Chapter-05 Maxillary Sinus and its Dental Implications

BOOK TITLE: Fundamentals of Oral Medicine and Radiology

1. Mani Varghese
2. DN Bailoor
3. KS Nagesh
4. D Koteeswaran
Publishing Year
Author Affiliations
1. Mar Baselios Dental College , Kothamangalam (Kerala), India, Govt Dental College and Hospital, Calicut
2. Yenepoya Dental College and Hospital, Mangalore
3. RV Dental College, Jayanagar, Bangalore
4. Kanjeevaram Cancer Institute, Kanjeevaram, Tamil Nadu
Chapter keywords


The maxillary sinus is the largest of the paranasal sinuses and the posterior maxillary teeth apices lies in close proximity to its floor. This means that the periapical infection can be carried to the maxillary sinus and in turn pathology of the sinus can penetrate through the roof of the oral cavity and appear as a diagnostic perplexity to the dental surgeon. Maxillary sinus or the Antrum of Highmore is a natural cavity in the body of the maxillary bone covered with a pseudostratified squamous epithelium. It communicates with nasal fossae through the half-moon shaped hiatus semilunaris. The mucociliary mechanism serves to remove the particulate matter and bacteria. The contiguity of the maxillary sinus makes it an important consideration in the puzzling pain syndromes of the upper facial area. The importance of the role of dental surgeon in the diagnosis of simple maxillary sinusitis to the complex and elusive antral carcinoma can hardly be overemphasized. A practicing dental surgeon must be in a position to advise and interpret both PNS views and OPG for these dental patients and utilize this knowledge for effective treatment planning. The function of the maxillary sinus appears to be to lighten the skull bones without compromising the strength. It imparts resonance to the voice, and regulates temperature of the inhaled air. The protective mechanism of the nasociliary mechanism appears, however to be purely speculative.

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