Dental product with enhanced toughness

2:

• The dental product according to claim 1, wherein the porcelain layer has a thickness of 10 to 500 μm.

3:

• The dental product according to claim 1, wherein the base material formed of a zirconia sintered body comprises a stabilizer.

4:

• The dental product according to claim 3, wherein the stabilizer is at least one selected from the group consisting of yttrium oxide, titanium oxide, calcium oxide, magnesium oxide, cerium oxide, aluminum oxide, scandium oxide, lanthanum oxide, erbium oxide, praseodymium oxide, samarium oxide, europium oxide, and thulium oxide.

5:

• The dental product according to claim 1, wherein the suitable firing temperature of the porcelain is 1,100° C. or more.

6:

• The dental product according to claim 1, wherein the dental product satisfies the following relation,
• 0<{(coefficient of thermal expansion of the porcelain)/(coefficient of thermal expansion of the zirconia sintered body)}<1.0.

7:

• The dental product according to claim 6, wherein the dental product satisfies the following relation,
• 1.0×10−6K−1≤(coefficient of thermal expansion of the zirconia sintered body)−(coefficient of thermal expansion of the porcelain)≤4.5×10−6K−1.

8:

• A method for manufacturing the dental product of claim 1, comprising the step of forming a porcelain layer on a zirconia sintered body, and firing the porcelain layer at a temperature of 1,350° C. or more.

9:

• A method for manufacturing the dental product of claim 1, comprising the step of forming a porcelain layer on a zirconia pre-sintered body, and firing the zirconia pre-sintered body and the porcelain layer at a temperature equal to or greater than a suitable firing temperature of the zirconia pre-sintered body.

10:

• The dental product according to claim 1, wherein the dental product is at least one selected from the group consisting of a dental prosthesis, an orthodontic product, and a product for dental implants.