A dental crown extension bone removal drill

Abstract

A dental crown extension and bone removal ball drill, by arranging an annular boss portion on the upper part of a spherical drill needle, and forming different scale area height lines for judging the bone removal amount with the lower end face and the upper end face of the annular boss portion, can facilitate the surgical operation of periodontal clinicians and avoid accidental injury to tooth tissue, thereby better serving periodontal surgery patients.

Description

Technical Field

[0001] The present invention relates to a dental crown lengthening surgical instrument, in particular to a dental crown lengthening bone removal ball drill. By arranging an annular boss portion on the upper part of a spherical drill needle and forming different scale area height lines for judging the bone removal amount with the lower end surface and the upper end surface of the annular boss portion, the surgical operation of a periodontal clinician can be facilitated, accidental injury to tooth tissue can be avoided, and thus better services can be provided to periodontal surgery patients. Background Art

[0002] Crown lengthening is a conventional oral surgery, generally classified as periodontal surgery, aimed at improving the patient's aesthetics (gummy smile) or preparing for restorative treatment. At present, the instruments used for bone resection and bone plasty in crown lengthening surgery are relatively simple, generally only different types of ball drills (different types of ball drills refer to a series of ball drill rods with spherical drill needle heads of different sizes) are used to remove bones and trim them into physiological bone shapes. In surgery, it is generally necessary to assist with the use of a periodontal probe to check the amount of bone removal. Therefore, clinical surgeons need to frequently switch between the ball drill and the periodontal probe. The commonly used William scale periodontal probe is missing at 4mm (i.e., the scale is 1mm, 2mm, 3mm, 5mm, 7mm, 8mm, 9mm, 10mm), and the inventor, as a crown lengthening operator, believes that 4mm is a key point for judging whether the bone removal meets the standard. If it is estimated only by relying on the doctor's own clinical experience, it does not meet the requirements of modern surgery for accurate and fine operation. In addition, the most commonly used ball drill rod in surgery has a spherical drill needle head, which is a kind of sphere and can cut all hard tissues. If you are not careful when removing bones or trimming bone morphology, it is very easy to damage the tooth / root tissue. In some places where it is not easy to reach the line of sight (such as the distal surface of the tooth) or some unskilled operators, it is easy to accidentally injure the tooth root. Even for skilled operators, a thin layer of alveolar bone will be left near the root surface, and then the remaining alveolar bone will be manually scraped off and the root surface will be smoothed. Based on our own many years of clinical experience and problems encountered in clinical practice, the inventors realized that if a bone removal amount judgment scale is set on the ball drill neck, and an annular boss portion is set between the ball drill needle head and the ball drill neck, it will be beneficial to the surgical operation of periodontal clinicians, avoid accidental injury to tooth tissue, and thus better serve periodontal surgery patients. In view of this, the inventors have completed the present invention. Summary of the invention

[0003] In view of the defects or shortcomings in the prior art, the present invention provides a dental crown lengthening bone removal ball drill. By arranging an annular boss portion on the upper part of the spherical drill needle, and forming different scale area height lines for judging the bone removal amount with the lower end face and the upper end face of the annular boss portion, it can facilitate the surgical operation of periodontal clinicians and avoid accidental injury to dental tissue, thereby better serving periodontal surgery patients.

[0004] The technical solution of the present invention is as follows:

[0005] A dental crown extension bone removal ball drill, characterized in that it includes a ball drill rod, and the ball drill rod comprises a spherical drill needle, an annular boss portion and a ball drill neck from the bottom end upward in sequence, the boss lower end surface of the annular boss portion is a first scale area height line for judging the amount of bone removal, the boss upper end surface of the annular boss portion is a second scale area height line for judging the amount of bone removal, the annular boss portion has a smooth circumferential surface for bone removal protection, the boss lower end surface is a boss lower end surface annular edge surrounding the spherical drill needle, and the boss lower end surface annular edge is a boss lower end surface bone removal portion.

[0006] The top end of the ball drill rod is provided with a rod machine connection port.

[0007] The rod machine connection port is connected to a handheld dental drill, and the handheld dental drill is a high-speed turbine handpiece.

[0008] The outer periphery of the annular boss portion surrounds the outer periphery of the spherical drill needle, and the diameter difference between the two is 0.18mm to 0.3mm.

[0009] The height of the spherical drill needle is the height of the lower end surface of the boss of the annular boss portion, and the height of the lower end surface of the boss of the annular boss portion is 0.4-1.2 mm with the bottom end of the spherical drill needle as the starting point.

[0010] The height of the lower end surface of the annular boss portion is 0.5 mm or 1 mm.

[0011] The height of the upper end surface of the annular boss portion is 1.5 mm to 4.5 mm, starting from the bottom end of the spherical drill needle.

[0012] The height of the upper end surface of the annular boss portion is 2 mm or 4 mm.

[0013] The ball drill neck takes the upper end surface of the annular boss portion as a starting point, and scale areas are set at intervals of 1 mm, and the heights of all scale areas take the bottom end of the ball drill needle as a starting point.

[0014] The height of the highest scale area on the ball drill neck is not less than 4 mm, and different scale areas have different color markings.

[0015] The technical effects of the present invention are as follows: The present invention is a dental crown lengthening bone removal ball drill, which is a surgical instrument for crown lengthening bone removal made by the inventors based on their own many years of clinical experience and problems encountered in clinical practice. It is more conducive to the delicate operation of clinicians in terms of scale measurement, protection of the root surface and adjacent surface bone removal, and better serves patients. The invention point of the present invention lies in the annular boss portion, which is usually a first-level boss, and can also be set as a multi-level boss, and the outer peripheral surface of each level of the boss forms an independent scale area.

[0016] The features of the present invention are as follows: 1. The invention is designed with a protective device on the head of the instrument to avoid accidental injury to the tooth tissue, and adopts a vertical bone removal method to facilitate bone removal on the root surface. 2. The invention is designed with a distinct scale design on the neck of the instrument to guide clinical bone removal and better complete the operation. 3. Better clinical operation. According to different situations, bone removal ball drills with different neck length scales are designed, and different scale areas can be marked with different colors. The color markings are designed to provide guidance for the amount of bone removal for different gum thicknesses, thereby better serving the clinic. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural diagram of a first example of a dental crown lengthening and bone removal ball drill according to the present invention. Figure 1 The bottom dotted line in the figure is the height starting line or the reference line, and the right side is three scale lines, which respectively indicate the height line of the spherical drill needle 9 (this height is also the height of the lower end surface of the boss of the annular boss part 7, that is, the height of the first scale area is 1mm), the height line P2 of the upper end surface of the boss of the annular boss part 7 (also called the platform height or step height, that is, the height of the second scale area is 2mm), and the third scale area of ​​the ball drill neck 6, the height H3 of the third scale area is 3mm, and the height H4 of the fourth scale area of ​​the ball drill neck 6 is 4mm. Different scale areas can be marked with different colors, and the color markings are designed to provide guidance for the amount of bone removal for different gum thicknesses. The height of 4mm is the missing height of the existing periodontal probe.

[0018] Figure 2 yes Figure 1 Schematic diagram of the bottom structure of the ball drill ( Figure 1 Schematic diagram from above). Figure 2 The outer peripheral diameter of the middle annular boss portion 7 is 2.2 mm-the outer peripheral diameter of the spherical drill needle 9 is 2.0 mm=0.2 mm, that is, the width of the annular edge 8 of the lower end surface of the boss is 0.1 mm.

[0019] Figure 3 It is a schematic structural diagram of a second example of a dental crown lengthening and bone removal ball drill according to the present invention. Figure 3The height of the middle spherical drill bit is 0.5mm (height of the first scale area), the height line P2 of the upper end surface of the boss is 2mm (height of the second scale area), the height line H3 of the third scale area is 3mm, and the height line H4 of the fourth scale area is 4mm.

[0020] Figure 4 It is a schematic structural diagram of a third example of a dental crown lengthening and bone removal ball drill according to the present invention. Figure 4 The height of the middle spherical drill bit is 0.5mm (the height of the first scale area), the height line P3 of the upper end surface of the boss is 3mm (the height of the second scale area), and the height line H4 of the third scale area is 4mm.

[0021] Figure 5 It is a schematic structural diagram of a fourth example of a dental crown lengthening and bone removal ball drill according to the present invention. Figure 5 The height of the middle spherical drill bit is 0.5 mm (the height of the first scale zone), and the height line P4 of the upper end surface of the boss is 4 mm (the height of the second scale zone).

[0022] Figure 6 It is a schematic structural diagram of a fifth example of a dental crown lengthening and bone removal ball drill according to the present invention. Figure 6 The height of the middle spherical drill bit is 1mm (the height of the first scale area), the height line P3 of the upper end surface of the boss is 3mm (the height of the second scale area), and the height line H4 of the third scale area is 4mm.

[0023] Figure 7 It is a schematic structural diagram of a sixth example of a dental crown lengthening and bone removal ball drill according to the present invention. Figure 7 The height of the middle spherical drill bit is 1 mm (the height of the first scale zone), and the height line P4 of the upper end surface of the boss is 4 mm (the height of the second scale zone).

[0024] Figure 8 This is another schematic diagram of the bottom structure of the ball drill. Figure 8 The outer peripheral diameter of the middle annular boss portion 7 is 1.2 mm-the outer peripheral diameter of the spherical drill needle 9 is 1.0 mm=0.2 mm, that is, the width of the annular edge 8 of the lower end surface of the boss is 0.1 mm.

[0025] Fig. 9 It is a first working schematic diagram of the ball drill of the present invention combined with a handheld dental drill 1 (such as a high-speed turbine handpiece) in a dental crown lengthening and bone removal operation.

[0026] Fig.10 It is a second working schematic diagram of the ball drill of the present invention combined with a handheld dental drill 1 (such as a high-speed turbine handpiece) in a dental crown lengthening and bone removal operation.

[0027] The reference numerals are listed as follows: 1-handheld dental drill (such as a high-speed turbine handpiece); 2-crown; 3-gingiva; 4-root surface; 5-ball drill rod; 6-ball drill neck (a new bone removal amount judgment scale area can be added above the upper end surface of the boss); 7-annular boss part (with a bone removal part on the lower end surface of the boss, but the surrounding surface is smooth, used for bone removal protection to avoid accidental injury to the tooth root 12, and improve the accuracy and precision of the operation on the root surface 4); 8-annular edge or vertical bone removal part of the lower end surface of the boss (or called the bone removal part of the lower end surface of the boss); 9-spherical drill needle; 10-rod machine connection port; 11-alveolar bone; 12-root; P2-boss upper end surface height line with a height of 2mm; P3-boss upper end surface height line with a height of 3mm; P4-boss upper end surface height line with a height of 4mm; H3-scaled area height line with a height of 3mm; H4-scaled area height line with a height of 4mm. DETAILED DESCRIPTION

[0028] Below is the attached figure ( Figure 1-Figure 10 ) to illustrate the present invention.

[0029] refer to Figures 1 to 10As shown, a dental crown extension bone removal ball drill comprises a ball drill rod 5, wherein the ball drill rod 5 is composed of a spherical drill needle 9, an annular boss portion 7 and a ball drill neck 6 from the bottom to the top, the boss lower end face of the annular boss portion 7 is a first scale area height line (e.g., 0.5 mm, 1 mm, etc.) for judging the amount of bone removal, the boss upper end face of the annular boss portion 7 is a second scale area height line (e.g., 2 mm boss upper end face height line P2, 3 mm boss upper end face height line P3, 4 mm boss upper end face height line P4, etc.) for judging the amount of bone removal, the annular boss portion 7 has a smooth peripheral surface for bone removal protection, the boss lower end face is a boss lower end face annular edge 8 surrounding the spherical drill needle 9, and the boss lower end face annular edge 8 is a boss lower end face bone removal part. The top end of the ball drill rod 5 has a rod machine connection port 10. The rod machine connection port 10 is connected to a handheld dental drill, and the handheld dental drill is a high-speed turbine handpiece. The outer periphery of the annular boss portion 7 surrounds the outer periphery of the spherical drill needle 9, and the diameter difference between the two is 0.18mm to 0.3mm. The height of the spherical drill needle 9 is the height of the lower end surface of the boss of the annular boss portion 7, and the height of the lower end surface of the boss of the annular boss portion 7 is 0.4 to 1.2mm with the bottom end of the spherical drill needle 9 as the starting point. The height of the lower end surface of the boss of the annular boss portion 7 is 0.5mm or 1mm. The height of the upper end surface of the boss of the annular boss portion 7 is 1.5mm to 4.5mm with the bottom end of the spherical drill needle 9 as the starting point. The height of the upper end surface of the boss of the annular boss portion 7 is 2mm, 3mm or 4mm. The ball drill neck 6 takes the upper end surface of the boss of the annular boss portion 7 as the starting point, and sets scale areas at intervals of 1 mm. The heights of all scale areas (e.g., the scale area height line H3 with a height of 3 mm, the scale area height line H4 with a height of 4 mm, etc.) all take the bottom end of the ball drill needle 9 as the starting point. The height of the highest scale area of ​​the ball drill neck 6 is not less than 4 mm, and different scale areas have different color markings. The color markings are designed to provide guidance for the amount of bone removal for different gum thicknesses.

[0030] like Figures 1 to 8The ball drill product series shown is a group of surgical bone removal instruments for crown lengthening that are more suitable for clinical operations. It is convenient for clinicians to observe the amount of bone removal while removing bones, and to select instruments with different scales according to different clinical situations. The neck of the bone removal instrument is designed with scales, and has boss marks at the commonly used distances of 2mm, 3mm and 4mm from the working tip. The operator can observe the scales while removing bones, accurately judge the amount of bone removal, and reduce the surgical operation time increased by constantly changing instruments during the operation. The improvement of the head of the bone removal ball drill of the present invention is that the spherical drill needle head is widened by 0.5mm to the scale line (or the working tip of the head is narrowed by 0.5mm), and it is changed to a wheel-shaped bone removal (smooth all around, and only vertical bone removal), and the edge can also have a protected ring-shaped head. This greatly reduces the possibility of accidental injury to the tooth root during surgical operations and improves the accuracy and precision of the operation.

[0031] The design of the annular boss portion of the present invention makes the dental crown extension bone removal ball drill of the present invention particularly suitable as a bone removal instrument for the adjacent surfaces of posterior teeth. The head of the instrument has a protruding design of 0.5-2mm, and only the same direction of the head has a cutting function, which is used for fine bone removal and avoids damaging the adjacent surface tissue. When the bone removal part of the lower end face of the boss of the annular boss portion is used for bone removal on the adjacent surface of the posterior teeth, this structure is more conducive to protecting the adjacent tissue in a position that is not easily accessible by sight, solving the difficulty in bone removal surgery.

[0032] The neck of the instrument has different scale designs at different depths, so that the required amount of bone removal can be achieved in one step according to different needs, which can better guide the operation of the clinician. For example, for simple extension of the clinical crown, the thick gingival biotype has a boss at 3mm, and the thin gingival biotype has a boss at 2mm, etc. For situations where the broken end needs to be exposed: the boss mark is at a distance of 3mm and 4mm from the working tip, which is convenient for the clinician to choose according to the morphology of the tooth broken end, bone and root bifurcation and other anatomical morphologies. The inventive point of the present invention lies in the annular boss portion, which is usually a first-level boss, and can also be set as a multi-level boss, and the outer peripheral surface of each level of the boss forms an independent scale area. Different scale areas have different color markings, and the color markings are designed to provide guidance for the amount of bone removal for different gum thicknesses.

[0033] It is pointed out here that the above description is helpful for those skilled in the art to understand the invention, but it does not limit the protection scope of the invention. Any equivalent replacement, modification and / or simplification of the above description that does not deviate from the essence of the invention shall fall within the protection scope of the invention.

Claims

1. A dental crown lengthening and bone removal drill, characterized in that: The invention comprises a ball drill rod, wherein the ball drill rod comprises a spherical drill needle, an annular boss portion and a ball drill neck from the bottom end upwards, the boss lower end surface of the annular boss portion is a height line of a first scale area for judging the amount of bone removal, the boss upper end surface of the annular boss portion is a height line of a second scale area for judging the amount of bone removal, the annular boss portion has a smooth peripheral surface for bone removal protection, the boss lower end surface is an annular edge of the boss lower end surface surrounding the spherical drill needle, and the boss lower end surface annular edge is a bone removal portion of the boss lower end surface; The outer periphery of the annular boss portion surrounds the outer periphery of the spherical drill needle, and the diameter difference between the two is 0.18mm to 0.3mm; The height of the spherical drill needle is the height of the lower end surface of the boss of the annular boss portion, and the height of the lower end surface of the boss of the annular boss portion is 0.4-1.2 mm with the bottom end of the spherical drill needle as the starting point.

2. The dental crown lengthening and bone removal drill according to claim 1, characterized in that: The top end of the ball drill rod is provided with a rod machine connection port.

3. The dental crown lengthening and bone removal drill according to claim 2, characterized in that: The rod machine connection port is connected to a handheld dental drill, and the handheld dental drill is a high-speed turbine handpiece.

4. The dental crown lengthening and bone removal drill according to claim 1, characterized in that: The height of the lower end surface of the annular boss portion is 0.5 mm or 1 mm.

5. The dental crown lengthening and bone removal drill according to claim 1, characterized in that: The height of the upper end surface of the annular boss portion is 1.5 mm to 4.5 mm, starting from the bottom end of the spherical drill needle.

6. The dental crown lengthening and bone removal drill according to claim 1, characterized in that: The height of the upper end surface of the annular boss portion is 2 mm or 4 mm.

7. The dental crown lengthening and bone removal ball drill according to claim 1, characterized in that: The ball drill neck takes the upper end surface of the annular boss portion as a starting point, and scale areas are set at intervals of 1 mm, and the heights of all scale areas take the bottom end of the ball drill needle as a starting point.

8. The dental crown lengthening and bone removal drill according to claim 7, characterized in that: The height of the highest scale area on the ball drill neck is not less than 4 mm, and different scale areas have different color markings.

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