Aim: To assess the incidence of mandibular second molar impaction and the treatment methods for this condition.
Materials and Methods: A retrospective review of the cases of patients diagnosed with impaction of mandibular molars at the Department of Oral Surgery of the Faculty of Dental Medicine - Plovdiv during the past 11 years was performed.
Results: 962 patients with impaction of mandibular molars were operated on in the analyzed period. This diagnosis is relatively rare in second mandibular molars and represents 0.94% of all cases. Most often, diagnosis is based on clinical evidence of missing molars and on panoramic radiographs. In the cases described by us, only surgical treatment was used.
Conclusion: The treatment of this condition is a challenge which requires an individual approach to each case and an assessment to determine what treatment approach is to be used - surgical or orthodontic.
Dachi SF, Howell FV. A survey of 3,874 routine full-month radiographs. II. A study of impacted teeth. Oral Surg Oral Med Oral Pathol. 1961;14:1165-9. doi: 10.1016/0030-4220(61)90204-3
Bondemark L, Tsiopa J. Prevalence of ectopic eruption, impaction, retention and agenesis of the permanent second molar. Angle Orthod. 2007;77(5):773-8. doi: 10.2319/072506-306.1
Tsukamoto G, Makino T, Kikuchi T, Kishimoto K, Nishiyama A, Sasaki A, et al. A comparative study of odontogenic keratocysts associated with and not associated with an impacted mandibular third molar. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2002; 94(2): 272-5. doi: 10.1067/moe.2002.126888
Vedtofte H, Andreasen JO, Kjaer I. Arrested eruption of the permanent lower second molar. Eur J Orthod. 1999; 21(1): 31-40. doi: 10.1093/ejo/21.1.31
Cassetta M, Altieri F, Di Mambro A, Galluccio G, Barbato E. Impaction of permanent mandibular second molar: A retrospective study. Med Oral Patol Oral Cir Bucal. 2013; 18(4):564-8. doi: 10.4317/medoral.18869
Oliver RG, Richmond S, Hunter B. Submerged permanent molars: four case reports. Br Dent J.1986;160(4):128-30.
Andreasen JO, Kurol J. The impacted first and second molar. In: Andreasen JO, Petersen JK, editors. Textbook and color atlas of tooth impactions. Copenhagen: Munksgaard; 1977. 197-218.
Raghoebar GM, Boering G, Jansen HW, Vissink A. Secondary retention of permanent molars: a histologic study. J Oral Pathol Med. 1989 ;18(8): 427-31. doi: 10.1111/j.1600-0714.1989.tb01338.x
Johnson JV, Quirk GP. Surgical repositioning of impacted mandibular second molar teeth. Am J Orthod Dentofac Orthop. 1987;91(3): 242-51. doi: 10.1016/0889-5406(87)90454-9
Varpio M, Wellfelt B. Disturbed eruption of the lower second molar: clinical appearance, prevalence, and etiology. ASDC J Dent Child. 1988; 55(2):114-8.
Valmaseda-Castellon E, De-la-Rosa-Gay C, Gay-Escoda C. Eruption disturbances of the first and second permanent molars: results of treatment in 43 cases. Am J Orthod Dentofacial Orthop. 1999; 116(6): 651-8. doi: 10.1016/S0889-5406(99)70200-3
Arvystas M.G.: Familial generalized delayed eruption of the dentition with short stature. Oral Surg Oral Med Oral Pathol. 1976; 41(2):235-43. doi: 10.1016/0030-4220(76)90235-8
Tipton RE, Gorlin RJ. Growth retardation, alopecia, pseudo-anodontia, and optic atrophy - the GAPO syndrome:report of a patient and review of the literature. Am J Med Genet. 1984; 19(2): 209-16. doi: 10.1002/ajmg.1320190202
Gorlin RJ, Goltz RW. Multiple nevoid basal-cell epithelioma, jaw cysts and bifid rib: a syndrome. N Engl J Med. 1960; 262: 908-12. doi: 10.1056/NEJM196005052621803
Shapira Y, Borell G, Nahlieli O, Kuftinec MM. Uprighting mesially impacted mandibular permanent second molars. Angle Orthod. 1998; 68(2): 173-8.
Jung YH, Cho BH. Prevalence of missing and impacted third molars in adults aged 25 years and above. Imaging Sci Dent. 2013; 43(4): 219-25. doi: 10.5624/isd.2013.43.4.219
Magnusson C, Kjellberg H. Impaction and retention of second molars: diagnosis, treatment and outcome. A retrospective follow-up study. Angle Orthod. 2009; 79(3): 422-7. doi: 10.2319/021908-97.1
Frank CA. Treatment options for impacted teeth. J Am Dent Assoc. 2000; 131(5): 623-32. 10.14219/jada.archive.2000.0236
McAboy CP, Grumet JT, Siegel EB, Iacopino AM. Surgical uprighting and repositioning of severely impacted mandibular second molars. J Am Dent Assoc. 2003 ;134(11):1459-62. 10.14219/jada.archive.2003.0074
Sawicka M, Racka-Pilszak B, Rosnowska-Mazurkiewicz A. Uprighting Partially Impacted Permanent Second Molars. Angle Orthod. 2007; 77( 1): 148-54. doi: 10.2319/010206-461R.1
Atanasov D. Oral Surgery. Plovdiv: Taf print; 2011.
Shpack N, Finkelstein T, Lai YH, Kuftinec MM, Vardimon A, Shapira Y. Mandibular Permanent Second Molar Impaction Treatment options and outcome. Open J Dent Oral Med. 2013;1(1): 9-14. doi: 10.13189/ojdom.2013.010103
GarcÃa-Calderón M, Torres-Lagares D, González-MartÃn M, Gutiérrez-Pérez JL. Rescue surgery (surgical repositioning) of impacted lower second molars. Med Oral Patol Oral Cir Bucal 2005;10(5):448-53.