WO2012171535A1 - Pre-sintered zirconia surface treatment technique for dental appliances - Google Patents

Pre-sintered zirconia surface treatment technique for dental appliances Download PDF

Info

Publication number
WO2012171535A1
WO2012171535A1 PCT/EG2011/000014 EG2011000014W WO2012171535A1 WO 2012171535 A1 WO2012171535 A1 WO 2012171535A1 EG 2011000014 W EG2011000014 W EG 2011000014W WO 2012171535 A1 WO2012171535 A1 WO 2012171535A1
Authority
WO
WIPO (PCT)
Prior art keywords
zirconia
gel
application
sintered
coats
Prior art date
Application number
PCT/EG2011/000014
Other languages
French (fr)
Inventor
Rasha Mohamed ABD-EL RAOUF
Ahmed Nour El-Din HABIB
Original Assignee
Abd-El Raouf Rasha Mohamed
Habib Ahmed Nour El-Din
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abd-El Raouf Rasha Mohamed, Habib Ahmed Nour El-Din filed Critical Abd-El Raouf Rasha Mohamed
Priority to PCT/EG2011/000014 priority Critical patent/WO2012171535A1/en
Publication of WO2012171535A1 publication Critical patent/WO2012171535A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/849—Preparations for artificial teeth, for filling teeth or for capping teeth comprising inorganic cements
    • A61K6/864—Phosphate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5035—Silica
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5042—Zirconium oxides or zirconates; Hafnium oxides or hafnates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5048—Phosphates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C04B41/5338—Etching
    • C04B41/5353—Wet etching, e.g. with etchants dissolved in organic solvents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/87—Ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/91—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00836—Uses not provided for elsewhere in C04B2111/00 for medical or dental applications

Definitions

  • the present invention relates generally to the surface treatment of ceramic dental appliances such as crowns, bridges, posts and implants.
  • the invention herein is related more particularly to modify the surface of pre-sintered partially stabilized zirconia, after being shaped into such appliances and before sintering, to improve its bond strength to different surfaces.
  • Coating the implant surface with a bioactive material enhanced the bone integration process; unfortunately zirconia is difficult to be coated.
  • Tribochemical silica coating technique air abraded the ceramic surface with alumina particles that have been coated with silica.
  • Silicoating involved pyrolytically applying a silica coating on a substrate.
  • ⁇ Vapor-phase deposition technique in which a chloro-silane gas (SiCU) was combined with water vapor to form a SkOy functionalized surface on a Zr0 2 substrate.
  • ⁇ Plasma spray technique was used to deposit a siloxane coating on Zr0 2 .
  • Patent Application SE0302539-2 Nobel Biocare AB, Goteborg,
  • pre-sintered zirconia penetrating coats e.g. nano-silica or nano-calcium phosphate coatings.
  • pre-sintered zirconia etching technique has not been previously performed. Disclosure of Invention:
  • the present invention is a process of modifying zirconia surface in its pre-sintered stage either by penetrating coats or etching.
  • This innovated technique relies on gel application on the pre-sintered zirconia surface. Depending on the applied material, after sintering, the result is highly adhered coat or roughened zirconia surface (fig. l , lb, lc).
  • Pre-sinfered zirconia penetrating coat technique relies on that part of the coating material enters in the zirconia pores in its pre-sintered stage. During sintering, zirconia contracts and entraps the coating material between its grains (fig. l , lb, 3).
  • the previous technique includes the following steps:
  • the coating material either silica or calcium phosphate based, are transformed into gel by their mixing with a gel forming agent which had been previously mixed with distillate water,
  • the pre-sintered coated zirconia is sintered in special furnace for zirconia sintering according to the manufacture instructions.
  • Pre-sintered zirconia etching technique depends on acidic gel application, which could etch the pre-sintered zirconia.
  • the used acidic gel could be from the commercially available etching gels or prepared by mixing the acid with gel forming agent.
  • the prior technique could be performed by either of two strategies:
  • Acidic gel e.g. commercially available 5-9% HF dental ceramic etching gel
  • Tap water washing for 3 minutes
  • ultrasonically cleaned for extra 3 minutes, followed by sintering (fig. l , lc, 4).
  • Acidic gel covering pre-sintered zirconia persists on its surface when the latter is entered the sintering furnace (fig.l , lc, 5).
  • Pre-sintered zirconia disc shaped specimen was prepared from commercially available yttrium partially stabilized zirconia ceramic blocks (VITA In-Ceram 2000 YZ Cubes).
  • the pre-sintered zirconia disc was coated with nanosilica gel.
  • the nanosilica gel was prepared by mixing nanosilica with gel forming agent which had been previously mixed with distillate water. The ratio of (coating material: gel forming agent: distillate water) could be varied to give different coat thickness.
  • Pre-sintered zirconia disc shaped specimen was prepared from commercially available yttrium partially stabilized zirconia ceramic blocks (Amanngirrbach, ceramill zi). The pre- sintered zirconia disc was etched with 9% HFgel (Ultradent Porcelain etch) for 3 minutes, then washed by tape water for 3 minutes and ultrasonically cleaned for extra 3 minutes, followed by sintering.
  • 9% HFgel Ultrasonically cleaned for extra 3 minutes
  • Pre-sintered zirconia disc shaped specimen was prepared from commercially available yttrium partially stabilized zirconia ceramic blocks (Amanngirrbach, ceramill zi). Acidic gel (9% HF gel Porcelain etch, Ultradent) covering pre-sintered zirconia persists on its surface when the latter is entered the sintering furnace
  • Figure 1 shows symbolically gel application using a brush on the pre- sintered zirconia surface.
  • Figure la represents symbolically untreated fully sintered zirconia.
  • Figure lb represents symbolically coated fully sintered zirconia
  • Figure lc represents symbolically etched fully sintered zirconia
  • Figure 3 SEM photo showing the penetration of the coat with the fully sintered zirconia grains.
  • Figure 4 SEM photo showing roughened fully sintered zirconia surface due to acid application and removal before sintering.
  • Figure 5 SEM photo showing the roughened fully sintered zirconia surface caused by acid persistence on pre-sintered zirconia when entered the sintering furnace.
  • the applied material is applied in the gel form.
  • Roughened surface could increase the surface area for bonding with the different surfaces; veneer, cement or bone.

Abstract

Modifying zirconia surface in its pre-sintered stage is an easy and effective technique to improve bonding of zirconia based dental appliances to different surfaces. This surface treatment could be either additive or subtractive. Additive surface treatment relies on pre-sintered zirconia coating by materials as nano-silica or nano-calcium phosphate. During sintering, zirconia contracts and entraps part of the coating material between its grains. While subtractive surface treatment depends on pre-sintered zirconia etching by acidic gel either washed before sintering qr not. Thus, depending on the applied material before sintering, the result is highly adhered coat or roughened zirconia surface after sintering.

Description

Pre-sintered Zirconia Surface Treatment Technique
For Dental Appliances
Technical Field:
The present invention relates generally to the surface treatment of ceramic dental appliances such as crowns, bridges, posts and implants. The invention herein is related more particularly to modify the surface of pre-sintered partially stabilized zirconia, after being shaped into such appliances and before sintering, to improve its bond strength to different surfaces.
Background Art:
In the dental field, developments over the last ten years in ceramic materials science have led to a class of high strength materials such as zirconia based ceramics. Utilizing zirconia in the dental field opens the design and application limits of all-ceramic restorations and dental implants. This ceramic material has a high mechanical properties exceeding that of some types of steel and thus referring to as "steel" ceramic.
On the other hand, its high surface stability and chemical inertness represents a difficulty in establishing a strong and reliable bond with the overlying veneer, the underlying cement and the surrounding bone in case of zirconia implant.
Zirconia-Veneering Ceramic Interface:
De-lamination of the veneering porcelain from the underlying zirconia core is one of the most common complications. The main cause was attributed to the absence of transitional interface zone between the core and veneering materials.
Zirconia-Resin Cement Bond:
Surface treatment of zirconia to increase its bond with resin cements represents a challenge. The surface of the zirconia does not respond to common etching and silanation procedures, used with other glass containing ceramic materials.
Zirconia Implants Osseointegration
Coating the implant surface with a bioactive material enhanced the bone integration process; unfortunately zirconia is difficult to be coated.
Generally, the success of bonding relies on both mechanical interlocking and chemical interaction between different substructures. Unfortunately, acid etching cannot be used effectively on non silica-based ceramics, like Zr02, making it difficult to roughen the surface for mechanical retention. The lack of silica also removes the chemical bonding between silica-silane necessary for silanization. In addition, its high hardness presents a difficulty to roughen it by surface grinding and sandblasting with a possibility of surface micro-cracks formation.
Coating Techniques:
*t* Tribochemical silica coating technique air abraded the ceramic surface with alumina particles that have been coated with silica.
❖ Silicoating involved pyrolytically applying a silica coating on a substrate.
❖ Vapor-phase deposition technique, in which a chloro-silane gas (SiCU) was combined with water vapor to form a SkOy functionalized surface on a Zr02 substrate. ❖ Plasma spray technique was used to deposit a siloxane coating on Zr02.
Roughening Techniques:
** Selective infiltration etching used a heat induced maturation process to pre-stress surface grain boundaries in Zr02 to allow infiltration of boundaries with molten glass. The glass was then etched out using HF.
*t* Hot chemical etching solution had been proposed to etch Zr02 .
❖ Slurry of micro- pearls was painted on a Zr02 surface and fired in a furnace.
❖ Patent Application SE0302539-2, Nobel Biocare AB, Goteborg,
Sweden applied a layer of zirconia, alumina and/or hydroxyapetite to pre-sintered substructure. The particle size of the applied materials was large enough such that the particles did not penetrate the zirconia porosity. Porosities formed either by pore former which burned off or spaces between the particles because of its size.
Thus, several surface roughening and coating methods have been used to optimize the surface of zirconia, in an attempt to improve its bond strength. Unfortunately, these trails either insignificantly increase the bond strength to zirconia or are complicated. Accordingly, obtaining a strong bond to zirconia is still an obvious problem. Thus, introducing an easier, effective and time saving novel surface treatment to enhance the bond strength to the veneering ceramic, cement and bone is mandatory.
There is no known relevant prior art which discloses pre-sintered zirconia penetrating coats e.g. nano-silica or nano-calcium phosphate coatings. In addition, pre-sintered zirconia etching technique has not been previously performed. Disclosure of Invention:
The present invention is a process of modifying zirconia surface in its pre-sintered stage either by penetrating coats or etching. This innovated technique relies on gel application on the pre-sintered zirconia surface. Depending on the applied material, after sintering, the result is highly adhered coat or roughened zirconia surface (fig. l , lb, lc).
Pre-sinfered zirconia penetrating coat technique relies on that part of the coating material enters in the zirconia pores in its pre-sintered stage. During sintering, zirconia contracts and entraps the coating material between its grains (fig. l , lb, 3).
The previous technique includes the following steps:
a) The coating material, either silica or calcium phosphate based, are transformed into gel by their mixing with a gel forming agent which had been previously mixed with distillate water,
b) The ratio of (coating material: gel forming agent: distillate water) could be varied to give different coat thickness.
c) The pre-sintered coated zirconia is sintered in special furnace for zirconia sintering according to the manufacture instructions.
Pre-sintered zirconia etching technique depends on acidic gel application, which could etch the pre-sintered zirconia. The used acidic gel could be from the commercially available etching gels or prepared by mixing the acid with gel forming agent. The prior technique could be performed by either of two strategies:
I) Acidic gel (e.g. commercially available 5-9% HF dental ceramic etching gel) could be applied for 3-5 minutes, then removed by tape water washing for 3 minutes and ultrasonically cleaned for extra 3 minutes, followed by sintering (fig. l , lc, 4).
II) Acidic gel covering pre-sintered zirconia persists on its surface when the latter is entered the sintering furnace (fig.l , lc, 5).
Example (1):
Reference is made to figure 3. Pre-sintered zirconia disc shaped specimen was prepared from commercially available yttrium partially stabilized zirconia ceramic blocks (VITA In-Ceram 2000 YZ Cubes). The pre-sintered zirconia disc was coated with nanosilica gel. The nanosilica gel was prepared by mixing nanosilica with gel forming agent which had been previously mixed with distillate water. The ratio of (coating material: gel forming agent: distillate water) could be varied to give different coat thickness.
Example (2):
Reference is made to figure 4. Pre-sintered zirconia disc shaped specimen was prepared from commercially available yttrium partially stabilized zirconia ceramic blocks (Amanngirrbach, ceramill zi).The pre- sintered zirconia disc was etched with 9% HFgel (Ultradent Porcelain etch) for 3 minutes, then washed by tape water for 3 minutes and ultrasonically cleaned for extra 3 minutes, followed by sintering.
Example (3):
Reference is made to figure 5. Pre-sintered zirconia disc shaped specimen was prepared from commercially available yttrium partially stabilized zirconia ceramic blocks (Amanngirrbach, ceramill zi). Acidic gel (9% HF gel Porcelain etch, Ultradent) covering pre-sintered zirconia persists on its surface when the latter is entered the sintering furnace
Brief Description of Drawings:
Figure 1: shows symbolically gel application using a brush on the pre- sintered zirconia surface.
Figure la: represents symbolically untreated fully sintered zirconia.
Figure lb: represents symbolically coated fully sintered zirconia
Figure lc: represents symbolically etched fully sintered zirconia
Figure 2: SEM photo showing the dense crystalline structure of the
untreated fully sintered zirconia.
Figure 3: SEM photo showing the penetration of the coat with the fully sintered zirconia grains.
Figure 4: SEM photo showing roughened fully sintered zirconia surface due to acid application and removal before sintering.
Figure 5; SEM photo showing the roughened fully sintered zirconia surface caused by acid persistence on pre-sintered zirconia when entered the sintering furnace.
Best Mode for Carrying Out the Invention:
The applied material is applied in the gel form. Industrial Applicability:
I-Coated Zirconia Surface:
1-Most commercial veneers manufacturers recommend special liners application to sintered zirconia to increase the core-veneer bond. This occurs in a separate firing cycle. In addition, the absence of core-veneer transitional zone resulted in de-bonding or veneer chipping. On the other hand, by this innovated technique, non-extra-step silica coating creates a transitional zone.
2- One of the most common commercial surface treatments of the fitting surface of the zirconia fixed prosthodontics is sandblasting with silica-coated aluminum oxide particles to apply a silica coating to the target surface. Controversy exits about the effect of sandblasting on the ceramic strength. However by the innovated technique, the zirconia fitting surface could be coated easily with a thin layer of silica. Consequently, this technique changes the zirconia surface from non-glass containing to glass containing one. By this simple technique, the zirconia surface could respond to common etching and silanation procedures.
3 - Coating the zirconia implant surface with a bioactive material.
II-Roughened Zirconia Surface:
Roughened surface could increase the surface area for bonding with the different surfaces; veneer, cement or bone.

Claims

Claim 1 : This new technique is characterized by modifying zirconia surface in its pre-sintered stage either by innovated penetrating coats or etching.
Claim2: According to claim (1), this technique is characterized by its application to various zirconia based dental appliances e.g. fixed prosthodontics, implants and endodontic posts.
Claim3: According to claim (2), as regard the zirconia based fixed prosthodontics, this technique is characterized by its application for both the veneering and fitting surfaces to increase its bonding to the ceramic and cement respectively.
Claim4: According to claim (1), the penetrating coats are characterized by their composition of either silica or calcium phosphate based compounds.
Claim5: According to claim (4), the silica or calcium phosphate based compounds are characterized by that their particle sizes could be in the nano size or micron size. However, nano particle sized coats are characterized by their higher surface energy.
CIaim6: According to claim (5), silica based coats are characterized by their application to veneering and fitting surface of fixed prosthodontics and zirconia posts mainly, while calcium phosphate based coats are characterized by their application to zirconia implants mainly.
Claim7: According to claim (6), the penetrating coats are characterized by their application in thin gel form.
Claim8: According to claim (7), the gel form is characterized by mixing the coating material (silica or calcium phosphate based compounds) with a gel forming agent.
CIaim9: According to claim (8), the gel forming agent is characterized by its mixing with distillate water. ClaimlO: According to claim (9), the coating material is characterized by its application by brushing or immersion.
Claim 11 : According to claim (10), the coat is characterized by its application before sintering (immediately or before sintering by half an hour).
Claim 12: According to claim (1), pre-sintered zirconia etching technique is characterized by its roughening effect due to acidic gel application. Claim 13: According to claim (12), the acidic gel is characterized by being from the commercially available etching gels or prepared by mixing the acid with gel forming agents.
Claim 14: According to claim (12), the applied gel is characterized by that it could be removed from the zirconia surface before sintering.
Claim 15: According to claim (14), the removal of acidic gel is characterized by its washing by tape water and/or ultrasonic cleaner. Claim 16: According to claim (12), the applied gel is characterized by that it could be applied on pre-sintered zirconia and persist on its surface when the latter is entered the sintering furnace.
PCT/EG2011/000014 2011-06-14 2011-06-14 Pre-sintered zirconia surface treatment technique for dental appliances WO2012171535A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EG2011/000014 WO2012171535A1 (en) 2011-06-14 2011-06-14 Pre-sintered zirconia surface treatment technique for dental appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EG2011/000014 WO2012171535A1 (en) 2011-06-14 2011-06-14 Pre-sintered zirconia surface treatment technique for dental appliances

Publications (1)

Publication Number Publication Date
WO2012171535A1 true WO2012171535A1 (en) 2012-12-20

Family

ID=44628055

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EG2011/000014 WO2012171535A1 (en) 2011-06-14 2011-06-14 Pre-sintered zirconia surface treatment technique for dental appliances

Country Status (1)

Country Link
WO (1) WO2012171535A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216056A1 (en) * 2015-08-21 2017-02-23 Dental Direkt GmbH Entfärbeliquid
CN108373328A (en) * 2018-04-22 2018-08-07 杭州而然科技有限公司 A kind of screening color zirconium oxide veneer
JP2019108289A (en) * 2017-12-18 2019-07-04 クラレノリタケデンタル株式会社 Zirconia calcined body for dentistry
WO2020049393A1 (en) * 2018-09-04 2020-03-12 3M Innovative Properties Company Glazing composition for a dental zirconia article, process of sintering and kit of parts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6709694B1 (en) * 1999-02-04 2004-03-23 3M Espe Ag Coloring ceramics by way of ionic or complex-containing solutions
WO2010121101A2 (en) * 2009-04-17 2010-10-21 Research Triangle Institute Surface modification for enhanced silanation of ceramic materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6709694B1 (en) * 1999-02-04 2004-03-23 3M Espe Ag Coloring ceramics by way of ionic or complex-containing solutions
WO2010121101A2 (en) * 2009-04-17 2010-10-21 Research Triangle Institute Surface modification for enhanced silanation of ceramic materials

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
JEFFREY R PIASCIK ET AL: "Development of a novel surface modification for improved bonding to zirconia", DENTAL MATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 27, no. 5, 17 January 2011 (2011-01-17), pages E99 - E105, XP028158979, ISSN: 0109-5641, [retrieved on 20110209], DOI: 10.1016/J.DENTAL.2011.01.005 *
JI-EUN MOON ET AL: "The effect of preparation order on the crystal structure of yttria-stabilized tetragonal zirconia polycrystal and the shear bond strength of dental resin cements", DENTAL MATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 27, no. 7, 28 March 2011 (2011-03-28), pages 651 - 663, XP028095542, ISSN: 0109-5641, [retrieved on 20110404], DOI: 10.1016/J.DENTAL.2011.03.005 *
PIASCIK J R ET AL: "Surface modification for enhanced silanation of zirconia ceramics", DENTAL MATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 25, no. 9, 1 September 2009 (2009-09-01), pages 1116 - 1121, XP026391588, ISSN: 0109-5641, [retrieved on 20090418] *
S. T. KIM ET AL: "Bond strength of Y-TZP-zirconia ceramics subjected to various surface roughening methods and layering porcelain", SURFACE AND INTERFACE ANALYSIS, vol. 42, no. 6-7, 1 June 2010 (2010-06-01), pages 576 - 580, XP055022197, ISSN: 0142-2421, DOI: 10.1002/sia.3209 *
ZHANG Y ET AL: "Graded structures for damage resistant and aesthetic all-ceramic restorations", DENTAL MATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 25, no. 6, 1 June 2009 (2009-06-01), pages 781 - 790, XP026086500, ISSN: 0109-5641, [retrieved on 20090201], DOI: 10.1016/J.DENTAL.2009.01.002 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216056A1 (en) * 2015-08-21 2017-02-23 Dental Direkt GmbH Entfärbeliquid
JP2019108289A (en) * 2017-12-18 2019-07-04 クラレノリタケデンタル株式会社 Zirconia calcined body for dentistry
CN108373328A (en) * 2018-04-22 2018-08-07 杭州而然科技有限公司 A kind of screening color zirconium oxide veneer
CN108373328B (en) * 2018-04-22 2023-04-25 杭州而然科技有限公司 Color-shading zirconia veneer
WO2020049393A1 (en) * 2018-09-04 2020-03-12 3M Innovative Properties Company Glazing composition for a dental zirconia article, process of sintering and kit of parts
CN112638349A (en) * 2018-09-04 2021-04-09 3M创新有限公司 Glazing composition for dental zirconia product, sintering method and kit

Similar Documents

Publication Publication Date Title
Thompson et al. Adhesion/cementation to zirconia and other non-silicate ceramics: where are we now?
Liu et al. Evaluation of four surface coating treatments for resin to zirconia bonding
JP6336150B2 (en) Body made from ceramic material
CA2753968C (en) Zirconium dioxide based prostheses
US20090215010A1 (en) Dental restoration and method for producing the same, and porcelain paste for dental restoration
KR101491489B1 (en) Dental implant having a surface made of a ceramic material
KR20080094625A (en) Process for providing a topography to the surface of a dental implant
CN108658628B (en) Method for bonding and combining zirconia prosthesis and natural tooth
WO2012171535A1 (en) Pre-sintered zirconia surface treatment technique for dental appliances
US20170042643A1 (en) Surface modification for enhanced bonding of ceramic materials
US8617704B2 (en) Surface modification for enhanced silanation of ceramic materials
Matinlinna Processing and bonding of dental ceramics
Soltaninejad et al. Nd: YAG Laser Treatment of Bioglass-coated Zirconia Surface and Its Effect on Bond Strength and Phase Transformation.
JP6095653B2 (en) Body made from ceramic material
US10040727B2 (en) Process for providing a defined surface topography to at least a portion of a ceramic body
Özcan et al. Adhesion to zirconium dioxide used for dental reconstructions: surface conditioning concepts, challenges, and future prospects
Noro et al. Influence of hydrophilic pre-treatment on resin bonding to zirconia ceramics
CN115141038A (en) Method for modifying bonding surface of zirconia ceramic for enhancing bonding capability
JP5180547B2 (en) Glass for dental applications
Shrivastava et al. All Ceramic Cementation: A Key to Successful Restoration.
US20140272799A1 (en) Yttria-treated porcelain veneer
Shim et al. The effect of cleaning methods on bond strength of zirconia after saliva contamination
Özcan Airborne particle abrasion of zirconia fixed dental prostheses
SU1732961A1 (en) Method for production of cerametallic denture
Obradović-Đuričić et al. Problem vezivanja nadoknada od cirkonije-pregled literature

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11729894

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11729894

Country of ref document: EP

Kind code of ref document: A1