第一颗恒磨牙(FPM)是口腔中出现的第一颗恒牙,它们在牙列中起着重要的作用,牙科发展,和闭塞。由于早期萌出,FPM是最容易患龋齿的牙齿。FPMs的流失有许多不利的后果。许多以前的研究都集中在年轻的年龄组。据我们所知,有关沙特阿拉伯成年人FPM状况的文献中需要报道更多的最新数据.该研究旨在评估利雅得患者样本中成人永久性第一磨牙的状况。方法从牙科大学医院的患者记录中进行横断面回顾性研究,牙科学院,沙特国王大学(KSU),在获得道德批准后。在KSU看到的810名18岁及以上患者的全景图像,牙科学院,进行了检查以评估FPM的状态。在2017年至2022年之间,出于各种牙科原因进行了全景检查。患者分为三个年龄组:18-30岁,31-50岁和>50岁。以特定形式收集数据并进行分析。牙齿缺失的患病率,以及修复的龋齿,被记录下来。此外,记录了有关修复类型的更多信息。关于年龄的研究结果的相关性,性别,侧面,对所有病例进行下颌测定,并采用卡方检验。P值小于0.05被认为具有统计学意义。结果共对810例患者进行了全景X线照片研究。全景式男性研究对象为382名(47.2%),女性为427人(52.8%)。其中三百三十九人(339人;41.9%)年龄在30岁以下,327人(40.4%)在31-50岁年龄组,其余144人(17.8%)年龄在50岁以上。第1磨牙缺失的患病率为16齿145颗(17.9%),26齿147颗(18.1%),36齿207颗(25.5%),46齿188颗(23.2%)。在年龄组和性别与第一磨牙缺失牙齿之间没有发现统计学上的显着关联(p=0.848和p=0.159)。百分之十九(19.13%)的患者只有一名漏诊FPM,12.3%的患者有两个,其中6.29%的人有三颗FPM牙齿缺失。五分之五(5.55%)的患者有四个缺失的FPM。在整个样本中,共有56.8%(242)的X射线照片没有显示任何缺失的牙齿。下颌FPM(35.2%)的缺失频率高于上颌骨(14.8%),左下颌象限FPM缺失率略高(25.55%)。统计上,在不同年龄组中,失踪FPM的数量之间存在显着关联,p值<0.0001。最恢复的,carious,替换的牙齿是下颌左磨牙,牙齿颜色修复是最常用的修复方法。结论在本研究人群中发现第一恒磨牙(FPM)缺失的患病率较高。这需要更多的意识和预防措施来保护如此重要的牙齿,因此减少了对复杂程序的需求。
Introduction The first permanent molars (FPMs) are the first permanent teeth to emerge in the oral cavity, which have an important role in dentition, dental development, and occlusion. FPMs are the most susceptible teeth to caries due to early eruption. There are many adverse consequences related to losing FPMs. Many of the previous studies focused on younger age groups. To the best of our knowledge, there needs to be more newly updated data reported in the literature regarding the status of FPMs in adults in Saudi Arabia. The study aimed to assess the status of permanent first molars among adults in a sample of patients in Riyadh. Methods A cross-sectional retrospective study was conducted from the records of patients in the Dental University Hospital, College of Dentistry, King Saud University (KSU), after obtaining ethical approval. Panoramic images of 810 patients ages 18 and above who were seen at KSU, College of Dentistry, were examined to assess the status of FPMs. A panoramic examination was undertaken for various dental reasons in the time between the years 2017 and 2022. Patients were divided into three age groups: 18-30, 31-50, and >50 years. Data were collected in a particular form and analyzed. The prevalence of missing teeth, as well as restored and carious teeth, were recorded. In addition, further information regarding the type of restoration was recorded. Correlations of the findings regarding age, gender, side, and jaw were determined for all cases and were performed using the chi-square test. P-values less than 0.05 were considered statistically significant. Results A total of 810 patients\' panoramic radiographs were studied. Panoramic male study subjects were 382 (47.2%), and females were 427 (52.8%). Three-hundred thirty-nine (339; 41.9%) of them were of less than 30 years of age, 327 (40.4%) were in the age group of 31-50 years, and the remaining 144 (17.8%) were above 50 years of age. The prevalence of missing first molar teeth was 145 (17.9%) for teeth 16, 147 (18.1%) for teeth 26, 207 (25.5%) for teeth 36, and 188 (23.2%) for teeth 46. No statistically significant association was found between the age groups and gender and the first molar missing teeth (p=0.848 & p=0.159). Nineteen point thirteen percent (19.13%) of patients had only one missing
FPM, 12.3% of patients had two, and 6.29% of them had three missing
FPM teeth. Five point fifty-five percent (5.55%) of patients had four missing FPMs. A total of 56.8% (242) radiographs in the overall sample did not show any missing teeth. The mandibular FPMs (35.2%) were found missing more frequently than their maxillary counterparts (14.8%), and the left mandibular quadrant showed a slightly higher rate of missing
FPM (25.55%). Statistically, a significant association was seen between the number of missing
FPM among different age groups, p-value <0.0001. The most restored, carious, and replaced tooth was the mandibular left molar, and tooth-color restoration was the most commonly used restoration. Conclusion A high prevalence rate of missing first permanent molars (FPMs) was found in this study population. This calls for more awareness and preventive measures to preserve such significant teeth, therefore reducing the need for complex procedures. Further prospective studies on a larger population are needed to comprehensively evaluate the status of FPMs.