A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.

A method including an acquisition, with an acquisition apparatus, of at least one two-dimensional image of arches of a patient, called updated image, in actual acquisition conditions, a separator separating lips of the patient in order to improve the visibility of patient's teeth, said separator including a register mark, wherein the representation of the register mark on the updated image is used to recut the updated image and/or to roughly assess the actual acquisition conditions and/or to guide the positioning of the acquisition apparatus at the moment of the acquisition of the updated image and/or to identify a dental situation and/or an action to be achieved by the acquisition apparatus.

A method including an acquisition, with an acquisition apparatus, of at least one two-dimensional image of arches of a patient, called updated image, in actual acquisition conditions, a separator separating lips of the patient in order to improve the visibility of patient's teeth, said separator including a register mark, wherein the representation of the register mark on the updated image is used to recut the updated image and/or to roughly assess the actual acquisition conditions and/or to guide the positioning of the acquisition apparatus at the moment of the acquisition of the updated image and/or to identify a dental situation and/or an action to be achieved by the acquisition apparatus.

The present disclosure relates to an LED lighting device for a mobile phone. The LED lighting device for a mobile phone includes a main body to which power is supplied, a fixing portion that is provided at a lower portion of the main body and is detachably coupled to a mobile phone, a lighting unit that is rotatably connected to a front of the main body and emits light when DC power is applied thereto, and a connection bar that connects the main body to the lighting unit.

An assistance system for dental treatment, particularly for changing tooth color, is provided herein, including a measuring device for determining tooth data. The data captured is transmitted from the measuring device to a data processing means. The data processing means includes a camera for capturing a tooth mage. Using a selection means, a color change level for the tooth image or the teeth is specified and, thereafter, the tooth image is adapted based on the selected color change level using an adaptation means. Thus, it is possible to show the patient an image of a color change of his teeth caused by the dental treatment in relation to the appearance of his face, so the patient can judge a color change in relation to his or her face.

An oral appliance hanging device of embodiments of the disclosed technology has a horizontal base supporting vertical walls on top of which are concave indentations opening upwards. Some of the vertical walls can form the upward-facing receptacles and some of the vertical walls can attach to a support base, such as a horizontally-disposed support base. The vertical walls can be spaced apart from each other forming a vertical portal and can include some which are connected only to other vertically disposed walls and some which are connected to the support base. In this manner, liquid can drip on either side or between two vertical walls and on to the support base. Side flanges extending upwards from the horizontal support base and, in some embodiments, forming a unitary structure therewith hold liquid, such as that which drips downwards there-on, until the support base is tilted allowing the liquid to exit or wiped clean.

An oral appliance hanging device of embodiments of the disclosed technology has a horizontal base supporting vertical walls on top of which are concave indentations opening upwards. Some of the vertical walls can form the upward-facing receptacles and some of the vertical walls can attach to a support base, such as a horizontally-disposed support base. The vertical walls can be spaced apart from each other forming a vertical portal and can include some which are connected only to other vertically disposed walls and some which are connected to the support base. In this manner, liquid can drip on either side or between two vertical walls and on to the support base. Side flanges extending upwards from the horizontal support base and, in some embodiments, forming a unitary structure therewith hold liquid, such as that which drips downwards there-on, until the support base is tilted allowing the liquid to exit or wiped clean.

A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.

A system having at least one dental blank and an associated shade guide. The dental blank exhibits a non-uniform color shading, and the shade guide comprises a plurality of shade specimens each exhibiting a particular color shading representing the same color shading present in a partial area within the dental blank. A method of making a dental restoration includes the use of the system. The invention facilitates making a dental restoration having a color shading resembling the color shading of a natural tooth.

[Problem]

To select a dental cement or a trial test material for easily obtaining high color tone adaptability to peripheral tooth substances, in mounting of or trial test of a prosthesis device

[Solution]

To provide a dental cement set consisting of a plurality of dental cements having color tones including color tones of 3 to n colors for selecting and using a dental cement from the plurality of dental cements having the color tones including the color tones of the 3 to n colors after trial test with trial test materials for the dental cement to be used from the plurality of dental cements having the color tones including the color tones of the 3 to n colors, wherein: the amount of information loss Pin with regard to first principal component determined by principal component analysis is less than 2, and . the dental cement set satisfies following Formula 1.

2((CL*.sub.p1CL*.sub.p).sup.2 +(Ca*.sub.p1Ca*.sub.p).sup.2 +(Cb*.sub.p1Cb*.sub.p).sup.2).sup.1/2<8 Formula 1

(wherein p is an arbitrary integer of 2pn)