Hydroxyapatite seems to be the most suitable ceramic material for hard tissue replacement implants from the point of view of biocompatibility.

从生物相容性的角度考虑，羟基磷灰石(HA)是人体硬组织置换种植体最适合的陶瓷材料。

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Human hard tissue repair and reconstruction has been hard to solve for modern medicine.

人体硬组织的损伤修复与重建一直是现代医学力求解决的难题。

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The smear layer is produced simultaneously when the tooth hard tissue is cut mechanically.

玷污层是牙体切割过程中的必然产物。

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They evolve to become very dense, hard, pustular lesions, which are filled with what turns out to be tissue debris.

它们逐渐变成粘稠,发硬,产生脓包状的伤痕,而这些粘稠的脓事实上是组织残骸

耶鲁公开课 - 生物医学工程探索课程节选

Stress fractures, tendonitis or plantar fasciitis, a hard-to-heal tissue inflammation that feels like needles driven into your foot, are likely to result for runners who dash out the gate barefoot without gradually working up to it.

CNN: Running debate: Bare or in shoes?

The aim of the trial was to see if it made the women's breasts easier to examine in mammograms because young women's breast tissue is dense, making it hard for X-rays to pick up tumours.

BBC: Hormone spray 'could stop cancer'

Biolase's Waterlase system uses a patented combination of water and lasers to precisely cut hard tissues (bone and teeth) and soft tissue (gums) with minimal damage to surrounding areas.

FORBES: Biolase Smiles Again