Larsson E
Swed Dent J. 1983;7(5):185-90.
From a mostly medieval skull material--the "Schreiner collections" in Oslo--juvenile crania were selected as follows: Group A: Crania with complete and intact primary dentition. n = 20. Group B: Crania with early mixed dentition. Incisors only erupted or under eruption. n = 47. Group C: Crania with late mixed dentition. n = 14. The author recorded visually: Sagittal and transversal dental relation, frontal dental contact, anterior cross-bite, rotation and crowding. There was good basal stability. Sagittally 1 moderately postnormal dentition was recorded, transversally there were no anomalies. Slight anterior cross-bite was recorded in 1 case, anterior cross-bite of one and two lateral incisors respectively in 2 others, and tête-à-tête contact in 3 cases. Crowding was recorded in 6 cases, in one of them being general, in the others located solely in the mandibular incisor segment. Broken contact and more or less pronounced rotation occurred in these dentitions. Rotation was also recorded in 2 other cases. The prevalence of malocclusions of the type that can be related to continuing finger-sucking or sucking of dummylike objects was very low in this material. This observation prompted the author to discuss a hypothesis concerning the aetiology of dummy- and finger-sucking habits.
从大多属于中世纪的头骨材料——奥斯陆的“施赖纳藏品”中，按如下方式选取了青少年颅骨：A组：乳牙列完整无损的颅骨，n = 20。B组：处于早期混合牙列的颅骨，仅切牙萌出或正在萌出，n = 47。C组：处于晚期混合牙列的颅骨，n = 14。作者通过肉眼记录了矢状向和横向的牙关系、额部牙接触、前牙反合、旋转和拥挤情况。基骨稳定性良好。矢状向上记录到1例中度后正常牙列，横向上未见异常。记录到1例轻度前牙反合，另2例分别为一侧和两侧侧切牙的前牙反合，3例存在对刃接触。6例记录到拥挤情况，其中1例为全牙列拥挤，其他仅见于下颌切牙段。这些牙列中出现了接触中断和或多或少明显的旋转。另外2例也记录到旋转情况。在该材料中，与持续吮指或吮吸类似安抚奶嘴物体相关的错颌畸形患病率很低。这一观察结果促使作者讨论了一个关于安抚奶嘴和吮指习惯病因的假说。
