their dental status.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The majority of the 845 patients were male (63%), with a mean age of 43.4 years and a diagnosis of Schizophrenia (61%). Co-morbidities included dyslipidaemia (93.3%), overweight/obesity (81%), and hypertension (47%). Gingival inflammation was noticed in 80% of participants. Caries experience was high, with 44% having active tooth decay requiring restoration or extraction. Age, smoking, schizophrenia, depression and cardiometabolic conditions like diabetes and hypertension were significantly associated with caries. Gingival inflammation was significantly associated with psychiatric diagnosis and antipsychotic medications, male gender, smoking and diabetes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>People with severe mental illness have a high prevalence of dental caries and gingival inflammation. A strong association between dental diseases and demographics as well as cardiometabolic conditions emphasises the need for a multipronged approach to improve the overall health outcomes of people with severe mental illness.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"39-48"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12945865/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124106","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}

{"title":"Trans-Tasman Comparison of Microbial Trends and Antibiotic Resistance Patterns in Severe Odontogenic Infection: A 5-Year Retrospective Analysis of South Australia, Australia and Auckland, New Zealand","authors":"R. J. Richardson,&nbsp;E. D. Jensen,&nbsp;B. Poirier,&nbsp;S. Sethi,&nbsp;A. Cheng,&nbsp;L. Jamieson,&nbsp;P. Sambrook","doi":"10.1111/adj.70021","DOIUrl":"10.1111/adj.70021","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>The aims of this study were to assess and compare trends in microbial cultures and antibiotic resistance in individuals admitted with severe odontogenic infection in Auckland, New Zealand and South Australia, Australia.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A retrospective audit was completed on all adults (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>≥</mo>\u0000 </mrow>\u0000 </semantics></math> 19 years of age) admitted with severe odontogenic infection in the Auckland and South Australia public oral and maxillofacial surgical teams, 2019–2023. Data was collected on demographic information, antibiotic prescribed at discharge, length of admission, number of procedures required, microbes isolated in cultures and antibiotic sensitivity, where completed by the laboratory.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The total combined population of individuals admitted for severe odontogenic infection was 924. Auckland admitted more individuals for severe odontogenic infection (<i>n</i> = 542), compared to South Australia (<i>n</i> = 382) from a similar general population size. Moderate rates of resistance to penicillin (13.4% and 8.8%) and clindamycin (13.9% and 9.4%) in Auckland and South Australian cohorts, respectively were identified.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>There was a higher presence of microbes that were resistant to antibiotics in the Auckland population compared to the South Australian population for individuals admitted for severe odontogenic infection. The presence of resistant microbe(s) was associated with an increasing trend of length of admission and likelihood of repeat surgical procedure(s).</p>\u0000 </section>\u0000 </div>","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"74-82"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145948549","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":"The Hidden Dangers of Counterfeit and Replica-Like Endodontic Files: A Scoping Review of Current Evidence","authors":"Felipe Immich,&nbsp;Gustavo Henrique Longen,&nbsp;Carolyne Silveira da Motta,&nbsp;Bruna Cavalcante Chaves de Araújo,&nbsp;Giampiero Rossi-Fedele,&nbsp;Lucas Peixoto de Araújo","doi":"10.1111/adj.70046","DOIUrl":"10.1111/adj.70046","url":null,"abstract":"","PeriodicalId":8593,"journal":{"name":"Australian dental journal","volume":"71 1","pages":"95-96"},"PeriodicalIF":2.4,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569361","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}