Frequency of Maxillary Sinus Mucous Retention Cysts in a Central Brazilian Population.
BACKGROUND
Mucous retention cysts (MRCs) of the maxillary sinus are lesions with undefined pathogenesis. In recent researches, geographical and climatic aspects have been related as risk factors.


OBJECTIVE
The purpose of this study was to determine the frequency of MRCs of the maxillary sinus using panoramic radiographs.


METHODS
A total of 631 panoramic radiographs were selected from a secondary database from a private radiology clinic and analyzed by two specialists in dental radiology according to gender, age, month, relative air humidity, and mean temperature.


RESULTS
A total of 87 (6.89%) radiographic images were suggestive of MRCs. Thirty-five MRCs (40.22%) were detected on the right side, 10 (11.49%) on the left side and 42 (48.29%) on both sides. A high frequency was detected in female participants (n=45; 51, 72%), those aged 18-35 years (n=31; 35, 63%) and those from August (n=24; 27.59%) and July (n=22; 25.29%).


CONCLUSIONS
The frequency of MRCs was low, and no statistically significant correlation was found between the prevalence of MRCs and the studied variables with the exception of the mean temperature.
Dept. of Oral Diagnosis, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Evanice Menezes
EM
Marçal Vieira
Dept. of Oral Diagnosis, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Sylvania
S
de Morais
Dept. of Oral Diagnosis, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Carlo Ralph
CR
de Musis
Dept. of Endodontics, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Álvaro Henrique
ÁH
Borges
Dept. of Oral Surgery, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Vinícius Canavarros
VC
Palma
Dept. of Oral Diagnosis, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Laiane
L
da Silva Basilio
Dept. of Endodontics, School of Dentistry, University of Cuiabá, Cuiabá, Mato Grosso, Brazil.
Orlando Aguirre
OA
Guedes
Climate; Digital panoramic radiographs; Maxillary sinus; Mucous retention cysts