Abstract:
A dental impression injection tray (10, 10a, 10b, 100, 120, 140, 160, 180) for forming a dental impression of a dental structure (1, 2, 3) includes a tray body (12, 102, 122, 142, 166, 182) defining an impression cavity (14, 103, 123, 149, 168, 184) sized to receive the dental structure. At least one injection port (16, 20, 105, 150, 170, 186) is formed on the tray body and communicates with the impression cavity, and is adapted to direct a supply of impression material into the impression cavity. A plurality of gingival sealing elements (30-36, 30a-36a, 30b-36b, 106-112, 126-132, 154-158, 185, 194, 196) are coupled to the tray body and are adapted to sealingly engage gum surfaces adjacent to the dental structure and block the impression material from escaping the impression cavity during injection of the impression material into the impression cavity. A system (210) for forming a dental impression may include the dental impression injection tray (212), an impression material delivery device (214), and a pressure control mechanism (214, 218, 220) that controls a pressure of the impression material inside of the impression cavity.
Abstract:
A system which has a static mixer and which contains a dental material. The static mixer has a mixing barrel that extends along a longitudinal axis and, accommodated therein, a cascade of mixing elements. Mixing elements have an outer diameter D of between 1.5 mm and 1.6 mm. The barrel has an inner diameter corresponding to the outer diameter of the mixing elements. The system helps minimizing any residual dental material in the mixer and minimizing forces for extruding the dental material through the mixer.
Abstract:
The invention relates to a syringe, in particular for dispensing flowable dental materials, comprising a syringe housing, at least two storage chambers (12 and 14) for dental materials, which lie transversely adjacent to each other as viewed in the dispensing direction, and a mixing device (36), which has two mixing channels (54, 56, 58, and 60), wherein each mixing channel is connected to the outlet of a storage chamber (12 and 14). The mixing device (36) has a mixing zone (80), which is connected to a pre-mixing zone (64). The pre-mixing zone (64) has two inlets, one for each of the dental materials to be mixed, and an outlet, wherein the inlets point toward each other. The outlet of the pre-mixing zone (64) extends perpendicularly to the inlets. The inlet of the mixing zone (80) is connected to the outlet of the pre-mixing zone (64). The mixing zone (80) has an impact element for deflecting the pre-mixed flow of the dental materials to an outlet of the mixing zone (80).
Abstract:
A device for dispensing a dental material has a cartridge and a ball-shaped closure member. The cartridge and the closure member in combination form a rotary slide valve for selectively opening and closing a cartridge outlet for the dental material, such that the device can be operated between an operative position in which the cartridge outlet is open and a storage position in which the cartridge outlet is closed. The device further has a cannula which is removably receivable within the closure member. The cannula in the operative position of the device is mechanically locked against removal. The cannula further has an annular seal which in the operative position extends into the outlet.
Abstract:
Delivery systems for in situ forming foam formulations are provided. The devices may include various actuation mechanisms and may entrain air into fluid formulation components in a variety of ways, including mixing with air and the addition of compressed gas.
Abstract:
Die Erfindung betrifft einen Mischer (1) zum Mischen von zwei Komponenten, insbesondere eines aushärtbaren Dentalmaterials. Der Mischer (1) weist ein Mischergehäuse (2), ein Mischelement (4) und einen Deckel (3) auf. In dem Mischer (1) ist eine ringförmige Kammer (17) ausgebildet, die mit dem Mischraum des Mischergehäuses (2) stromungsverbunden ist. Die Kammer (17) ist durch den Deckel (3) sowie einer auf dem Mischelement (4) vorgesehen Platte (18) begrenzt. Von den in dem Mischer (1) mündenden Einlassstutzen (12, 13) mündet ein erster in die Kammer (17), während der andere stromabwärts der Platte (18) in den Mischraum mündet.
Abstract:
본 발명은 자동형 치과인상재 혼합 믹싱팁에 관한 것으로, 더욱 상세하게는 하우징의 상부에 설치되는 덮개의 하부에 하단끼움부가 하측으로 돌출되게 형성되어서 사용 후 폐기하는 믹싱팁 내에 남아 있게 되는 인상재의 잔여 량을 최소화할 수 있게 하고, 스크류에 형성되는 1차혼합구는 외주에 V홈을 형성하고, 상하부륜의 양측에 수직날개부를 형성하며 그 상하부륜에 다수개의 상하부수직홈이 어긋나는 구조로 형성함에 따라 경화제와 베이스와의 혼합이 고르게 잘 될 수 있도록 하기 위한 것이다.
Abstract:
Ein dynamischer Mischer (1, 100) für eine Mehrzahl von fluiden Komponenten enthält ein Gehäuse (2, 102) und ein Rotorelement (3, 103), welches in dem Gehäuse drehbar angeordnet ist, wobei das Gehäuse eine Einlassöffnung (12, 13, 112, 113) für zumindest je eine Komponente und mindestens eine Auslassöffnung (20, 120) aufweist. Zwischen dem Rotorelement und dem Gehäuse ist ein ringförmiger Zwischenraum vorgesehen, in welchem ein mit dem Rotorelement verbundenes Mischelement (7, 107) angeordnet ist. Das Mischelement weist ein Flügelelement (23, 43, 53) auf, welches als Leitelement zur Förderung der Komponenten von der Einlassöffnung zu der Auslassöffnung ausgebildet ist. Das Flügelelement (23, 43, 53) ist ein Leitelement und weist eine Leitfläche (25, 45, 55) auf, die eine konkave Krümmung bezogen auf die Auslassöffnung (20, 120) aufweist und anströmseitig weiter entfernt von der Auslassöffnung (20, 120) ist als abströmseitig.
Abstract:
A mixer (10) for preparing a dental material comprises a mixing barrel (17) and a mixing rotor (16), a mixer inlet (13, 14), and an outlet (15). The mixing rotor is rotatable about a rotation axis (A), and comprises four mixing paddle levels (21, 22, 23, 24) each comprising at least one mixing paddle. The mixing paddle levels are axially disposed over a portion of the mixing rotor with the paddle levels being axially spaced at a generally uniform paddle spacing. The mixing paddles further have a thickness in the dimension parallel to the rotation axis, and the ratio between the paddle spacing and the paddle thickness is at least 2:1, thereby maximizing the mixing efficiency, and minimizing energy consumption.