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Dental alumina workpiece
Provided is a dental alumina workpiece which, after sintering, exhibits excellent light transmittance, strength, and linear light transmittance in a sintered body. The present invention pertains to a dental alumina workpiece in which, on a straight line extending in a first direction from one end (P) to the other end (Q) of the dental alumina workpiece, D1 represents the average crystal grain size after sintering at a first point in a section from the one end (P) to 25% of the entire length; and when D2 is the average crystal grain size after sintering at a second point in a section from the other end Q to 25% of the entire length, D1 and D2 differ.
本发明提供烧结后的烧结体的透光性、强度和直线光透射率优异的牙科用氧化铝被加工体。本发明涉及牙科用氧化铝被加工体，其中，在从前述牙科用氧化铝被加工体的一端P朝向另一端Q的第一方向上延伸的直线上，将处于从前述一端P起至全长的25％为止的区间内的第一点处的烧结后的平均结晶粒径设为D1，将处于从前述另一端Q起至全长的25％为止的区间内的第二点处的烧结后的平均结晶粒径设为D2时，前述D1与前述D2不同。
Dental alumina workpiece
Provided is a dental alumina workpiece which, after sintering, exhibits excellent light transmittance, strength, and linear light transmittance in a sintered body. The present invention pertains to a dental alumina workpiece in which, on a straight line extending in a first direction from one end (P) to the other end (Q) of the dental alumina workpiece, D1 represents the average crystal grain size after sintering at a first point in a section from the one end (P) to 25% of the entire length; and when D2 is the average crystal grain size after sintering at a second point in a section from the other end Q to 25% of the entire length, D1 and D2 differ.
本发明提供烧结后的烧结体的透光性、强度和直线光透射率优异的牙科用氧化铝被加工体。本发明涉及牙科用氧化铝被加工体，其中，在从前述牙科用氧化铝被加工体的一端P朝向另一端Q的第一方向上延伸的直线上，将处于从前述一端P起至全长的25％为止的区间内的第一点处的烧结后的平均结晶粒径设为D1，将处于从前述另一端Q起至全长的25％为止的区间内的第二点处的烧结后的平均结晶粒径设为D2时，前述D1与前述D2不同。
Dental alumina workpiece
牙科用氧化铝被加工体
KATO SHINICHIRO (author) / SAKAMOTO HIROYUKI (author) / NAKANO KIRIHIRO (author) / KASHIKI NOBUSUKE (author) / ISHINO HIROSHIGE (author)
2024-08-16
Patent
Electronic Resource
Chinese
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