Journal of Dentomaxillofacil Radiology, Pathology and Surgery، جلد ۳، شماره ۴، صفحات ۲۰-۲۵
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عنوان انگلیسی Associations between Impaction Depth of the Mandibular Third Molar and Pathological Conditions
چکیده انگلیسی مقاله Introdouction: Impacted and partially erupted third molars can cause various symptoms and pathologies. The aim of this study was to determine the association between commonly observed pathological conditions and the impaction depth of lower third molar teeth. Materials and methods: In this retrospective study, 370 panoramic radiographs including 724 lower third molars were evaluated to assess several pathologies according to impaction depth. The patients were also examined clinically for pericoronitis. Impaction depth was defined according to horizontal indices in class I, II, or III, where none, less than half, or more than half of the crown was in the ramus of the mandible, respectively. The vertical indices for teeth, classes A, B, and C, were defined by the highest portion of the tooth being on a level with or above the occlusal plane, below the occlusal plane but above the cervical line of the second mandibular molar, or below the cervical line of the second mandibular molar, respectively. The data were analyzed using Chi-squared tests. Results: Of the teeth analyzed, 57%, 28.4%, and 14.6% were at vertical level A, B, and C, respectively. Of the 605 mandibular third molars, 363 (60%) were in horizontal class I, 212 (35%) were in class II, and 31 (5%) were in class III. Incidence of pericoronitis was significantly associated with partially erupted third molars and impactions of class AII (P = 0.028). Class A impaction showed a stronger association than classes B or C with all conditions (P = 0.04) except for bone loss and root resorption of second molars (P = 0.07). Conclusion: Class A impaction depth, where the highest portion of the tooth was on a level with or above the occlusal plane, was associated with more pathological conditions than classes B or C.
کلیدواژه‌های انگلیسی مقاله Molar ,Third. Tooth ,Impacted,Radiography ,Panoramic.
نویسندگان مقاله علی مختار | ali mokhtar
islamic azad university, dental faculty , tehran ,iran

سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

پگاه برونوش | pegah bronoosh
alborz radiology center , karaj, iran


عبدالعزیز حق نگهدار | abdolaziz haghnegahdar
shiraz university of medical sciences, oral and maxillofacial radiology department, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

نشانی اینترنتی http://3dj.gums.ac.ir/browse.php?a_code=A-10-1-64&slc_lang=en&sid=en
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