Upper Lip Fistulas: Three New Cases

Abstract

A simple surgical excision is the treatment of choice in these cases, in which the anatomy is preserved; this fact is more consistent with a completed but aberrant development than with focal dysgenesis.

The developmental relationship between the deciduous dentition and the oral vestibule in human embryos

“…According to Adloff (1901), the supernumerary teeth located externally to the dental arch can be correlated with the remnants of reptilian teeth. The defective fusion of facial outgrowths can cause some developmental anomalies of the upper vestibule and defects of the midline structures, such as a fistula related to the upper lip frenulum (Sancho et al 2002) or other anomalies and anatomical variations of frenulum labii superioris. The faulty development of epithelial structures in the developing oral vestibule might play a role in the appearance of cysts and dental pearls located at the buccal side of the dental arch.…”

Fistule congénitale médiane de la lèvre supérieure associée à un syndrome de Goldenhar : à propos d’un cas

“…Leur incidence est de 0,001 % dans la population générale. Les fistules de la lèvre supérieure sont encore plus rares avec moins de 29 cas décrits dans la littérature [2,3]. Il existe plusieurs théories quant à leur formation mais la plupart s'accorde à dire qu'il s'agit de vestiges d'une inclusion ectodermique durant le développement embryonnaire des bourgeons faciaux [4].…”

“…Dans l'article de Sancho et al [3], trois fistules sont décrites comme étant borgnes et n'atteignant pas la cavité orale. L'aspect borgne de ces fistules va en faveur de l'hypothèse selon laquelle ces fistules sont dues à un échec du processus de fusion des bourgeons mésodermiques [11,12].…”

Congenital Isolated Midline Sinus of the Upper Lip: Clinical and Embryological Approaches

“…We will not discuss their pathogeny, which may involve fusion anomalies in the mandibular processes. Upper-lip sinus is even rarer; only 27 cases have been reported in the English literature (Sancho et al, 2002). They can be associated with other midline malformations such as median cleft, double frenulum, sinus of the frenulum, nasal dermoid cyst, or hypertelorism (Mackenzie, 1970;Parisier and Birken, 1973).…”