A dental condition where by the patient has missing teeth as a result of their failure of development. The most common missing tooth is the third molars, or known as wisdom tooth. Hypodontia can be due to genetic or environmental factors. It is been reported in association with low birth weight, increased maternal age and etc. Continue reading →
Midface dysplasia is a cardinal characteristic of persons with Down Syndrome (DS). Nose malformations including a flat broad bridge of the nose has been reported in 59-78% of these individuals. Ear malformations, including “lop” ears, low-set ears and ears with a flat or absent helix have been reported in 54%. Eye malformations are common. Epicanthal folds with slanting almond-shaped eyes (narrow palpebral tissue slanting toward the midline), which was responsible for the term mongoloid, are reported in 78%. Strabismus (cross eyes) is reported in 14-54% and nystagmus (constant involuntary cyclical movement of the eyeballs) and refractive errors are also common. The majority of persons with Down Syndrome exhibit brachycephaly (broad, short head) and lack of supraorbital ridges and hypotelerism (secondary to hypoplasia of the central face) are common findings. Absence of frontal sinuses and absent or reduced maxillary sinuses have been reported. Nasal septum or nasal conchal deviations are often observed which can produce a partially obstructed or narrow air passage and can contribute to the problem of mouth breathing. Continue reading →
Macrodontia is derived from the word “macro” which means large and “dont” which refers to tooth or teeth. Macrodontia means a condition whereby a tooth or a group of teeth is abnormally larger than usual. We are not talking about the “bunny teeth” that we had when we were about 6-7 years old, when our 2 upper front teeth has just erupted. The head and jaws of a child that age will continue to grow, and soon the 2 front teeth will no longer seem protruding and large.