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Hyperdontia is the condition of having supernumerary teeth, or teeth that appear in addition to the regular number of teeth (32 in the average adult). They can appear in any area of the dental arch and can affect any dental organ .
Hyperdontia is the development of extraneous teeth. It occurs in 1–3% of Caucasians and is more frequent in Asians. [65] About 86% of these cases involve a single extra tooth in the mouth, most commonly found in the maxilla, where the incisors are located. [66] Hyperdontia is believed to be associated with an excess of dental lamina.
Hyperdontia is the presence of a higher-than-normal number of teeth. Hypodontia is the lack of development of one or more teeth. Oligodontia may be used to describe the absence of 6 or more teeth.
The proposed explanation for this at the time was that shovel-shaped incisors were stronger than non-shovel shaped incisors, resulting in the evolution of shovel-shaped incisors in regions where having stronger teeth would provide an evolutionary advantage.
Additionally, the evolution and reduction in the jaw has left little room for the third molar, or wisdom tooth, to form. As a result, many individuals choose to remove them through surgery. One of the defining features among Homo sapiens is the presence of a chin. A protruding chin was absent in archaic hominids, as well as Neanderthals ...
Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution. [8] These body parts can be classed as additional to the required functioning of the body. In human anatomy, the vermiform appendix is sometimes classed as a vestigial remnant.
This phenomenon is called hyperdontia and is often erroneously referred to as "a third set of teeth." These teeth may erupt into the mouth or remain impacted in the bone. Hyperdontia is often associated with syndromes such as cleft lip and cleft palate, tricho-rhino-phalangeal syndrome, cleidocranial dysplasia, and Gardner's syndrome. [5]
Hypodontia is defined as the developmental absence of one or more teeth excluding the third molars.It is one of the most common dental anomalies, and can have a negative impact on function, and also appearance.