Process of manufacturing a dental milling block with a homogeneous color and/or translucency gradient

    公开(公告)号:US11998408B2

    公开(公告)日:2024-06-04

    申请号:US18015338

    申请日:2021-07-19

    Abstract: The invention relates to a process of manufacturing a dental milling block with a homogeneous color and/or translucency gradient. This process comprises the steps of providing a mold with a cavity having a z-direction and an x/y-direction, filling the cavity partially with a first powder up to a height H1, the first powder having a volume VP1 with a top and bottom surface, introducing a second powder on top of the first powder up to a height H2, the second powder having a volume VP2 with a top and bottom surface and, the top surface of the first powder being in contact with the bottom surface of the second powder and forming an intermediate region, providing a mixer unit with at least one rotatable mixing element, introducing the rotating mixing element in z-direction into the intermediate region, mixing the powder located in the intermediate region by rotating the mixing element, removing the rotating mixing element from the powder, compacting the powder, optionally applying heat to the compacted powder, the first powder differing from the second powder by its physical properties and/or chemical composition and/or color. The invention also relates to a process of producing a dental restoration using dental milling block obtainable according to this process.

    Sterilization Indicator Reading Apparatus and Method

    公开(公告)号:US20250121110A1

    公开(公告)日:2025-04-17

    申请号:US18695948

    申请日:2022-09-08

    Abstract: A sterilization indicator reading apparatus includes a housing, at least one well formed from a portion of the housing and dimensioned to receive a sterilization indicator, at least one heating element thermally coupled to a coupling portion of the well, at least one sensor configured to sense at least one parameter associated with the sterilization indicator received within the well and generate response signals upon sensing the parameter, and a processor communicably coupled to the heating element and the sensor. The processor is configured to control the heating element to achieve a first preset temperature of the well from a first instance of time after receiving a first response signal from the sensor, and to control the heating element to achieve a second preset temperature of the well upon receiving a second response signal from the sensor, or after a predetermined time duration from the first instance of time.

    Apparatus, system, method of post-curing an article, and post-cured article

    公开(公告)号:US12268567B2

    公开(公告)日:2025-04-08

    申请号:US17637488

    申请日:2020-09-08

    Abstract: The apparatus (1000) includes a housing (110), a chamber (120) disposed in the housing, at least two light emitting diodes (LEDs) (130) disposed within the housing (110), and a user interface (140) disposed on an exterior (112) of the housing. The chamber (120) is adaptable to each of an open, closed, and hermetically sealed configuration. The chamber (120) includes a material transparent to actinic radiation and light from the LEDs (130) enters the chamber from more than one direction. The user interface (140) includes a display (142) and program switches (144) configured to adjust at least three operational parameters of the apparatus. The apparatus (1000) further includes a vacuum pump (150) operatively coupled to the chamber (120). The system includes the apparatus (1000) and an article (180). An article includes layers of at least one photopolymerized crosslinked composition and a low extractable component content. A method of post-curing an article includes obtaining an article (180), placing the article in an apparatus (1000), inputting a post-cure program or accessing a saved post-cure program through the user interface (140), and running the post-cure program. The post-cure program includes light intensity provided by a light source (130) and length of time of light provided by the light source (130), plus a delay time between initiation of light provided by the light source (130) and initiation of vacuum pulled by the vacuum pump (150) and/or a delay time between initiation of vacuum pulled on an interior of the chamber (120) by the vacuum pump (150) and initiation of light provided by the light source (130).

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