CLINICAL MEDICINE

Detailed explanation-1: -The nasal septum is a radiopaque landmark visible on maxillary central incisor periapical images.

Detailed explanation-2: -The anterior wall as three major landmarks: (1) the thin canine fossa; (2) the infraorbital foramen located in the midsuperior region; and (3) the infraorbital groove [3, 5, 6]. The posterior wall is formed by the infratemporal surface of the maxilla [3]. It forms the anterior border of the pterygopalatine fossa [5].

Detailed explanation-3: -The mesial aspect of the maxillary central incisors is triangular. The base is located at the cervix and the apex at the incisal ridge. A characteristic feature of these specific incisors is that the incisal ridge of the crown and the center of the tooth are perfectly aligned.

Detailed explanation-4: -Maxillary Tuberosity. (Radiopaque) The extension of the alveolar bone behind the molars and marks the posterior limits of the maxillary arch.

Detailed explanation-5: -Maxillary tuberosity – The maxillary tuberosity is the rounded end of the alveolar process of the maxilla. This radiopaque structure appears bilaterally on maxillary molar periapical images and often on maxillary premolar periapical images and molar bitewings.