The disclosure of the present patent application relates to dental restoration procedures, and particularly to a dental shade matching background tool.
The most frequently used technique for matching the shade of a patient's teeth to dental restoration materials involves visual comparison of the patient's teeth to commercially available dental shade guides. For example, the VITA classical A1-D4® shade guide, furnished by VITA North America of Yorba Linda, Calif., provides a set of sixteen shade guide tabs ranging from reddish-brownish to reddish-grayish. The technique involves holding each shade guide separately near the patient's teeth until the closest shade match is found.
While this is a common technique for matching the shade of teeth, it is not perfect. The perception of color may be subjective, and it may also be affected by lighting conditions and background colors in the surrounding environment. Thus, the instructions provided with dental shade guides frequently suggest that the colors in the background be kept as neutral as possible, and that any brightly colored clothing be covered with a gray cloth or drape. To some extent, the problem may be minimized by holding paper having a neutral color behind the shade guide tab. However, this would often require the help of a dental assistant, and may involve bringing unsterile paper in or near the patient's open mouth.
Although various devices and methods have been proposed for minimizing this problem, none have proven entirely satisfactory. Thus, a dental shade matching background tool solving the aforementioned problems is desired.
The dental shade matching background tool has an elongate handle having a handgrip end and a dental shade guide attachment end. The dental shade guide attachment end has an upper surface defining a slot adapted for attaching the handle of a conventional dental shade guide to the tool, which snaps into or forms a friction fit in the slot. An offset neck slopes downward from the dental shade guide attachment end of the handle and has a background tab extending therefrom. The background tab has a face that is coated or covered with a neutral background color, such as gray. The background tab extends parallel to and beneath the tab of a dental shade guide retained in the slot at the dental shade guide attachment end of the handle. Thus, the dental practitioner may keep the patient's mouth open to expose the teeth with one hand while using the other hand to hold the tool and bring the dental shade guide close to the patient's teeth for a shade comparison with the shade guide tab framed against a neutral background color, thereby improving shade selection for the dental restoration material.
These and other features of the present disclosure will become readily apparent upon further review of the following specification and drawings.
Similar reference characters denote corresponding features consistently throughout the attached drawings.
As shown in
Thus, the dental practitioner may keep the patient's mouth open to expose the teeth 32 with one hand while using the other hand to hold the tool 10 and bring the dental shade guide close to the patient's teeth 32 for a shade comparison with the shade guide tab 24 framed against a neutral background color, thereby improving shade selection for the dental restoration material.
It is to be understood that the dental shade matching background tool is not limited to the specific embodiments described above, but encompasses any and all embodiments within the scope of the generic language of the following claims enabled by the embodiments described herein, or otherwise shown in the drawings or described above in terms sufficient to enable one of ordinary skill in the art to make and use the claimed subject matter.
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2464699 | Mar 1981 | FR |