Conclusion (1) Insufficient basal bone width and excessive tooth size were the main causes of toothcrowding and tooth removing treatment.
结论：1 .基骨宽度不足、牙齿过大是造成牙列拥挤和拔牙矫治的主要原因。
2
Product Vendors: "There is still an enormous and growing population of SOA product vendors crowding the market and fighting tooth and nail for your business.
产品提供商：“仍然有很多且数量还在不断增长中的SOA产品提供商蜂拥在这个市场上为你的业务拼命。
3
This article is to investigate the clinical effect of mild dental crowding cases applying bracketless invisible appliance by manual tooth arrangement.