Группа авторов

Practical Procedures in Implant Dentistry


Скачать книгу

Three‐dimensional imaging via cone beam computed tomography (CBCT) scans provide more accurate assessment of both foramen and canal morphology, which can vary significantly [3], and allow for evaluation of available bone volume.

Photos depict three-dimensional versus two-dimensional view of incisive foramen.

      The nasal cavity is very well vascularised, with the sphenopalatine artery, a branch of the internal maxillary artery, providing the largest contribution of arterial supply. It is a branch of the sphenopalatine artery that anastomoses with the greater palatine artery via the incisive canal. The nasopalatine nerve, a branch of the maxillary division of the trigeminal nerve (CN V2), provides sensory input for the nasal cavity and follows the path of the sphenopalatine artery through the incisive canal where it anastomoses with the greater palatine nerve.

      7.3.1 Importance in Oral Implantology

Photo depicts the location of the infraorbital foramen. The location of the infraorbital foramen is circled in yellow and can be found far superior to the maxillary occlusal plane.

      7.4.1 Importance in Oral Implantology

      Due to its superior location relative to the position of the alveolar process, the infraorbital foramen is not typically encountered in the surgical placement of dental implants. The infraorbital nerve can, however, be damaged by flap reflection and the use of retractors when performing a lateral window technique sinus lift and/or in cases of extensive maxillary ridge atrophy. Pulpal and soft tissue anaesthesia of the maxillary premolars, canine, and incisors may be achieved via the infraorbital block, which delivers anaesthetic to the infraorbital foramen as referenced 1 cm below the inferior orbital margin.

Photos depict changes in the presentation of the maxillary sinus.

      The maxillary sinus in adults is a hollow pyramidal shaped space in the maxilla approximately 15 mL in volume [13], roughly 3.5 cm high × 2.4 cm wide × 3.5 cm antero‐posteriorly [14]. The sinus communicates with the nasal cavity via an opening high on the medial wall of the sinus called the ostium, which is an opening approximately 3 mm in diameter [15] in the middle meatus or space located just superior to the inferior concha.