Torsional vibration resonance frequency measurement method for estimating stability of dental implant and novel amplitude transformer

a technology of torsional vibration resonance and measuring method, which is applied in the field of measuring method for assessing the stability of dental implants, can solve the problems of inability to continuously observe dental implants, inconvenient clinical research, and single measurement that does not possess practical clinical guiding significance, so as to improve the repeatability of the measurement result and improve the practicality.

Inactive Publication Date: 2018-03-08
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enhances the repeatability and clinical significance of dental implant stability assessments by more accurately reflecting the mechanical behavior of the bone-implant interface, allowing for more precise monitoring of bone healing and guiding timely repair decisions.

Problems solved by technology

That idea was seriously proposed by Meredith and Huang in the 1990s, after which, however, many basic and clinical studies proved that the dental implant resonance frequency analysis method they established cannot precisely and objectively reflect the bone healing progress of the dental implants and the interface bonding characteristic, which results in that the result of a single measurement does not possess practical clinical guiding significance.
The underlying cause of the above problem is that Meredith and Huang simply chose the bending vibration mode as the study object when studying the resonance frequency of the dental implants.
Dental implant push-out test and spin-out test are commonly used mechanic study approaches for dental implant osseointegration at present, and as they provide the maximum disruptive strength of the dental implant-bone interface, they are destructive test methods, cannot be used to continuously observe the dental implants over time, and, furthermore, they are not suitable for clinical research.
Dental implant percussion is a qualitative examining method for clinically deciding the stability of the dental implants and the presence of osseointegration, but it lacks an objective quantitative criteria.
However, the method has a poor repeatability, wherein the operation manner greatly affects the results, and investigation proves that the measured numerical values cannot precisely reflect the biomechanic nature of the bone-implant interface of dental implants.
Due to being influenced by too many factors, the current dental implant resonance frequency analysis method based on the bending vibration mode cannot objectively and precisely reflect the mechanical behavior of the dental implant-bone interface and the osseointegration level, which results in that the result of a single measurement does not possess practical clinical guiding significance; additionally, the connecting location and the arrangement orientation of the transducer largely affects the measurement result, resulting in the doubt on its clinical and scientific application values.
It can be seen that, the afore-said prior art measuring methods of the stability of dental implants still present many defects, and thus urgently need improvement.

Method used

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  • Torsional vibration resonance frequency measurement method for estimating stability of dental implant and novel amplitude transformer
  • Torsional vibration resonance frequency measurement method for estimating stability of dental implant and novel amplitude transformer
  • Torsional vibration resonance frequency measurement method for estimating stability of dental implant and novel amplitude transformer

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embodiment 1

[0040]In FIG. 4, it shows the preferred embodiment example of the present invention which is the torsional vibration resonance frequency measuring method for assessing the stability of dental implants and a novel amplitude transformer, mainly comprising the following steps:

[0041]Step 1: Installing a Novel Amplitude Transformer:

[0042]installing a novel amplitude transformer having a double-winged, horizontal, symmetrical and vertical structure for measuring resonance frequency onto a dental implant 3, by applying a central bolt 2 of the novel amplitude transformer to tightly fasten the novel amplitude transformer onto the surface of the dental implant 3, with a torque force of 3 to 10 N·cm to fasten the central bolt 2 of the novel amplitude transformer, so as to tighly fasten the two, thus forming a dental implant-amplitude transformer system, wherein the most preferred torque force of the central bolt for fastening the novel amplitude transformer is 4 to 6 N·cm. The torque force use...

embodiment 2

[0050]The torque force of the central bolt 2 for fastening the novel amplitude transformer is 5 N·cm. In the novel amplitude transformer system, the non-contact energizing method is applied to electromagneticly energize the unilateral side or bilateral sides of the bilateral horizontal wings 11, wherein when the electromagnetic signal is the energizing source, the frequency ranges from 0-20000 hertz. In the present embodiment, micro piezoelectric ceramic is used as the energizing source to synchronically apply to the bilateral horizontal wings 11 in the same rotation direction. Other steps are the same with those mentioned in embodiment 1.

embodiment 3

[0051]As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the novel amplitude transformer of the preferred embodiment in the present invention mainly includes an anti-rotary horizontal bilateral wing component 1 and a central bolt 2, wherein the anti-rotary horizontal double-winged component 1 is an integrated horizontal, symmetrical and upright structure with two wings composed by bilateral horizontal wing 11; a central standing pillar 12; and an anti-rotary part 13, wherein the bilateral horizontal wing 11 has two horizontal wings, which horizontally stretching outward individually from two sides of the top of the central standing pillar 12 along the direction parallel to the end surface of the neck of dental implant 3, symmetrical with the central axis of the central standing to pillar 12 and perpendicular to the upper end surface of implant neck as a vertical structure; wherein the central standing pillar 12 is provided with a through hole inside it, and the anti-rotary part 13 is a...

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Abstract

The present invention relates to a torsional vibration resonance frequency measuring method and a novel amplitude transformer for assessing the stability of dental implants. In one example, a torsional vibration resonance frequency measuring method includes installing an amplitude transformer on a dental implant, energizing a torsional vibration mode, gathering resonance signals, and analyzing a resonance frequency. In another example, an amplitude transformer for measuring torsional vibration resonance frequency in a dental implant, includes an anti-rotary horizontal double-winged component and a central bolt. The central bolt is configured to closely connect with the inner threads of the dental implant, such that the amplitude transformer can integrate with the dental implant sufficient to vibrate as an integral structure under energizing.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a measuring method for assessing the stability of dental implants in the art of stomatology, and in particular relates to a torsional vibration resonance frequency measuring method for assessing the stability of dental implants and a novel amplitude transformer.BACKGROUND ART[0002]In the 21st century, due to the improvement of technology and the richness and development of the implantation theory, dental implantation has become a mature clinic technology for partial anodontia repairing. It does not only achieve the recovery of the function of missing teeth, but also restores the aesthetic appearance of natural teeth. As one of the basic elements for a successful implanting, the osseointegration between the dental implants and the surrounding osseous tissue has been the focus and investigation hotspot for a long time. Only when a dental implant reaches an osseointegration with the surrounding alveolar bone can it function t...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A61B5/00A61B5/11A61C8/00A61C19/04
CPCA61B5/1111A61B5/0051A61C8/0089A61C19/04A61C1/186G01H13/00
InventorLI, DEHUATANG, YULONGLI, BING
OwnerFOURTH MILITARY MEDICAL UNIVERSITY