Frontal Sinus Dimensions and Maxillary and Mandibular Lengths in Individuals from Peru and Brazil: A Correlation Study

Objective: To determine the correlation of frontal sinus dimensions with maxillary and mandibular lengths in lateral head radiographs of Latin American individuals from Peru and Brazil. Material and Methods: This correlation study evaluated 200 lateral head radiographs from Peruvian (n=100) and Brazilian (n=100) individuals aged 15 to 20 years. Two investigators were trained and calibrated to perform all measurements. Digital measurement of frontal sinus height and width was performed using specialized software. Subsequently, the maxillary (condylion to A point) and mandibular (condylion to gnathion—point) effective lengths were measured. Pearson correlation tests were used to assess the strength of the association. A significant level of p<0.05 was used. Results: A significant correlation was found between frontal sinus height and effective maxillary and mandibular lengths (p= 0.013 and p= 0.014, respectively). Frontal sinus width was also significantly correlated with effective maxillary and mandibular length (p=0.001 and p<0.001, respectively). However, the correlations between frontal sinus height and width with maxillary and mandibular effective length were weak to moderate. Conclusion: The correlations between frontal sinus width and height and maxillary effective lengths are weak to moderate, indicating that, in most cases, as maxillary dimensions increase, frontal sinus lengths also increase but do not change by the same magnitude.