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

/pre·max·il·la/ (-mak-sil´ah)
2. the embryonic bone that later fuses with the maxilla to form the incisive bone.

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]

premaxilla (prē´maksil´ə),

n the embryonic structure that forms the anterior part of the maxillae.
premaxilla, floating,
n See premaxilla, loose.
premaxilla, loose,
n 1. (floating premaxilla) the nonunion of the premaxillary process with the lateral maxillary segments, so that the premaxilla is loose, or floating. The position of the loose premaxilla in relation to the lateral maxillary segments varies among patients.
n 2. the administration of a tranquilizing drug, a drug that influences blood clotting time or any other drug that produces a preplanned set of conditions and is administered preceding any dental procedures.

premaxilla

the incisive bone, the bone which bears the upper incisor teeth.

cleft premaxilla
see cleft lip.
References in periodicals archive ?
An enzematous dome shaped growth with few infected ulcers extending from nostril to premaxilla region (Fig.
01 s) and premaxilla swung anteriorly; 5) mouth began closing and maximum depression of the hyoid achieved, synchronized with buccal action; 6) mouth closed and premaxilla retracted to normal position.
Head and snout short, mandibles equal, mouth terminal, lips soft and flexible, and not covering outer row of premaxilla teeth; ventral border of upper jaw straight; posterior edge of maxilla reaching anterior edge of orbit.
In addition, he had thick nasal skin and a deficient premaxilla that also contributed to his lack of tip support (figure 1).
In 1686, Hoffman described the use of a head cap to retract the premaxilla and narrow the cleft.
Asymmetry of the mandible was induced and led to shortening of the premaxilla.
Calyptocephalellidae diagnosable on the basis of the following combination of characters (autapomorphies marked by asterisk): 1) relatively well-developed pterygoid process of the maxilla, 2) unsculptured alveolar region of the labial face of the maxilla dorsoventrally narrow *, 3) premaxilla with anterior portion of palatine shelf well defined in lingual view, 4) atlantal cotyles bean-shaped *, 5) unfused atlas and second presacral vertebra, 6) strong anteroposterior extension of sacral vertebral diapophyses *.
The normal biting pressure or forces are directed from the remaining lowfrocks teeth and transmitted through the upper anterior denture, with resulting resorption of bone and slow auto- rotation & tilting of the denture upward and backward, with the upper anterior teeth becoming less visible and the upper posterior teeth becoming more visible as the denture is rotated from func- tion with bone loss of the premaxilla.
The following anatomical elements were primarily used for identification: premaxilla, dentary, maxilla, articular, and quadrate.
Tongue longer than wide, oval, entire or slightly notched on its posterior end; posterior 3/5 of tongue not adherent to floor of mouth; choanae rounded, concealed or not by palatal shelf of maxillary arch; maxilla and premaxilla toothed; teeth pedicelate, medium-sized, robust and curved posteriad.
For definitive rehabilitation, osseointegrated craniofacial implants (two positioned in the premaxilla in the nasal floor and one in the glabella, if necessary) and a metal support bar to stabilize the prosthesis are best for anchoring a nasal prosthesis to the skull.