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Natl J Maxillofac Surg. 2019 Jan-Jun;10(1):59-67. doi: 10.4103/njms.NJMS_70_17.

Study of pattern and prevalence of mandibular impacted third molar among Delhi-National Capital Region population with newer proposed classification of mandibular impacted third molar: A retrospective study.

Author information

1
Department of Oral and Maxillofacial Surgery, Inderprastha Dental College and Hospital, Ghaziabad, Uttar Pradesh, India.
2
Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, King George Medical University, Lucknow, Uttar Pradesh, India.
3
Department of Oral and Maxillofacial Surgery, M. B. Kedia Dental College, Birgunj, Nepal.
4
Department of Oral and Maxillofacial Surgery, ESIC Dental College and Hospital, Delhi, India.
5
Department of Oral Pathology, Govt. Dental College and Hospital, Aurangabad, Maharashtra, India.
6
Departmemt of Dentistry, T. S. Misra Medical College and Hospital, Lucknow, Uttar Pradesh, India.

Abstract

Aim/Objective:

The mandibular third molar is the most frequently impacted tooth with incidence varies from 9.5% to 68% in different populations. Hence, the aim was to study the prevalence and pattern of mandibular impacted third molar among Delhi-National Capital Region (NCR) population.

Materials and Methods:

The study was conducted with data collected from registered hospitals and dental clinics of Delhi NCR region. The study represents a retrospective analysis of panoramic radiographs and intraoral periapical radiograph of patients at these centers from June 2014 to June 2016.

Results:

Out of 960 patients with the third molar investigated, a total of 250 patients having impacted mandibular third molar (152 [60.8%] males and 98 [39.2%]) females between June 2014 and June 2016 were included in the study. The age ranged from 20 to 55 years, with a mean age of 27.6 years and the standard deviation was 5.8 years. The prevalence of impacted mandibular third molars for this study was 26.04%.

Conclusion:

This study demonstrated that males (60.8%) were more likely to present with impacted mandibular third molars than females (39.2%). The prevalence of third molar impactions was almost the same on both the left (45.8%) and right (54.2%) sides. This study also noted that mesioangular impactions (49.2%) were the most common type of impaction. The least common form of impactions was the transverse types (2%). The prevalence of impacted mandibular third molars for this study was 26.04%.

KEYWORDS:

Alveolar osteitis; impaction; nerve injury; pericoronitis; ramus relationship

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