Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High density and natural color molded zirconia crowns manufactured by production process
The present invention relates to a pre-formed zirconia crown for restoring teeth, which is manufactured by injection molding and sintering, secures color by an immersion method, and has a dense structure through isostatic heating. According to the present invention, a method for manufacturing a pre-formed zirconia crown having a dense structure and aesthetic impression comprises: a step of molding zirconia power with 3 to 5% of yttria added thereto by injection molding; a preliminary sintering step of sintering the zirconia power to perform degreasing; a primary cooling step of cooling the preliminary sintered body; a two-step heat treatment step of heat-treating the cooled preliminary sintered body; a cooling step of cooling the heat-treated body; a step of immersing the heat-treated body in an aqueous metal chloride solution and drying the same; a step of performing secondary sintering and cooling; and a step of performing sintering through isostatic heating. Accordingly, the method provides effects of making an aesthetic pre-formed zirconia crown close to a natural tooth and securing a production capacity capable of performing mass-production.
본 발명은 사출성형 및 소결로 제작하고, 침지방식으로 색조를 확보하고 등방압 가열을 통해 치밀한 조직을 형성하는 치아수복용 지르코니아 기성형 크라운에 관한 것이다. 본 발명은, 이트리아가 3~5%첨가된 지르코니아 분말을 사출방식으로 성형하는 단계, 이를 소결하여 탈지하는 예비 소결단계 및 냉각하는 1차 냉각단계, 상기 냉각된 예비 소결체를 열처리하는 2단계 열처리단계 및 냉각하는 냉각단계, 이를 금속염화물 수용액에 침지 및 건조하는 단계, 이를 2차소결 및 냉각하는 단계, 이를 등방 가압 소결하는 단계를 포함하는 것을 특징으로 한다. 이에 자연치에 근접한 심미적 지르코니아 기성형 크라운을 제작할 수 있으며 대량생산이 가능한 생산량을 확보하는 효과를 제공한다.
High density and natural color molded zirconia crowns manufactured by production process
The present invention relates to a pre-formed zirconia crown for restoring teeth, which is manufactured by injection molding and sintering, secures color by an immersion method, and has a dense structure through isostatic heating. According to the present invention, a method for manufacturing a pre-formed zirconia crown having a dense structure and aesthetic impression comprises: a step of molding zirconia power with 3 to 5% of yttria added thereto by injection molding; a preliminary sintering step of sintering the zirconia power to perform degreasing; a primary cooling step of cooling the preliminary sintered body; a two-step heat treatment step of heat-treating the cooled preliminary sintered body; a cooling step of cooling the heat-treated body; a step of immersing the heat-treated body in an aqueous metal chloride solution and drying the same; a step of performing secondary sintering and cooling; and a step of performing sintering through isostatic heating. Accordingly, the method provides effects of making an aesthetic pre-formed zirconia crown close to a natural tooth and securing a production capacity capable of performing mass-production.
본 발명은 사출성형 및 소결로 제작하고, 침지방식으로 색조를 확보하고 등방압 가열을 통해 치밀한 조직을 형성하는 치아수복용 지르코니아 기성형 크라운에 관한 것이다. 본 발명은, 이트리아가 3~5%첨가된 지르코니아 분말을 사출방식으로 성형하는 단계, 이를 소결하여 탈지하는 예비 소결단계 및 냉각하는 1차 냉각단계, 상기 냉각된 예비 소결체를 열처리하는 2단계 열처리단계 및 냉각하는 냉각단계, 이를 금속염화물 수용액에 침지 및 건조하는 단계, 이를 2차소결 및 냉각하는 단계, 이를 등방 가압 소결하는 단계를 포함하는 것을 특징으로 한다. 이에 자연치에 근접한 심미적 지르코니아 기성형 크라운을 제작할 수 있으며 대량생산이 가능한 생산량을 확보하는 효과를 제공한다.
High density and natural color molded zirconia crowns manufactured by production process
생산성을 높인 공정으로 치밀한 조직과 심미성을 획득한 지르코니아 기성형 크라운
LEE TAE SUNG (Autor:in) / KIM BYOUNG SUL (Autor:in) / KIM CHAN GUN (Autor:in) / KIM KYEONG HEE (Autor:in)
21.04.2021
Patent
Elektronische Ressource
Koreanisch
Preparation of zirconia dental crowns via electrophoretic deposition
| British Library Online Contents | 2006
Measuring Mechanical Properties of Zirconia Dental Crowns by Nanoindentation
| Trans Tech Publications | 2013
Measuring Mechanical Properties of Zirconia Dental Crowns by Nanoindentation
| British Library Conference Proceedings | 2014
Measuring Mechanical Properties of Zirconia Dental Crowns by Nanoindentation
| British Library Online Contents | 2014