Evaluation of Panoramic Radiographs in Relation to the Mandibular Third Molar and to Incidental Findings in an Adult Population

Cederhag, Josefine; Lundegren, Nina; Alstergren, Per; Shi, Xie‐Qi; Hellén‐Halme, Kristina

doi:10.1055/s-0040-1721294

Cited by 14 publications

(13 citation statements)

References 31 publications

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“…Lower prevalence of 0.4% [ 21 , 23 ], 0.5% [ 24 ], 1.86% [ 2 ], 2% [ 13 ], and 2.9% [ 25 ] for periapical inflammatory lesions have been found. Other studies have reported higher prevalence of periapical inflammatory lesions ranging from 25–28.6% [ 18 , 19 , 26 ].…”

Section: Discussionmentioning

confidence: 99%

Incidental Pathologic Findings from Orthodontic Pretreatment Panoramic Radiographs

Hlongwa

Moshaoa

Musemwa

et al. 2023

IJERPH

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Panoramic radiography is frequently performed for new patients, follow-ups and treatment in progress. This enables dental clinicians to detect pathology, view important structures, and assess developing teeth. The objective of the study was to determine prevalence of incidental pathologic findings (IPFs) from orthodontic pretreatment panoramic radiographs at a university dental hospital. A retrospective cross-sectional review was conducted of pretreatment panoramic radiographs, using data collection sheets with predefined criteria. Demographic data and abnormalities (impacted teeth, widening of periodontal ligament, pulp stones, rotated teeth, missing teeth, unerupted teeth, crowding, spacing, supernumerary teeth, and retained deciduous teeth) were reviewed. SPSS 28.0 was used to analyze data with statistical tests set at a 5% significance level. Results: One hundred panoramic radiographs were analyzed with an age range of 7 to 57 years. The prevalence of IPFs was 38%. A total of 47 IPFs were detected with altered tooth morphology predominantly (n = 17). Most IPFs occurred in males (55.3%), with 44.7% in females. A total of 49.2% were in the maxilla and 50.8% in the mandible. This difference was statistically significant (p < 0.0475). Other abnormalities were detected in 76% of panoramic radiographs; 33 with IPFs and 43 without. A total of 134 other abnormalities detected showed predominantly impacted teeth (n = 49). Most of these abnormalities were in females (n = 77). Conclusions: The prevalence of IPFs was 38%, predominated by altered tooth morphology, idiopathic osteosclerosis, and periapical inflammatory lesions. Detection of IPFs from panoramic radiographs underscored the importance for clinicians to examine them for comprehensive diagnosis and treatment planning, especially in orthodontics.

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Section: Discussionmentioning

confidence: 99%

Incidental Pathologic Findings from Orthodontic Pretreatment Panoramic Radiographs

Hlongwa

Moshaoa

Musemwa

et al. 2023

IJERPH

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“…Most (86%) of the respondents (response options: always or often ) would use panoramic radiographs in pre-surgical assessment of the mandibular third molars if possible. This is expected since the panoramic unit is commonly accessible, the image provides a useable overview, and in many cases, it is sufficient for a pre-surgical examination of the third molar [ 2 ]. Also, it is a cost-effective choice [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

“…A panoramic radiograph has lower spatial resolution and is thus less detailed than intraoral radiographs; however, it provides a useable overview of the teeth, bone, and anatomical structures in the maxillofacial area and is considered a useful method for many third molar cases before surgical removal [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Radiographic imaging in relation to the mandibular third molar: a survey among oral surgeons in Sweden

et al. 2021

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Objectives To query the experience of oral surgeons concerning referral routines and preferences for radiographic imaging modality before surgical removal of mandibular third molars and investigate factors that influence imaging modality preferences. Materials and methods Members of the Swedish Association of Oral and Maxillofacial Surgeons (n = 280) were invited to participate in a web-based digital survey concerning their experiences and use of three imaging modalities in pre-surgical assessment of mandibular third molar removal. The survey comprised multiple-choice questions and four cases depicted in images; respondents reported whether they would supplement the cases with other images and, if so, from which modality. Results The response rate was 64%. Panoramic radiographs were most commonly used in pre-surgical planning (response options: always or often), significant difference between professions (p = 0.039), and considered to facilitate treatment planning (87%), as was CBCT (82%); for 51%, CBCT reduced post-operative complications. Preferred modality for localizing the mandibular canal was fairly evenly distributed and for non-complex case, significant difference between subgroups of OMFS surgeons was found (p = 0.003) as to preference for intraoral radiographs. Conclusions A majority of respondents received a report within 2 weeks of their referral for CBCT and would read the report and view the images before surgery. Image modality preference differed depending on case complexity, with a greater perceived need for CBCT. Profession and practical experience affected choice. Clinical relevance Choice of imaging modality in mandibular third molar assessment is also important from dose delivery and social economy standpoints.

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“…Moreover, CBCT imaging delivers a higher radiation dose compared with panoramic radiographs. 11,12 In this study, we developed a computer-aided diagnosis (CAD) system to assist osteoporosis assessment based not only on MCW but also on analysis of the texture of the cortical bone representing the bone porosity. This assessment was performed using digital panoramic radiographs and patients were classified into normal, osteopenia, or osteoporosis groups using multiclass classification with the support vector machine (SVM).…”

Section: Introductionmentioning

confidence: 99%

Computer-Aided System of the Mandibular Cortical Bone Porosity Assessment on Digital Panoramic Radiographs

et al. 2022

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Objectives The loss of bone mineral density (BMD) in various sites of the body, including the mandible, is the main sign of osteoporosis. Thus, the computer-aided diagnosis (CAD) system was developed for bone density assessment and patients were classified into normal, osteopenia, and osteoporosis groups using a digital panoramic radiograph. Material and Methods Data of dental panoramic radiographs and corresponding BMD assessments from 123 postmenopausal women were collected. For the proposed CAD system test, regions of interest (ROI) that were located below the left and right mental foramen on dental panoramic radiographs were determined. The width and texture of the mandibular cortical bone in each ROI were used to classify the data into normal, osteopenia, and osteoporosis classes. The width of the mandibular cortical was measured using the polynomial fitting method. The texture feature of the cortical bone is obtained by calculating the average value of the grayscale intensity of cortical bone. The classification result was obtained by using a multiclass support vector machine. Results The experimental results using 10-fold cross-validation showed that the proposed system achieved an average accuracy of 86.50% for osteoporosis classification on dental panoramic radiographs. The average misclassification error and relative foreground area error of the segmentation process were 5.21 and 12.98%, respectively. From the analysis of the cortical width measurement process, highest average mandibular cortical width (MCW) was found in the normal patient category compared with the other classes. Conclusion This research showed that the proposed computer-aided system can be used for osteoporosis and osteopenia assessment by measuring the MCW and texture on dental panoramic radiographs with the average system accuracy of 89.52%.

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Evaluation of Panoramic Radiographs in Relation to the Mandibular Third Molar and to Incidental Findings in an Adult Population

Cited by 14 publications

References 31 publications

Incidental Pathologic Findings from Orthodontic Pretreatment Panoramic Radiographs

Incidental Pathologic Findings from Orthodontic Pretreatment Panoramic Radiographs

Radiographic imaging in relation to the mandibular third molar: a survey among oral surgeons in Sweden

Computer-Aided System of the Mandibular Cortical Bone Porosity Assessment on Digital Panoramic Radiographs

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