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Cleft lip is about twice as common in males as females, while cleft palate without cleft lip is more common in females. [2] In 2017, it resulted in about 3,800 deaths globally, down from 14,600 deaths in 1990. [3] [4] Cleft lips are commonly known as hare-lips because of their resemblance to the lips of hares or rabbits. [5]
Cleft lip and/or palate is a congenital abnormality that is seen frequently around the world. On average, about 1 in every 500-750 live births result in a cleft (Hardin-Jones, Karnell, & Peterson-Falzone, 2001). Furthermore, in the U.S., the prevalence for cleft lip with or without cleft palate (CL +/- P) is 2.2 to 11.7 per 10,000 births. Cleft ...
However, when growth of the mandibular process is impeded, a lip pit occurs. Lip pits begin to develop on day 36. Cleft lip begins to develop on day 40, and cleft palate emerges on day 50 of development. [3] There are three types of lip pits, which are classified according to their location: midline upper, comissural, and lower lip.
A cleft palate is also corrected with surgery, and may involve the use of tympanostomy tubes. If needed, an individual will undergo orthognathic treatment and/or orthodontic treatment after facial development is complete. [2] Since hearing loss is frequently associated with SCS, it is recommended that audiology screening persist throughout ...
Cleft chins can be presented in a child when neither parent presents a cleft chin. Cleft chins are common among people originating from Europe, the Middle East and South Asia. [21] There is a possible genetic cause for cleft chins, a genetic marker called rs11684042, which is located in chromosome 2. [22]
A unilateral cleft lip is much more common. Clefting of the maxillary alveolus tends to accompany the cleft of the lip, and thus may affect the center (with a median cleft lip) or one or both sides (in unilateral or bilateral paramedian cleft lip, respectively). Cleft palate does not have laterality in the same sense that the cleft lip does.
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Cleft lip and palate, a congenital deformity; Cleft chin, a dimple on the chin; Pudendal cleft, part of the vulva; Intergluteal cleft, the groove between the buttocks;