An erbium laser-activated irrigation-assisted positioning crown device and its manufacturing method

Abstract

The present invention discloses an erbium laser-activated irrigation-assisted positioning crown device and a manufacturing method thereof. The erbium laser-activated irrigation-assisted positioning crown device includes: a crown base for cooperating and connecting with a tooth and forming a complete seal with the tooth tissue; a laser interface provided at the top of the crown base and adapted to the structure of an erbium laser for connecting the erbium laser; an inlet connecting pipe provided at the side of the crown base for connecting an inlet pipe; and an outlet connecting pipe provided at the side of the crown base for connecting an outlet pipe. The present invention can prevent liquid splashing, liberate the hands of medical staff, and enhance the treatment effect of erbium laser-activated irrigation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an erbium laser activated washing auxiliary positioning crown device and a manufacturing method thereof. Background Art

[0002] Tooth pulp and periapical periodontitis are one of the most common diseases in dental clinics, and root canal therapy is the preferred treatment for them. Root canal therapy consists of two parts: mechanical preparation and chemical disinfection. Erbium laser activated irrigation is a chemical disinfection technology that has been proven to have a good infection control treatment effect. It mainly activates the erbium laser working tip in the pulp cavity, causing the irrigation fluid in the pulp cavity to flow to the apical area, thereby achieving the purpose of cleaning the entire root canal system.

[0003] At present, the erbium laser activated washing technology has the following problems in clinical use:

[0004] 1. Irritating liquid splashes. Since the wavelength of erbium laser is at the OH-absorption peak, the laser energy will be instantly absorbed by the water in the pulp cavity to produce steam bubbles. There is high pressure inside the steam bubble. If the laser energy is not controlled accurately, it will cause splashing of the pulp cavity flushing liquid during the expansion of the steam bubble. Since the flushing liquids commonly used in chemical preparation are irritating liquids (such as 5.25% sodium hypochlorite, etc.), the splashing liquid may cause damage to the patient's oral mucosa, the patient's face, and the doctor's facial skin.

[0005] 2. It requires four hands of medical care. During the erbium laser irrigation process, fresh irrigation fluid needs to be continuously injected into the medullary cavity, so at least two people are required to operate it at the same time. The doctor holds the erbium laser handpiece with one hand and uses the mouth mirror to observe the treatment situation in the medullary cavity with the other hand. The nurse injects fresh irrigation fluid with one hand and sucks out the waste irrigation fluid with the other hand. This process has certain requirements on the skills and tacit cooperation of medical staff, and will increase the consumption of medical human resources.

[0006] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0007] In response to the problems in the related art, the present invention proposes an erbium laser activated washing auxiliary positioning crown device and a manufacturing method thereof, which can prevent liquid splashing, free the hands of medical staff and enhance the therapeutic effect of erbium laser activated washing.

[0008] The technical solution of the present invention is achieved in this way:

[0009] According to one aspect of the present invention, an erbium laser activated washing auxiliary positioning crown device is provided.

[0010] The erbium laser activated rinsing assisted crown positioning device comprises:

[0011] A crown base, which is used to cooperate and connect with teeth and form a complete seal with the tooth tissue.

[0012] A laser interface, which is arranged at the top of the crown base and is adapted to the structure of an erbium laser for connecting the erbium laser.

[0013] An inlet connecting pipe, which is arranged on the side of the crown base for connecting an inlet pipe.

[0014] An outlet connecting pipe, which is arranged on the side of the crown base for connecting an outlet pipe.

[0015] Among them, the erbium laser-activated irrigation-assisted positioning crown device includes, according to the positions of the upper and lower posterior teeth: an upper left posterior tooth irrigation-assisted positioning crown device, an upper right irrigation-assisted positioning crown device, a lower left posterior tooth irrigation-assisted positioning crown device, and a lower right irrigation-assisted positioning crown device.

[0016] Among them, the upper left posterior tooth irrigation-assisted positioning crown device, the upper right irrigation-assisted positioning crown device, the lower left posterior tooth irrigation-assisted positioning crown device, and the lower right irrigation-assisted positioning crown device all include: a first premolar irrigation-assisted positioning crown device, a second premolar irrigation-assisted positioning crown device, a first molar irrigation-assisted positioning crown device, and a second molar irrigation-assisted positioning crown device.

[0017] Among them, the first premolar irrigation-assisted positioning crown device, the second premolar irrigation-assisted positioning crown device, the first molar irrigation-assisted positioning crown device, and the second molar irrigation-assisted positioning crown device all have two different sizes, large and small.

[0018] According to another aspect of the present invention, a manufacturing method of an erbium laser-activated irrigation-assisted positioning crown device is provided for manufacturing the above-mentioned erbium laser-activated irrigation-assisted positioning crown device.

[0019] The manufacturing method of the erbium laser-activated irrigation-assisted positioning crown device includes:

[0020] Pre-determine the marginal morphology of each posterior tooth, and according to the determined marginal morphology of each posterior tooth, print the crown base of each posterior tooth through a 3D printing device.

[0021] Measure the handle taper and laser tip length of the erbium laser, and according to the handle taper and laser tip length, print the laser interface through a 3D printing device and connect the printed laser interface to the crown base in an interference fit and seal.

[0022] Connect the pre-configured inlet connecting pipe and outlet connecting pipe to the crown base in an interference fit and seal.

[0023] Optionally, the materials of the crown base, the laser interface, the water inlet connecting pipe and the water outlet connecting pipe are all transparent resin.

[0024] Among them, pre-determining the marginal morphology of each posterior tooth includes: pre-configuring a number of adult tooth CT images, and determining the CT image of each posterior tooth according to the pre-configured adult tooth CT images; according to the CT image of each posterior tooth, extracting the marginal line of the dental tissue in the contact point plane, and plotting points on the marginal line to form a marginal morphology sample of each posterior tooth; performing an averaging process on the obtained number of marginal morphology samples to obtain the average marginal morphology sample of each posterior tooth, and using this average marginal morphology as the marginal morphology of each posterior tooth.

[0025] Optionally, when configuring a number of adult tooth CT images, the number of adults is 100

[0026] Among them, the manufacturing method of the erbium laser-activated irrigation-assisted positioning crown device further includes: measuring the average transverse diameter and the average longitudinal diameter of the long axis of each posterior tooth in the contact point plane; performing cluster analysis on the average transverse diameter and the average longitudinal diameter of the long axis of the obtained number of adult teeth, and classifying each posterior tooth into two types: large and small; configuring crown bases of corresponding sizes according to the classification of each posterior tooth into two types: large and small.

[0027] Among them, the manufacturing method of the erbium laser-activated irrigation-assisted positioning crown device further includes: when printing the crown base of each tooth through a 3D printing device according to the determined marginal morphology of each posterior tooth, reserving the mesiodistal structure of the tooth to make the crown base fit the adjacent teeth.

[0028] Beneficial effects:

[0029] The erbium laser-activated irrigation-assisted positioning crown device can seal the coronal space of the tooth, thus completely solving the clinical problem of splashing of irritating liquids; the erbium laser-activated irrigation-assisted positioning crown device can firmly fix the erbium laser handpiece on the coronal part of the treated tooth, so that the treatment can be completed without the operation of the medical staff's hand, reducing the consumption of clinical human resources; through the sealing of the coronal part of the tooth by the erbium laser-activated irrigation-assisted positioning crown device, the resistance of the liquid in the coronal part increases, and more liquid will move towards the apical region, thereby increasing the hydrodynamic force generated by irrigation in the apical region and enhancing the treatment effect. Description of the drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 is a front view structural schematic diagram of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0032] Figure 2 is a side view structural schematic diagram of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0033] Figure 3 is a top view structural schematic diagram of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0034] Figure 4 is a bottom view structural schematic diagram of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0035] Figure 5 is a top view structural schematic diagram of the first premolar irrigation-assisted positioning crown device of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0036] Figure 6 is a top view structural schematic diagram of the second premolar irrigation-assisted positioning crown device of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0037] Figure 7 is a top view structural schematic diagram of the first molar irrigation-assisted positioning crown device of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0038] Figure 8 is a top view structural schematic diagram of the second molar irrigation-assisted positioning crown device of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0039] Figure 9 is a schematic diagram of the preparation process of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention;

[0040] Figure 10 is a comparison schematic diagram of enhancing the hydrodynamic effect of erbium laser irrigation of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention.

[0041] In the figure:

[0042] 1. Crown base; 2. Laser interface; 3. Inlet connection pipe; 4. Outlet connection pipe; Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0044] According to an embodiment of the present invention, an erbium laser-activated irrigation-assisted positioning crown device and a manufacturing method thereof are provided.

[0045] As Figure 1-4 shown, the erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention includes:

[0046] A crown base 1 for mating and connecting with a tooth and forming a complete seal with the tooth tissue.

[0047] A laser interface 2 is provided on the top of the crown base 1 and is adapted to the structure of an erbium laser for connecting the erbium laser.

[0048] An inlet connection pipe 3 is provided on the side of the crown base 1 for connecting an inlet pipe.

[0049] An outlet connection pipe 4 is provided on the side of the crown base 1 for connecting an outlet pipe.

[0050] In specific applications, as Figure 5-8 shown, the present invention needs to be implemented for all posterior teeth in the oral cavity. Therefore, the erbium laser-activated irrigation-assisted positioning crown device includes, according to the positions of the upper and lower posterior teeth: an upper left posterior tooth irrigation-assisted positioning crown device, an upper right irrigation-assisted positioning crown device, a lower left posterior tooth irrigation-assisted positioning crown device, and a lower right irrigation-assisted positioning crown device. The upper left posterior tooth irrigation-assisted positioning crown device, the upper right irrigation-assisted positioning crown device, the lower left posterior tooth irrigation-assisted positioning crown device, and the lower right irrigation-assisted positioning crown device all include: a first premolar irrigation-assisted positioning crown device, a second premolar irrigation-assisted positioning crown device, a first molar irrigation-assisted positioning crown device, and a second molar irrigation-assisted positioning crown device. The first premolar irrigation-assisted positioning crown device, the second premolar irrigation-assisted positioning crown device, the first molar irrigation-assisted positioning crown device, and the second molar irrigation-assisted positioning crown device all have two different sizes, large and small.

[0051] That is to say, the erbium laser-activated irrigation-assisted positioning crown device described in the present invention is divided into 32 models (4 regions * 4 teeth / region * 2 models / tooth = 32 models), including four regions of upper, lower, left, and right. Each region contains four teeth, namely the first premolar, the second premolar, the first molar, and the second molar. Each tooth is divided into two models, large and small.

[0052] As Figure 9 shown, a manufacturing method of an erbium laser-activated irrigation-assisted positioning crown device according to an embodiment of the present invention is used to manufacture the above-mentioned erbium laser-activated irrigation-assisted positioning crown device. The manufacturing method of the erbium laser-activated irrigation-assisted positioning crown device includes:

[0053] Step S901, pre-determine the marginal morphology of each posterior tooth, and print the crown base of each posterior tooth through a 3D printing device according to the determined marginal morphology of each posterior tooth;

[0054] Step S903, measure the handle taper and laser tip length of the erbium laser, and print the laser interface through a 3D printing device according to the handle taper and laser tip length, and hermetically connect the printed laser interface to the crown base with interference fit;

[0055] Step S905, hermetically connect the pre-configured water inlet connecting pipe and water outlet connecting pipe to the crown base with interference fit.

[0056] In specific applications, the materials of the crown base, the laser interface, the water inlet connecting pipe, and the water outlet connecting pipe are all transparent resin. And pre-determining the marginal morphology of each posterior tooth includes: pre-configuring a number of CT images of adult teeth, and determining the CT image of each posterior tooth according to the pre-configured CT images of adult teeth; according to the CT image of each posterior tooth, extract the marginal line of the dental tissue in the contact point plane, and perform point plotting on the marginal line to form a marginal morphology sample of each posterior tooth; perform averaging processing on the obtained number of marginal morphology samples to obtain the average marginal morphology sample of each posterior tooth, and use this average marginal morphology as the marginal morphology of each posterior tooth. In addition, the average transverse diameter and average longitudinal diameter of the long axis of each posterior tooth in the contact point plane can also be measured; perform cluster analysis on the average transverse diameter and average longitudinal diameter of the long axis of the obtained number of adult teeth, and divide each posterior tooth into two types: large and small; configure the corresponding-sized crown base according to the two types of large and small of each posterior tooth. In addition, when printing the crown base of each tooth through a 3D printing device according to the determined marginal morphology of each posterior tooth, the mesiodistal structure of the tooth can be reserved to make the crown base fit with adjacent teeth.

[0057] In specific use, for the marginal morphology of each posterior tooth, the operation can be as follows:

[0058] First, perform image processing and analysis on the CT data of the dentitions of 100 Chinese adults, extract the upper, lower, left, and right four regions respectively, and the CT images of four teeth, namely the first premolar, the second premolar, the first molar, and the second molar, in each region, find the horizontal plane screenshot containing the mesiodistal contact points, and intercept the image.

[0059] The intercepted images are processed using the tpsUtil software to extract the edge lines of the dental tissues at the contact point plane. The tpsDIG2 software is used to plot points on the edge lines, and 20 points on the edge lines are extracted. After fixing the first 2 points, the coordinate values of the other 18 points are output through R software programming.

[0060] Through the CT data of 100 dentitions of Chinese adults, the edge morphology of each posterior tooth is obtained, and it is averaged to obtain the average edge morphology.

[0061] The Mimics 20.0 software is used to measure the average transverse diameter (X) and longitudinal diameter (Y) of the long axis of each posterior tooth at the contact point plane, and cluster analysis is performed on the X and Y values of 100 adults. After analysis, each tooth will be divided into two sizes, corresponding to different models of the auxiliary positioning crown device.

[0062] Since the positioning crown device needs to be placed on the complete dentition, which means there are adjacent teeth blocking in front of and behind the target tooth, it is necessary to reserve the mesiodistal structure of the crown base to ensure that the crown positioning device can be seated in actual situations.

[0063] During actual operation, the erbium laser-activated irrigation-assisted positioning crown device needs to be used under the condition of strict isolation of the dental tissues. First, the doctor will try on the auxiliary positioning crown device in the mouth, select the appropriate size model, then isolate the target tooth position, and then use glass ionomer cement to bond the crown device to the dental tissues to ensure the edge tightness.

[0064] Specifically, for the laser interface, the main function of the laser interface is to connect the auxiliary positioning crown device and the laser handpiece, and when the laser is activated, it maintains the relative static between the laser handpiece and the tooth, and at the same time can well seal the crown space so that the stimulating irrigation fluid does not leak outwards. Therefore, this structure needs to be specifically analyzed and designed according to the structure of the existing laser handpieces on the market. The process is as follows: First, physically measure the specific parameters of the erbium laser handpieces on the market; design a universal connection device through the taper under the handle, and design the height of the positioning crown device by estimating the length of the laser tip and the distance between the pulp chamber roof and floor; design a rubber plug with a 50-degree soft rubber so that its structure can perfectly match the auxiliary positioning crown device, and stably fix the laser handpiece through interference fit and achieve a sealing effect.

[0065] To facilitate understanding of the effects achieved by the above technical solutions of the present invention, the present invention uses specific examples to verify the above solutions of the present invention, as follows:

[0066] Using a high-speed camera with a frequency of 200,000 Hz, a hydrodynamic verification experiment was conducted on a three-dimensional tooth of a resin model, and the dynamic differences of steam bubbles were captured for the cases of not wearing the positioning crown device (control group) and wearing the positioning crown device (crown device group), respectively. Using the double-pulse mode, the differences between the crown device group and the control group can be better obtained. The following parameters were used for laser output in both groups: Fotona Lightwalk laser; H14 handpiece; PIPS89036 working tip; 15 Hz; 10 mJ; 300 μs pulse interval.

[0067] The results showed that, with the same first-pulse steam bubbles, it was significantly observed that the volume of the second-pulse bubbles in the crown device group was larger ( Figure 10 A), and at the same time, the pulse period was longer ( Figure 10 B). This indicates that when the first pulse entered the pulp chamber in the crown device group, a stronger fluid movement was generated, resulting in a lower hydrostatic pressure in the pulp chamber when the second pulse was injected. Therefore, larger steam bubbles were generated, and at the same time, the bubbles had a longer total period.

[0068] Thus, with the above technical solution of the present invention, the present invention can not only seal the space above the tooth crown, thus completely solving the clinical problem of splashing of irritating liquids; but also firmly fix the Er:YAG laser handpiece above the tooth crown to be treated, so that the treatment can be completed without the operation of the medical staff's hand, reducing the consumption of clinical human resources; at the same time, due to the sealing of the Er:YAG laser-activated irrigation-assisted positioning crown device above the tooth crown, the resistance of the liquid above the crown increases, and more liquid will move towards the apical region, thereby increasing the hydrodynamic force generated by irrigation in the apical region and enhancing the treatment effect.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An erbium laser-activated irrigation-assisted positioning crown device, characterized in that, Comprising: A crown base for mating connection with a tooth and forming a complete seal with the dental tissue; A laser interface disposed at the top of the crown base and adapted to the structure of an erbium laser for connecting the erbium laser; An inlet connecting pipe disposed at the side of the crown base for connecting to a water inlet pipe; An outlet connecting pipe disposed at the side of the crown base for connecting to a water outlet pipe; The erbium laser-activated irrigation auxiliary positioning crown device includes, according to the positions of the upper and lower posterior teeth: an upper left posterior tooth irrigation auxiliary positioning crown device, an upper right irrigation auxiliary positioning crown device, a lower left posterior tooth irrigation auxiliary positioning crown device, and a lower right irrigation auxiliary positioning crown device; The upper left posterior tooth irrigation auxiliary positioning crown device, the upper right irrigation auxiliary positioning crown device, the lower left posterior tooth irrigation auxiliary positioning crown device, and the lower right irrigation auxiliary positioning crown device all include: a first premolar irrigation auxiliary positioning crown device, a second premolar irrigation auxiliary positioning crown device, a first molar irrigation auxiliary positioning crown device, and a second molar irrigation auxiliary positioning crown device; The first premolar irrigation auxiliary positioning crown device, the second premolar irrigation auxiliary positioning crown device, the first molar irrigation auxiliary positioning crown device, and the second molar irrigation auxiliary positioning crown device all have two different sizes, large and small.

2. A method for manufacturing an erbium laser-activated irrigation-assisted positioning crown device for manufacturing the erbium laser-activated irrigation-assisted positioning crown device according to claim 1, characterized in that, Comprising: Pre-determine the marginal morphology of each posterior tooth, and according to the determined marginal morphology of each posterior tooth, print the crown base of each posterior tooth through a 3D printing device; Measure the handle taper and laser tip length of the erbium laser, and according to the handle taper and laser tip length, print the laser interface through a 3D printing device, and hermetically connect the printed laser interface to the crown base with interference; Hermetically connect the pre-configured inlet connecting pipe and outlet connecting pipe to the crown base with interference; Pre-determining the marginal morphology of each posterior tooth includes: Pre-configure a number of adult tooth CT images, and according to the pre-configured adult tooth CT images, determine the CT image of each posterior tooth; According to the CT image of each posterior tooth, extract the marginal line of the dental tissue in the contact point plane, and plot points on the marginal line to form a marginal morphology sample of each posterior tooth; Perform an averaging process on the obtained number of marginal morphology samples to obtain the average marginal morphology sample of each posterior tooth, and use this average marginal morphology as the marginal morphology of each posterior tooth; Measure the average transverse diameter and average longitudinal diameter of the long axis of each posterior tooth in the contact point plane; Perform a cluster analysis on the average transverse diameter and average longitudinal diameter of the long axis of the obtained number of adult teeth, and divide each posterior tooth into two types, large and small; According to each posterior tooth being divided into two types, large and small, configure the corresponding sized crown base.

3. The manufacturing method of an erbium laser-activated irrigation-assisted positioning crown device according to claim 2, characterized in that, The materials of the crown base, the laser interface, the inlet connecting pipe, and the outlet connecting pipe are all transparent resin.

4. The manufacturing method of an erbium laser-activated irrigation-assisted positioning crown device according to claim 3, characterized in that, When configuring a number of adult tooth CT images, the number of adults is 100.

5. The manufacturing method of an erbium laser-activated irrigation-assisted positioning crown device according to claim 4, characterized in that, Further comprising: When printing the crown base of each tooth through a 3D printing device according to the determined marginal morphology of each posterior tooth, reserve the mesiodistal structure of the tooth to make the crown base fit with adjacent teeth.

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