1. Malocclusion: This refers to misalignment of the teeth, where the upper and lower teeth do not fit together properly when biting or chewing. It can cause difficulties in eating, speaking, and can lead to jaw pain or temporomandibular joint disorder (TMJ).
2. Tooth impaction: This occurs when a tooth fails to fully emerge from the gum line or does not erupt at all. It commonly affects wisdom teeth, but can also occur with other teeth. Impacted teeth can cause pain, swelling, and can lead to infection or damage to adjacent teeth.
3. Tooth agenesis: This is a condition where one or more teeth fail to develop, resulting in gaps or spaces in the dental arch. It can be congenital or caused by genetic factors. Tooth agenesis can affect the appearance, function, and alignment of the remaining teeth.
4. Supernumerary teeth: Also known as hyperdontia, this condition involves the presence of extra teeth in the mouth. These additional teeth can be fully formed or smaller and malformed. Supernumerary teeth can cause crowding, misalignment, and can interfere with the eruption of permanent teeth.
5. Enamel hypoplasia: This is a defect in the enamel formation, resulting in thin or insufficient enamel on the teeth. It can be caused by genetic factors, malnutrition, certain medications, or systemic conditions. Enamel hypoplasia can make the teeth more susceptible to cavities, sensitivity, and discoloration.