■有关健康牙齿组织的Hounsfield值范围的信息可能成为评估牙齿健康的附加工具,可以使用,在其他数据中,用于后续机器学习。
■我们研究的目的是确定以Hounsfield单位(HU)为单位的牙齿组织密度。
■总样本包括研究时年龄在10-11岁的36名健康儿童(n=21,58%的女孩和n=15,42%的男孩)。分析了320颗牙齿组织的密度。数据表示为均值和SDs。使用Student(1尾)t检验确定显著性。统计学意义设置为P<0.05。
■分析了320颗牙齿组织的密度:72颗(22.5%)第一恒磨牙,72个(22.5%)永久性中央切牙,27颗(8.4%)第二乳磨牙,40(12.5%)第二前磨牙的牙胚,37(11.6%)第二前磨牙,9(2.8%)第二恒磨牙,第二恒磨牙的牙胚为63个(19.7%)。对数据的分析表明,儿童健康牙齿的组织具有不同的密度范围:牙釉质,从平均2954.69(SD223.77)HU到平均2071.00(SD222.86)HU;牙本质,从平均1899.23(SD145.94)HU到平均1323.10(SD201.67)HU;和纸浆,从平均420.29(SD196.47)HU到平均183.63(SD97.59)HU。下颌骨和上颌骨中永久性中央切牙的组织(牙釉质和牙本质)的平均密度最高。没有可靠地确定有关牙齿组织密度的性别差异。
■对牙齿组织的Hounsfield值的评估可用作评估其密度的客观方法。如果确定釉质的密度,牙本质,和牙髓不符合健康牙齿组织的值范围,那么它可能表明病理。
UNASSIGNED: Information about the range of Hounsfield values for healthy teeth tissues could become an additional tool in assessing dental health and could be used, among other data, for subsequent machine learning.
UNASSIGNED: The purpose of our study was to determine dental tissue densities in Hounsfield units (HU).
UNASSIGNED: The total sample included 36 healthy children (n=21, 58% girls and n=15, 42% boys) aged 10-11 years at the time of the study. The densities of 320 teeth tissues were analyzed. Data were expressed as means and SDs. The significance was determined using the Student (1-tailed) t test. The statistical significance was set at P<.05.
UNASSIGNED: The densities of 320 teeth tissues were analyzed: 72 (22.5%) first permanent molars, 72 (22.5%) permanent central incisors, 27 (8.4%) second primary molars, 40 (12.5%)
tooth germs of second premolars, 37 (11.6%) second premolars, 9 (2.8%) second permanent molars, and 63 (19.7%)
tooth germs of second permanent molars. The analysis of the data showed that tissues of healthy teeth in children have different density ranges: enamel, from mean 2954.69 (SD 223.77) HU to mean 2071.00 (SD 222.86) HU; dentin, from mean 1899.23 (SD 145.94) HU to mean 1323.10 (SD 201.67) HU; and pulp, from mean 420.29 (SD 196.47) HU to mean 183.63 (SD 97.59) HU. The tissues (enamel and dentin) of permanent central incisors in the mandible and maxilla had the highest mean densities. No gender differences concerning the density of dental tissues were reliably identified.
UNASSIGNED: The evaluation of Hounsfield values for dental tissues can be used as an objective method for assessing their densities. If the determined densities of the enamel, dentin, and pulp of the
tooth do not correspond to the range of values for healthy
tooth tissues, then it may indicate a pathology.