US 11,986,367 B2
Method of manufacturing a recess wall lined with bristles for a mouthpiece for simultaneously brushing at a plurality of dental positions, and a recess wall and mouthpiece obtained with the method; and dental cleaning device; and mouthpiece for brushing at a plurality of dental positions, brushing device comprising such mouthpiece, and method of operating such a mouthpiece or brushing device
Joppe Gideon Van Dijk, Delft (NL); Tim Anton Snijder, Delft (NL); and Thomas Van De Water, Delft (NL)
Assigned to DENTAL ROBOTICS GROUP B.V., Delft (NL)
Appl. No. 17/260,945
Filed by DENTAL ROBOTICS GROUP B.V., Delft (NL)
PCT Filed Jul. 16, 2019, PCT No. PCT/NL2019/050452
§ 371(c)(1), (2) Date Jan. 15, 2021,
PCT Pub. No. WO2020/017963, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 2021330 (NL), filed on Jul. 17, 2018; application No. 2021331 (NL), filed on Jul. 17, 2018; and application No. 2021332 (NL), filed on Jul. 17, 2018.
Prior Publication US 2022/0039930 A1, Feb. 10, 2022
Int. Cl. A61C 17/22 (2006.01); A46B 9/04 (2006.01); A46D 3/04 (2006.01); A61C 17/38 (2006.01); A61C 17/34 (2006.01)
CPC A61C 17/228 (2013.01) [A46B 9/045 (2013.01); A46D 3/045 (2013.01); A61C 17/38 (2013.01); A46B 2200/1086 (2013.01); A61C 17/22 (2013.01); A61C 17/34 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a continuous recess wall lined with bristles for a mouthpiece for simultaneously brushing at a plurality of dental positions, the continuous recess wall having an arch-shaped length axis and, viewed transverse to the length axis, a U-shaped cross-section configured for encompassing said plurality of dental positions, and the arch-shaped length axis having a length which spans a distance at least equal to the distance from the left second pre-molar to the right second premolar;
wherein the method comprises a providing step, in which an elongate, continuous, bristled sheet part having a first side lined with a plurality of bristles is provided, the elongate, bristled sheet part defining a length axis extending parallel to the bristled sheet part and, viewed transverse to the length axis, a cross-sectional shape, and wherein the elongate, continuous, bristled sheet part obtained in the providing step has an initial condition in which:
the cross-sectional shape has an initial shape; and
the length axis is arch-shaped;
wherein the method further comprises a transforming step, in which the elongate, continuous, bristled sheet part obtained in the providing step is transformed to a said continuous recess wall having a final condition;
wherein in the final condition:
the cross-sectional shape has a final U-shape;
the length axis is arch shaped;
the first side is a concave inner side of the final U-shape; and
wherein the first side is in the final condition more concave than in the initial condition.