CN109431630A - A method of improving dentine adhesive strength - Google Patents
A method of improving dentine adhesive strength Download PDFInfo
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- CN109431630A CN109431630A CN201811284529.5A CN201811284529A CN109431630A CN 109431630 A CN109431630 A CN 109431630A CN 201811284529 A CN201811284529 A CN 201811284529A CN 109431630 A CN109431630 A CN 109431630A
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- China
- Prior art keywords
- adhesive strength
- dentine
- test
- bonding
- facing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/20—Repairing attrition damage, e.g. facets
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a kind of methods for improving dentine adhesive strength, comprising the following steps: after tooth preparation, with etching agent acid etching dentin surface 15 seconds, flowing water was washed down, dried, using helium gas plasma jet stream spary facing 5 seconds；Design parameter, which is provided that, is adjusted to 20V, electric current 0.6A, helium gas flow 3L/min for high voltage power supply input voltage；Facing is soaked with wet dustless paper handkerchief, coating adhesive, heap moulds resin after solidification 10 seconds.The parameter that the present invention is generated with the acceptable temperature range control low temperature normal atmosphere plasma of tooth body, makes bonding interface contact low temperature normal atmosphere plasma jet stream, and continues the sufficient time to achieve the effect that improve adhesive strength.
Description
Technical field
The present invention relates to oral cavity adhesive technology fields, and in particular to a method of improve dentine adhesive strength.
Background technique
Due to being free of cell in enamel and dentine, once occur to be drawn by diseases such as dental caries, abrasion, development abnormalities of teeth
The dental hard tissue's defect risen, then can not self-healing；By oral cavity adhesive technology, aesthetic orthopaedics and micro- can be met at the same time
On the basis of wound is repaired, joint resin restores the form and function of defected tooth tissue, and adhesive technology is in modern dental treatment
It is with a very important position.But due to the particularity of Dentin Structure, ingredient, how to obtain effective dentine bonding becomes
The difficult point and hot spot in oral cavity bonding field.Compared with enamel, 70% inorganic matter, 18% organic matter (main body are contained in dentine
For collagen), 10% water, 1.5% other organic matters, the presence of organic matter and moisture be influence its adhesive strength it is unfavorable because
Element.Dentine includes interweave webbed collagen and dentinal tubule, the spy of this ingredient and structure in structure simultaneously
Different property makes weak link of the dentine bonding interface as resin bonding reparation.Current clinically most common dentin bonding agent
For total etching bonding agent, the smear layer of dentin surface after tooth preparation is removed with the phosphoric acid of 32%-37%, while can make tooth sheet
The demineralization of matter surface, the exposure netted structure of collagenous fibres, the infiltration conducive to bonding agent to collagenous fibres form bonding mixed layer.But
Be studies have shown that phosphoric acid etching agent in total etching adhesive system to the wetting capacity of the demineralization ability of dentine and bonding agent not
Matching often forms " imperfect tape " that an adhering resin not exclusively permeates and collagenous fibres are exposed in mixed layer bottom, makes
The closing of dentine bonding interface and stability are destroyed, and adhesive strength can significantly reduce after 3~5 years, are eventually led to
The failure of vertex-gluing graph.In China, existing 60%~70% resin bonding dummy is needed replacing.With China's economic development,
People are higher and higher to health, beautiful tooth preservative restoration technical need, and rapid growth is presented in the application of resin bonding reparation
Trend, and China has been unable to meet the requirement of clinical rapid growth in the basic research of vertex-gluing graph technical field.Therefore, such as
What improves the validity of dentine bonding, it has also become the problem in science of oral cavity adhesive technology urgent need to resolve.
The strategy for improving dentine total etching bonding interface bond quality at present still has certain deficiency, 1. by extending light
Bonding agent extent of polymerization can be promoted according to the time, but light application time is unable to indefinite extension, if it exceeds the time of manufacturer's prompt,
Oxygen suppression layer (oxygen inhibited layer, OIL) that will lead to adhesive surface is thinning, reduces adhesive strength instead, together
Shi Yanchang light application time will increase fuel factor, if can cause dental pulp inflammatory reaction and be difficult to estimate；2. the addition energy of hydrophobic coating
The water imbibition for reducing hydrophilic monomer in bonding agent, reduces the formation of fault of construction, keeps the polymerization of bonding agent more abundant, but dredges
Water coating may will increase the risk that bonding interface mutually separates, and reduce the long-time stability of one dentine combination interface of resin；③
Ethyl alcohol wet bonding can keep interfacial wettability, reduce dentin collagen fibre diameter, and fibre gap increases, and be conducive to bonding agent
The infiltration of resin monomer, but effect is restricted when ethyl alcohol combined use hydrophilic adhesive, because ethyl alcohol can not completely remove,
Bonding agent water imbibition enhances after will lead to polymerization, the final stability for influencing bonding interface；4. being pressed down using matrix metalloproteinase
Preparation can inhibit the exposed collagenous fibres of the protease attack, weaken the hydrolysis to collagenous fibres, thus stable adhesion circle
Face.Using crosslinking agent, collagen cross-linking degree can be increased, toughening collagenous fibres stablize collagenous fiber network, to improve collagen stroma
Anti- degradation capability.But the toxicity and coloration of inhibitor and crosslinking agent are not possible to solve；5. bionical remineralization method, can be de-
In mine dentin collagen fiber and interfibrous gap forms mineral deposits, wraps up exposed collagen by minerals again
Covering to protect collagenous fibres, improve dentine adhesive effect, but needs to impregnate bonding interface in remineralization liquid, into
Entering clinical application also needs further to convert.Therefore, it is most important to explore novel interface modification method.
Summary of the invention
It is an object of the present invention to provide a kind of cleanings, safe and simple, low raising dentine --- the total etching of technique sensitive
The problem of method of bonding interface adhesive strength, it can be efficiently solved in the presence of background technique.
In the presence of solving the problems, such as background technique, comprising the following steps:
1, for fresh in vitro tooth test specimen in the case where cutting machine flowing water at a slow speed is cooling, excision occlusal surface exposure dentine uses waterproof abrasive paper
It polishes, prepares standard smear layer, be cleaned by ultrasonic 5min；
2, dentin surface with 37% phosphoric acid gel acid etching 15s, flowing water rinse 30s, dipped in wet dustless paper handkerchief dry
Moisture opens helium gas cylinder, and pressure is adjusted to 0.5MPa, and flow control is in 3L/min；
3, high voltage power supply input voltage is adjusted to 20V by open plasma generating device, and electric current is adjusted to 0.6A, with etc.
Gas ions jet stream spary facing 5s；
4, facing is soaked with wet dustless paper handkerchief, is coated with total etching bonding agent, heap moulds resin 10mm after solidifying 10s；
5, it is cooling lower long along tooth in flowing water with cutting machine at a slow speed after all test specimens are stood for 24 hours in 37 DEG C of deionized waters
Axis is cut perpendicular to bonding interface piece, prepares the test examination of 0.8mm × 0.8mm × 8.0mm size strip micro-stretching adhesive strength
Part；
6, bonding test specimen is fixed on testboard with 502 glue, with omnipotent test machine with 1mmmin-1Loading velocity into
Row test, until test specimen is broken, load when record bonding interface is broken converts micro-stretching intensity (MPa).
Due to using above technical scheme, the invention has the following advantages: with the acceptable temperature model of tooth body
The parameter that low temperature normal atmosphere plasma processed generates is contained, so that bonding interface is contacted low temperature normal atmosphere plasma jet stream, and persistently fill
The time divided is to achieve the effect that improve adhesive strength.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below will
In conjunction in the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described.
Embodiment 1
A method of improving dentine adhesive strength:
1, fresh in vitro tooth test specimen is in the case where cutting machine flowing water at a slow speed is cooling, excision occlusal surface exposure dentine, successively with
600,800, No. 1000 waterproof abrasive papers are polished, and prepare standard smear layer, are cleaned by ultrasonic 5min；
2, control group uses standard mull technique, and bonding interface is without any processing；
3,37% phosphoric acid gel acid etching 15s of experimental group dentin surface, flowing water rinses 30s, with wet dust-free paper
Towel dips in solid carbon dioxide point, opens helium gas cylinder, and pressure is adjusted to 0.5MPa, and flow control is in 3L/min；
4, high voltage power supply input voltage is adjusted to 20V by open plasma generating device, and electric current is adjusted to 0.6A, with etc.
Gas ions jet stream spary facing 5s；
5, facing is soaked with wet dustless paper handkerchief, is coated with total etching bonding agent, heap moulds resin 10mm after solidifying 10s；
6, it is cooling lower long along tooth in flowing water with cutting machine at a slow speed after all test specimens are stood for 24 hours in 37 DEG C of deionized waters
Axis is cut perpendicular to bonding interface piece, prepares the test examination of 0.8mm × 0.8mm × 8.0mm size strip micro-stretching adhesive strength
Part；
7, bonding test specimen is fixed on testboard with 502 glue, with omnipotent test machine with 1mmmin-1Loading velocity into
Row test, until test specimen is broken, load when record bonding interface is broken converts micro-stretching intensity (MPa), and experimental group is averaged
Micro-stretching intensity is 53.18MPa, is significantly higher than control group 41.80MPa.
The present embodiment applies low temperature plasma generating device (CTP-2000K, the limited public affairs of Nanjing Su Man plasma science and technology
Department).
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (1)
1. a kind of method for improving dentine adhesive strength, it is characterised in that comprising the following steps:
(1) in the case where cutting machine flowing water at a slow speed is cooling, excision occlusal surface exposure dentine is carried out fresh in vitro tooth test specimen with waterproof abrasive paper
Polishing prepares standard smear layer, is cleaned by ultrasonic 5min；
(2) dentin surface with 37% phosphoric acid gel acid etching 15s, flowing water rinse 30s, dip in solid carbon dioxide with wet dustless paper handkerchief
Point, helium gas cylinder is opened, pressure is adjusted to 0.5MPa, and flow control is in 3L/min；
(3) high voltage power supply input voltage is adjusted to 20V by open plasma generating device, and electric current is adjusted to 0.6A, uses plasma
Body jet stream spary facing 5s；
(4) facing is soaked with wet dustless paper handkerchief, is coated with total etching bonding agent, heap moulds resin 10mm after solidifying 10s；
(5) after all test specimens are stood for 24 hours in 37 DEG C of deionized waters, with cutting machine at a slow speed in flowing water it is cooling lower along tooth long axis,
It is cut perpendicular to bonding interface piece, prepares 0.8mm × 0.8mm × 8.0mm size strip micro-stretching adhesive strength test test specimen；
(6) bonding test specimen is fixed on testboard with 502 glue, with omnipotent test machine with 1mmmin-1Loading velocity carry out
Test, until test specimen is broken, load when record bonding interface is broken converts micro-stretching intensity (MPa).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284529.5A CN109431630A (en) | 2018-10-20 | 2018-10-20 | A method of improving dentine adhesive strength |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811284529.5A CN109431630A (en) | 2018-10-20 | 2018-10-20 | A method of improving dentine adhesive strength |
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| CN109431630A true CN109431630A (en) | 2019-03-08 |
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| CN201811284529.5A Pending CN109431630A (en) | 2018-10-20 | 2018-10-20 | A method of improving dentine adhesive strength |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111888022A (en) * | 2020-08-11 | 2020-11-06 | 长沙博谱科学仪器有限公司 | One-step forming manufacturing method of false tooth |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100273129A1 (en) * | 2009-04-23 | 2010-10-28 | Curators of the University of Missouri Office of Intellectual Property Admin. | Atmospheric Non-Thermal Gas Plasma Method for Dental Surface Treatment |
| CN106102624A (en) * | 2014-01-23 | 2016-11-09 | 兰德股份公司 | Athermal plasma |
| KR20170119432A (en) * | 2016-04-19 | 2017-10-27 | 서울대학교치과병원 | Method for coating of dentin surface using pulsed plasma |
-
2018
- 2018-10-20 CN CN201811284529.5A patent/CN109431630A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100273129A1 (en) * | 2009-04-23 | 2010-10-28 | Curators of the University of Missouri Office of Intellectual Property Admin. | Atmospheric Non-Thermal Gas Plasma Method for Dental Surface Treatment |
| CN106102624A (en) * | 2014-01-23 | 2016-11-09 | 兰德股份公司 | Athermal plasma |
| KR20170119432A (en) * | 2016-04-19 | 2017-10-27 | 서울대학교치과병원 | Method for coating of dentin surface using pulsed plasma |
Non-Patent Citations (2)
| Title |
|---|
| 李洪婷等: "等离子体处理对口腔修复材料粘接性能的影响", 《国际口腔医学杂志》 * |
| 韩金俊等: "非热常压脉冲等离子体对树脂复合材料对牙质的粘合性和耐久性的影响", 《欧洲口腔科学杂志》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111888022A (en) * | 2020-08-11 | 2020-11-06 | 长沙博谱科学仪器有限公司 | One-step forming manufacturing method of false tooth |
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Application publication date: 20190308 |
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