由于单纯机械磨擦作用而造成的牙齿硬组织慢性磨耗称为磨损。均匀适宜的磨损对牙周组织的健康有重要意义。例如：由于牙尖被磨损，减少了咀嚼时来自侧方的压力，使牙尖的形态和牙周组织的功能相互适应。此外牙冠的磨损可以减少临床牙冠的长度，保持冠根长度的协调，从而不至于由于杠杆作...
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