Özet:

Aim: Pneumatization of maxillary sinus at maxillary posterior region, alveolar bone tendency to resorption together with increasing of age and insufficient bone density causes various difficulties in dental implant placement. Whether the implant will be put or not simultaneously together with sinus lifting process at atrophic maxillary depends on the factors as the quality of the bone, the residual bone height and the primary stability. The aim of this study is to assess the relationship between sinus floor cortication and antral pathology and to assess the frequency of sinus floor cortication types on cone beam computed tomography images. Material and Method: The study group consists of a total of 150 persons, 64 male and 86 females, that an average age is 48.63 years. CBCT images that consist of right and left maxillary sinuses have been examined. Antral pathologies and sinus floor cortications were compared with statistical chi-square analysis method. Results: According to the sinus floor cortication classification, it was stated that among maxillary sinuses Type 1 was present in 158 sinuses, Type 2 was present in 60 sinuses, Type 3 was present in 22 sinuses and Type 4 was present in 60 sinuses. There was statistically significant relationship between antral pathology and sinus floor cortication (p<0.05). Conclusion: This classification that is based on the degree of the sinus floor cortication is valuable in order to evaluate whether SAP (lateral window technique or transcrestal approach) is clinically necessary or not and to help the clinic in the suitability statement of implant placement and sinus lifting process, simultaneously.

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