Nascimento Helena Aguiar Ribeiro, Visconti Maria Augusta Portella Guedes, Macedo Paulo de Tarso Silva, Haiter-Neto Francisco, Freitas Deborah Queiroz
Oral Radiology Area, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Avenida Limeira, 901, Areião, Piracicaba, SP, 13414-400, Brazil.
Surg Radiol Anat. 2015 Jan;37(1):55-60. doi: 10.1007/s00276-014-1325-3. Epub 2014 Jun 21.
The zygomatic bone (ZB) has been an effective option in the rehabilitation of the atrophic edentulous maxilla, in restoration of the low projection of the maxilla and in insertion of miniplates in maxillofacial fracture; it is situated near to air cells. In this way, the aim of this study was to evaluate the ZB by means of cone beam computed tomography (CBCT) images to determine if this bone can present characteristics similar to pneumatizations (CSPZB) and, in affirmative case, to determine its distribution concerning the age, gender, laterality and type.
CBCT of 698 patients (1.396 ZB) were evaluated to determine the presence of CSPZB. The age and gender were recorded for all patients and, for the cases of CSPZB, laterality and type (unilocular or multilocular) were noted. Its prevalence was correlated with gender, age and laterality by statistical analyses (Chi-squared test).
3.3% of individuals presented CSPZB. If we consider all zygomatic bones, CSPZB was in 2.8%. Of these cases, 30.5% were unilateral and 69.5% bilateral; all presented multilocular pattern. There was no statistical correlation between CSPZB and gender or age (p = 0.15 and 0.63, respectively), neither between CSPZB and laterality (p = 0.39).
It was found an altered pattern similar to pneumatization in ZB; however, its prevalence was low (3.3% of the studied population). Our results indicate that the ZB should be evaluated in tomographic images prior to surgical treatments carefully.
颧骨（ZB）在萎缩性无牙上颌骨的修复、上颌骨低突度的恢复以及颌面骨折微型钢板的植入方面一直是一种有效的选择；它靠近气房。因此，本研究的目的是通过锥形束计算机断层扫描（CBCT）图像评估颧骨，以确定该骨是否能呈现与气化相似的特征（CSPZB），如果是肯定的情况，则确定其在年龄、性别、侧别和类型方面的分布。
对698例患者（1396块颧骨）的CBCT进行评估，以确定CSPZB的存在。记录所有患者的年龄和性别，对于CSPZB病例，记录侧别和类型（单房或多房）。通过统计分析（卡方检验）将其患病率与性别、年龄和侧别相关联。
3.3%的个体存在CSPZB。如果考虑所有颧骨，CSPZB的比例为2.8%。在这些病例中，30.5%为单侧，69.5%为双侧；均呈现多房模式。CSPZB与性别或年龄之间无统计学相关性（分别为p = 0.15和0.63），CSPZB与侧别之间也无统计学相关性（p = 0.39）。
发现颧骨存在与气化相似的改变模式；然而，其患病率较低（占研究人群的3.3%）。我们的结果表明，在手术治疗前应仔细评估断层图像中的颧骨。
