ETIOLOGY AND PATTERN OF IMPACTED MANDIBULAR THIRD MOLARS - A STUDY

Level of mandibular third molars can be classified using the Pell and Gregory classification system, according to their relationship to the occlusal surface (OS) of the adjacent second molar and relation to anterior border of the ramus.6 The angulation can be classified by winter's classificati...

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Bibliographic Details
Published in:Pakistan oral & dental journal 2017-12, Vol.37 (4), p.547
Main Authors: WAZIR, SANA, Khan, Muslim, Ashfaq, Muhammad, Manzoor, Saima
Format: Article
Language:English
Subjects:
Age
Classification
Dentistry
Etiology
Etiology (Medicine)
Impacted tooth
Males
Mandible
Maxillofacial surgery
Molars
Pain
Patients
Periodontics
Population
Studies
Surgery
Teeth
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Summary:Level of mandibular third molars can be classified using the Pell and Gregory classification system, according to their relationship to the occlusal surface (OS) of the adjacent second molar and relation to anterior border of the ramus.6 The angulation can be classified by winter's classification, with reference to the angle formed between the intersected longitudinal axes of the second and third molars.7 The aim of this study was to assess the third molar impaction pattern comprehensively by examining the status of eruption and angulation on panoramic radiographs and relating them to the associated clinical symptoms in patients reporting at Oral and Maxillo-facial Department at Rahman College of Dentistry, Peshawar. Age in No. of pa- Percentage years tients (n) (%) 1 10-20 11 12.3 2 21-30 60 55.5 3 31-40 14 15.7 4 41-50 4 4.4 TABLE 2: ANGULATION OF IMPACTED MANDIBULAR 3RD MOLARS ACCORDING TO WINTERS CLASSIFICATION S. Angulation No. of Im- Percentage No. paction (%) 1 Mesioangular 38 38 2 Verticle 33 33 3 Horizontal 18 18 4 Distoangular 11 11 4 Distoangular 11 11 TABLE 3: POSITION OF IMPACTED MANDIBULAR 3RD MOLAR TO THE ANTERIOR BORDER OF THE RAMUSACCORDING TO PELL AND GREGORY CLASSIFICATION S. Relationto an- No. of Im- Percent- No. terior border of paction age (%) ramus 1 Level A 39 39 2 Level B 35 35 3 Level C 26 26 TABLE 4: RELATION OF OCLUSSAL LEVEL OF IMPACTED MANDIBULAR TEETH TO THE OCCLUCAL LEVEL OF SECOND MANDIBULAR MOLARACCORDING TO PELL AND GREGORY CLASSIFICATION S. Level of occlusal No. of Im- Percent- No. plane in relation paction age (%) to second molar 1 Class 1 42 42 2 Class 2 45 45 3 Class 3 13 13 TABLE 5: CHIEF COMPLAINT OF PATIENTS PRESENTING WITH IMPACTED MANDIBULAR 3RD MOLAR S. Presenting com- No. of pa- Percent- No. plaints tients age (%) 1 Pain 55 39.8 2 Caries of mand 26 18.8 2nd and 3rd molar 3 Periodontal dis- 21 15.2 ease 4 Pericoronitis 18 13 5 Orthodontic pur- 07 5.07 pose 6 Pain of unknown 06 4.34 origin 7 Accidental radio- 05 3.6 graphic finding DISCUSSION Impaction is the failure of tooth eruption into its anatomical position due to hindrance in the eruption path, improper positioning of a tooth, absence of space, or other impediments. [...]a local study done at Khyber College of Dentistry also supports the findings of our study with a male predominance (61.3%).11 Whereas, various studies in past suggests a female predominance.5,6 In a study done on Caucasian, third molar impaction was more common in females.12 In contrast, s
ISSN:1012-8700
1996-4439