maxilla


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maxilla

1. the upper jawbone in vertebrates
2. any member of one or two pairs of mouthparts in insects and other arthropods used as accessory jaws

maxilla

[mak′sil·ə]
(anatomy)
The upper jawbone.
The upper jaw.
(invertebrate zoology)
Either of the first two pairs of mouthparts posterior to the mandibles in certain arthropods.
References in periodicals archive ?
In this descriptive, observational, retrospective, cross-sectional study, 236 CBCT images of the maxilla were selected from the image database in an imaging center from Cali/Colombia.
DCs are most frequently seen in the mandible (70%) and the maxilla (30%) (5).
With the hyrax-type RME, the center of rotation of the maxillae is opened at the point of the PNS, and the tuber maxillae move forward and backward as the A point is located at the same position according to the amount of resorption in the maxilla. With the Alt-RAMEC, the center of rotation of the maxillae is opened at the point of the PNS, and the tuber maxillae move forward more without any resorption in the maxilla.
Jacob et al compared class I and class II sub division 1 malocclusion and found that boys had more prognathic mandibles as compared to girls and Class I had greater mandibular lengths comparatively to Class II sub division 1 in children of French Canadian at age of 15years.7 Eduardo Bernabe et al in their study explored the three skeletal classes and results from their study supported the concept that malocclusions have physical, psychological, and social effects on quality of life.8 In this study the main focus of interest were three components which are cranial base, maxilla and mandible.
However the possible cause is inflammatory reaction of tissue injury.2 Though the pseudotumour is accepted as a benign entity with fibroblastic proliferation which may mimic malignancy due to its occasional aggressive nature, a portion of these pseudtomours may represent actual neoplasia.1 We report a rare case of calcifying inflammatory pseudotumour of maxilla mimicking a malignancy.
Ameloblastoma of the maxilla: CT and MR appearance.
The 3-D computed tomography (CT) examination showed that the body of the maxilla on right side along with lateral border of pyriform aperture and medial infraorbital margin was missing (Figures 2 and 3).
After the flap was elevated, the tumor outline was visualized and the posterior sections of the maxilla and pterygoid process were resected (Figure 3(b)).
Here we analyze the maxilla of two closely-related species of the Phrynosomatidae from western North America: Uta stansburiana (Common Side-blotched Lizard) and Urosaurus ornatus (Ornate Tree Lizard).
An OPG is showing a solitary diffuse radiolucency approximately of size 4 x 2 cm in the right maxilla extending anterio-posteriorly from mid-palatal raphae to the distal surface of distal root of 17.