摘要:
A tool for obtaining a dental occlusion in an edentulous patient has a main body (1) including a rear curved plate (1a) to be positioned at an intraoral buccal of maxillary and mandibular ridges of the edentulous patient, a front curved plate (1b) to be positioned at extraoral upper and lower lips of the edentulous patient, a connecting part (1c) that connects respective intermediate parts of the rear curved plate (1a) and the front curved plate (1b) along a vertical direction, and a through-hole (1d) that penetrates the rear curved plate (1a), the front curved plate (1b), and the connecting part (1c), wherein a position of the main body (1) is fixed in a state in which the connecting part (1c) is held between the upper and lower lips, and an adjusting shaft (2) inserted into the through-hole (1d), and has one end thereof projecting extraorally from a center between the upper and lower lips, and another end which has a tongue support (2a), thereof intraorally holding a tip end of a tongue, wherein the adjusting shaft (2) adjusts a position of the tongue support (2a) to suppress movement of the tongue when obtaining the dental occlusion.
摘要:
An occlusal wear evaluation apparatus capable of evaluating quantitatively an occlusal wear of a used denture reads three dimensional data of a denture before use and three dimensional data of the denture after use, calculates a difference in a set value of an articulator allowing the maxillary dental arch and the mandibular dental arch of the denture to occlude between the denture before use and the denture after use, by way of stimulating movements of a jaw in the articulator with the three dimensional data of the denture before use and the three dimensional data of the denture after use, and indicates the calculated difference.
摘要:
The invention relates to a method for recording individual three-dimensional optical images (1) to form a global image (50) of a tooth situation comprising an upper jaw (2) and a lower jaw (3). A first 3D model (6) of a first subsection of the upper jaw and a second 3D model (8) of a second subsection of the lower jaw are produced from the individual images. Subsequently, a geometric positional relationship between the first 3D model (6) and the second 3D model (8) is determined, said positional relationship being determined by using a lateral image (20, 21, 22) and/or using a contact pattern (31, 32). Said lateral image (20, 21, 22) comprises an image area which comprises at least part of the first subsection of the upper jaw (2) and at least part of the second subsection of the lower jaw (3). Said contact pattern comprises several contact areas (31, 32) between the upper jaw and the lower jaw. Said contact pattern (30, 31, 32) is measured by means of an occlusion paper (29).
摘要:
Method for using data of a patient for adjusting the teeth, comprising of: making a first and second photographic image of a front view and a side view of the patient; calculating on the basis of the first and second photographic images: a first measure for the direction of the canine line relative to the eye line, a second measure for the direction of the occlusion plane relative to the camper's plane; providing a study model; providing a master model on the basis of the study model; transferring the first and second measures to the master model.
摘要:
Disclosed is an articulator to check the alignment of teeth by attaching upper and lower jaw models. Upper and lower jaw parts have simple movement structures, the occlusal error of upper and lower jaw models is minimized, and the upper and lower jaw models are accurately mounted on an occlusal plane. A conventional articulator is manufactured by emulating the shape of upper and lower jaw movement and has a folding structure in which the position of the reference axis of the articulator corresponds to the condyle. The articulator has a structure except for the movement of a specific muscle, so that errors occur in upper and lower jaw movement. Even if the errors are reduced by using various auxiliaryunits, the post-process is essentially required. Occlusion is not accurately performed in the conventional articulator, but the structure of the articulator is excessively complicated and a worker has difficulty with the work. In a non-arcon type articulator, a reference axis is formed on a line extending from a central plane of the upper and lower jaw fixing members, such that the tangential line of the rotation movement is perpendicular to the occlusal plane. The non-arcon type articulator moves up or down more similarly to physiological movement when comparing with the conventional articulator to finely adjust the occlusal state by using an auxiliary unit, so that the error margin of the articulator is minimized, and the operating structure and the use of the upper and lower jaw fixing members are simplified.
摘要:
An auxiliary device for an articulator includes a base and at least an adjusting structure. The base is provided for positioning an articulator, and the adjusting structure is disposed on the base. The adjusting structure includes a first ball joint, a second ball joint and a connecting assembly. The first ball joint is connected to the base, and the two ends of the connecting assembly are connected to the first ball joint and the second ball joint, respectively. The adjusting structure is moved relatively to the articulator by the movement of at least one of the first ball joint and the second ball joint, thereby adjusting the position of a dental cast disposed on the articulator. The auxiliary device is advantageous for conveniently adjusting the dental cast disposed on the articulator and accelerating the process of the preoperative planning.
摘要:
An occlusal wear evaluation apparatus capable of evaluating quantitatively an occlusal wear of a used denture reads three dimensional data of a denture before use and three dimensional data of the denture after use, calculates a difference in a set value of an articulator allowing the maxillary dental arch and the mandibular dental arch of the denture to occlude between the denture before use and the denture after use, by way of stimulating movements of a jaw in the articulator with the three dimensional data of the denture before use and the three dimensional data of the denture after use, and indicates the calculated difference.