Complete cross-bite is one of the most common malocclusion.It always causes food impaction, caries and periodontitis.It also interferes with the fabrication of prosthesis.

• 摘要单颗牙完全错咬是一种常见之局部异常咬合，常导致病患咀嚼功能不良，食物常塞在牙缝，进而造成蛀牙及牙周病等问题，并影响假牙之制作；