US 11,723,757 B2
Dental material dispensing device and a method of dispensing a dental material
Christian A. Richter, Feldafing (DE); Anja Friedrich, Gilching (DE); Thomas Müller, Gauting (DE); and Rudolf Schmid, Eichenau (DE)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Sep. 16, 2020, as Appl. No. 16/948,388.
Application 16/948,388 is a continuation of application No. 15/571,956, abandoned, previously published as PCT/US2016/033296, filed on May 19, 2016.
Claims priority of application No. 15169798 (EP), filed on May 29, 2015.
Prior Publication US 2020/0405454 A1, Dec. 31, 2020
Int. Cl. A61C 9/00 (2006.01); A61C 13/15 (2006.01)
CPC A61C 9/0026 (2013.01) [A61C 9/0033 (2013.01); A61C 19/004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of dispensing a dental material prepared from a dental composition, comprising the steps of:
providing a device for dispensing the dental material, the device including a receptacle for receiving the dental composition;
the device having cure control comprising a light source and an internal flow path on which the dental composition and/or the dental material flows past the light emitted from the source during dispensation;
using the device for urging the dental composition and/or the dental material toward a dispensing opening, the flow path disposed upstream from the opening;
dispensing from the device a coherent strand of dental material in a dispensing cycle; and
within the dispensing cycle: operating the device in a first dispensing mode in which the device dispenses a dental retraction material and additionally in a second dispensing mode in which the device dispenses a flowable dental impression material;
exposing the dental composition and/or the dental material to a specific energy by control of the light source and/or by control of the speed of the flow of the dental composition and/or the dental material on the flow path;
wherein the specific energy is quantified by the energy intensity the dental composition and/or the dental material is exposed to relative to the flow speed; and
wherein the ratio between the specific energy in the second dispensing mode and the specific energy in the first dispensing mode is smaller than 1.