Environmental Causes
1. Alteration during the development of the tooth:
Abnormalities of teeth that are caused by environmental factors during the development of teeth have a long lasting effect
· Enamel hypoplasia is a case in which the amount of enamel that is formed during tooth development is not sufficient
· Dental Fluorosis is a condition, which is caused by ingesting excessive amounts of Fluoride and results in the formation of teeth that are brown or black in colour or sometimes are pitted.
· Enamel hypoplasia is a case in which the amount of enamel that is formed during tooth development is not sufficient
· Dental Fluorosis is a condition, which is caused by ingesting excessive amounts of Fluoride and results in the formation of teeth that are brown or black in colour or sometimes are pitted.
2. Destruction after development of the tooth:
· Attrition is a case when there is a loss of tooth structure by mechanical forces acting on the tooth from opposing teeth.
· Abrasion is the loss of the tooth structure due to mechanical forces acting on it from a foreign element.
· Erosion is the process where the tooth structure deteriorates due to chemical dissolution by acids of bacterial origin.
· Abfraction is the loss of tooth structure from flexural forces.
· Abrasion is the loss of the tooth structure due to mechanical forces acting on it from a foreign element.
· Erosion is the process where the tooth structure deteriorates due to chemical dissolution by acids of bacterial origin.
· Abfraction is the loss of tooth structure from flexural forces.
3. Discolouration:
This is a state where the teeth lose their original colour because of substances like tea, coffee, tobacco and sometimes medications as well such as Tetracycline.
4. Eruption Alteration:
This is the case when the tooth stops eruption, and when this happen, the tooth is said to be impacted. The most common cause of tooth impaction is the lack of space in the mouth for the tooth to actually erupt and develop.