Barngkgei Imad, Alhalabi Yaser, Roubah Sara
Department of Oral Medicine, College of Dentistry, National University of Science and Technology, Al-Nasiriyah, Dhi Qar, Iraq.
Department of Oral Medicine, Faculty of Dentistry, Al-Wataniya Private University, Gor Alasi, Hama, Syria.
BMC Oral Health. 2025 May 26;25(1):796. doi: 10.1186/s12903-025-06146-4.
To evaluate the relationship between caries experience measured by the decayed missing filled teeth (DMFT) index and the radiographic density of dental hard tissues measured by cone beam computed tomography (CBCT) with a novel calibration tool for individuals aged > 20 to 25 years.
The sample consisted of 40 patients. Their DMFT ranged from 1 to 16 (mean = 6.5, standard deviation = 3.4). CBCT was performed for all patients, and an extracted tooth covered with self-cured acrylic resin was used as a radiographic density calibration tool. The gray values of the enamel, coronal and radical dentine regions of all the teeth were measured by two examiners. The average values of enamel and dentine radiographic density of incisors, canines, premolars and molars in each jaw and both jaws were calculated, and correlated with DMFT.
The radiographic density of mandibular incisors and all incisors of both jaws had the highest Pearson correlation coefficients with DMFT (0.33 < r < 0.42, P-value = 0.016). Neither the coronal nor the radicular dentine radiographic density was correlated with the DMFT according to any examiner.
Enamel, not dentine, radiographic density calculated from incisors via CBCT scans was correlated with DMFT in individuals aged > 20 to 25 years. The strengths of these correlations were moderate.
The enamel radiographic density of incisors, measured by CBCT using a novel calibration tool, was correlated with dental caries status in young adults aged 20-25 years. Thus, this study provides deeper insight into the radiographic density of dental hard tissues as a determinant of dental caries. This factor is also measurable in a clinical setting.
使用一种新型校准工具，评估在年龄大于20至25岁的个体中，用龋失补牙指数（DMFT）测量的龋病经验与用锥形束计算机断层扫描（CBCT）测量的牙齿硬组织放射密度之间的关系。
样本包括40名患者。他们的DMFT范围为1至16（平均值 = 6.5，标准差 = 3.4）。对所有患者进行CBCT检查，并将一颗覆盖有自凝丙烯酸树脂的离体牙用作放射密度校准工具。由两名检查者测量所有牙齿的釉质、冠部和根部牙本质区域的灰度值。计算每侧颌骨及双侧颌骨中切牙、尖牙、前磨牙和磨牙的釉质和牙本质放射密度平均值，并与DMFT进行相关性分析。
下颌切牙及双侧颌骨所有切牙的放射密度与DMFT的Pearson相关系数最高（0.33 < r < 0.42，P值 = 0.016）。根据任何一位检查者的测量，冠部或根部牙本质放射密度均与DMFT无相关性。
在年龄大于20至25岁的个体中，通过CBCT扫描从切牙计算得出的釉质放射密度而非牙本质放射密度与DMFT相关。这些相关性强度为中等。
使用新型校准工具通过CBCT测量的切牙釉质放射密度与20 - 25岁年轻成年人的龋病状况相关。因此，本研究为作为龋病决定因素的牙齿硬组织放射密度提供了更深入的见解。该因素在临床环境中也可测量。
