J Korean Assoc Maxillofac Plast Reconstr Surg.  2012 Mar;34(2):106-111.

Evaluation of Maxillary Sinus Using Cone-beam Computed Tomography in Patients Who Underwent Le Fort I Osteotomy

• Lee JY
• Kim YI
• Baek YJ
• Hwang DS

Abstract

PURPOSE
The aim of this sturdy was to assess the prevalence and change in pathologic findings in the maxillary sinus by using preoperative and postoperative cone-beam computed tomography (CBCT).
METHODS
The subjects included 83 patients with maxillary sinus abnormalities who underwent orthognathic surgery between January 2010 to December 2010. The CBCT analyses were classified according to the thickness of maxillary sinus membrane; Normal (membrane thickness<2 mm), mucosal thickening (membrane thickness> or =2 mm and <6 mm), partial opacification (membrane thickness>6 mm but not complete), total opacification, and polypoidal mucosal thickening. The diameters of the maxillary sinus ostium on the coronal cross-sectional view were also calculated.
RESULTS
Out of 166 maxillary sinuses in 83 patients, 42 (25.3%) maxillary sinuses before surgery and 37 (22.3%) maxillary sinuses after surgery showed abnormalities. A decrease in the diameters of maxillary ostium was observed after surgery (P<0.05). However, there was no significant difference in mucosal thickness both, preoperatively and postoperatively.
CONCLUSION
The orthognathic surgery didn't deteriorate the maxillary sinus abnormaility. Despite the low prevalence of sinus complications in orthognathic surgery, all the patients should be informed of the possibility of sinusitis that could require the surgical intervention before surgery.

Keyword

Cone-beam CT; Maxillary sinus; Le Fort I osteotomy

MeSH Terms

Cone-Beam Computed Tomography
Humans
Maxillary Sinus
Orthognathic Surgery
Osteotomy
Prevalence
Sinusitis