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Titanium and hard composite resin bonded

Author: LiDongMei
Tutor: GuoTianWen
School: Fourth Military Medical University
Course: Clinical Stomatology
Keywords: Titanium Titanium alloy Polymer polymerization porcelain porcelain Rigid composite resin The surface treatment agent Bond Sandblasting Contact angle Wettability Surface roughness Etching Heat treatment after photocuring Micro-arc oxidation technology Microfissure Shear bond strength Thermal cycles
CLC: R783.1
Type: PhD thesis
Year: 2003
Downloads: 221
Quote: 1
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Abstract

With a variety of indirect restorations advent of hard composite resin systems, metal - resin bonded restorations received widespread attention and application. The hard composite resins and titanium used in combination making fixed or removable dentures either titanium biocompatibility, high mechanical strength, the proportion of small advantages, avoid other non-precious dental alloys (Co-Cr, Ni-Cr alloy) potential biological toxicity; ceramic hardness and also avoid excessive excessive wear of the teeth (occlusion), and after the collapse of porcelain is not easy to fix the shortcomings. With the development of further improve performance of a hard resin and the titanium casting techniques and bonding techniques, the application of titanium - Resin prosthesis will be more widely. , But the lower the bond strength of the titanium with a resin is still of titanium - Resin fix the key issues in the clinical application. This topic is selected new hard composite resin - Solidex polymerization porcelain system as the basic material, to the Artglass resin material as control particle size selected for the study on the role of the pretreatment - sandblasting, and reducing blasting causes the adverse effects of proposed recommendations; further screening preparation of the HF-based etchants, etching and pressurized secondary heat treatment method to improve the performance of the combination of titanium and resin, and a preliminary exploration of its mechanism; using infrared The method of processing, micro-arc oxidation technology to enhance the feasibility of titanium with resin bonding properties, exploratory study. The purpose of this study is the finding and development can be simple, effective way to improve the ways and means of titanium - Resin bonding properties, exploration titanium - Resin bonding mechanism to provide a reference for clinical application and Solidex system with titanium bond The performance was evaluated. Best experimental results are as follows: 1. In infrared spectroscopic analysis, Solidex polymerization Metal Photo Primer contained in the ceramic system mainly comprising acrylate oligomer and an acrylic monomer. Its main role is to increase the wettability of the opaque resin of the metal surface, since the role of the binder, with the metal surface by the ligand binding to form an adhesive force; 2. Different types of titanium and the adhesive strength of the hard composite resin differences, the titanium processing methods its hard adhesive strength of the composite resin (casting / machining) no significant effect; 3. Sandblasting, the bond strength of the different particle size of alumina particles of titanium and a hard composite resin significant impact of coarse alumina particles (60 #, approximately 250μm ~ 300μm) can better improve after blasting the wettability of the metal surface to increase the surface roughness, the vehicle in combination with primer. Military Morgan Stanley Miao people the sand live public long can get greater bond strength; 4. After blasting will be a large number of the alumina grit is embedded in the surface of the titanium metal, and difficult to remove; conducive to improve the adhesive strength of the titanium with a resin to remove residual alumina particles; different removal effect of different cleaning methods, the final adhesive strength influential, powerful ultrasonic cleaning is recommended; 5. Titanium and resin-bonded titanium surface after blasting using HF-based etching liquid and the primer from the distribution used in combination prime alone is used, higher bond strength can be obtained, HF acid concentration to 4 knife% bonded maximum force. Etching treatment, the contact angle of the surface of the titanium metal than a simple blast treatment significantly reduced the HF concentration was 4%, the smallest contact angle; surface roughness is reduced with increasing etching intensity; 6. The appropriate infrared treatment can improve the adhesion strength of the titanium with a resin, but the poor reproducibility; 7. After photocuring additional pressurized hot curing treatment can improve the surface hardness and mechanical strength of the Atglass, and Solidex two resins, thereby improving the adhesion strength of the both with a titanium; 8. The thermal cycle aging will significantly reduce the bond strength of titanium and a hard composite resin. After aging, whether through the additional secondary heat treatment, sandblasting plus the titanium surface and the resin bonding interface of the primer treatment has microfractures formed, the gap width is less than 0. sptti; titanium surface sandblasting then with HF-based self-etching treatment with etching fluid, only of part Solidex titanium bonding interface fracture the Artglass-titanium bonding interface no fissures produce; 9. The bond strength of the different types of hard composite resin and titanium exist differences, nglass with titanium bonding strength than Solidex hard resin; 10. Titanium surface micro-arc oxidation technology suitable for use to improve the methods of surface modification of titanium - resin bonding properties, but should be further studied.

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