Casting collar for dental impression tray
OwnerHector Camachoinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for facilitating the formation of dental castings utilizing a dental impression tray. A collar assembly is provided which is substantially oval and forms an upstanding peripheral enclosure around the dental impression tray. A rod transversely spans across the oval member and is retained in notches at the upper edge of the oval member. The rods pass through spherical coupling members from which depend dowel pins which can enter into the negative impression and are used for retaining the teeth which are subsequently formed by a casting process.
Claims13
A collar assembly for a dental impression tray, comprising:
- a preformed substantially oval member having a continuous, thin, outer wall which forms an upstanding peripheral enclosure surrounding a dental impression tray, and having an open top and bottom;
- a plurality of notches formed about the upper edge of the wall and opposing ends thereof for supporting depending dowel pins positioned to engage teeth being cast in the tray;
- removable coupling means for securely retaining the dowel pins in place while permitting longitudinal, lateral and axial positioning of the dowel pins comprising
- at least one rod spanning across the longer dimension of the oval member and retained within opposing ones of said notches, and at least one dowel depending therefrom.
A method of forming dental castings, comprising the steps of:
- positioning a preformed oval collar about a dental tray having therein a dental impression;
- sealing the bottom of the oval collar to the dental tray;
- depending dowel pins from an elongated rod;
- spanning the elongated rod across the top of the oval collar;
- and
- adjusting the depending dowel pins in a lateral, longitudinal and axial direction while they are retained depended from the rod;
- said step of depending further comprising inserting a dowel pin in a channel of a spherical coupling member, and passing the rod through an orthoginally non-intersecting channel in the spherical coupling member.
A method of forming dental castings, comprising the step of:
- positioning a preformed oval collar about a dental tray having therein a dental impression;
- sealing the bottom of the oval collar to the dental tray;
- depending dowel pins from an elongated rod;
- spanning the elongated rod across the top of the oval collar;
- and
- adjusting the depending dowel pins in a lateral, longitudinal and axial direction while they are retained depended from the rod;
- said step of spanning further comprising the step of inserting the rod into receiving notches at opposite ends of the oval member.
A method of forming dental castings, comprising the steps of:
- positioning a preformed oval collar about a dental tray having therein a dental impression;
- sealing the bottom of the oval collar to the dental tray;
- depending dowel pins from an elongated rod;
- spanning the elongated rod across the top of the oval collar;
- adjusting the depending dowel pins in a lateral, longitudinal and axial direction while they are retained depended from the rod;
- and
- positioning support ribs transversely across the top of the oval member for providing additional support for the rods.
Dependencies are inferred from the claim text.