Khalid Mahmood Siddiqi, Muhammad Jammal, Muhammad Mudassar Saleem, Sanam Khan, Sumaira Karamat.
Pattern and frequency of impacted mandibular third molars among patients reporting at Islamabad dental hospital.
Pak Oral Dental J Jan ;40(4):225-8.

The aim of the present study was to determine the pattern and frequency of impacted mandibular third molars in patients reported at Islamabad Dental Hospital (IDH). All the cases of mandibular impacted third molar already registered in IDH with age 21 years or above were included in the study. Orthopantomogram was used to classify impacted mandibular third molars using Pell and Gregory and Winter`s Classification. All the data were noted in a specially designed proforma. Collected data was entered in SPSS. When classified according to Winter, vertical impactions were found in highest percentage (65.3 to 66.5) both on left and right side. When analyzed according to Pell & Gregory Classification, class I & type A were highest followed by class-II and type B on both sides. The most common impaction in this study group was vertical impaction and Pell and Gregory class 1 type A.

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