Radiographic Evaluation of Impacted Third Mandibular Molar According to the Classification of Winter, Pell and Gregory in a Sample of Cameroonian Population

IF 1.5 Q3 HEALTH CARE SCIENCES & SERVICES Ethiopian Journal of Health Sciences Pub Date : 2023-09-21 DOI:10.4314/ejhs.v33i5.15
Edouma Jacques, Messina Ebogo, Yann-Chris Eng, Ntenkeu Donald, Zeh Odile
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 Methods: Radiographic signs present on the orthopantomogram showing M3 depth, and retromandibular available space according to the Pell & Gregory classification were evaluated. Evaluation of the M3 angulation relative to the M2 according to Winter's classification was also done. Student's t test was used to determine the association between side or sex and different variables.
 Results: The depth of impaction of the M3 crown was level A accounting for 54.4% (n=260) of the PR while level B constituted 35.7% (n=171) of the images. Regarding the availability of retromandibular space, Class I constituted 36.8% (n=176). The Class II accounted for 55.9% (n=267) of PR. 
 Conclusion: Our study showed that 54.4% of M3 were located at the same level as the occlusal plane of the second molar, while in 56% of PR the space between the second molar and the ramus of the mandible is less than the mesiodistal diameter of the third molar. This research showed that 23.1% of M3 had a level of vertical angulation, a level that allows for less painful luxation of the impacted molars. These results seem to show a relatively high level of difficulty in mobilizing and extracting M3 from Cameroonian patients","PeriodicalId":12003,"journal":{"name":"Ethiopian Journal of Health Sciences","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ethiopian Journal of Health Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/ejhs.v33i5.15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"HEALTH CARE SCIENCES & SERVICES","Score":null,"Total":0}
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Abstract

Background: The extraction of impacted third molars (M3) is a common surgical procedure in dentistry and oral surgery. Various complications, including inferior alveolar nerve (IAN) damage, may occur during and after extraction of this tooth. Radiographic examination should provide information about the M3 itself, but also about the surrounding bony structure and the relationship of the roots to the IAN and the adjacent second molar, which is often traumatized during this extraction. The aim of our study was to evaluate the depth and angulation of impacted mandibular third molars (M3) from panoramic radiographs, according to the classifications proposed by Winter and Pell & Gregory. Methods: Radiographic signs present on the orthopantomogram showing M3 depth, and retromandibular available space according to the Pell & Gregory classification were evaluated. Evaluation of the M3 angulation relative to the M2 according to Winter's classification was also done. Student's t test was used to determine the association between side or sex and different variables. Results: The depth of impaction of the M3 crown was level A accounting for 54.4% (n=260) of the PR while level B constituted 35.7% (n=171) of the images. Regarding the availability of retromandibular space, Class I constituted 36.8% (n=176). The Class II accounted for 55.9% (n=267) of PR. Conclusion: Our study showed that 54.4% of M3 were located at the same level as the occlusal plane of the second molar, while in 56% of PR the space between the second molar and the ramus of the mandible is less than the mesiodistal diameter of the third molar. This research showed that 23.1% of M3 had a level of vertical angulation, a level that allows for less painful luxation of the impacted molars. These results seem to show a relatively high level of difficulty in mobilizing and extracting M3 from Cameroonian patients
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喀麦隆人群Winter, Pell和Gregory分类对下颌第三磨牙阻生的影像学评价
背景:阻生第三磨牙(M3)的拔除是牙科和口腔外科常见的手术方法。各种并发症,包括下牙槽神经(IAN)损伤,可能发生在拔牙期间和之后。x线检查应提供有关M3本身的信息,但也应提供周围骨骼结构的信息以及根与IAN和相邻第二磨牙的关系,后者在拔牙过程中经常受到创伤。本研究的目的是根据Winter和Pell &提出的分类,从全景x线片评估下颌阻生第三磨牙(M3)的深度和角度。格雷戈里·强生# x0D;方法:骨断层扫描显示M3深度和下颌后可用空间(根据Pell &对Gregory分类进行评价。根据Winter的分类对M3相对于M2的成角进行了评价。使用学生t检验来确定侧面或性别与不同变量之间的关联。 结果:M3冠嵌塞深度为A层,占PR的54.4% (n=260), B层占35.7% (n=171)。关于下颌后间隙的可用性,I类占36.8% (n=176)。II类占55.9% (n=267)。 结论:我们的研究显示54.4%的M3位于第二磨牙的咬合平面上,而56%的PR第二磨牙与下颌支之间的距离小于第三磨牙的中远端直径。该研究表明23.1%的M3具有一定水平的垂直角度,这一水平可以减轻阻生磨牙脱位的痛苦。这些结果似乎表明动员和提取M3从喀麦隆患者相对较高的难度
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来源期刊
Ethiopian Journal of Health Sciences
Ethiopian Journal of Health Sciences HEALTH CARE SCIENCES & SERVICES-
CiteScore
2.10
自引率
8.30%
发文量
137
审稿时长
12 weeks
期刊介绍: Ethiopian Journal of Health Sciences is a general health science journal addressing clinical medicine, public health and biomedical sciences. Rarely, it covers veterinary medicine
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