Abstract
The maxilla is generally known as a site where anatomical limitations make it difficult to obtain sufficient bone volume. A large amount of bone exists in the canine region between the anterior margin of the maxillary sinus and the piriform aperture margin. Although this region is crucial for implant treatments, there have not been any reports on morphological studies of the region. In this study, we investigated the morphology of the canine region based on CT, and also the morphology and position of the maxillary sinus located posterior to the canine region.
The results were as follows:
1. In the area above the anterior nasal spine, the higher the level, the smaller the mesio-distal length and the bucco-lingual width tended to become.
2. In the area above the anterior nasal spine, the mesio-distal length and the bucco-lingual width tended to be smaller in female patients than in male patients.
3. In the area above the anterior nasal spine, no significant differences in mesio-distal length and buccolingual width were observed between dentulous and edentulous jaws.
4.The morphology of the maxillary sinus was mainly of an inverse-trapezoidal, circular, or triangular form.
5.The position of the anterior wall of the maxillary sinus was most frequently found at the site corresponding to the second premolar.
Through this study, we have reconfirmed that the canine region is vital for implant treatments in the maxilla.
