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VOLUME 18 , ISSUE 2 ( February, 2017 ) > List of Articles

RESEARCH ARTICLE

Prevalence and Pattern of Mandibular Third Molar Impaction in Eritrean Population: A Retrospective Study

V Raj Kumar, Priya Yadav, Efrem Kahsu, Farhana Girkar, Rajnish Chakraborty

Citation Information : Kumar VR, Yadav P, Kahsu E, Girkar F, Chakraborty R. Prevalence and Pattern of Mandibular Third Molar Impaction in Eritrean Population: A Retrospective Study. J Contemp Dent Pract 2017; 18 (2):100-106.

DOI: 10.5005/jp-journals-10024-1998

Published Online: 01-06-2017

Copyright Statement:  Copyright © 2017; The Author(s).


Abstract

Introduction

The most commonly impacted tooth in the oral cavity is the mandibular third molar. Various etiologic factors have been suggested for impacted mandibular third molars. The pattern and prevalence of impacted mandibular third molars vary with different population and region. This study throws light on the prevalence and pattern of impacted mandibular third molars in Eritrea, East Africa. This is the first reported study regarding the same from Eritrea.

Aim

To assess the prevalence and pattern of impacted mandibular third molars in the population of Eritrea, East Africa by conducting a retrospective study from January 2009 to January 2014.

Materials and methods

This study was conducted in the Department of Oral and Maxillofacial Surgery, Orotta School of Medicine and Dental Medicine and the Orotta Referral Medical and Surgical Hospital, Asmara, Eritrea. A total of 1,813 clinical and radiographic records [orthopantomograms] were assessed and 276 cases were selected for the study as per the inclusion criteria. They were evaluated for the frequency among the various age groups, gender and region along with the sides affected, angulation and level of impaction. The presence of systemic conditions and associated pathologies was also assessed according to the type of impaction.

Results

The average age of these patients in the study was found to be 30 years, with the 20 to 30 years age group being the most affected (67.4%). Females (53.3%) were affected more than the males (46.7%). People from the Asmara region showed significantly more prevalence (79.7%) than the adjoining areas (20.3%). Mesioangular impaction was the most common angulation with a definite relationship to the age groups (p = 0.032). The level of impaction had no significant relationship to the age groups, gender, or region, although class I position A was found to be the most common type. Mesioangular class I position A impaction showed an apparent relationship with underlying systemic conditions, but it was statistically insignificant. Mesioangular impaction was found to be associated with the most number of pathologies (p = 0.001).

Conclusion

The prevalence of mandibular impaction was less in Eritrea (15.2%) compared with other populations. This study provides useful baseline data for the prevalence and pattern of mandibular impaction in the Eritrean population.

Clinical significance

This study throws light on the pattern, type, and frequency of mandibular impacted teeth as per age, sex, and region among the population of Eritrea.

How to cite this article

Kumar VR, Yadav P, Kahsu E, Girkar F, Chakraborty R. Prevalence and Pattern of Mandibular Third Molar Impaction in Eritrean Population: A Retrospective Study. J Contemp Dent Pract 2017;18(2):100-106.


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  1. Principles of exodontia. 2nd ed. St. Louis, MO: CH Mosby; 1962. 388 p.
  2. Oral and maxillofacial surgery. 5th ed. Philadelphia, PA: WB Saunders; 1975. 1859 p.
  3. Indications and contraindications for removal of the impacted tooth. Dent Clin North Am 1979 Jul;23(3):333-346.
  4. Text book and colour atlas of tooth impactions. 1st ed. Copenhagen: Munksgaard; 1997. 542 p.
  5. Principles of management of impacted teeth. In: Eills E, Huup JR, Tucker MR, editors. Contemporary oral and maxillofacial surgery. 4th ed. New York: Mosby; 2003. p. 184-213.
  6. Eruption of third molars: relationship to inclination of adjacent molars. Am J Orthod Dentofacial Orthop 2004 Feb;125(2):200-202.
  7. Report of workshop on the management of patients with third molar teeth. J Oral Maxillofac Surg 1994 Oct;52(10):1102-1112.
  8. The fate of impacted lower third molars after the age of 20. A four-year clinical follow-up. Int J Oral Maxillofac Surg 1989 Oct;18(5):277-280.
  9. The eruption of third molars in adults: a 10-year longitudinal study. Oral Surg Oral Med Oral Pathol 1989 Jul;68(1):9-13.
  10. The age of eruption of third molar teeth. Acta Odontol Scand 1961;25(Suppl 1):48.
  11. A radiographic four-year follow-up study of asymptomatic mandibular third molars in young adults. Int Dent J 1990 Feb;40(1):24-30.
  12. The effect of mandibular first premolar extraction on third molar space. Angle Orthod 1989 Winter;59(4):291-294.
  13. Pre-eruptive movements of the mandibular third molar. Angle Orthod 1978 Jul;48(3):187-193.
  14. Etiology of third molar impaction. In: Andreasen JO, Petersen JK, Laskin DM, editors. Textbook and color atlas of tooth impactions. Copenhagen: Munksgaard; 1997. p. 223-227.
  15. Evaluation of the agreement by examiners according to classifications of third molars. Med Oral Patol Oral Cir Bucal 2012 Mar;17(2):e281-e286.
  16. Impaction status of third molars in Jordanian students. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1995 Jan;79(1):24-29.
  17. The incidence of impacted wisdom teeth in a Saudi community. Int J Oral Maxillofac Surg 1986 Oct;15(5):569-571.
  18. Pattern of third molar impaction in a Singapore Chinese population: a retrospective radiographic survey. Int J Oral Maxillofac Surg 2003 Oct;32(5):548-552.
  19. Reasons for early removal of impacted third molars. Clin Prev Dent 1981 Nov-Dec;3(6):19-23.
  20. Radiographic follow-up of impacted third molars from age 20 to 32 years. Int J Oral Maxillofac Surg 2001 Feb;30(1):54-57.
  21. A survey of 3,874 routine full-mouth radiographs. I. A study of retained roots and teeth. Oral Surg Oral Med Oral Pathol 1961 Aug;14:916-924.
  22. A radiological study of the frequency and distribution of impacted teeth. J Dent Assoc S Afr 1982 Sep;37(9):627-630.
  23. Impacted teeth: a comparative study of Chinese and Caucasian dentitions. J Dent Res 1932;12(6):931-938.
  24. Status of the third molars in the 20- to 21-year-old Finnish university population. J Am Coll Health 1985 Dec;34(3):127-129.
  25. The prevalence of third molars in a Swedish population. An epidemiological study. Community Dent Health 1988 Jun;5(2):121-138.
  26. Our third molar teeth: Their eruption, presence and absence. Dent Cosmos 1936 Jul;78(7):750-762.
  27. International variability of ages at menarche and menopause: patterns and main determinants. Hum Biol 2001 Apr;73(2):271-290.
  28. Stone age man's dentition. Am J Orthod 1954 Apr;40(4):298-312, 373-383 and 462-475.
  29. The adaptive value of dental crowding: a consideration of the biologic basis of malocclusion. Am J Orthod 1982 Jan;81(1):38-42.
  30. The incidence of impacted teeth. A survey at Harlem hospital. Oral Surg Oral Med Oral Pathol 1970 Feb;29(2):237-241.
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