18 Questions
Which dental anomaly is characterized by having no pulp chamber but a canal for saliva to enter?
Paramolar tubercle
What type of dental anomaly may manifest as a deep pit in the lingual surface of incisors?
Anodontia
Which dental anomaly is associated with occlusal tables being pinched together and having many pits and fissures?
Macrodontia
What type of dental anomaly is characterized by enamel pearls in the tooth structure?
Opalescent dentin
Which dental anomaly may lead to teeth with unusually large or small roots?
Macrodontia
What type of dental anomaly can result in very small roots due to trauma or altered development?
Delayed eruption
What is the most common treatment option for microdontia?
Enameloplasty
Which condition is characterized by the abnormal enlargement of a single tooth, such as a peg-shaped lateral incisor?
Macrodontia
What might be the etiology of anodontia in some cases?
Hereditary ectodermal dysplasia
What is the most likely clinical presentation of paramolar tubercle?
Deep grooves on the buccal surface of teeth
How does microdontia differ from macrodontia?
Microdontia involves small teeth and normal jaw, while macrodontia involves big teeth and big jaw.
What is a possible outcome of the hyperactivity of dental lamina during tooth development?
Premature eruption of additional tooth bud
What is the term used to describe the condition where teeth fail to erupt due to systemic disturbances?
Pseudo Anodontia
Which theory explains the loss of teeth as a part of the evolutionary process?
Theory of Atavism
In which condition do teeth fail to erupt from delayed eruption?
Anodontia
What does the term 'Macrodontia' refer to in dental anatomy?
Large teeth with normal jaw size
Which dental anomaly is characterized by an extra structure known as Paramolar Tubercle?
Macrodontia
What is the term used to describe the condition of having fewer teeth present than normal, along with retained deciduous teeth?
Anodontia
Study Notes
Developmental Anomalies
- Microdontia: small teeth, small jaw, proportional in size, fewer teeth, and normal thickness of enamel and dentin.
- Anodontia: absence of teeth, can be true (congenital) or pseudo (failed eruption due to systemic disturbances).
- Macrodontia: large teeth, large jaw, proportional in size, and larger pulp chamber and canal.
Varieties of Macrodontia
- True Generalized Macrodontia: big teeth, big jaw, proportional in size, and larger pulp chamber and canal.
- Relative Generalized Macrodontia: normal-sized teeth, normal-sized jaw, and fewer teeth.
- Macrodontia of a Single Tooth: peg-shaped lateral incisors or central incisors.
Anodontia
- True Anodontia: congenital absence of teeth.
- Pseudo Anodontia: failed eruption of teeth due to systemic disturbances (e.g., hypo-function of pituitary/thyroid gland, dystosis, Crouzon syndrome).
- False Anodontia: missing teeth due to extraction.
Etiology of Anomalies
- Hereditary ectodermal dysplasia (tooth buds didn't form or odontogenesis didn't happen).
- Hyperpituitarism (overactive pituitary gland).
- Inheritance and hormonal imbalance.
- Atavism theory (teeth are lost due to the process of evolution).
Other Anomalies
- Paramolar Tubercle: a type of macrodontia with a resemblance to a tooth in a tooth.
- Mulberry Molars: dwarfed, rough, and hypo-plastic crowns with thin enamel and prominent dentin.
- Enamel Pearls: anomalies in shape and form.
- Anomalies in Root: unusually large or small roots, short truncated roots, or extra long roots.
Test your knowledge on dental anomalies and abnormalities, including Oligodontia, anodontia, microdontia, supernumerary teeth, and various etiologies behind these conditions. Learn about the theories of atavism and the causes of pseudo anodontia and true anodontia.
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