ISSN : 0376-4672
Purpose: This study was performed to survey the incidence and imaging characteristics of the antral exostoses in a Korean population. Materials and methods: The cone-beam computed tomographic images of 5,268 patients were reviewed for the presence of antral exostoses. Incidence, location, shape, structure and dimension were evaluated. Gender and side difference were analyzed by chi-squared test. Results: Ninety eight antral exostoses were found in 78 (1.5%) out of 5,268 patients. Gender and sides showed no statistically significant differences. Antral exostoses was often found in the lateral wall and floor of the maxillary sinus, accounting for 58.2% and 38.8% of the exostoses, respectively. Most exostoses had broad base and were composed of spongy bone surrounded by compact bone. The mean dimension was 9.1(W)*4.9(D)*5.3(H) mm. Conclusion: Antral exostoses is not uncommon in a Korean population. The identification of antral exostoses is clinically significant to avoid unnecessary examination and treatment. It also needs to be examined carefully in the implant planning or sinus lift procedure.
1. Ohba T, Langlias RP, Langland OE. Antral exostosis in panoramic radiographs. Oral Surg Oral Med Oral Pathol. 1993;76(4):530-3.
2. Lana JP, Carneiro PM, Machado Vde C, de Souza PE, Manzi FR, Horta MC. Anatomic variations and lesions of the maxillary sinus detected in cone beam computed tomography for dental implants. Clin Oral Implants Res. 2012;23(12):1398-403
3. Borie E, Watanabe PC, Orsi IA, Fuentes R. Idiopathic bilateral antral exostoses: A rare case in maxillary sinus. Int J Surg Case Rep. 2014;5(9):624-7.
4. Herd JR. Exostoses of the maxillary sinus wall. A diagnostic problem. Aust Dent J. 1974;19(4):269-73.
5. Naitoh M, Suenaga Y, Kondo S, Gotoh K, Ariji E. Assessment of maxillary sinus septa using conebeam computed tomography: etiological consideration. Clin Implant Dent Relat Res. 2009;11Suppl 1:e52-8.
6. Gibilisco JA. Safne’s oral radiograhhic diagnosis. 5th ed. Philadelphia, WB Saunders, 1985:123-4.
7. Büyükakyüz N, Ergun S, Olgaç V, Tanyeri H. Heterotopic ossification in the maxillary sinus. J Craniofac Surg. 2008;19(3):684-6.
8. Nass Duce M, Talas DU, Ozer C, Yildiz A, Apaydin FD, Ozgür A. Antrolithiasis: a retrospective study. J Laryngol Otol. 2003;117(8):637-40.
9. Haffey T, Woodard T, Sindwani R. Paranasal sinus exostoses: an unusual complication of topical drug delivery using cold nasal irrigations. Laryngoscope. 2012;122(9):1893-7
10. Adelson RT, Kennedy DW. Paranasal sinus exostoses: possible correlation with cold temperature nasal irrigation after endoscopic sinus surgery. Laryngoscope. 2013;123(1):24-7.
11. Ramakrishnan JB, Pirron JA, Perepletchikov A, Ferguson BJ. Exostoses of the paranasal sinuses. Laryngoscope. 2010;120(12):2532-4.
