15 Questions
Which of the following factors is classified as a teratogen in causing developmental defects of teeth?
Radiation
What is the classification of developmental disturbance of teeth which includes abnormalities in number?
Hyperdontia
In Mandelian inheritance, what is received from each parent?
One gene of each pair
What is the main difference between congenital and tarda developmental defects of teeth?
Manifestation time
Which classification of developmental disturbance of teeth includes abnormalities in shape such as gemination and fusion?
Abnormalities in shape
What is the term used to refer to an excess tooth that is not morphologically similar to any normal teeth?
Hyperdontia
Which type of supernumerary teeth appears before the deciduous dentition?
Natal
In Cleidocranial dysplasia, what dental abnormality is characterized by delayed eruption of permanent teeth and many unerupted supernumerary & supplemental teeth?
Decrease in number of teeth (hypodontia)
What is the abnormality characterized by abnormal large teeth, with a disproportion between the size of teeth and the size of the jaw called?
Macrodontia
Which type of abnormality results from the union of two adjacent enamel organs, leading to a tooth with two roots and two root canals?
Fusion
Which type of supernumerary teeth erupt during the first month of life and must be differentiated from deciduous dentition by x-ray?
Neonatal
In Cleidocranial dysplasia, what dental abnormality is characterized by delayed shedding of deciduous teeth and teeth with conical shape?
Decrease in number of teeth (hypodontia)
What is the abnormality characterized by abnormal small teeth, with a disproportion between the size of teeth and the size of the jaw called?
Microdontia
Which type of abnormality is characterized by two teeth joined along their roots by cementum without dentin, often due to trauma or crowding of teeth?
Concrescence
What is the false condition characterized by failure of eruption rather than failure of formation of single tooth or group of teeth called?
False Anodontia
This quiz covers the classification of developmental defects of teeth, including the distinctions between congenital and tarda defects, as well as the categorization based on etiology such as hereditary and environmental factors. It also delves into teratogens and their classification into local and systemic factors.
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