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上、下颌骨骨折的处理离不开牙弓夹板的固定,目前虽有一些预成的牙弓夹板,但价格较贵,固定不便。作者设计了一种新的牙弓夹板,其制作简单、价格低廉。材料与方法根据患者年龄选用直径1～1.5mm不锈钢丝制成扁平状作为牙弓夹板,将其弯成与局部牙弓一致的半圆弧形. 如图1所示,在牙弓夹板两端向外再弯曲成一个能通过结扎丝的小钩圈,两端小钩圈恰位于最后磨牙的颊侧近中缘,不宜后伸过长。通过小钩圈牵引从颊侧到腭(舌)侧环绕最后牙齿的不锈钢结扎丝直径0.35～0.46mm,长约15cm,两根结扎丝分别在牙弓夹板上、下从倒数第一、第二牙间隙向颊侧穿出,并先后将夹板两端拧紧固定,最后再在骨折线两端牙弓夹板上附加结扎丝将牙列结扎固定(图2)。
On the mandibular fracture treatment can not be separated from the dental arch fixation, although there are some preformed dental arch splint, but the price is more expensive, fixed inconvenience. The author designed a new dental arch splint, which is simple to make and low in price. Materials and methods According to the age of patients choose 1 ~ 1.5mm in diameter stainless steel wire made of flat arch as the arch, bend it with the partial arch of the semicircular arc.As shown in Figure 1, at both ends of the arch Bending outside and then into a small hooks through the ligation of silk, both ends of the small hook just in the buccal side of the final molar teeth near the middle, should not be stretched too long. The diameter of the stainless steel ligature wire that is pulled from the buccal side to the palatal (lingual) side by the small hook ring is 0.35-0.46mm and about 15cm in length. The two ligature wires are respectively arranged on the arch of the dental arch from the penultimate and the second Teeth gap to the buccal side of the piercing, and will have two ends of the splint tighten, and finally at both ends of the fracture line on both sides of the arch splint additional ligation of the dentition ligation (Figure 2).