Oikarinen K
Department of Oral Surgery, Institute of Dentistry, University of Oulu, Finland.
Int J Oral Maxillofac Surg. 1988 Apr;17(2):125-7. doi: 10.1016/s0901-5027(88)80166-8.
An experimental model was constructed to test the flexibility of the arch bar splint and the Schuchardt splint as compared with a newly introduced wire-composite splint. Vertical movement in 4 flexible incisors was tested by producing compressive forces between 15-95 Newtons on the incisal edges. The thinnest wire-composite splint was also tested for lateral flexibility by producing palatal forces from 2 angles. Movement without the splint served as the control. The tests showed that a 0.3 mm thick wire-composite splint had the flexibility closest to the control, followed by the arch bar splint, and 0.4 mm and 0.5 mm wire-composite splints, while the Schuchardt splint virtually prevented vertical movement. Lateral movement was markedly reduced by the 0.3 mm wire-composite splint as compared with the control with both a 10 degree and a 45 degree force. The experiments showed that a 0.3 mm wire-composite splint can be regarded as acting as a functional fixation allowing slight vertical movement of the teeth during immobilisation; it should be recommended for tooth fixation whenever possible.
构建了一个实验模型，以测试弓形夹板和舒查特夹板与新推出的钢丝复合夹板相比的灵活性。通过在切缘产生15至95牛顿的压力来测试4颗灵活切牙的垂直运动。还通过从两个角度产生腭向力来测试最薄的钢丝复合夹板的侧向灵活性。不使用夹板的运动作为对照。测试表明，0.3毫米厚的钢丝复合夹板的灵活性最接近对照，其次是弓形夹板，以及0.4毫米和0.5毫米的钢丝复合夹板，而舒查特夹板实际上阻止了垂直运动。与10度和45度力的对照相比，0.3毫米钢丝复合夹板显著减少了侧向运动。实验表明，0.3毫米钢丝复合夹板可被视为起到功能性固定作用，在固定期间允许牙齿有轻微的垂直运动；应尽可能推荐用于牙齿固定。
