Pattern of mandibular third molar impaction in patients attended the Hawler College of Dentistry: a retrospective radiographic study

  • Katayon N. Kurchid MBCHB MSc. (Radiologist) Assistant Lecturer. Radiology Branch/Department of Surgery/College of Medicine / Hawler Medical University
  • Omed I. Shihab B.D.S MSc. (Oral and Maxillofacial Surgery) Assistant Lecturer. Department of Oral and Maxillofacial Surgery/ College of Dentistry/ Hawler Medical University.
Keywords: Mandibular third molar, impaction, orthopantomogram

Abstract

Back grounds and objectives: The aim of this study was to assess radiographically the angulations and depth of impacted mandibular third molars.

Method: In a retrospective study 163 impacted mandibular third molars of 100 patients were examined on orthopantomograms (OPT) in the College of Dentistry/ Hawler Medical University during 2008. From these orthopantomograms the angulations (mesioangular, distoangular, vertical, and horizontal) and the depth (types A, B, and C) of the impacted mandibular third molars were recorded. The frequencies of unilateral and bilateral impaction were also recorded.

Results: The average age of the patients was 26.5 + 5 ranging from 20-40 years with a median of 25 years. Fifty eight (58%) of the cases were female and 42 (42%) were male. The frequency of mesioangular, distoangular, vertical and horizontal impactions were 73 (44.8%), 37 (22.6%), 28 (17.2%), and 25(15.4%) successively. The depths of the impactions were 45 (27.6%) depth A, 74 (45.4%) depth B, and 44 (27%) depth C.The frequency of unilateral impaction was 26 (26%) and that of bilateral impaction was 74 (74%).

Conclusion: Impacted mandibular third molars are more common in female. Mesioangular impaction is more common followed by distoangular. Depth B most common and most of the patients have bilateral impaction.

References

- Andreasen JO. Epidemiology of third molar impactions. In: Andreasen JO, Petersen JK, Laskin DM, eds: Textbook and Color Atlas of Tooth Impactions. Copenhagen: Munksgaard 1997: 222–223.

- Peterson LJ. Principles of management of impacted teeth. In: Peterson LJ, Ellis III E, Hupp JR, Tucker MR, editors. Contemporary oral & maxillofacial surgery. 3rd ed. St. Louis: Mosby; 1998. p 215-48.

- Shepherd JP. The third molar epidemic. Br Dent J 1993; 175:85.

- Hattab FN, Rawashdeh MA, Fahmy MS. Impaction status of third molars in Jordanian students. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1995;79:24-9

- Haider Z, Shalhoub SY. The incidence of impacted wisdom teeth in a Saudi community. Int J Oral Maxillofac Surg 1986: 15: 569–571.

- Hugoson A, and Kugelberg C. The Prevalence of Third Molar Impactions in a Swedish Population: an Epidemiological Study. Community Dent. Health 1988; 5:121-38

- Murtomaa H, Turtolaa L, ylipaavalniemr P, Rytomaa I. Status of the third molars in the 20–21-year-old Finnish university population. J Am Coll Health 1985: 34: 127–129.

- Venta I, Turtola L, Murtomaa H, Ylipaavalniemmi P. Third Molars as an Acute Problem in Finnish University Students. Oral Surg Oral Med Oral Pathol 1993; 76:135-40.

- Gbotolorum OM, Olojede AC, Arotiba GT, Ladeinde AL, Akinwande JA, Bamgbose BO. Impacted mandibular third molars: presentation and postoperative complications at the Lagos University teaching hospital. Nig Q J Hosp Med. 2007 Jan-Mar; 17(1): 26-9.

-Quek S.L. Tay C.K. Tay K.H. Toh S.L, et al; Pattern of Third Molar Impaction in a Singapore Chinese Population: A Retrospective Radiographic Survey. Int. J.Oral Maxillofac. Surg. 2003; 32: 548-52.

-Schroeder D.C. Cecil J.C. Cohen M.E. Retention and Extraction of Third Molars in Naval Personnel. Mil. Med. 1983; 148: 50-3.

-Stanley H. Alattar M. Collet W.K. Stringfellow H.R, et al; Pathological Sequelae of Neglected Impacted Third Molars. J. Oral Pathol. 1988; 17: 113-7.

-Sasano T, Kuribara N, Iikubo M, Yoshida A, et al; Influence of an Angular Position and Degree of Impaction of Third Molars on Development of Symptoms: Long Term Follow-Up Under Good Oral Hygiene Condition. Tohoku J. Exp. Med. 2003; 200:75-83.

-Alling CC, Helfrick JF, Alling RD. Impacted teeth. Philadelphia: WB Saunders; 1993.

-Richardson ME. Changes in lower third molar position in the young adult. Am J Orthod Dentofac Orthop 1992; 102: 320-7.

Published
2018-11-04
How to Cite
Kurchid, K., & Shihab, O. (2018). Pattern of mandibular third molar impaction in patients attended the Hawler College of Dentistry: a retrospective radiographic study. Zanco Journal of Medical Sciences (Zanco J Med Sci), 14(1), 67 - 70. Retrieved from https://zjms.hmu.edu.krd/index.php/zjms/article/view/538
Section
Original Articles