In vitro infrared thermography assessment of temperature peaks during the intra-oral welding of titanium abutments

Degidi, Marco; Nardi, Diego; Sighinolfi, Gianluca; Piattelli, Adriano

doi:10.1016/j.infrared.2012.03.010

Cited by 6 publications

(7 citation statements)

References 12 publications

(14 reference statements)

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“…Moreover, the microstructural modifications induced by the welding heating were always observed in very limited zones of the joints, only few hundreds of microns far from the JC, confirming the very fast temperature drop, up to values that do not exceed the threshold limits above which tissue injury could occur. 4…”

Section: Resultsmentioning

confidence: 99%

Microstructural characterization and hardness properties of electric resistance welding titanium joints for dental applications

Ceschini

Boromei

Morri

et al. 2015

Proc Inst Mech Eng H

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The electric resistance welding procedure is used to join a titanium bar with specific implant abutments in order to produce a framework directly in the oral cavity of the patient. This investigation studied the effects of the welding process on microstructure and hardness properties of commercially pure (CP2 and CP4) Ti components. Different welding powers and cooling procedures were applied to bars and abutments, normally used to produce the framework, in order to simulate the clinical intraoral welding procedure. The analyses highlighted that the joining process did not induce appreciable changes in the geometry of the abutments. However, because of unavoidable microstructural modifications in the welded zones, the hardness decreased to values lower than those of the unwelded CP2 and CP4 Ti grades, irrespective of the welding environments and parameters.

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Section: Resultsmentioning

confidence: 99%

Microstructural characterization and hardness properties of electric resistance welding titanium joints for dental applications

Ceschini

Boromei

Morri

et al. 2015

Proc Inst Mech Eng H

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“…This investigation tested frameworks that were all modelled on the same resin master model while, in clinical practice, the electric resistance spot welding framework is welded directly into the oral cavity of the patient without causing any thermal injury. 49 A further investigation could overcome this limitation by providing a new master model for tests, obtained from the mould of the resin master model adopted for the tests described herein.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Strain gauge analysis of implant-supported, screw-retained metal frameworks: Comparison between different manufacturing technologies

Degidi¹,

Caligiana

Francia

et al. 2016

Proc Inst Mech Eng H

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Over the past decades, the technological development in the medical field, coupled with the ongoing scientific research, has led to the development and improvement of dental prostheses supported by screw-retained metal frameworks. A key point in the manufacture of the framework is the achievement of a passive fit, intended as the capability of an implant-supported reconstruction to transmit minimum strain to implant components as well as to the surrounding bone, when subject to any load. The fitting of four different kinds of screw-retained metal frameworks was tested in this article. They differ both in materials and manufacturing process: two frameworks are made by casting, one framework is made by computer-aided design and computer-aided manufacturing and one framework is made by electric resistance spot welding (WeldONE, DENTSPLY Implants Manufacturing GmbH, Mannheim, Germany). The passivity of the frameworks was evaluated on the entire system, composed of a resin master cast, the implant analogues embedded in the cast and the frameworks. Strains were recorded by means of an electrical strain gauge connected to a control unit for strain gauge measurements. The experimental tests were carried out in the laboratories of the Department of INdustrial engineering at the University of Bologna. The results of the test campaigns, which compared three samples for each technological process, showed that no significant differences exist between the four framework types. In particular, the frameworks made by the resistance welding approach led to a mechanical response that is well comparable to that of the other tested frameworks.

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“…Current flowing through the contact points, being in contact with the parts to weld, warms up to the point of fusion, achieving a solid, welded junction. The process is carried out without producing any heat, causing no discomfort to the patient or damage to surrounding tissues . The framework created by welding the titanium bar to the copings was removed.…”

Section: Methodsmentioning

confidence: 99%

Computer‐assisted surgery and intraoral welding technique for immediate implant‐supported rehabilitation of the edentulous maxilla: case report and technical description

Albiero

Benato

2015

Robotics Computer Surgery

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In vitro infrared thermography assessment of temperature peaks during the intra-oral welding of titanium abutments

Cited by 6 publications

References 12 publications

Microstructural characterization and hardness properties of electric resistance welding titanium joints for dental applications

Microstructural characterization and hardness properties of electric resistance welding titanium joints for dental applications

Strain gauge analysis of implant-supported, screw-retained metal frameworks: Comparison between different manufacturing technologies

Computer‐assisted surgery and intraoral welding technique for immediate implant‐supported rehabilitation of the edentulous maxilla: case report and technical description

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