Following the initial osteotomy, a periapical radiograph (PAR) was obtained at a drilling depth of 16 mm.
Radiographic assessment revealed an improper osteotomy trajectory, creating a potential risk of pulpal necrosis to the adjacent tooth. Immediate correction of the drilling axis was therefore deemed essential.
The floor of the nasal fossa and the anterior nasal spine are distinctly visualized, enabling the use of this image to accurately determine the available bone height and to confirm safe surgical parameters.