Pankratova N V, Persin L S, Al-Kaisi R
Stomatologiia (Mosk). 1991 Sep-Oct(5):70-2.
The height of permanent teeth crowns was measured and the status of supporting tissue studied with the use of a Periotest apparatus (Siemens, Germany) in 95 children aged 7-12 with physiologic dental occlusion and in 70 age-matched children without dental occlusion in the frontal section. The data obtained by this apparatus permit a judgement on exercise tolerance of periodontal tissue. The size of the vertical fissure between maxillary and mandibular anterior teeth was measured in the children with abnormal occlusion and analysis of correlations and regressions of this parameter with the height of permanent teeth crown was carried out. The findings evidence that dental supporting tissue strength changes with age, as the maxillodental system develops, and that this characteristic is rather low in the children with non-occluding frontal teeth.
在95名7至12岁生理性牙合的儿童以及70名年龄匹配的无牙合儿童的额状面中，测量了恒牙冠的高度，并使用牙周测试仪（德国西门子公司）研究了支持组织的状况。该仪器所获得的数据有助于判断牙周组织的运动耐受性。对上颌和下颌前牙之间垂直裂隙的大小在咬合异常的儿童中进行了测量，并对该参数与恒牙冠高度进行了相关性和回归分析。研究结果证明，随着颌牙系统的发育，牙齿支持组织的强度随年龄而变化，并且在前牙无咬合的儿童中这一特征相当低。
