Abstract: A manual toothbrush with a handle and a toothbrush head mounted on the handle. A pivot bearing for pivoting the toothbrush head relative to the handle is arranged between the toothbrush head and the handle.

Abstract: A toothbrush head includes a base portion having a first surface and a pivot portion having a first cleaning element holder having a second surface, wherein the second surface is superjacent the first surface. The pivot portion also includes a second cleaning element holder and a third cleaning element holder which extend longitudinally from the first element holder. The head includes a pivot element for pivotally coupling the base portion and the pivot portion.

Abstract: A device for massaging the jaw or cleaning the teeth of a baby. The device has a handle and a plate-shaped bite part which is curbed in such a way that it essentially corresponds to the curbed shape of the jaw. The bite part has massage or cleaning projections on at least one broad side and is of a material which is softer than that of the handle. The handle and the bite part are interconnected in a nondetachable manner.

Abstract: A multi-function brush for an overdenture includes a brush handle having a head end and a tail end. The head end has a first surface and a second surface opposite to the first surface. The first group of brushes is provided on the first surface of the head end. The second group of brushes is provided on the second surface of the head end. The third group of brushes is provided on the tail end. With these three groups of brushes having different locations, specifications and indications, an overdenture user can clean the tissue surface and the denture surface of the overdenture, the male part of the dental attachments provided on the tissue surface, and the female part of the dental attachments provided on alveolar ridge or roots by this single brush. Thus, the present invention really has convenience and practicability, and the money for buying different toothbrush and denture brush is saved.

Abstract: A tooth cleaning apparatus adapted to clean a set of teeth of an animal. The apparatus includes a handle portion having a vibration inducer, a controller for the vibration inducer and a power source, wherein the handle is arranged to enclose the vibration inducer, the controller and the power source. The apparatus further includes a head portion having a brush segment including at least two brush heads, each of the at least two brush heads has a plurality of brushes adapted to simultaneously clean a quadrant of the set of teeth, a distal brush head of the at least two brush heads has a concave plurality of brushes and a proximal brush head of the at least two brush heads has a convex plurality of brushes.

Abstract: A dental cleaning device (10) comprising cleaning elements (12) arranged in a spaced relationship and angled generally towards one another such that a space (14) is defined there between. The cleaning elements (12) being movable to increase the space (14) to thereby enable the cleaning elements (12) to be located on either side of part of a tooth. Each cleaning element (12) acts to control the angle of the other cleaning element (12) relative to the tooth and gum, to ensure that the cleaning elements (12) engage the tooth and gum at an angle, so that the cleaning elements (12) can clean between the tooth and the gum.

Abstract: The invention is a U-shape disposable toothbrush head that will allow an individual to brush their teeth without arm movement. Said u-shape toothbrush head will fit comfortably in the mouth while cleaning and covering all of the top front and back teeth simultaneously. The u-shape disposable toothbrush will fit most existing electric toothbrushes.

Abstract: The mouthpiece includes a mouthpiece carrier member (14) having upper and lower sections which are adapted to receive the upper and lower teeth of a user. The mouthpiece carrier member has several embodiments which include side members and an intermediate member or members connecting the two side members to define the two sections. A bristle field (20) is mounted on the mouthpiece carrier member for contact with the surfaces of the teeth. The mouthpiece carrier member is moved in such a manner to produce a bristle action which has a significant axial component, resulting in the bristle tufts moving toward the teeth, contacting the teeth and moving away from the teeth, producing cleaning action on the teeth.

Abstract: The mouthpiece carrier assembly (12) is adapted and configured to receive the upper and lower teeth of the user. The mouthpiece carrier assembly is driven such that the bristles mounted on the teeth-facing surfaces of the mouthpiece assembly contact said surfaces and provide a cleaning effect therefor. A plurality of bristle sections (30, 32, 34, 41, 44) are secured to the teeth-facing portions of the mouthpiece assembly, wherein the bristle sections each have bristles which have a particular configuration and are otherwise adapted to provide effective cleaning for an associated dental region.

Abstract: A multi-tooth-surface brushing device for improving cleaning capacity by maximizing bristle contact with the lingual, the vestibular and the occlusal tooth surfaces simultaneously throughout the entire brushing process.

Abstract: The H Shape Toothbrush is for the daily use of cleaning teeth. Its toothbrush head is in H shape. Inside the H shape toothbrush head, brushes extend inward facing the top, front and back of teeth as well as gums on both top and bottom jaw. During tooth brushing, it cleans all surfaces of the teeth and cleans/massages gums at same time in every stroke, which makes it very efficient. It minimizes the hard to reach areas on the back of teeth for the ordinary toothbrush, which makes it more effective on tooth cleaning. Elastic materials are used to allow the toothbrush head deforming to fit with teeth of different sizes. 8 humps are designed inside the H shape toothbrush head to control the deformation. A toothbrush handle is designed that it can rotate with respect to the H shape toothbrush head for convenient use.

Abstract: The Mouthpiece Tooth Brush is made of pliable silicone or plastic with spinning bristles located in the top and bottom of the mouthpiece. This is run with a small lithium battery located in the top and bottom of the mouthpiece, inconspicuous to the human eye, and is rechargeable. The small spinning bristles are activated when you bit into the mouthpiece to brush the teeth. There is also an optional tongue and roof brush. This device is comes in different sizes to accommodate everyone. This is a hands free device that can be used by the elderly, someone with physical disabilities or for someone “on the go”. This will be great for hospitals and nursing homes.

Abstract: A toothbrush and method of brushing the teeth of a user. The toothbrush comprises a toothbrush handle having one or more toothbrush heads movable with respect to the handle. There are bristles provided on the toothbrush head or heads and those bristles can be along a single plane or may be along a plurality of planes. The flexibility and movability between the toothbrush handle and the toothbrush head allows the user to brush the teeth in a smooth, even pattern across the teeth, that is, the toothbrush handle can be used to manipulate the toothbrush head from the rear of one side of the teeth to the rear of the other side of the teeth without removing the toothbrush head from the mouth of the user. As such, users with difficulty carrying out complex manipulation of the toothbrush handle can still fully brush the teeth.

Abstract: An improved antimicrobial electric toothbrush and method includes a handle, a tip, and a plurality of bristle tufts and a drive mechanism. The bristle tufts may include four tufts of 10.5 mm length and another four tufts of 5.5 mm length. The tips of the bristle tufts may additionally be spaced apart and includes a cone shaped tip. The size and diameters of the bristle tufts may be combined with the reciprocating movement of the bristle tufts such that the bristle tips can reach into the crevices and tight spaces between the teeth and between the teeth and gums where no conventional toothbrush can reach. A second component of the apparatus may include an improved brush design with two counter rotating arrays of bristle tufts for use in polishing the teeth.

Abstract: An oral care implement includes a head platform having a plurality of faces with bristles extending therefrom. The oral care implement can have a pair of opposite bristled faces and the bristles can extend from the faces in opposite directions. The oral care implement can be formed by affixing a first AFT-tufted carrier plate to a first face of the head platform and affixing a second AFT-tufted carrier plate to the second face of the head platform. Optionally, the oral care implement can be formed by in-mold tufting bristles in the first face and affixing an AFT-tufted carrier plate to the second face of the head platform.

Abstract: A toothbrush comprises a handle portion and a head portion. The head portion has a base member and first and second lateral walls extending upwardly therefrom to define a space. The base member and first and second lateral walls have bristles arranged thereon extending into the space. At least one, and preferably both, of the first and second lateral walls are pivotable relative to the base member to permit the side walls to move into and out of the space in response to forces.

Abstract: A revolutionary three-dimensional brush, specifically designed to maximize performance and provide complete and comprehensive coverage to each surface of the user's teeth on the occlusal, buccal and lingual side. The maximum potential of this brush is accomplished by the three brushes, each covering a different area of the tooth surface in one stroke. The flexibility of the wing allows the brushes to expand and contract in accordance to the diameter and shape of the teeth. When cleaning the front teeth, the brushes will be more contracted, whereas when cleaning the molars, the brushes will be more expanded. Each brush, the lingual, buccal and occlusal contains bristles specifically arranged in evenly spaced rows to allow for a sweeping motion which provides a powerful cleaning to the cervical gingival and proximal gingival areas. This is in contrast to current brushes which contain bristles that are rigid and have no space causing them to pile up together lacking free movement.

Abstract: The mouthpiece includes a mouthpiece body (10) having portions (12, 14) configured to receive the user's upper and lower sets of teeth when it is inserted into the user's mouth. Mounted in the receiving portions are teeth-cleaning assemblies (16) which include bristles for cleaning of the teeth and a system for moving the bristles against the teeth to scrub and clean the teeth. Control elements (22) for the cleaning assemblies are actuated by a selected interior portion or element of the user's mouth, such as the tongue, cheek, lips or jaw.

Abstract: A toothbrush for brushing the bite surface and two sides of a tooth simultaneously including a handle and three brush head connected to the handle. The head assembly includes three brushes that are rotated about 3 parallel vertical axis while the assembly itself is rotatable about an angle of at least 180° so that a single brush cleans/polishes the inner surface of the teeth in the individual's mouth as the assembly is moved from one side of the individual's mouth to the other side.

Abstract: The U Shape Toothbrush is for the daily use of cleaning teeth. Its toothbrush head is in U shape. Inside the U shape toothbrush head, brushes extend inward from 3 directions facing the top, front and back of teeth. During tooth brushing, it cleans the top, front and back of teeth at same time in every stroke, which makes it very efficient. It also minimizes the hard to reach areas on the back of teeth for the ordinary toothbrush, which makes it more effective on cleaning the back of teeth. Part of the toothbrush head is made of elastic material to allow the toothbrush head deforming to fit with teeth of different sizes. 4 humps are designed inside the U shape toothbrush head to control the deformation. A toothbrush handle is designed that it can rotate with respect to the U shape toothbrush head for convenient use.

Abstract: An oral care implement implementing a cleaning element arrangement having diverging cleaning elements. In one aspect, the invention is an oral care implement comprising a handle and a head. A plurality of cleaning elements extend from the first surface of the head so as to form a ring about an axis extending from the first surface of the head. Each of the cleaning elements extend from the first surface of the head at an inclined orientation so as to radially diverge from the axis. In one embodiment, a cleaning element wall also extends from the first surface of the head and circumferentially surrounds the plurality of cleaning elements. In another aspect, the invention may be an apparatus for incorporation into an ansate oral care implement that utilizes the aforementioned arrangement of cleaning elements.

Abstract: A toothbrush has a body, and a brush member connected to the body, the brush member including three brushes which are arranged at an angle relative to one another so as to provide two side brushes and one intermediate brush extending between the side brushes and to form an elongated passage between the brushes, adapted to receive teeth so that the brushes can contact the teeth from an inner side, from an outer side, and from a biting surface.

Abstract: An elongated toothbrush head defining a longitudinal axis includes a first brush member having a first brush support surface and a second brush member which is a pivot arm mounted for pivotal movement on the first brush member. The pivot arm has a second brush support surface including a first portion and a second portion which are joined together and include free ends which are spaced apart. The first portion and the second portion of the second brush support surface are capable of pivoting relative to the first brush support surface about an axis which extends transversely to the longitudinal axis of the head and laterally across the pivot arm. One or more teeth cleaning elements project from the first portion and the second portion and are inclined at an angle to the second brush support surface.

Abstract: Toothbrush having a base, a pair of laterally spaced arms extending from the base on opposite sides of an axis, a semicylindrical brush head formed in two separate sections which are disposed side-by-side on one side of the axis and extend from respective ones of the arms, with each of the sections including an arcuately curved side wall having an arc length of approximately 90 degrees centered about the axis, and bristles extending radially from the side walls toward the axis for simultaneous engagement with the top/bottom and both sides of a tooth. In one disclosed embodiment, the toothbrush is used manually, and in another it is used in conjunction with a drive motor.

Abstract: A manual toothbrush with a handle and a toothbrush head mounted on the handle. A pivot bearing for pivoting the toothbrush head relative to the handle is arranged between the toothbrush head and the handle.

Abstract: A tooth brush includes body (18), neck (17), head (16), and bristles (15) at two opposite side of said head pointing opposite away from each other. Said head has plurality of through-all hole (12) for bristle insertion. The middle portion of said through-all hole has smaller diameter compare to entrance. Said head is tapered toward the end. Said bristles are trimmed such that they are tapered toward the end of said head.

Abstract: A toothbrush with a head having at least one pair of twisted wire brushes secured to the head's top surface in a position that creates a narrow and substantially uniform trench between the bristles of opposing brushes. Head construction may be solid, curved, blunt, tapering, or have a forked distal end. When a user's brace hardware and/or orthodontic wires are placed within the trench, bristles adjacent to it reach tooth surfaces behind the orthodontic wires to gently remove plaque without wire or hardware breakage. The twisted wires of opposing conical brushes are not parallel so as to create a uniform trench. The twisted wires in narrow end of conical brushes are also angled toward the distal end of the toothbrush head to facilitate reaching crowded back teeth without orthodontic wire breakage. The toothbrush handle can be laterally angled relative to its head and brushes are optionally replaceable by the user.

Abstract: Disclosed herein is a multi-directional toothbrush for protecting teeth. The multi-directional toothbrush includes a rotatable toothbrush part, a rotatable toothbrush part support frame, and a vertically moving toothbrush part. The rotatable toothbrush part is configured such that a cylindrical toothbrush part is provided on the outer surface of a cylindrical body. The rotatable toothbrush part support frame is configured such that the cam shafts of the rotatable toothbrush part are fitted into respective cam shaft holes. The vertically moving toothbrush part includes a vertically moving frame that is contained in the internal space of the rotatable toothbrush part support frame, and reciprocates up and down using a vertical moving means.

Abstract: The present invention discloses an interdental brush, the interdental brush of the present invention comprises a handle including a gripping portion, a brush coupling portion provided at a front end of the gripping portion and a bending portion provided on the gripping portion for allowing the brush coupling portion to be bent with respect to the gripping portion in the first direction and for restraining a bending of the brush coupling portion in the second direction which is opposite to the first direction; and a brush portion coupled to the brush coupling portion of the handle. Due to the above structure, the interdental brush of the present invention can clean conveniently and easily an interdental space between molar teeth as well as an interdental space between front teeth. In particular, the brush portion of the interdental brush can be inserted simply and accurately into an interdental space between molar teeth placed in a narrow space.

Abstract: A toothbrush (1) including a handle (15) and a brushing head (2) with two brushing compartments (3, 4). The upper brushing compartment (3) is engageable by the teeth of the upper jaw and the lower brushing compartment (4) is simultaneously engageable by the teeth of the lower jaw. The handle of the invention can be pivotably mounted (16, 18) on an outer wall (17) of the brushing head.

Abstract: A tooth brushing system adapted to simultaneously clean a set of maxilla teeth or a set of mandible teeth. The system comprises a vibration inducer, a controller for the vibration inducer, a power source and a handle adapted to enclose the vibration inducer, the controller for the vibration inducer and the power source. The system further comprises a plurality of brushes adapted to simultaneously contact the set of maxilla teeth or the set of mandible teeth, a vibration isolation plate integral with the handle and a vibration transfer plate connected to the vibration inducer and the plurality of brushes and releasably connected to the vibration isolation plate, wherein the handle is adapted to be effectively held within a hand of a user and the vibration isolation plate is adapted to isolate vibration from the set of maxilla teeth or the set of mandible teeth not contacted by the plurality of brushes.

Abstract: A device for massaging the jaw or cleaning the teeth of a baby. The device has a handle and a plate-shaped bite part which is curbed in such a way that it essentially corresponds to the curbed shape of the jaw. The bite part has massage or cleaning projections on at least one broad side and is of a material which is softer than that of the handle. The handle and the bite part are interconnected in a nondetachable manner.

Abstract: The invention discloses a cup apparatus that comprises a child's training cup that is modified to clean a child's baby teeth and gums with comfortable, cleaning elements are perpendicular to each other. To use the device and methods of this invention for cleaning the upper four front baby teeth, the child's lips surround the mouthpiece holes so that when he sips liquid from the cup apparatus, his four front teeth come in contact with the tooth cleaning members. The device is designed for children from about 6 months to about three years old. It removes plaque-like and decay-producing substances decay painlessly and effortlessly as well as reducing parental involvement in the child dental health.

Abstract: A toothbrush is provided having an elongated handle and a brush head supported by the handle. The brush head has a base and a plurality of bristles that are arranged in sections. Each section has bristles that extend from the base to form a contact surface elevated from the base. One or more of the sections include bristles that extend to varying lengths from the base to form a contact surface that inclines or declines relative to the base. The sections of bristles further include a first outside section having a contact surface that declines inwardly, an inside section, adjacent the first outside section, having a contact surface that declines outwardly toward the first outside section, and a second outside section positioned adjacent an opposite side of the inside section from the first outside section. The second outside section has a contact surface that declines inwardly toward the inside section.

Abstract: A brush section for use with an electric toothbrush includes a relatively large brush head portion having a generally rectangular shape, although oblong, elliptical and other such shapes having a length to width aspect ration greater than 1 may be employed. The brush head portion is secured to a shaft portion of the brush section that may be configured to couple to a handle section. The handle section may include an electric drive including drive shaft, and the drive shaft may couple to the brush head via a coupling member positioned within the shaft portion. The electric drive may impart a rotary, oscillating rotary-oscillating or other suitable drive motion to the drive shaft that is, in turn, imparted upon the brush head by virtue of the coupling member.

Abstract: A toothbrush includes a head having a bristle carrying surface formed from a thin resilient flexible dome shaped membrane. An air space is located between the base of the head and the membrane so that the membrane is capable of flexing to alter its original shape during use of the toothbrush and then recover to the original shape randomly during use. In a further practice of the invention the head and/or handle have elastomeric portions at least partially surrounding an open area. These portions are readily deflectable under pressure during use to improve handling of the toothbrush and orientation of the cleaning elements. Alternatively the toothbrush includes a longitudinal hinge collinear with the longitudinal axis of the toothbrush head so as to separate the head into a pair of side by side longitudinal sections, each of which has outwardly extending cleaning elements.

Abstract: A toothbrush has a plurality of replaceable cleaning heads configured to clean a plurality of teeth surfaces simultaneously. The cleaning heads may be configured to clean one row of teeth at a time or bottom and top teeth simultaneously. In a configuration for cleaning bottom and top teeth simultaneously, the cleaning heads for the top teeth are movably offset from the cleaning heads for the bottom teeth to accommodate occlusion. The toothbrush may be manual or electrical. Accessories such as a tongue and cheek scraper and tooth pick are available.

Abstract: A toothbrush head with a bristle support member on which a bristle zone with a plurality of bristle tufts is arranged. The bristle tufts include three differently inclined groups of bristle tufts of which a first group is arranged essentially perpendicular to the plane of the bristle support member, a second group is inclined in a direction transverse to the toothbrush head longitudinal axis towards a first side, and a third group is inclined in a direction transverse to the toothbrush head longitudinal axis towards an opposite second side, with the inclined bristle tufts of the second and third group being arranged in transverse rows on the bristle support member. In each transverse row of inclined bristle tufts, all the bristle tufts are inclined towards the same side, with the bristle inclined from the outside inwards.

Abstract: The invention relates to a toothbrush having a handle and a head part, on which bristle filaments and at least one flexible cleaning element are arranged. The at least one flexible cleaning element is arranged on a carrier element, which consists of a hard material, and is connected to the head part. The invention also relates to a process for producing such a toothbrush.

Abstract: A toothbrush head assembly for use with an electric toothbrush power handle includes a housing having a longitudinal direction, an oscillating member which oscillates reciprocally in the longitudinal direction, and a brush which oscillates rotatably about a longitudinally extending axis. The brush preferably includes twin brushes. Several mechanisms translate the reciprocal motion of the oscillating member into rotational motion of the brush.

Abstract: A brush for grooming, brushing, cleaning, fluffing, and combing the tail, limb, or paw of an animal. The grooming brush has a pair of opposing semi-circular brushes on a scissors-like hand operated device. The semicircular brushes are placed around the base of the tail, limb, or paw of an animal and closed together with the scissors-like device to form a circular brush around the tail, limb, or paw. The brush is then moved to the extremity of the tail, limb, or paw to fluff, brush, clean, groom, and comb the hair.

Abstract: A method and a device are described for manufacturing of a toothbrush from a starting-material which comprises a handle that runs into a neck part which divides into two equal and diverging arms/head parts, in which the bristle-carrying surface (bottom surfaces) of the head parts is approximately in a plane which runs parallel to the main axis of the toothbrush and head, and in which bristle which extend approximately vertically out from the surface is inserted and is of approximately equal of different lengths.

Abstract: The present invention relates to an electromotive toothbrush and more particularly, to an electromotive toothbrush, comprising upper and lower tooth covers surrounding and covering upper and lower teeth, respectively, and having bristles formed at a surface contacting the teeth; a first driving rod combined with a surface of the upper and lower tooth covers where there are no bristles; a second driving rod combined with a left side of a surface of the upper and lower tooth covers where there are bristles; a third driving rod combined with a left side of a surface of the upper and lower tooth covers where there are bristles; a plurality of sensors independently sensing positions of the first, second, and third driving rods; reciprocation means driving the first driving rod and the second and third driving rods in opposite directions to move the upper and lower tooth covers in opposite directions and thereby clean the teeth, the reciprocation means driven by power supplied from a motor, in response to position

Abstract: The present invention 10 discloses a plaque eradicating toothbrush series having a set of toothbrushes 12, 22, 28 with multiple functions and can be provided with interchangeable brush heads or in one piece. Both sides of the toothbrush comprise either brushes 12 or one side brush and the opposing side an inner mouth cleaner or tongue scraper 22, 28. The present invention 10 is comprised of plastic, rubber and synthetic bristles. The device 10 provides effective and efficient brushing, excellent oral hygiene resulting in fewer cavities, healthier gums and fresher breath. Some of the benefits of the present invention 10 are no wasted brush strokes, convenient angled design at 18 of handle 20, simultaneously cleans upper and lower teeth, removes plaque and bacteria and germs from the tongue and mouth walls and helps freshen breath.

Abstract: An oral hygiene device having, in one embodiment, a unique, peristaltic pump water streaming or jet action; and in another embodiment, a multi-headed toothbrush may also be disposed on the end of a handle on which the jet nozzle or nozzles are disposed.

Abstract: A brush and in particular a tooth brush comprises a brush body and a bristle carrier supporting a plurality of bristles and being preferably removably retained on the brush body. The bristle carrier, consisting of soft-elastic plastic material, is formed as a cap and can be drawn over a projection of the brush body.

Abstract: A toothbrush for use on domestic pets, comprising a toothbrush head with each end curved upward at roughly 30 degree angles, and four sets of soft bristles attached to the head. Three sets of bristles are attached to the front face of the brush head, with two sets positioned opposite each other on each upward curved end of the head and the third set of bristles positioned in the center in the middle region, perpendicular to the toothbrush head between the other two sets, thereby providing coverage of the mesial, distal and occlusal surfaces of the teeth simultaneously. The fourth set of bristles is attached to the back side of the toothbrush head, thereby propping open the jaw and softening the bite while cleaning and massaging the opposing teeth at the same time that the other three sets of bristles are doing the primary cleaning. The toothbrush handle is attached to the center of the head for ease of use and the ability to reach the back molars.

Abstract: An oral device is provided that includes a handle, a head, extending from the handle and having a pair of elongated arms that include opposed surfaces; and a pair of opposed cleaning elements, mounted on the opposed surfaces, the cleaning elements being constructed and positioned to be inserting into the interproximal regions of a user's mouth when the oral is moved back and forth over the user's teeth. Each of the cleaning elements are positioned at an acute angle with respect to an interproximal line defined through the interproximal region.

Abstract: The toothbrush consists of a brush head with bunches of bristles (2, 3, 4) arranged in a longitudinal bristle bed (1) and a handle (6), which is connected to the bristle bed (1) by a connecting part (5). The length of the bunches of bristles (3, 4) varies in the longitudinal direction of the bristle bed (1) in a wave shape. The first bunches of bristles (2) are situated at the two outer sides of the bristle bed (1), have split bristle ends and are of essentially the same length. The second bunches of bristles (3, 4), whose length varies in the longitudinal direction of the bristle bed (1), are situated between the two outer sides of the bristle bed (1). The inventive toothbrush has an improved cleaning action, especially for interdental spaces but also for the gingival line.

Abstract: A toothbrush has a head, and a handle; the head is formed with upper and lower portions joined to each other, which together have an inverted L shaped cross-section. The upper portion of the head is joined to the handle such that the head is rotary. The head has first and second bristles on a lower side of the upper portion, and an inner side of the lower portion respectively. Thus, the first and the second bristles can be pressed against, and moved over, top and one of lateral surfaces of a row of teeth for cleaning both of them respectively at the same time; the head turns to change orientation thereof relative to the handle according to curvature of different sections of a row of teeth, on which it is being moved along, thus increasing smoothness of movement thereof.