A double packaging structure for an object, which may be a sterile object, includes a hollow external container having a closed first end, an open second end and walls, and an internal container disposed inside the external container. The internal container includes a hollow body and a cap. The object is intended to be received in the body. To close its first end, the external container has a membrane capable of deforming when pressure is applied to the membrane. The membrane is configured so that a pressure applied to its outer face, along the longitudinal axis, pushes its inner face against the inner container and causes the inner container to exit at the second end of the external container in the absence of a closure system at the second end.

Orthodontic appliances formed from a material that includes an interpenetrating polymer network or semi-interpenetrating polymer network material to prevent or reduce stress relaxation of the material during use by a patient. Methods for forming orthodontic appliances from a material that includes from an interpenetrating polymer network or semi-interpenetrating polymer network material to prevent or reduce stress relaxation of the material during use by a patient.

A method of treating or self-treating an orthodontic patient wearing braces or aligners to straighten their teeth using an orthodontic tool in the form of a tool set having at least three arms coupled together at one end by a fastener. The arms are rotatably movable about the fastener. One arm of the tool set has a sanding tool. Another arm has a hook. A third arm has a pick. The method includes utilizing the tool set by extending one of the arms outwardly from the other arms and inserting the leading end of the arm into the patient's mouth to perform the function.

A lip/cheek retainer particularly suitable for use with an intraoral scanner is provided, having a film made from an elastomer, a lip ring and a vestibular ring, with the film extending between the lip ring and the vestibular ring, being held taut by these and forming a tubular section between them. It is provided that the film (20) is prefabricated on the inner side (32) of its tubular section with a sliding element (36), in particular altering the surface of the film (20) there, produced by a surface treatment and firmly bonded to the film (20), with a sliding friction coefficient μG of less than 1.5, preferably less than 1.

The present invention relates to a dental drill (10) formed of titanium or a titanium alloy having a hardness greater than pure titanium, said drill extending along a central axis (A) from a proximal end (14) to a distal end (16). The drill comprises a shank (12) arranged in a proximal end region of the drill (10) and extending along the central axis (A), a flute portion (20) arranged distally to and running coaxially with the shank (12), said flute portion (20) comprising two or more flutes (22a, 22b, 22c) extending along the flute portion (20) and being interposed by lands (24a, 24b, 24c), the flute portion further comprising a central solid web and a drill tip (26) directly adjoining the distal end (28) of the flute portion (20) and comprising two or more flanks (25a, 25b, 25c) which taper radially inwardly from the distal end of each land in the distal direction toward the central axis (A), each flank (25a, 25b, 25c) comprising a cutting edge (30a, 30b, 30c). According to the invention, at the distal end of the drill point (26) at least one groove (32, 33a, 33c) is formed in the web such that the distal most end (36a, 36b, 37b, 37c) of at least one of the flanks (25a, 25b, 25c) is located radially remote from the central axis (A).

An orthodontic appliance having a transitory flexural modulus, which lowers when applied to an environmental condition, such as heat. The lowered flexural modulus causes the appliance to become more flexible and therefore have less initial discomfort. As the appliance is worn, it cools to gradually increase the flexural modulus and apply greater orthodontic force to teeth.

A bar for connecting dental implants, the bar provided to be received in a cavity of a component of a dental prosthesis, a base made of a biocompatible material including a high-performance polymer, and the base including recesses and the bar including click elements that are received in the respective recesses, the click elements provided for making click connections for connecting the bar to the dental implants, assembly of an overdenture and the bar, and an overdenture.

A disposable, inflatable, matrix (tooth dam) used to form a temporary, removeable side wall for the placement of a tooth filling material. It establishes the original dental anatomy of the tooth, and maintains the correct contact between adjacent teeth for flossing purposes and gingival health. It accomplishes this by inflating a pair of self-sealing air chambers that extend from the back face of a planar panel that they are formed on, such that these chambers contact and press against the adjacent tooth and exert enough force to elastically secure the planar panel without wedges and clamps. It prevents the tooth filling material from leaving the prepared tooth and entering the space between the teeth to enhance flossing and proper dental hygiene. This device will greatly enhance patient comfort, procedural efficiency and consistency.

The invention relates to the field of medicine, namely dentistry, and can be used for dental rebuilding without tooth facing. The technical result lies in improving the fixation strength of ceramic veneers without tooth facing. This result is achieved in the method of mounting ceramic veneers comprising surface preparation of at least one veneer, surface preparation of at least one tooth and their coupling using light-cured adhesive cement by means of sandblasting of the tooth surface during its preparation with aluminum oxide powder Al2O3, etching by orthophosphoric acid for 15-30 seconds followed by washing and drying, surface treatment with adhesive for 15-20 seconds, application of a bonding agent, and by means of veneer surface etching with hydrofluoric acid during its preparation followed by treatment with a ceramic primer for one minute and application of a bonding agent on the surface.

A periodontal tissue regeneration inducer and an apparatus and a method for manufacturing the same are provided. The periodontal tissue regeneration inducer includes a sheet body formed of a flexible material, and a pattern layer having a pattern formed therein to facilitate bone formation or regeneration on a surface of the sheet body. Therefore, the periodontal tissue regeneration inducer and the apparatus and method for manufacturing the same have an advantage in that the bone formation or regeneration may be facilitated during implant surgery because the membrane sheet is composed of a polycaprolactone (PCL) material and a nanopattern is formed on a surface of the pattern layer.