An oral scanner including a heating element, a reflecting element and a temperature difference generating element is provided. The temperature difference generating element has a high temperature end and a low temperature end. The high temperature end is connected to the reflecting element to heat the reflecting element, and the low temperature end is connected to the heating element to cool the heating element.

Oral cavity interior visualisation device for indirect visualisation of the interior of an oral cavity, comprising a handle (1), through the interior of which runs a duct (4) for supplying a compressed air flow, a circular mirror (3), and a support (2) attachable to the handle (1) for suspension of the mirror (3), through the interior of which runs the compressed air flow. The support (2) comprises a semi-circular base (13) located at a distal end of the support (2), and a perimeter groove in the base (13) for housing the mirror (3). The base (13) incorporates a semi-circular air diffuser (14), which extends around the entire perimeter of the base (13), for directing the compressed air circulating inside the support (2) over the surface of the mirror (3) in the form of a continuous laminar flow.

Oral cavity interior visualisation device for indirect visualisation of the interior of an oral cavity, comprising a handle (1), through the interior of which runs a duct (4) for supplying a compressed air flow, a circular mirror (3), and a support (2) attachable to the handle (1) for suspension of the mirror (3), through the interior of which runs the compressed air flow. The support (2) comprises a semi-circular base (13) located at a distal end of the support (2), and a perimeter groove in the base (13) for housing the mirror (3). The base (13) incorporates a semi-circular air diffuser (14), which extends around the entire perimeter of the base (13), for directing the compressed air circulating inside the support (2) over the surface of the mirror (3) in the form of a continuous laminar flow.

A protective sleeve comprises a housing configured to fit over a portion of an intraoral scanning device and protect the intraoral scanning device from an external environment. The intraoral scanning device comprises a first aperture for transmission of optical signals, the housing defines a second aperture for transmission of the optical signals, and the second aperture is aligned with the first aperture when the housing is fit over the portion. The protective housing comprises one or more supports attached to the housing and a transparent element secured by the one or more supports and aligned with the second aperture. The transparent element is further aligned with a defogging element of the intraoral scanning device when the housing is fit over the portion, and an external surface of the transparent element is to receive heat generated by the defogging element to prevent fogging of the transparent element.

In a first example, a nasopharyngeal mirror device includes a handle, a convex mirror configured to move with respect to the handle, and an anti-fogging device configured to reduce condensation on the convex mirror. In a second example, a method includes inserting a convex mirror of a nasopharyngeal mirror device into a mouth of a patient and moving the convex mirror with respect to a handle of the nasopharyngeal mirror device such that a tissue of interest of the patient is viewable within the convex mirror. The method also includes capturing an image of the tissue of interest with a camera of the nasopharyngeal mirror device while the tissue of interest is viewable within the convex mirror.

In a first example, a nasopharyngeal mirror device includes a handle, a convex mirror configured to move with respect to the handle, and an anti-fogging device configured to reduce condensation on the convex mirror. In a second example, a method includes inserting a convex mirror of a nasopharyngeal mirror device into a mouth of a patient and moving the convex mirror with respect to a handle of the nasopharyngeal mirror device such that a tissue of interest of the patient is viewable within the convex mirror. The method also includes capturing an image of the tissue of interest with a camera of the nasopharyngeal mirror device while the tissue of interest is viewable within the convex mirror.

A 3D scanner for recording topographic characteristics of a surface of at least part of a body orifice, where the 3D scanner includes a main body having a mounting portion; a tip which can be mounted onto and un-mounted from the mounting portion, where the tip is configured for being brought into proximity of the body orifice surface when recording the topographic characteristics such that at least one optical element of the tip is at least partly exposed to the environment in the body orifice during the recording; and a heater for heating the optical element, where the heat is provided by way of thermal conduction; where the tip can be sterilized in a steam autoclave when un-mounted from the main body of the 3D scanner such that it subsequently can be reused.

A 3D scanner for recording topographic characteristics of a surface of at least part of a body orifice, where the 3D scanner includes a main body having a mounting portion; a tip which can be mounted onto and un-mounted from the mounting portion, where the tip is configured for being brought into proximity of the body orifice surface when recording the topographic characteristics such that at least one optical element of the tip is at least partly exposed to the environment in the body orifice during the recording; and a heater for heating the optical element, where the heat is provided by way of thermal conduction; where the tip can be sterilized in a steam autoclave when un-mounted from the main body of the 3D scanner such that it subsequently can be reused.

A system comprises a dental tray comprising an array of fixed focus cameras, wherein each fixed focus camera of the first array of fixed focus cameras has a fixed position and orientation relative to one or more other fixed focus camera of the array of fixed focus cameras. The system further comprises a processing device to receive a plurality of images generated by the array of fixed focus cameras, stitch the plurality of images together based on calibration data specifying predetermined image stitching parameters for combining the plurality of images, wherein the predetermined image stitching parameters are based on predetermined fixed relative positions and orientations of fixed focus cameras from the array of fixed focus cameras, and generate a three-dimensional model of a plurality of teeth based on the stitched plurality of images.

A system comprises a dental tray comprising an array of fixed focus cameras, wherein each fixed focus camera of the first array of fixed focus cameras has a fixed position and orientation relative to one or more other fixed focus camera of the array of fixed focus cameras. The system further comprises a processing device to receive a plurality of images generated by the array of fixed focus cameras, stitch the plurality of images together based on calibration data specifying predetermined image stitching parameters for combining the plurality of images, wherein the predetermined image stitching parameters are based on predetermined fixed relative positions and orientations of fixed focus cameras from the array of fixed focus cameras, and generate a three-dimensional model of a plurality of teeth based on the stitched plurality of images.