Oral Surgery Oral Medicine Oral Pathology Oral Radiology最新文献

{"title":"Information for Readers","authors":"","doi":"10.1016/S2212-4403(24)00959-3","DOIUrl":"10.1016/S2212-4403(24)00959-3","url":null,"abstract":"","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page A6"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disparities and diagnostic delays: multiple myeloma","authors":"Dr. Almas Binnal ,&nbsp;Dr. Ghaidaa Badabaan ,&nbsp;Dr. Anita Gohel","doi":"10.1016/j.oooo.2024.11.026","DOIUrl":"10.1016/j.oooo.2024.11.026","url":null,"abstract":"<div><h3>Clinical Presentation</h3><div>Multiple myeloma is an uncommon yet well-known hematological malignancy. The present case reports highlight the diagnostic delay encountered in 2 female patients aged 76 and 70 years. The first patient had pain in the right mandible for several months; however, the source of pain could not be established and was referred to a physician. Physical therapy was recommended, which aggravated her pain. Cone beam computed tomography images revealed a large, fairly well-defined, irregular radiolucency in right posterior mandible with effacement of cortices and a pathological fracture. Multiple, discrete, well-defined radiolucencies also were noted in other anatomical regions. The second patient noticed numbness of lower left jaw whenever she applied a gel on her knees for arthritic pain. The source of the pain could not be established for several months. Cone beam computed tomography images revealed multiple, well-defined radiolucencies distributed in entire mandible with 2 large lesions with effacement of the lingual cortex on left posterior region. Both the patients had paresthesia of the lower lip.</div></div><div><h3>Differential Diagnosis</h3><div>A radiographic diagnosis of multiple myeloma with plasmacytoma was made in both cases.</div></div><div><h3>Diagnosis and Management</h3><div>Histopathologic evaluation confirmed multiple myeloma. Positron emission tomography imaging and other investigations in the first patient showed metabolically active soft-tissue lesion with presence of 80% kappa restricted, predominantly CD27 plasma cells with monosomy 13 and t(11; 14). Patients were referred for appropriate management.</div></div><div><h3>Conclusions</h3><div>Multiple myeloma remains to be a diagnostic challenge owing to its diverse clinical presentations. Patients with multiple myeloma often experience long diagnostic delay, with 50% of the patients’ experience delay longer than 3 months. Prompt establishment of the source of pain and paresthesia is crucial. Early diagnosis and management limit the disease process, help to reduce the associated morbidities, improve prognosis and subsequent survival and quality of life.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e77"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic performance of dental artificial intelligence (AI) platform for caries detection and its potential role in dental education","authors":"Dr. Somyung Ji ,&nbsp;Dr. Kumar Shah ,&nbsp;Dr. Vinodh Bhoopathi ,&nbsp;Dr. Sanjay Mallya","doi":"10.1016/j.oooo.2024.11.060","DOIUrl":"10.1016/j.oooo.2024.11.060","url":null,"abstract":"<div><div>Teaching and evaluating caries detection skills in dental education can be a time-consuming process that requires careful case selection and faculty calibration. We have developed an online caries detection competency assessment that evaluates students' ability to detect caries. The assessment involves scoring radiographs by a panel of 5 UCLA faculty members, with the consensus score considered the correct answer. This study examined the use of the Second Opinion® dental artificial intelligence (AI) platform for caries diagnosis and its potential to enhance student detection skills without faculty intervention.</div><div>The caries detection examination included 47 tooth surfaces, encompassing both proximal and occlusal surfaces. Radiographs were assessed using the AI platform to determine its diagnostic accuracy compared to the faculty consensus score. Student performance on the competency exam was also measured and compared with the AI platform.</div><div>The AI platform exhibited successful caries detection for interproximal surfaces, although it showed limitations in detecting occlusal caries. Of the 19 carious lesions, the platform correctly identified 17, with 1 false positive and 2 false negatives. The platform accurately identified the absence of caries in 27 out of 28 non-carious lesions, resulting in a sensitivity of 89% and a specificity of 96%. Overall, the AI platform correctly scored 44 of the 47 surfaces. In contrast, only 24 of the 47 surfaces were correctly scored by 100% of the students (<em>P</em> &lt; .001). The AI platform provided accurate diagnoses for 21 of the 23 surfaces that some students scored incorrectly. Interestingly, the 3 surfaces incorrectly scored by the AI platform were correctly identified by more than 90% of the students.</div><div>The Second Opinion® dental AI platform holds promise as an effective educational tool, particularly for diagnosing interproximal caries. The platform has the potential to guide accurate diagnoses and improve student performance in caries detection.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e90"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The potential usefulness of ChatGPT in the queries related to radiation biology and radiation protection","authors":"Dr. Jyoti Mago","doi":"10.1016/j.oooo.2024.11.075","DOIUrl":"10.1016/j.oooo.2024.11.075","url":null,"abstract":"<div><h3>Aim</h3><div>This current research aimed to evaluate the potential usefulness of ChatGPT in queries related to radiation biology and radiation protection. The study also aimed to evaluate recommendations for its usage in oral and maxillofacial radiology training.</div></div><div><h3>Materials and Methods</h3><div>A 40-question questionnaire was queried to the open-AI app ChatGPT3 application. There was an equal distribution of random questions on the basis of 2 categories; related to radiation biology and radiation protection. One oral and maxillofacial radiologist evaluated those queries that were answered by ChatGPT 3 model and rated them on a 4-point modified Likert scale. The post-survey analysis for its performance of ChatGPT was based on Strength Weakness Opportunity and threat analysis and its application in oral and maxillofacial radiology training and its recommendation of use.</div></div><div><h3>Results</h3><div>The mean scores for the queries related to radiation biology and radiation protection were 3.7 and 3.45, respectively. However, the median and mode scores were 4 and were similar to both categories. Of 40 queries, 2 abbreviations were queried from the segment of radiation protection, and none of them was answered correctly. The queries need to be very specific to get an appropriate response.</div></div><div><h3>Conclusion</h3><div>The study showed that ChatGPT-3 being a descriptive model is quite competent in answering queries related to radiation biology and radiation protection. ChatGPT can be used as an adjunct when an oral radiologist needs a piece of supplementary information; however, the data have a possibility of errors and high risk of infodemics. The information provided by ChatGPT is more advantageous for the queries of the general public, supplemented by the confirmatory responses from the oral and maxillofacial radiologists of that state.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e96"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accuracy of orthopantomography in predicting position and proximity of superimposed or nearby third molar root relative to inferior alveolar canal","authors":"Prof. Gina Roque ,&nbsp;Prof. Dwight Rice ,&nbsp;Mr. Geonwoong Park ,&nbsp;Mrs. Min Jung Yoon ,&nbsp;Prof. Udochukwu Oyoyo","doi":"10.1016/j.oooo.2024.11.065","DOIUrl":"10.1016/j.oooo.2024.11.065","url":null,"abstract":"<div><h3>Objectives</h3><div>Panoramic radiography is still most widely used for third molar extractions evaluation. This study evaluated the correlations between panoramic radiographic signs and relationship between third-molar root and inferior alveolar (IA) canal using cone beam computed tomography (CBCT) as our gold standard.</div></div><div><h3>Study Design</h3><div>In total, 218 patients with 380 mandibular third molars were selected. Panoramic and CBCT variables were examined, along with demographics and third-molar root classification identification. Nine PANO variables (radiolucency around the roots, radiolucency on the roots, deviation of roots, narrowing of roots, narrowing of IA canal, deviation of IA canal, interruption of superior white line border of IA canal, contact between Root and IA canal, superimposition of root and IA canal) and 4 CBCT variables (location of IA canal, contact between root and IA canal, distance between root and IA canal [mm], and interruption of buccal and/or lingual plate of mandible) were evaluated. Binomial logistic regression was performed.</div></div><div><h3>Results</h3><div>Five variables were statistically significant predictors of presence of contact between root and IA canal assessed in CBCT: superimposition of root and IA (<em>P</em> &lt; .001), narrowing of IA canal (<em>P</em> &lt; .003), interruption of superior white line of IA canal wall (<em>P</em> &lt; .016), narrowing of root (<em>P</em> &lt; .036), and radiolucency on root (<em>P</em> &lt; .049). Mesioangular impactions had a statistically significant correlation with the presence of contact between root and IA (<em>P</em> &lt; .010).</div></div><div><h3>Conclusions</h3><div>Five PANO variables were effective in predicting contact between IA canal and third molar roots on CBCT, with an overall accuracy of 87%.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e92"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of the Incisive branch of the inferior alveolar nerve in edentulous mandibles using cone beam computed tomography (CBCT)","authors":"Dr. Ashley Madern ,&nbsp;Dr. H. Dexter Barber ,&nbsp;Dr. Gina Agostini-Walesch ,&nbsp;Dr. Trever Siu ,&nbsp;Mrs. Jamie Klinefelter ,&nbsp;Mr. Justin Martin","doi":"10.1016/j.oooo.2024.11.057","DOIUrl":"10.1016/j.oooo.2024.11.057","url":null,"abstract":"<div><h3>Objective</h3><div>Risk of iatrogenic paresthesia and postoperative complications increases in patients with edentulism. This study measures agreement of a standard, cone beam computed tomography (CBCT)-derived incisive branch (IB) measurement across independent observers and secondarily compares average IB characteristics in relation to patient demographics.</div></div><div><h3>Study Design</h3><div>A retrospective study of edentulous mandibles was performed using CBCT to assess IB anatomical variation. Three independent observers (2 dental students, 1 licensed oral and maxillofacial radiologist [OMR] independently measured IB length. Eighty-five bilateral measurements were pooled for agreement analysis using coefficients of interrater reliability (IRR). A paired, one-way analysis of variance tested for significant differences between observers. Additionally, the OMR recorded 236 observations for demographic analyses. These were subject to a one-way analysis of variance testing whether IB length varied by sex or port exit. A Pearson's correlation tested for a significant correlation with age. All statistics were performed using R (version 4.1.2) packages IRR, survival, and PerformanceAnalysis.</div></div><div><h3>Results</h3><div>IRR results show strong, significant agreement across all observers (intraclass correlation coefficient = 0.944, 95% confidence interval 0.921-0.962, <em>P</em> &lt; .0001), indicating no systematic differences was detected. This was corroborated by high correlations between observers (R² = 0.95, <em>P</em> &lt; .0001) and non-significant analysis of variance results (<em>P</em> = .74, F = 0.303). Trained student observers were within 2 mm of OMR values 90% to 93% of the time. Descriptive results showed a mean IB length of 9.93 ± 4.11 (9.72 ± 4.05 for left, 10.17 ± 4.18 for right). A lingual port of exit was observed in 13.56% of cases. There was a significant effect of port on IB length (F = 10.21, <em>P</em> = .002), with lingual ports being shorter (7.82 ± 3.06 mm vs 10.27 ± 4.16 mm). A significant effect was reported for sex (F = 3.916, <em>P</em> = .05), with women having shorter IB lengths (8.98 ± 3.3 mm vs 10.38 ± 3.67 mm). There was no significant correlation with age (R² = −0.094).</div></div><div><h3>Conclusion</h3><div>The IB measurements had high agreement across observers with varying experience. Edentulous mandibles have a varied anatomic landscape and establishing a predictive IB dimension will aid practitioners in surgical planning.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e89"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subjective evaluation of photon counting sensor for interproximal caries detection","authors":"Dr. Santiago Cobos ,&nbsp;Dr. Aditya Tadinada","doi":"10.1016/j.oooo.2024.11.009","DOIUrl":"10.1016/j.oooo.2024.11.009","url":null,"abstract":"<div><h3>Objective</h3><div>Photon-counting sensors (PCS), as the name indicates, are a new kind of sensor that creates the image by counting photons. PCS are, in theory, less sensitive to image blur and might be more sensitive to early caries detection. The objective of this in vitro study is to present a subjective evaluation of bitewing radiographs captured with PCS when compared with traditional digital sensors like complementary metal oxide semiconductor (CMOS) sensors and photo-stimulable phosphor (PSP) plates.</div></div><div><h3>Study Design</h3><div>Extracted teeth with no carious lesions were mounted in a modular stage to replicate the configuration of (1) maxillary and (1) mandibular bitewing radiographs. The stage allowed repetitive installation of interchangeable holders for the 2 digital sensors and the PSP plate ensuring that the geometry of the radiographs was consistent for all technologies. Multiple bitewing radiographs were acquired at 70 kVp and 7 mA with varying exposure times (0.02, 0.08, 0.125, and 0.250 seconds). Two teeth were then drilled using a 0.5-mm diameter bur to simulate an incipient interproximal lesion, and images were recaptured with the previously mentioned exposure parameters. Six examiners—1 oral radiologist and 5 oral radiology residents—were asked to subjectively rate the diagnostic value and image quality metrics (i.e., spatial resolution, contrast resolution, dynamic range, and noise) of the bitewing radiographs.</div></div><div><h3>Results</h3><div>Image quality metrics like spatial resolution and noise characteristics of PCS ranked above the CMOS sensor and PSP plate, CMOS sensors were ranked as the technology with the best contrast resolution, and PSP plates had the best dynamic range. PCS were overall ranked as the preferred technology for defect detection and outperformed CMOS sensors and PSP plates when exposure parameters were not ideal.</div></div><div><h3>Conclusion</h3><div>PCS have the potential to provide clinical information with high diagnostic value. More research is needed to further evaluate the sensitivity and specificity of this technology.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e70"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of virtual reality as a radiology teaching tool for dental students","authors":"Prof. Vinicius Dutra ,&nbsp;Dr. Sanjana Madarapu ,&nbsp;Prof. Luis Arriola Guillen ,&nbsp;Prof. Gabriela Liedke ,&nbsp;Prof. Phillip Wong ,&nbsp;Prof. Zebulun Wood","doi":"10.1016/j.oooo.2024.11.004","DOIUrl":"10.1016/j.oooo.2024.11.004","url":null,"abstract":"<div><h3>Objective</h3><div>To evaluate the effectiveness of a customized virtual reality (VR) application and its impact on radiographic image quality and the number of retakes by new learners.</div></div><div><h3>Study Design</h3><div>Thirty-nine first-year dental students were included in the research project. Students who had already taken dental radiology classes, had previous experience in taking intraoral radiographs, or had experience in the use of VR models were excluded. The students were randomized into 3 different groups: group A (Control, no VR use), group B (VR training and use), and group C (VR training and use + radiographic technique video). All groups attended regular lectures of the predoctoral course and a technique demonstration session. Subsequently, the students were required to complete a half full mouth series and were evaluated on the basis of the number of retakes and the graded radiographic image quality. The statistical analysis was conducted using IBM SPSS Statistics software for Windows, version 25.0 (IBM Corp.). Image quality and the number of retakes were compared among the 3 groups. Data normality was evaluated using the Shapiro-Wilk test, followed by the application of the Kruskal-Wallis and Wilcoxon rank-sum tests to compare the 3 groups.</div></div><div><h3>Results</h3><div>The use of VR had a significant effect on the number of retakes and the quality of the radiographs (<em>P</em> &lt; .05). The use of VR significantly improved students' grades (mean grades 7.77 vs 9.38 vs 8.31). The average number of retakes was 6.62 for group A, 3.38 for Group B, and 3.46 for Group C.</div></div><div><h3>Conclusion</h3><div>The use of VR as a teaching tool had an impact on the number of retakes and the quality of the radiographs by new learners. When using the VR application, students had fewer retakes and greater radiographic technique grades. The use of VR should be encouraged in dental education.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e68"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case study of an incidental finding and effects of an incomplete fracture union in the right angle of the mandible","authors":"Dr. Steven Dorris ,&nbsp;Dr. Sindhura Anamali ,&nbsp;Dr. J.P. Castro","doi":"10.1016/j.oooo.2024.11.029","DOIUrl":"10.1016/j.oooo.2024.11.029","url":null,"abstract":"<div><h3>Clinical Presentation</h3><div>A cone beam computed tomography dataset of an 8-year-old female patient was referred to the University of Iowa College of Dentistry Radiology service for identification of the location of multiple unerupted teeth, specifically the permanent canines and mandibular lateral incisors. Upon viewing the dataset, an oblique hypodense line involving the entire width of the mandible measuring approximately 20 mm extending through the angle of the right side of the mandible was noted. The referring doctor was not aware of this finding, and the patient was not symptomatic at the time. The hypodense line extended from the facial cortex just distal to the developing mandibular right second molar to the lingual cortex. There were multiple hypodense areas surrounding the fracture plane and portions of the surrounding bone had rolled cortical margins suggestive of fibrous healing at the site. Furthermore, the portions of the mandible that were posterior to this region were found to be underdeveloped. This is a valuable finding, as previous research on this subject has been inconclusive and primarily focused on fractures involving the condyle. The fracture in question was not identified in a previous pantomograph that was subsequently provided upon requisition.</div></div><div><h3>Differential Diagnosis</h3><div>Fibrous union right angle fracture of the mandible.</div></div><div><h3>Diagnosis and Management</h3><div>Follow-up to assess osseous healing was recommended in few weeks. The patient is currently asymptomatic. If there continues to be lack of osseous healing in the follow-up radiograph, surgical intervention will be necessary to avoid further complications.</div></div><div><h3>Conclusion</h3><div>Routine evaluations of CBCTs can unexpectedly reveal significant findings, such as this unique fracture in the mandible. Moreover, this particular case exemplifies the remarkable healing capacity of fibrous tissue in fractures, where minimal intervention was involved. Such fractures may lead to observable impacts on the growth and development of the mandibular ramus, condyle, and coronoid processes.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Page e78"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of filtered back projection and iterative reconstructions on cone beam computed tomography (CBCT) image quality and processing time","authors":"Dr. Christiano de Oliveira Santos ,&nbsp;Ms. Amanda Ramage ,&nbsp;Dr. Kathleen Fischer ,&nbsp;Dr. Michael Sekula ,&nbsp;Dr. Gustavo Santaella ,&nbsp;Dr. William Scarfe","doi":"10.1016/j.oooo.2024.11.055","DOIUrl":"10.1016/j.oooo.2024.11.055","url":null,"abstract":"<div><h3>Objectives</h3><div>To assess the effect of standard filtered back projection (FBP) and iterative reconstruction (IR) methods on cone beam computed tomography (CBCT) image noise and processing time (PT), acquired with various acquisition parameters with and without metal artifact reduction (MAR).</div></div><div><h3>Methods</h3><div>CBCT scans using the Midmark EIOS unit of a human mandible embedded in soft tissue−equivalent material with and without the presence of an implant at mandibular first molar region were acquired at various acquisition settings (milliamperages [4 mA-14 mA], field of view [5 × 5, 6 × 8, 9 × 10 cm], and resolutions [low, standard, high]) and reconstructed using FBP and IR, and with and without MAR. The processing time was recorded for each reconstruction. ImageJ was used to analyze specific axial images. Radial transaxial fiducial lines were created relative to the implant site. Standard deviations of the gray density values (image noise) were calculated at fixed distances on the fiducial lines on the buccal and lingual aspects at specific axial levels, and mean values for FBP and IR were compared using paired <em>t</em> tests. Significance was defined as <em>P</em> &lt; .05.</div></div><div><h3>Results</h3><div>The overall mean for image noise (± SD) for FBP was 198.65 ± 55.58 and 99.84 ± 16.28 for IR. IR significantly decreased image noise compared to FBP at all acquisition parameters (<em>P</em> &lt; .001). Percentage noise reduction ranged between 41.9% (protocols at 5 mA) and 70.3% (FBP / 9 × 10 cm / low resolution / no MAR). IR increased processing time by an average of 35.1 seconds.</div></div><div><h3>Conclusions</h3><div>IR significantly reduces CBCT image noise compared to standard FBP without substantially increasing processing time.</div></div>","PeriodicalId":49010,"journal":{"name":"Oral Surgery Oral Medicine Oral Pathology Oral Radiology","volume":"139 3","pages":"Pages e88-e89"},"PeriodicalIF":2.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}