Lateral skull radiograph of a 3-year-old female Bruce's green pigeon with a bony opacity (white arrow) proliferating from the dorsal premaxilla
As the jaws are occluded, the anterior end of the dentary is partially covered by the premaxilla
and the maxilla.
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 jaw bones, the premaxilla
and dentary, on the blind side (Fig.
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
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.
, maxillary 3rd molar region and maxillary sinus.4,5
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.
is incomplete and runs posteriorly along the dorsal surface of the snout forming a narrow bar between the maxilla and frontal.