Use of CBCT scan for introducing a radiological classification of impacted third molar
European Journal of Molecular & Clinical Medicine,
2022, Volume 9, Issue 2, Pages 985-992
AbstractBackground: The impaction rate is much higher for third molars as compared to other teeth. While impacted third molars may remain asymptomatic for an indefinite period, it can cause various delinquents, such as pericoronitis, swelling with pain, distal caries, bone loss, root resorption of adjacent teeth, odontogenic cysts, and tumors. That’s why the most frequent surgical procedure in dentistry is third molar tooth extraction.
Objective: The aim is to propose a new classification for impacted mandibular third molars on CBCT images which cover all aspects of the anatomical situation
Methodology: A total of 143 images of molar teeth was collected and classified according to a relationship with the IAN canal and molar tooth. For statistical calculation, SPSS software was used.
Results: Classes 0-7 were planned and in which classes 1-6 were sectioned into two subtypes (subtypes A-B). The distribution of the classes presented an occurrence of buccal or apical course of the mandibular canal tailed by lingual position and inter-radicular one. Results emphasized that a close relationship of molar roots with the lingual side of IAN was more in female versus male other than it no anatomic differences occur in terms of IAN relationships between males and females. Younger patients displayed an increased rate of direct contact with a reduced calibre of the canal and/or without corticalization. This increases the chances of IAN damage, especially in the young woman (age range 25-30 years) with a lingual course of the mandibular canal.
Conclusion: The use of this classification is appreciated to get an equal definition of the impacted tooth on CBCT images worldwide.
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