Medial Sigmoid Depression of the Mandibular Ramus as a Lesion-Mimicking Anatomical Variation: A Systematic Review

Yeung, Andy Wai Kan; Wong, Natalie

doi:10.3390/ijerph18084271

Cited by 5 publications

(5 citation statements)

References 17 publications

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“…The implant material, placement technique, and gender did not seem to have a profound effect on the resorption rate. Unlike some incidental radiographic findings, such as medial sigmoid depression in the mandible for which the reports were seldom cited (31), the mandibular bone resorption caused by chin implant is well known and the reports were frequently cited. This review showed that these reports were cited 19.2 times on average, a figure even higher than that of osteoporosis detection by panoramic imaging (32).…”

Section: Discussionmentioning

confidence: 99%

Mandibular Bone Resorption Following Chin Augmentation: A Systematic Review

Yeung

Wong

2022

Front. Surg.

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BackgroundChin implants have a long history, and its usage may be associated with mandibular bone resorption.ObjectivesThis report analyzed data on this topic from existing literature to evaluate the overall resorption rate and scientific impact in terms of citations.MethodPubMed, Web of Science, Scopus, and Google Scholar databases were searched to identify relevant publications. The search string was as follows: (chin) AND (augment* OR implant*) AND (resorb* OR resorp*) AND (bone OR osseous). A study was eligible if it recruited human subjects and reported resorption following any chin implantation based on radiographic examination.ResultsTwenty-eight patient studies were identified. Publication year seemed to have no effect on the mean depth of bone resorption and its prevalence as reported by the studies. The increased mean number of follow-up years seemed to have no effect on its prevalence but seem to be associated with deeper bone resorption. The majority of the studies had <5 years of follow-up and reported a mean of <2 mm of bone resorption. The most cited study had 69 citations. Citations rarely came from radiology journals. A limitation was that unpublished data could not be analyzed.ConclusionsMandibular bone resorption caused by chin implants of various materials is a common phenomenon. Its recognition and studies with a longer follow-up period should be further promoted.

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Section: Discussionmentioning

confidence: 99%

Mandibular Bone Resorption Following Chin Augmentation: A Systematic Review

Yeung

Wong

2022

Front. Surg.

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“…MSD area is thin; therefore, it may increase the potential for complications in orthognathic surgery 16 . While performing orthognathic surgery, particularly sagittal split osteotomies and gross bone resections for mandibular corpus cancers, MSD is crucial in determining the osteotomy locations with the lowest risk of fracture 17 . Furthermore, it has been shown that MSD is linked to high levels of muscular activity, which raises the risk of recurrence after orthognathic surgery 18 .…”

Section: Introductionmentioning

confidence: 99%

Medial sigmoid depression prevalence and association with a sigmoid notch: cone beam computed tomography and panoramic image study

Dogan,

Boyacioglu

2024

Sci Rep

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This study aims to determine whether and how the data of the medial sigmoid depression (MSD) area via cone beam computed tomography (CBCT) differs from panoramic radiography. This study also aims to evaluate various sigmoid notch types and assess the relationship between sigmoid depression and notch morphology. A total of 129 individuals consisting of 258 sides were evaluated. Chi-Square/Fisher Exact tests were used to assess parameters on a categorical scale between two or more groups. McNemar’s test compared the findings detected on panoramic and CBCT images. MSD was more prevalent in females than males in both techniques, but this difference was not statistically significant. There was no association between the prevalence of MSD and the morphology of the sigmoid notch. The incidence of MSD shape was not significantly different between both imaging modalities. In both panoramic and CBCT, we found a high and similar prevalence of MSD. While the MSD prevalence was 66.7% for CBCT, it was 58.1% for panoramic. The shape or prevalence of MSDs in either approach did not correlate with sigmoid notch morphology. The two approaches' identical prevalence indicates that the panoramic image has adequately defines MSD. The high prevalence of MSD demonstrated how important it is for clinicians to characterize this anatomical variation accurately for the surgical treatment.

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“…However, it was reported that as many as nearly 42% of general dentists adopted such practice in the United Kingdom [ 2 ]. A panoramic radiograph visualizes a patient’s dental and maxillofacial regions and provides additional morphological and pathological information not available from intraoral radiographs [ 3 , 4 ]. However, such information can only be provided from a clear image taken correctly.…”

Section: Introductionmentioning

confidence: 99%

Content Analysis of YouTube Videos That Demonstrate Panoramic Radiography

Grillon

Yeung

2022

Healthcare

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In this digital era, dental students often search for online resources for self-directed learning. YouTube is one of the most commonly sought online platforms for educational or instructional videos. No prior study has examined the validity of panoramic radiography videos available on YouTube. This study provides a content analysis of these YouTube videos. A search for relevant YouTube videos was conducted in April 2022. The search string was: (panoramic OR pan OR OPG) AND (dental OR dentistry OR X-ray). The first 100 videos that resulted from the search and their related videos were screened. Exclusion criteria included irrelevance (e.g., no demonstration of panoramic radiography procedures) and non-English videos. For each included video, the following parameters were recorded: image receptor type, patient age, patient type (real patient, animation, or phantom head), patient preparation procedures, machine preparation, patient positioning, and operator safety. The number of views, comments, likes, and channel subscribers were recorded, as well as the video duration and the age of the video. Forty videos were included and analyzed. Most of the videos demonstrated digital panoramic radiography with an adult patient. Procedures on the patient and machine preparations as well as patient positioning were generally explained well. However, most videos did not well-demonstrate operator safety details concerning the use of adequate personal protective equipment. View count, comment count, and channel subscriber count positively correlated with the like count. Clinicians and students should carefully critique the content of such instructional videos and refer to the contents from other sources such as user manuals and latest recommendations from local authorities.

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Medial Sigmoid Depression of the Mandibular Ramus as a Lesion-Mimicking Anatomical Variation: A Systematic Review

Cited by 5 publications

References 17 publications

Mandibular Bone Resorption Following Chin Augmentation: A Systematic Review

Mandibular Bone Resorption Following Chin Augmentation: A Systematic Review

Medial sigmoid depression prevalence and association with a sigmoid notch: cone beam computed tomography and panoramic image study

Content Analysis of YouTube Videos That Demonstrate Panoramic Radiography

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