An Impacted Malformed Primary Maxillary Central Incisor Diagnosed as a Compound Odontoma.

An odontoma is usually found in the surrounding area of the unerupted permanent tooth bud and rarely adjacent to the primary central incisor. This report presents a case of an unerupted malformed primary central incisor, histologically diagnosed as a compound odontoma. A 5.5 year-old healthy boy presented with an unerupted maxillary left primary central incisor and mild gingival buccal swelling. No history of traumatic injury was recorded. Radiological examination revealed a tooth-like mass with a partially developed root and a malformed crown in the area of the left primary central incisor. Delayed development of the successor left permanent incisor in comparison to the right one was noted. The rational for early surgical intervention to enable normal development and eruption of permanent incisors is described. Clinical and radiographic diagnoses as well as several etiological factors and a differential diagnosis are considered and reviewed.

primary central incisor, impaction. odontoma, ankylosis

1. Ralph E. McDonald , David R. Avery: Dentistry for the child and ado-lescent, 7th ed. St Louis: Mosby Inc; chapter 9, 2000.

2. Gron AMP: Prediction of tooth emergency, J Dent Res, 41: 573–85, 1962.

4. Bodner L, Horowitz Impacted primary incisor: report of case. J Dent Child, 54: 363–4, 1987.

5. Pindborg JJ. Impaction of teeth. In: Pindborg JJ, Pathology of the Den-tal Hard Tissues, 1st ed. Compenhagen: Munkgaard; 241–7, 1970.

6. Uzamis M, Olmez S Er N. Unusual impaction of inverted primary incisor: report of case. J Dent Child, 68: 67–9, 2001.

7. Chaushu S, Sharabi S, Becker A Dental morphologic characteristics of normal versus delayed developing dentitions with palatally displaced canines. Am J Orthod Dentofacial Orthop, 121: 339–46, 2002.

8. Darwish SM, Salama FS. Impacted primary mandibular central incisors: case report. J Clin Pediatr Dent, 26: 347–9, 2002.

9. Krammer R.M & Williams A.C: the incidence of impacted teeth. Oral Surg, 29: 237, 1970.

10. Lambert M, Rothman DL. Unusual impaction of a primary lateral incisor J Dent Child, 61: 146–8, 1994.

11. Bianchi SD, Roccuzzo M. Primary impaction of primary teeth: a review and report of three cases. J Clin Pediatr Dent, 15: 165–8, 1991.

12. Y. Otsuka T, Mitoml M. Tomizawa. A review of clinical features in 13 cases of impacted primary teeth. Inter J Pedia Dent, 11: 37–63. 2001.

13. Bimstein, E. Root dilacerations and stunting in two unerupted primary incisors. J Dent Child, 45: 223–5, 1978.

14. Shafer WG, Hine MK, Levy BM. A Textbook of Oral Pathology, 4th ed. Philadelphia: W. B. Saunders Company, 308–11, 1983.

15. Alber, D.D. Ankylosis of teeth in the developing dentition. Quintes-sence Int, 17: 303–8, 1986.

16. Frazier-Bowers SA, Koehler KE, Ackerman JL, Proffit WR. Primary failure of eruption: further characterization of a rare eruption disorder. Am J Orthod Dentofacial Orthop, 131: 578, e1–11, 2007.

17. Brunetto AR, Turley PK, Brunetto AP, Regattieri LR, Nicolau GV. Impaction of a primary maxillary canine by an odontoma: surgical and orthodontic management. Pediatr Dent, 13: 301–2, 1991.

18. Stajcic ZZ. Odontoma associated with a primary tooth. Journal of Pedodontics, 12: 415–20, 1988.

19. Yeung KH, Cheung RC, Tsang MM. Compound odontoma associated with an unerupted and dilacerated maxillary primary central incisor in a young patient. Int J Paediatr Dent, 13: 208–12, 2003.

20. Katz RW. An analysis of compound and complex odontomas. J Dent Child, 56: 445–9, 1989.

21. Kilpatrick NM, Hardman PJ, Welbury RR. Dilaceration of a primary tooth. Inter J Pedia Dent, 1: 151– 3, 1991.

22. Motokawa W, Braham RL, Morris ME, Tanaka M. Surgical exposure and orthodontic alignment of an unerupted primary maxillary second molar impacted by an odontoma and a dentigerous cyst: a case report. Quintessence Int, 21: 159– 62, 1990.

23. Yassin OM. Delayed eruption of maxillary primary cuspid associated with compound odontoma. J Clin Pediatr Dent, 23: 147–9, 1999.

24. Andreasen JO. Injuries to developing teeth. In: Andreasen JO, Andreasen FM, editors. Textbook and color atlas of traumatic injuries to the teeth, 3rd ed. Copenhagen: Mosby; 457–94, 1994

25. Shaked I, Peretz B, Ashkenazi M. Development of odontoma-like mal-formation in the permanent dentition caused by intrusion of primary incisor—a case report. Dent Traumatol, 24: e395–7, 2008.

26. Nelson-Filho P, Silva RA, Faria G, Freitas AC. Odontoma-like malfor-mation in a permanent maxillary central incisor subsequent to trauma to the incisor predecessor. Dent Traumatol, 21: 309–12, 2005.

27. Amailuk P, Grubor D. Erupted compound odontoma: case report of a 15- year-old Sudanese boy with a history of traditional dental mutila-tion. Br Dent J, 204: 11–4, 2008.

28. Rasmussen P, Kotsaki A. inherited primary failure of eruption in the primary dentition: report of five cases. J Dent Child, 64: 43–7, 1997.

29. Duncan WK, Ashrafi MH, Meister F Jr, Pruhs RJ Management of the nonerupted maxillary anterior tooth. J Am Dent Assoc, 106: 640–4, 1983.

30. Cole B, Welbury R. Malformation in the primary and permanent denti-tion following trauma prior to tooth eruption: a case report. Endod Dent Trauma, 15: 194–6, 1999.