RU2803060C1 - Positioner for intraoral digital dental radiography - Google Patents

Abstract

FIELD: dentistry; medical technology.

SUBSTANCE: invention can be used in dental radiography. The positioner for intraoral digital radiography of teeth contains a positioning axis with a digital sensor holder of the radiovisiograph and a handle. The positioner additionally contains a guide plane and is a collapsible structure, made with the ability to change the configuration. The holder of the digital sensor is made detachable, in the form of a fixed stop rigidly fixed to the axis and an elastic movable counter-support made with the ability to move along the axis. The guide plane is designed to indicate a perpendicular angle relative to the plane of the digital sensor and consists of a ring with a cross-shaped hole and a plane shaped like a pointer. The handle is removable and is made with the possibility of rigid fixation to the axis in four different positions, while in the upper part of the handle there is a cross-shaped hole for the positioning axis, and the main part of the handle, designed to be held by hand, consists of two parallel planes with a gap between them, designed to accommodate the digital sensor wire during intraoral dental radiography. The positioning axis is made of hard X-ray transparent plastic in the form of a faceted rod, while the working part of the axis ends with a fixed stop of the digital sensor holder, opposite the stop, a movable counter stop of the digital sensor holder and a guide plane are put on the axis, and the free end of the positioning axis is inserted into the cross-shaped hole in the upper part handles, while the angle between the axis and the handle is 120°.

EFFECT: simplification of the intraoral radiography of the teeth, reducing the time of its implementation and improving the quality of the resulting x-rays.

1 cl, 3 dwg

Description

The invention relates to the field of dentistry, namely medical technology, and can be used in dental radiography.

At a modern dental appointment, high-tech equipment is used and complex medical procedures are performed that do not allow the patient’s position to change during the treatment process. In this regard, there is a need to conduct x-ray diagnostics of teeth directly in the dental office. For this, a radiovisiograph is used - a digital sensor and a specialized X-ray generator designed for intraoral dental radiography. A digital sensor is placed in the oral cavity according to the area of interest, the generator is brought to the patient’s face, installed at a given distance opposite the tooth being examined, and intraoral radiography is performed. After this, the image of the object under study appears on the computer monitor screen. There are two options for holding a digital sensor in the oral cavity during intraoral dental radiography - using an intraoral positioner, and a manual method - when the digital sensor is held by the patient himself with his own hand (finger), which is undesirable in modern conditions, or by a radiologist (x-ray laboratory assistant) , conducting radiography, which should be considered unacceptable.

The positioner is a device for apodactylic fixation of a digital sensor in the oral cavity during intraoral dental radiography and can be used as a guiding device for performing orthogonal, or as it is commonly called, parallel technique of intraoral dental radiography. Positioners are manufactured by various companies, come in different designs and are offered in sets of several pieces. Each positioner is designed for use in a specific quadrant of the dentition for a specific group of teeth, which requires the presence of at least three positioners (or more) in a set. The design of positioners is designed to operate only in parallel technology, which is not applicable in practice in every case. During operation, the positioner is changed, depending on the area being examined. Most positioners have a guide plane and fixation elements to the generator tube, which eliminates the possibility of arbitrary positioning of the digital sensor and holding it by hand in a situationally required position. At the same time, the design of the vast majority of positioners is designed to work only with digital sensors of a certain size and configuration, that is, they are tied to a specific manufacturer (“Parallel technique for intraoral dental digital radiography” http://www.medicus.ru/stomatology/specialist/parallelnaya- tehnika-provedeniya-vnutrirotovoi-dentalnoi-cifrovoi -rentgenografii-24780.phtml).

A known positioner for a digital radiovisiograph sensor, Troll Byte Kimera Starter, consists of a guide handle with a hole for the sensor cord, a sensor holder in the form of a plate with flexible clamps on the sides, located at the end of the handle at a right angle, and a stop for the X-ray tube, located at right angles to handle and parallel to the holder plate. The end of the X-ray tube support is perfectly aligned with the center of the holder (DentalLeague Positioners Manual. Sunimedicalimaginginc.http://www.dentalleague.ru/manual_trollbyte.pdf.).

However, it is used only for one type of digital sensor, does not imply the possibility of manual positioning and can only be used in parallel technology.

As a prototype, we selected a digital radiovisiograph sensor positioner 5000 Toothbrush Type Holder, which includes a guide metal axis with an elastic radiovisiograph sensor holder equipped with grooves for holding the sensor and a handle (http://www2.carestreamdental.co.uk/pwuk/orc/shopping/ordpart .asp?opid=6069548BC98B42E99CB79FAF308EB615&ges=0).

The use of positioners for intraoral dental radiography is dictated by the conditions of modern dental practice, but in practice these devices are not always used. Specialists conducting intraoral radiography of teeth justify the use of the manual method of holding a digital sensor by the fact that the designs of positioners are not convenient enough; it is necessary to use several positioners of different designs for intraoral radiography of different groups of teeth; with them it is impossible to take pictures in some eccentric (oblique) projections, when application takes too much time, and the quality results do not always meet expectations. In this regard, there is a need to improve the design of modern positioners.

The technical result of the invention is to simplify intraoral dental radiography, reduce the time it takes and improve the quality of the resulting X-ray images.

The essence of the invention is that a positioner is proposed for intraoral digital radiography of teeth, which is a collapsible structure, made with the ability to change the configuration, containing a positioning axis with a detachable holder for a digital radiovisiograph sensor, made in the form of a fixed stop rigidly attached to the axis and an elastic movable counter support, having the ability to move along an axis; a handle guiding a plane to indicate a perpendicular angle relative to the plane of the digital sensor, consisting of a ring with a cross-shaped hole and a pointer-shaped plane;

the handle is removable and is made with the possibility of rigid fixation to the axis in four different positions, while in the upper part of the handle there is a cross-shaped hole for the positioning axis, and the main part of the handle intended to be held by hand consists of two parallel planes with a gap between them intended for placement of a digital sensor wire during intraoral dental radiography;

The positioning axis is made of rigid radiolucent plastic in the form of a faceted rod, while the working part of the axis ends with a fixed stop of the digital sensor holder; opposite the stop, a movable counter support of the digital sensor holder and a guide plane are put on the axis, and the free end of the positioning axis is inserted into a cross-shaped hole in the upper part handles, while the angle between the axis and the handle is 120°.

This design allows the operator to perform intraoral dental radiography using the parallel and isometric apodactile method in any clinical situation during any type of dental treatment and surgical intervention in the oral cavity. The digital sensor can be fixed either by an x-ray technician performing intraoral dental x-rays or by the patient independently. The absence of metal parts in the design eliminates the effect of reflection and redirection of the X-ray beam. The design of the digital sensor holder is detachable and movable, allowing the positioner to be used with a digital sensor of any configuration, any size, regardless of the manufacturer. The removable handle allows you to change the position of the digital sensor relative to the axis and conduct intraoral radiography of various groups of teeth using one positioner. Fixing the handle at an obtuse angle ensures ease of use with the rubber dam insulating system. The positioner is a dismountable device consisting of four parts, which allows for easy antiseptic treatment.

The essence of the invention is illustrated by drawings and photographs, where in FIG. 1, 2, 3 shows a general view of the positioner in working condition.

The proposed positioner has a positioning axis 1, made of hard plastic in the form of a faceted T-shaped rod in cross section with a holder 2 (Fig. 1). The holder 2 of the digital sensor consists of two parts - a fixed support 3 in the form of a groove for holding the digital sensor, rigidly fixed to the axis 1 at a right angle with a groove directed towards the axis 1, and a movable removable counter support 4 (Fig. 1, 2), made of elastic material, such as silicone. The counter support 4 has the possibility of reciprocating movement along axis 1. The movable counter support 4 is made in the form of a bracket-shaped attachment with horizontally located semicircular “legs” 5, having upper 6 and lower 7 vertical protrusions. The upper protrusion 6, which prevents the digital sensor from tipping over during intraoral dental radiography, has the shape of a truncated conical spike, the lower protrusion 7 has a semicircular shape with a cross-shaped hole in the middle for putting on axis 1.

The positioner additionally contains a movable guide plane 9 (Fig. 1, 2), strung on axis 1, to indicate a perpendicular angle relative to the plane of the digital sensor, consisting of a ring with a cross-shaped hole and a pointer-shaped plane directed at 90 degrees to the plane fixed in the working position of the digital sensor.

The handle 10 (Fig. 1, 2) consists of two parallel planes with a gap between them, designed to accommodate the digital sensor wire during intraoral dental radiography, and a cross-shaped hole for the positioning axis 1.

Before starting work, the positioner is assembled in accordance with the required configuration and fixed in the position required for operation. A movable counter support 4, directed by the “legs” 5 towards the stop 3, and a guide plane 9 are placed on axis 1 in succession. The free end of the rod of axis 1 is inserted into the cross-shaped hole of the handle. This position of the parts ensures the operating condition of the positioner. The digital sensor of the radiovisiograph in the desired position is inserted between the stop 3 and the counter support 4 of the holder 2 and by displacing the counter support 4 the digital sensor is pressed against the stop 3, ensuring its fixed position. During intraoral radiography, the digital sensor cord is placed in the gap of the handle 10 (Fig. 1, 3). The part of the positioning axis 1 with the digital sensor holder that is not fixed in the handle is covered with an insulating system and used for intraoral radiography of teeth. The positioning axis allows you to hold and position the digital sensor in the mouth, the guide plane shows the perpendicular direction to the plane of the digital sensor located in the mouth, the handle allows you to manipulate the guide axis without touching the patient.

In the assembled state, the angle between axis 1 and handle 10 is 120°, which is most convenient for holding the positioner during operation.

The design of the positioner allows you to change the position of the digital sensor relative to the handle in five options. The digital sensor can be fixed in a vertical or horizontal position relative to the axis. In this case, the handle can be facing in the same direction as the digital sensor, in the opposite direction, or located at an angle of 90 degrees. The presented working configurations allow intraoral radiography of teeth in the upper and lower jaws. With this configuration, it is possible to carry out an alternative auxiliary option for radiography of any groups of teeth in complex clinical cases.

The proposed positioner is designed for intraoral dental radiography at an outpatient dental appointment. The use of a positioner involves apodactylic fixation of the image receiver - a digital sensor - in the patient's oral cavity during intraoral dental radiography in accordance with the selected technique and area of study. The design of the positioner implies the ability to hold the positioner both by the specialist performing intraoral dental radiography and by the patient himself, as well as performing intraoral dental radiography using two standard techniques - isometric and parallel (orthogonal).

The design features of the positioner allow:

• use the device to work with all types of radiovisiographs, regardless of the size and configuration of the digital sensor;

• conduct X-ray examination of any group of teeth in any quadrant of the oral cavity using only one device configuration;

• use both parallel (orthogonal) method of intraoral dental radiography and isometric, as well as conduct studies in oblique projections with different angles of inclination of the x-ray beam;

• the absence of metal parts in the design eliminates the appearance of image artifacts due to reflection and redirection of the X-ray beam;

• rigid fixation of the digital sensor in the clamp allows, if necessary, controlled displacement of soft tissues and isolating systems in the oral cavity when installing the digital sensor;

• the guide plane shows an orthogonal direction to the plane of the digital sensor, which eliminates the need to fix the positioner to the generator tube during parallel shooting;

• in case of an excessively pronounced gag reflex, the positioner allows you to hold the digital sensor suspended without touching the oral mucosa or use it for extraoral dental radiography;

• the positioner is a dismountable device consisting of four parts, which makes it easy to carry out antiseptic treatment and replace parts in case of breakdown.

All of the above advantages provide simplification of intraoral dental radiography, reduction of the time of its implementation and improvement of the quality of the obtained X-ray images during the examination.

Claims (5)

A positioner for intraoral digital dental radiography, containing a positioning axis with a holder for a digital radiovisiograph sensor and a handle, characterized in that it additionally contains a guide plane and is a collapsible structure, made with the ability to change the configuration; and the holder of the digital sensor is made detachable, in the form of a fixed stop rigidly fixed to the axis and an elastic movable counter-stop, made with the ability to move along the axis; the guide plane is intended to indicate a perpendicular angle relative to the plane of the digital sensor and consists of a ring with a cross-shaped hole and a plane shaped like a pointer; the handle is removable and is designed to be rigidly fixed to the axis in four different positions, while in the upper part of the handle there is a cross-shaped hole for the positioning axis, and the main part of the handle, intended to be held by hand, consists of two parallel planes with a gap between them intended for placement of a digital sensor wire during intraoral dental radiography; The positioning axis is made of rigid radiolucent plastic in the form of a faceted rod, while the working part of the axis ends with a fixed stop of the digital sensor holder; opposite the stop, a movable counter support of the digital sensor holder and a guide plane are put on the axis, and the free end of the positioning axis is inserted into a cross-shaped hole in the upper part handles, while the angle between the axis and the handle is 120°.