Zamaninaser Asieh, Rashidipoor Roghayeh, Mosavat Farzaneh, Ahmadi Ahura
Torabinejad Dental Research Center and Department of Oral and Maxillofacial Radiology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Dent Res J (Isfahan). 2012 Dec;9(Suppl 1):S63-8.
The mastoid pneumatization begins on the 33(rd) week of embryonic life, and continuous up to 8-9 years of age. This air cells is important for surgical perspective. Inadvertent penetration through this anatomical feature during surgical procedures can be disastrous. Aim of this study is to determine the prevalence of zygomatic air cell defect (ZACD) in the Esfehanian population.
This was a cross-sectional study. 2600 panoramic radiographs of patients aged between 3 and 90 years were evaluated retrospectively to establish dominant laterality, type and grade amongst these patients. The SPSS 11.5 program was used for the statistical analysis. Mean and standard deviation were used for statistical methods in this study.
ZACD was found in 94 cases, representing a prevalence of 3.6%. 59 cases occurred in females (62.8%) and 35 cases occurred in males (37.2%). Most cases were in their twenties. Unilateral ZACD was found in 70 patients (74.5%) with the half occurring on the right side. In 24 cases (25.5%) was bilateral. 70 of the cases (59.3%) were multilocular type, while 45 (38.1) and 3 (2.6%) were unilocular and trabecular type, respectively. 59 cases were grade 2 (62.8%) and 35 were grade 3 (37.2%).
The frequency of ZACD amongst Iranian population was more than previous studies. In addition younger population was involved in this group. So it is important for clinicians who are planning to perform temporomandibular joint surgery to assess radiographic imaging thoroughly before the surgery to avoid intraoperative complications.
乳突气化始于胚胎期第33周，并持续至8 - 9岁。这些气房从手术角度来看很重要。手术过程中不经意穿透这一解剖结构可能会带来灾难性后果。本研究的目的是确定伊斯法罕人群中颧气房缺损（ZACD）的患病率。
这是一项横断面研究。回顾性评估了2600例年龄在3至90岁患者的全景X线片，以确定这些患者中优势侧、类型和分级情况。使用SPSS 11.5程序进行统计分析。本研究采用均值和标准差进行统计方法。
发现94例ZACD，患病率为3.6%。59例发生在女性（62.8%），35例发生在男性（37.2%）。大多数病例在二十多岁。70例患者（74.5%）为单侧ZACD，其中一半发生在右侧。24例（25.5%）为双侧。70例（59.3%）为多房型，而45例（38.1%）和3例（2.6%）分别为单房型和小梁型。59例为2级（62.8%），35例为3级（37.2%）。
伊朗人群中ZACD的发生率高于以往研究。此外，该组涉及更年轻的人群。因此，对于计划进行颞下颌关节手术的临床医生来说，在手术前彻底评估影像学检查以避免术中并发症很重要。
