A package opener comprises a handle having a first half and a second half. A plurality of blade cartridges are sandwiched between the first half and the second half, wherein the plurality of blade cartridges include at least one package opening blade cartridge, at least dual blade cartridge, and at least one envelope cutting blade cartridge. The package opening blade cartridge is configured at an operative bottom end of the handle. The dual blade cartridge is configured at an operative rear end of the handle. The envelope cutting blade cartridge is configured at an operative front end of the handle.

Apparatus for positioning at least one bracket element at a desired location proximate to at least one respective tooth of a subject include a support body supporting and integrally formed with at least one support arm. The support arm is arranged to locate a respective bracket element at a desired location with respect to a respective tooth. At least one locating element serves to locate the support body relative to at least one tooth of a subject.

Apparatus for positioning at least one bracket element at a desired location proximate to at least one respective tooth of a subject include a support body supporting and integrally formed with at least one support arm. The support arm is arranged to locate a respective bracket element at a desired location with respect to a respective tooth. At least one locating element serves to locate the support body relative to at least one tooth of a subject.

The invention relates to a dental orthosis, which includes a body having an inner surface and an outer surface, the body being arranged to homothetically cover a portion of a dental crown, an attachment having a gap and engaging with no degree of freedom with the outer surface of the body. The outer surface of the body advantageously includes a regular protrusion, the protrusion being arranged to constitute the attachment by material shrinkage, the body and protrusion being made as a single part.

Orthodontic brackets are disclosed. An orthodontic bracket is formed such that the body and mesh portions are formed integrally in one piece, and the tooth-side mounting surface includes bonding elements that have an undercut angle to the mounting surface. The bonding elements can further include geometry to facilitate the spreading of bonding material. In some aspects, the bracket can also comprise elements for wire-mounting and aligner tray interaction. A system and methods of treatment are further disclosed. The bracket can be customized for an individual patient.

Orthodontic brackets are disclosed. An orthodontic bracket is formed such that the body and mesh portions are formed integrally in one piece, and the tooth-side mounting surface includes bonding elements that have an undercut angle to the mounting surface. The bonding elements can further include geometry to facilitate the spreading of bonding material. In some aspects, the bracket can also comprise elements for wire-mounting and aligner tray interaction. A system and methods of treatment are further disclosed. The bracket can be customized for an individual patient.

A method for determining orthodontic brackets in order to use standard brackets or a combination of standard and custom brackets. The method determines which teeth in a digital 3D model of teeth have surfaces that will virtually fit to a base of a standard bracket within a tolerance. For those teeth that will virtually fit to one of the standard brackets, each of the teeth are associated with the corresponding standard bracket for later placement of the brackets on the surfaces of the patient's teeth. The method also identifies the teeth in the digital 3D model of teeth that will not virtually fit to a standard bracket, and brackets with custom bases can be designed and made for those teeth.

The present invention relates to an orthodontic bracket that is capable of coping with stress applied in various directions in oral environments to stably treat malocclusion. According to the present invention, the orthodontic bracket includes: a base having a bonding reference surface coming into contact with a tooth and a plurality of unit engraved patterns slant inward to given depths from the bonding reference surface to allow a bonding agent for bonding the tooth thereto to be accommodated therein; and a body provided on top of the base and having a slot adapted to insert a wire thereinto.

The present invention relates to an orthodontic bracket that is capable of coping with stress applied in various directions in oral environments to stably treat malocclusion. According to the present invention, the orthodontic bracket includes: a base having a bonding reference surface coming into contact with a tooth and a plurality of unit engraved patterns slant inward to given depths from the bonding reference surface to allow a bonding agent for bonding the tooth thereto to be accommodated therein; and a body provided on top of the base and having a slot adapted to insert a wire thereinto.

An orthodontic appliance, an orthodontic device, and associated systems and methods are disclosed herein. In some embodiments, the orthodontic appliance is configured to orthodontically treat an impacted tooth. In some embodiments, the orthodontic device comprises a retention portion configured to be secured to one or more of the patients nonimpacted teeth and an arm extending away from the retention portion. The arm can include a first end portion at the retention portion and a second end portion configured to be positioned adjacent to the impacted tooth. The second end portion of the arm can be configured to indicate a portion of the patient's oral tissue overlying the impacted tooth to be surgically altered. In some embodiments, the second end portion of the arm can be configured to detachably couple to an orthodontic bracket and/or position the orthodontic bracket on or adjacent to an exposed portion of the impacted tooth.