What is pneumatization of the sinus?
Sinus pneumatization is a continuous physiological process that causes the paranasal sinuses to increase in volume [5]. Sinuses give resonance to voice, contribute to the shape of the face, and provide some degree of warmth and humidification to inspired air [6].
Which sinus Pneumatized first?
Results: The ethmoidal sinuses was the first pneumatized in 100% (46/46) of newborn children. And 45.7% (21/46) of maxillary sinuses showed pneumatization during the first month of life and 97.8% (45/46) were pneumatized at 7 – 12 months. The pneumatized sphenoid sinuses was first identified as early as 4 months.
What is pneumatization of frontal sinus?
Primary pneumatization of the frontal sinus occurs around the sixteenth week of gestation. The frontal sinus develops as a smooth mucosal pocket from single or multiple extensions of the frontal recess or ethmoid infundibulum in the middle meatus.
What does the word pneumatization mean?
: the presence or development of air-filled cavities in a bone pneumatization of the temporal bone.
When does maxillary sinus Pneumatization occur?
Normally pneumatization of the sinus complete with the full eruption of the permanent teeth when the sinus floor extends below the hard palate level 4–5 mm below the floor of the nasal cavity at the age of 12 (Scuderi et al., 1993).
What is pneumatization of sphenoid sinus?
In sellar type of sphenoid sinus, pneumatization extends beyond the tuberculum sella into the body of the sphenoid and even as far as the clivus and anterior and medial walls can be removed easily permitting total exposure of the base of sella during transsphenoidal approach (Carter et al.).
What is Pneumatization of the middle turbinates?
Turbinate pneumatization (TP) is the most commonly observed anatomical variation of the lateral nasal wall. Although it is frequently seen in the middle turbinate, it is less frequently seen in the superior turbinate. Inferior TP is rarely seen and there are few cases reported in the literature.
When does pneumatization of the ethmoid sinus begin?
The maxillary and ethmoid sinuses are present at birth. Pneumatization of the sphenoid sinuses begins at about 2 to 3 years of age and is usually complete by about age 5. Frontal sinus pneumatization varies considerably, beginning at about 3 to 7 years of age and finishing by age 12 years.
What is the normal anatomy of the ethmoid sinus?
Axial image showing normal ethmoid sinus anatomy. Arrows point to the lateral attachment of the basal lamellae to lamina papyracea separating anterior and posterior ethmoid sinuses (AE: anterior ethmoid, PE: posterior ethmoid, NS: nasal septum, SpS: sphenoid sinus)
How are the sinuses of the nose divided?
It is divided in the midline by the nasal septum. On each side, it is flanked by the maxillary sinuses, and roofed by the frontal, ethmoid, and sphenoid sinuses, in an anterior to posterior fashion. While seemingly simple, sinonasal anatomy is composed of intricate and subdivided air passages and drainage pathways that connect the sinuses.
What causes narrowing of the maxillary sinus ostuim?
Ethmoid bulla air cells can demonstrate variable pneumatization. Axial image with arrow pointing to an infraorbital ethmoid air cell (Haller cell). If present, a Haller cell can cause narrowing of the infundibulum and maxillary sinus ostuim potentially causing obstruction.