DEVELOPMENT OF THE DENTITION IN CLEIDOCRANIAL DYSPLASIA
DEVELOPMENT OF THE DENTITION IN CLEIDOCRANIAL DYSPLASIA
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DOI：
10.1111/j.1600-0714.1990.tb00803.x
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发表时间：
1990-02-01
影响因子：
3.3
通讯作者：
KREIBORG, S
中科院分区：
文献类型：
--
作者：
JENSEN, BL;KREIBORG, S
本研究的目的是描述的形成，成熟和萌出的齿列，包括多生牙的样本患者锁骨颅发育不良。对19名患者（9名男性，10名女性）的牙列进行了评估，包括正位X线片、口内X线片、头影测量片、手术切除的牙齿和口内照片，年龄为3.5至34岁。乳牙的形成是正常的，而所有的患者，但一个多生恒牙。多生牙的发生率从上颌切牙区的22%到磨牙区的5%不等。多生牙形成于正常牙的舌侧和牙合侧。乳牙列发育正常，恒牙发育延迟1 ~ 4年。多生牙比正常恒牙推迟约4年。乳牙萌出正常，而所有患者都有严重的恒牙萌出问题。据推测，乳牙和恒牙的牙板是正常的，但没有完全解决，因此可能形成多生牙。牙齿形态异常与间隙不足、萌出受阻有关。延迟或停止萌出可能是由于骨和乳牙的吸收减少以及多颗多生牙的存在。
The purpose of the present investigation was to describe the formation, maturation and eruption of the dentition, including supernumerary teeth in a sample of patients with cleidocranial dysplasia. The dentition was evaluated from orthopatomograms, intraoral radiographs, cephalometric films, surgically removed teeth and intraoral photographs in 19 patients (9 men, 10 women), aged 3.5 to 34 years. Formation of primary teeth was normal, whereas all patients but one had supernumerary permanent teeth. Frequency of supernumerary teeth ranged from 22% in the maxillary incisor region to 5% in the molar regions. Supernumerary teeth were formed lingually and occlusally to the normal teeth. Maturation of the primary dentition was normal, while permanent teeth were delayed from 1 to 4 yr. Supernumerary teeth were delayed about 4 years in relation to normal permanent teeth. Eruption of primary teeth was normal, whereas all patients had severe eruption problems of permanent teeth. It was hypothesized that the dental lamina for both primary and permanent dentition is normal, but does not resolve completely and therefore may form supernumerary teeth. Abnormalities of tooth morphology is related to inadequate space and arrested eruption. Delayed or arrested eruption is probably caused by diminished resorption of bone and of primary teeth and to the presence of multiple supernumerary teeth.