Richards A, Likimani S, Baelum V, Fejerskov O
Department of Oral Anatomy, Dental Pathology and Operative Dentistry, Royal Dental College, Aarhus, Denmark.
Caries Res. 1992;26(5):328-32. doi: 10.1159/000261463.
Unerupted fluorotic human enamel was obtained from teeth surgically removed from patients with dental fluorosis. Fluoride was measured in samples produced by serial acid etching from the surface to the interior of blocks of buccal and lingual enamel. The severity of fluorosis, according to the TF index, was determined from the macroscopic and microradiographic appearance of the specimens. The shape of the fluoride profiles was not affected by the degree of severity of fluorosis, but the fluoride concentrations increased with increasing severity of lesions. Fluoride concentrations were similar to those previously recorded in erupted fluorotic enamel and were not related to the length of time the teeth had been present in the jaws. It was concluded that the fluoride content of erupted fluorotic enamel represents fluoride acquired during tooth formation and that further uptake prior to eruption may be negligible.
未萌出的氟斑牙釉质取自因氟斑牙而接受手术拔除牙齿的患者。对从颊侧和舌侧牙釉质块表面至内部进行连续酸蚀所制备的样本进行氟含量测定。根据TF指数，从标本的宏观和显微放射影像外观确定氟斑牙的严重程度。氟化物分布曲线的形状不受氟斑牙严重程度的影响，但随着病变严重程度的增加，氟化物浓度升高。氟化物浓度与先前在已萌出的氟斑牙釉质中记录的浓度相似，且与牙齿在颌骨中存在的时间长短无关。得出的结论是，已萌出的氟斑牙釉质中的氟含量代表牙齿形成过程中获取的氟，且萌出前的进一步摄取可能可忽略不计。
