Delgado H, Habicht J P, Yarbrough C, Lechtig A, Martorell R, Malina R M, Klein R E
Am J Clin Nutr. 1975 Mar;28(3):216-24. doi: 10.1093/ajcn/28.3.216.
The number of deciduous teeth in a sample of rural Ladino Guatemalan children was counted every 3 months through 24 months of age, and at 6-month intervals from 24 to 36 months. Nutritional status at birth, whether expressed as full-term birth weight or as maternal caloric supplementation during pregnancy, influences the timing of deciduous tooth eruption. Furthermore, the timing of deciduous tooth eruption seems more closely associated with postnatal weight than with birth weight. Although indices of nutritional deficiencies are associated with retarded tooth eruption, the use of mean number of deciduous teeth erupted as an estimate of mean chronological age in populations living under conditions of mild-to-moderate malnutrition is relatively accurate because errors of age estimation based on mean values for the present sample only vary between 1 and 2 months.
对危地马拉农村拉迪诺儿童样本，从出生到24个月龄每3个月统计一次乳牙数量，从24个月到36个月龄每6个月统计一次。出生时的营养状况，无论是用足月出生体重还是孕期母亲热量补充来表示，都会影响乳牙萌出的时间。此外，乳牙萌出时间似乎与出生后体重的关联比与出生体重的关联更为密切。虽然营养缺乏指标与牙齿萌出延迟有关，但在轻度至中度营养不良条件下生活的人群中，用已萌出乳牙的平均数量来估计平均实足年龄相对准确，因为基于本样本平均值的年龄估计误差仅在1至2个月之间。
