骨质象牙化：骨头退化成坚硬的象牙质。
Eburnation: degeneration of bone into a hard ivorylike mass.
牙齿的外层有珐琅质及象牙质来保护牙髓。
Outer layer of the tooth enamel and ivory to protect the pulp quality.
他用的是一道激光而不是烦人的涡轮钻来清除象牙质和牙齿的珐琅质。
Instead of a whiny turbine drill he USES a flash of laser light to blast away dentin and enamel.
象牙质敏感是当牙齿接触或冷或热的食物所引起的急剧的，短暂的疼痛。
Dentine hypersensitivity is a sharp, sudden pain arising from the teeth when exposed to touch or hot and cold foods.
周后，冒出了两公厘宽的臼齿牙冠，具有牙髓腔、牙根的根尖、一层如骨骼般的象牙质，以及最基本的珐琅质。
Thirty weeks later two-millimeter-wide molar crowns emerged complete with pulp chambers root tips and bonelike layers of dentin and in a first enamel.
象牙质样瘤骨与骨针在MRI上呈略低至极低信号，而棉絮状瘤骨信号表现复杂，可呈低信号、高信号或高低混杂信号。
Relatively low signals were found in the MRI of ivory-like tumor bone and needle-like tumor bone, but the MRI signals of cotton-like tumor bone were very complex, which could be low, high or mixed.
象牙质敏感可以定义为因曝露的象牙质所引发的疼痛，通常是对外来刺激的反应，而且是无法用其他任何牙齿疾病来解释的。
Dentine hypersensitivity may be defined as the pain arising from exposed dentine, typically in response to external stimuli, and which cannot be explained by any other form of dental disease.
象牙质敏感可以定义为因曝露的象牙质所引发的疼痛，通常是对外来刺激的反应，而且是无法用其他任何牙齿疾病来解释的。
Dentine hypersensitivity may be defined as the pain arising from exposed dentine, typically in response to external stimuli, and which cannot be explained by any other form of dental disease.
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