求翻译：牙龈萎缩：医学上称为生理性牙萎缩。其形成的原因，有人认为是牙龈发炎后，牙龈坏死脱落造成的。临床上常见的是横刷牙损伤了牙龈组织，引起牙龈萎缩。另外，牙龈萎缩与牙槽骨吸收程度有关。关于牙槽骨吸收的原因，多认为是由于牙周组织缺乏正常的功能刺激，这与老年人的咀嚼力下降有关。如果老年人有一侧牙齿长期不能使用或两侧牙都缺失，在进食时，牙槽骨受或者说力刺激减轻，牙槽骨便容易稀疏。牙龈附着的高度与牙槽骨的是什么意思？

Gingival recession: physiological tooth medically known as atrophy. The reasons for its formation, gingival inflammation, gingival necrosis caused. Common clinical cross brushing your teeth damage the gum tissue, causing gum recession. In addition, gingival recession with the degree of alveolar bone

gum recession: medically known as physiological Bluetooth shrink. The reason for its creation, it was considered to be gum irritation, gum tissue necrosis caused by falling off. It is common clinical practice, brushing across the gingival tissue damage, causing gum shrinkage. In addition to gum rece

Gum atrophy: In the medicine is called the physiology odontatrophia.It forms the reason, after some people thought is the gum inflammation, gum necrosis falls off creates.On clinical common was cleans the teeth horizontally has damaged the gum organization, caused the gum atrophy.Moreover, the gum a

Gingival atrophy: medically referred to as physiologic atrophy. Causes of its formation, after some people believe that the inflammation of the gums, gums and necrosis caused by shedding. Clinical cross teeth injury is common on the gingival tissue, gingival atrophy caused by. In addition, gingival

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