Patent ID: 12226270

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

FIGS.1-2illustrate a three-point locating dental implant locating guide provided by the present invention, which is composed of a first plate11and a second plate21that are pivotally connected.

The first plate11has a first plate body12. The first plate body12has a first groove13extending along the longitudinal axis of the first plate body12. A first slide member14is slidably connected to the first plate body12. The first slide member14has a first through hole15corresponding in position to the first groove13. The first through hole15and the first groove13mutually constitute a first locating hole16. One end of the first plate body12is defined as a first end portion121. The first end portion121has a first perforation17. In this embodiment, the first slide member14has a first opening141extending in a direction perpendicular to the first through hole15, so that the first slide member14can be sleeved on the first plate body12through the first opening141. A first pin122is insertedly connected to the other end (i.e., the end opposite to the first end portion121) of the first plate body12, so as to prevent the first slide member14from disengaging from the first plate body12.

The second plate21has a second plate body22. The second plate body22has a second groove23extending along the longitudinal axis of the second plate body22. A second slide member24is slidably connected to the second plate body22. The second slide member24has a second through hole25corresponding in position to the second groove23. The second through hole25and the second groove23mutually constitute a second locating hole26. One end of the second plate body22is defined as a second end portion221. The second end portion221has a second perforation27. The first end portion121of the first plate11is pivotally connected to the second end portion221of the second plate21so that the first perforation17and the second perforation27are overlapped. In this embodiment, the second slide member24has a second opening241extending in a direction perpendicular to the second through hole25, so that the second slide member24can be sleeved on the second plate body22through the second opening241. A second pin222′ is insertedly connected to the other end (i.e., the end opposite to the second end portion221) of the second plate body22, so as to prevent the second slide member24from disengaging from the second plate body22. Furthermore, a curved section222is defined between the second plate body22and the second end portion221. The middle portion of the second end portion221of the second plate body22is formed with a lateral slot29. The slot29extends in a direction perpendicular to the second perforation27, so that the second end portion221is formed with two spaced side walls2211that are arranged in parallel and have the second perforation27. The first end portion121of the first plate11is inserted into the slot29between the two side walls2211, so that the first perforation17and the second perforation27are overlapped. A hollow annular pivot member31is axially inserted in the first perforation17and the second perforation27, such that the first plate11and the second plate21are pivotally connected, and the pivot member31encloses a third locating hole28in the first perforation17and the second perforation27. Through the design of the curved section222, the first end portion121of the first plate11is pivotally connected to the second end portion221of the second plate21to form a “U” shape, like the curve of the oral gum, so that the first end portion121of the first plate11and the second end portion221of the second plate21pivot in parallel relative to each other with the pivot member31as the axis. The extending directions of the first locating hole16, the second locating hole26and the third locating hole28are arranged parallel to each other. Thereby, the three-point locating dental implant locating guide provided by the present invention can be achieved.

Preferably, the first slide member14and the second slide member24can be respectively sleeved on the first plate11and the second plate21in a close fit, or locked on the first plate11and the second plate21by bolts (not shown in the figure) to limit their slide and adjustment positions. As shown inFIG.3, a distance scale32may be engraved or printed on the first plate body12and the second plate body22respectively, so that the dentist can accurately adjust and determine the positions of the first slide member14and the second slide member24after being moved. An angle scale33arranged around the circumference of the second perforation27is engraved or printed on the end face of the second end portion221, so that the dentist can accurately adjust and determine the relative pivot angle between the first plate11and the second plate21.

In practical applications, as shown inFIG.4, the first plate11and the second plate21may be stored in a storage box50. The storage box50is configured to store the first slide members14, the second slide members24and the pivot members31with different aperture specifications, and locating pins40with different outer diameter specifications, thereby forming a dental implant locating guide kit.

In addition, referring toFIG.5as shown in steps510,512,514, and516, the present invention further provides a three-point locating modeling method using the aforementioned three-point locating dental implant locating guide, comprising the steps:

(a) Obtaining oral image data of a patient. The oral image data may be obtained by taking X-rays or CT (computed tomography) scans. As shown inFIG.6and represented by step510inFIG.5, the oral image data can be used to determine a first locating point position C1, a second locating point position C2and a third locating point position C3in the patient's oral cavity. The oral image data includes information of the shape of the dental arch, missing teeth and alveolar bone.

(b) The third locating hole28of the dental implant locating guide is aligned with the first locating point position C1in the patient's oral cavity (as shown inFIG.7and represented by step512inFIG.5). Next, after drilling the patient's alveolar bone in the first locating point position C1via the third locating hole28, a first locating pin41is implanted in the first locating point position C1of the patient's alveolar bone.

(c) As shown inFIG.8and represented by step514inFIG.5, by sliding the first slide member14and the second slide member24and adjusting the pivot angle between the first plate11and the second plate21, the first locating hole16and the second locating hole26are aligned with the second locating point position C2and the third locating point position C3in the patient's oral cavity, respectively. Next, after drilling the patient's alveolar bone in the second locating point position C2via the first locating hole16as well as in the third locating point position C3via the second locating hole26, a second locating pin42and a third locating pin43are implanted in the second locating point position C2and the third locating point position C3of the patient's alveolar bone. The first locating pin41, the second locating pin42and the third locating pin43constitute a three-point locating base. The first locating pin41, the second locating pin42and the third locating pin43may be directly composed of an artificial implant.

(d) Finally, as shown inFIG.9and represented by step516inFIG.5, a dental mold (not shown in the figure) is produced by using the three-point locating base constituted by the first locating pin41, the second locating pin42and the third locating pin43as a modeling base. After obtaining the occlusal record, the corresponding surgical guide device and its dentures can be produced accurately. Taking a patient with more missing teeth or no teeth as an example, using the locating modeling method provided by the present invention, three locating pins or artificial implants are first implanted in the oral cavity, and then the dental mold is produced based on the three-point locating base. Based on the dental mold and its occlusal record, the surgical guide device required for subsequent dental implant surgery and dentures can be directly and accurately produced, so as to ensure their accuracy.

The three-point locating dental implant locating guide and its locating modeling method provided by the present invention have the following advantages:

1. In the three-point locating dental implant locating guide provided by the present invention, the hollow pivot member31is used as the reference position of the first locating point. Then, by sliding the first slide member14and the second slide member24and adjusting the pivot angle between the first plate11and the second plate21, the reference position of the three-point locating can be accurately located. Because the first slide member14and the second slide member24can slide to adjust their positions, and the first plate11and the second plate21can be pivoted relative to each other, the dental implant locating guide can be flexibly adjusted to meet different clinical needs.

2. In the three-point locating dental implant locating guide provided by the present invention, the first locating hole16, the second locating hole26and the third locating hole28are formed by overlapping, respectively. Thus, the volume of the dental implant locating guide can be reduced effectively. The dental implant locating guide can be placed in the patient's oral cavity with case, and has the advantage of convenient operation.

3. In the three-point locating dental implant locating guide provided by the present invention, the extending directions of the first locating hole16, the second locating hole26and the third locating hole28are arranged parallel to each other, so as to ensure the parallelism of the subsequent drilling directions.

4. The three-point locating modeling method adopted in the present invention uses three-point locating dental implant locating guide to implant three locating pins or to directly implant artificial implants in the patient's alveolar bone. Therefore, an extremely stable locating base can be provided, so as to effectively reduce the error of the dental mold produced subsequently.

5. The three-point locating modeling method adopted in the present invention uses the three-point locating base as the modeling base to produce the dental mold. Based on the dental mold and its occlusal record, the surgical guide device required for subsequent dental implant surgery and dentures can be directly and accurately produced. This can reduce the time required for subsequent dental implants greatly, and can avoid unnecessary medical disputes effectively.