Résumé
Abstract Introduction Anatomical variations in the sinonasal region are remarkably common and these variations may have an impact on maxillary sinus development due to their close anatomical adjacency. Objective The aim of this study was to investigate the effect of anatomical variations of the sinonasal region on the width, height, length, and volume of the maxillary sinus. Methods Cone beam computed tomography records of 120 patients were evaluated. Nasal septum deviation angle was measured for each patient and patients were divided into three groups as mild, moderate, and severe. Sinonasal variations such as nasal septum deviation direction, septal spur, concha bullosa, uncinate process pneumatization, middle concha hypertrophy, inferior concha hypertrophy, paradoxical middle concha and presence of septa in the maxillary sinus were registered. Cone beam computed tomography images were transferred to the SimPlant software thus right and left maxillary sinus volumes and dimensions were measured separately. Results There was a negative and statistically significant relationship between age and left maxillary sinus width (p= 0.015). The relationships between gender and maxillary sinus volumes and dimensions were statistically significant (p< 0.05). Although there were significant relationships between the nasal septum deviation severity, middle concha hypertrophy, inferior concha hypertrophy, paradoxical middle concha, and presence of septa and maxillary sinus dimensions; there was no significant relationship between septal spur, nasal septum deviation direction, concha bullosa, uncinate process pneumatization, and maxillary sinus dimensions. No statistically significant relationship could be determined between maxillary sinus volume and anatomical variations of the sinonasal region. Conclusion According to our findings, while certain the variations were found to affect the sinus dimensions; none of the variations was found to be related to the maxillary sinus volume.
Resumo Introdução As variações anatômicas na região nasossinusal são extremamente comuns e essas variações podem ter um impacto no desenvolvimento do seio maxilar, devido à proximidade anatômica. Objetivo Investigar o efeito das variações anatômicas da região nasossinusal na largura, altura, comprimento e volume do seio maxilar. Método Foram avaliados registros de tomografia computadorizada de feixe cônico de 120 pacientes. O ângulo de desvio do septo nasal foi medido para cada paciente e os pacientes foram divididos em três grupos: leve, moderado e grave. Foram observadas variações nasossinusais, como direção do desvio do septo nasal, esporão septal, concha bolhosa, pneumatização do processo uncinado, hipertrofia da concha média, hipertrofia da concha inferior, concha média paradoxal e presença de septos no seio maxilar. Imagens de tomografia computadorizada de feixe cônico foram transferidas para o software SimPlant e, portanto, os volumes e dimensões dos seios maxilares direito e esquerdo foram medidos separadamente. Resultados Houve uma relação negativa e estatisticamente significante entre a idade e a largura do seio maxilar esquerdo (p = 0,015). As relações entre gênero e volumes e dimensões do seio maxilar foram estatisticamente significantes (p < 0,05). Embora houvesse relações significativas entre a gravidade do desvio do septo nasal, hipertrofia da concha média, hipertrofia da concha inferior, concha média paradoxal e presença de septos e dimensões do seio maxilar, não houve relação significativa entre esporão septal, direção do desvio do septo nasal, concha bolhosa, pneumatização do processo uncinado e dimensões do seio maxilar. Nenhuma relação estatisticamente significante pôde ser determinada entre o volume do seio maxilar e as variações anatômicas da região nasossinusal. Conclusão De acordo com nossos achados, embora certas variações tenham afetado as dimensões sinusais, nenhuma das variações foi efetivamente relacionada ao volume do seio maxilar.
Résumé
Objective To calculate the volume of maxillary sinus and sphenoid sinus of adults in China by CT, and to analyze the differences of gender in the adult maxillary sinus and sphenoid sinus. Methods Ninety-three CT images of sinus were randomly selected from Peking University Third Hospital. The digital model of maxillary sinus and sphenoid sinus was reconstructed by Mimicsl7. 0 3D reconstruction software. And the sinus volume was obtained by the three-dimensional digital model. Results The average volume of the right maxillary sinus in the male was ( 16. 69±6. 90) ml, and the average volume of the maxillary sinus in the left side of the male was ( 16. 88±7. 12) ml. The average volume of the right sphenoid sinus of male was (4. 62±2. 99) ml, and the average volume of the left sphenoid sinus of male was (5. 58± 3. 72) ml. The average volume of the right maxillary sinus in female was (11. 39±5. 63) ml, and the average volume of the left maxillary sinus in female was (11. 37±5. 38) ml. The average volume of the right sphenoid sinus of female was (4. 12 ±2. 53) ml, and the average volume of the left sphenoid sinus of female was (3. 32±2. 30) ml. The left sphenoid sinus and bilateral maxillary sinus volume had gender differences. Conclusion Three-dimensional reconstruction can quickly obtain a three-dimensional model of the sinus, accurately calculate the sinus volume, and indirectly reflect gender through the sinus volume. It provides a certain reference for further understanding of sinus anatomy.
Résumé
PURPOSE: To propose a standard value for the maxillary sinus volume of a normal Korean adult by measuring the width and height of the sinus and analyzing their correlation and the difference of the sinus size respectively between sexes, and on the right and left sides. MATERIALS AND METHODS: Fifty-two(95 maxillary sinuses) out of 20 years or over aged patients who had taken CT in the Department of Dental Radiology, Yonsei University, Dental Hospital, between February 1997 and July 1999 who were no specific symptom, prominent bony septa, pathosis, clinical asymmetry and history of surgery in the maxillary sinus were retrospectively analyzed. RESULTS: The mean transverse width, antero-posterior width, height and volume of the normal Korean adult's maxillary sinuses were 28.33 mm, 39.69 mm, 46.60 mm and 21.90 cm3, respectively. There was a significant sex difference in the sinus volume(p<0.05). In the mean antero-posterior width, height and volume of the sinus, no significant difference was observed between both sides. All four measurements showed a significant correlation between both sides(p<0.0001). The widths and height of the sinus all showed a significant correlation with the sinus volume(p<0.0001). CONCLUSION: In the Korean normal adult's maxillary sinus, males tended to be larger than females. Except for the transverse width, all of the measurements showed no significant difference between the right and left side, but significant correlations in the four measurements between both sides were observed. Thus, the overgrowth or undergrowth in the unilateral maxillary sinus may suggest a certain pathosis or developmental abnormalities in the maxillary sinus.