US 4,902,227 AGranted

Dental treatment tray

AssigneePascal Kabushiki Kaisha

InventorLawrence C. Smith

Life of this patent

Estimating the term…

Loading patent…

Abstract

A molded, one-piece plastic dental treatment tray for applying fluoride or other medication to a patient's teeth. The tray has a pair of elongated locking flanges on one of its handles which engage the lateral edges of the other of its handles to hold the tray folded up with its two teeth receiving troughs in an aligned, assembled relationship. At least one of the handles is molded at an angle with respect to the bottom of its trough to help ensure that when the tray is folded up, the free ends of its troughs are urged into contact with each other, to enable the tray to be inserted more easily into the patient's mouth. The bottoms of the troughs are flat and smooth enough for them to move easily over each other in any direction while in the patient's mouth, so the tray will better accommodate any individual differences in the mouth, jaws or teeth of the particular patient.

Claims12

Dependent claims

A dental treatment tray for applying medication to a patient's teeth, wherein said tray comprises:

a pair of troughs;
wherein each of said troughs has an exterior trough bottom;
wherein one of said troughs is sized to receive said patient's upper teeth;
wherein the other of said troughs is sized to receive said patient's lower teeth;
and wherein said troughs are also sized to be adapted to receive said medication;
a resilient trough handle extending outwardly from each trough;
and
a pair of resilient elongated locking flanges;
wherein each of said locking flanges extends along a respective lateral edge portion of one of said trough handles;
wherein each of said locking flanges defines an elongated locking recess that is sized and shaped to be adapted to receive a corresponding lateral edge of the other of said handles;
wherein each of said locking flanges is sized and shaped to be adapted to resiliently engage its said corresponding lateral edge of the other of said handles in its said elongated locking recess, to releasably hold said troughs in an assembled relationship with said trough bottoms facing each other;
and wherein when each of said locking flanges has engaged its said corresponding lateral edge of the other of said handles, a top portion of each of said locking flanges extends over a corresponding top portion of its said corresponding lateral edge of the other of said handles.

9 more elements

A dental treatment tray for applying medication to a patient's teeth, wherein said tray comprises:

a pair of troughs;
wherein each of said troughs has an exterior trough bottom;
wherein one of said troughs is sized to receive said patient's upper teeth;
wherein the other of said troughs is sized to receive said patient's lower teeth;
and wherein said troughs are also sized to be adapted to receive said medication;
a resilient trough handle extending outwardly from each trough;
and
means for holding said handles and said troughs in an assembled relationship with said trough bottoms facing each other;
wherein said dental treatment tray has a folded configuration in which said troughs are in said assembled relationship with said trough bottoms facing each other;
wherein said dental treatment tray has an unfolded configuration in which said trough bottoms do not face each other;
wherein each of said troughs has a pair of free ends;
and
wherein, when said dental treatment tray is in said unfolded configuration, at least one of said trough handles extends at an angle with respect to a plane of its respective said trough bottom, to help ensure that when said troughs are in said assembled relationship said free ends of said troughs are urged into contact with each other, to help said tray to be more easily inserted into said patient's mouth.

10 more elements

Dependencies are inferred from the claim text.