A 15-year old boy shows an inverted pear shaped radiolucency between the upper central incisors. The teeth are normal in all aspects The most likely diagnosis is________________?

A 15-year old boy shows an inverted pear shaped radiolucency between the upper central incisors. The teeth are normal in all aspects The most likely diagnosis is________________?

A. Globulomaxillary cyst
B. Nasopalatine cyst
C. Aneurysmal cyst
D. Dentigerous cyst

A 4-year old child has a normal complemented of primary teeth but they are gray and exhibit extensive occlusal and incisal wear. Radiographic examination indicates extensive deposits of secondary dentin in these teeth. Most likely this condition is______________?

A 4-year old child has a normal complemented of primary teeth but they are gray and exhibit extensive occlusal and incisal wear. Radiographic examination indicates extensive deposits of secondary dentin in these teeth. Most likely this condition is______________?

A. Neonatal hypoplasia
B. Amelogenesis imperfecta
C. Cleidocranial dysplasia
D. Dentinogenesis imperfecta