premaxilla


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premaxilla

 [pre-mak´sĭ-lah]
a separate element derived from the median nasal processes in the embryo, which later fuses with the maxilla.

pre·max·il·la

(prē'mak-sil'ă),
1. ☆ official atlternate term for incisive bone
2. The central isolated bony part in a complete bilateral cleft of the lip.
[pre- + L. maxilla, jawbone]

premaxilla

(prē′măk-sĭl′ə)
n. pl. pre·maxillae (-măk-sĭl′ē)
Either of two bones located in front of and between the maxillary bones in the upper jaw of vertebrates.

pre·max′il·lar′y (-măk′sə-lĕr′ē) adj.

pre·max·il·la

(prē'mak-sil'ă)
1. Synonym(s): incisive bone.
2. Central isolated bony part in a complete bilateral cleft of the lip.
[pre- + L. maxilla, jawbone]
References in periodicals archive ?
Lateral skull radiograph of a 3-year-old female Bruce's green pigeon with a bony opacity (white arrow) proliferating from the dorsal premaxilla.
More specifically, retraction of the premaxilla, presurgical elongation of the columella, correction of the nasal cartilage deformity, alignment of the cleft alveolar segments, increase in the surface area of the nasal mucosal lining, up righting of the columella, and achievement of close approximation of the cleft lip segments are aimed.
The injury caused the loss of teeth 1.1 and 2.1, and the loss of a portion of basal bone in premaxilla area, leaving an edentulous concave that extends 2 x 0,5 cm (Figure 1).
However, there is one case report of sinonasal RDD with osseous destruction of the premaxilla [12].
The premaxilla had two teeth rows, one composed of conical teeth and the other composed of molars (Figure 2(d)).
The jaws of humans--and dogs, salmon, lizards and all other bony vertebrates--contain three key bones: the maxilla and premaxilla of the upper jaw, and the dentary of the lower jaw.
The lower jaw and premaxilla are well mineralized, and there are anterior flanges at the symphysis of the dentaries.
The skull length, measured from the premaxilla to the first vertebra, was 65.28% of the GAD, and the caudal vertebra length was 38.89% of the GAD.
Each premaxilla is incomplete and runs posteriorly along the dorsal surface of the snout forming a narrow bar between the maxilla and frontal.