PMID: 9553889Apr 29, 1998Paper

Thermal modeling of laser welding for titanium dental restorations

The Journal of Prosthetic Dentistry
R R Wang, C T Chang

Abstract

Concerns of laser welding for titanium dental prostheses are the limited depth of laser beam penetration and extensive surface damage. This study used numerical heat transfer simulation to explain this behavior and offers an alternate multiple-pulsed method. A one-dimensional finite difference analysis was used to simulate heat transfer in pure titanium and gold during laser welding with a custom-constructed software program. The thermal gradient profiles revealed the problem to be inherent in titanium's low thermal conductivity; gold did not have this problem. Time-elapsed multiple pulses on titanium relieved this problem by giving the energy time to diffuse into the depth of the material. With single-pulse laser irradiation on titanium, an increase in power could not greatly increase melting depth. The excess energy only vaporized the material surface.

Citations

Jul 12, 2008·European Journal of Orthodontics·Jens Johannes BockRobert Andreas Werner Fuhrmann
Apr 1, 2006·Journal of Applied Oral Science : Revista FOB·Daniela CastilioWellington Cardoso Bonachela
Sep 29, 2009·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Caroline Bertrand, Angeline Poulon-Quintin
Jul 3, 2009·Photomedicine and Laser Surgery·Carlo FornainiSam Nammour
Dec 12, 2013·Lasers in Medical Science·Youssef S Al JabbariSpiros Zinelis
Sep 11, 2004·Implant Dentistry·Ahmad Maalhagh-Fard, Warren C Wagner
May 3, 2006·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Ikuya Watanabe, D Scott Topham
Mar 27, 2009·Lasers in Medical Science·C FornainiS Nammour
Aug 4, 2010·Journal of Oral Rehabilitation·J M C Nuñez-PantojaM F Mesquita
Mar 27, 2012·Dental Materials Journal·Yasuko TakayamaChikahiro Ohkubo
Jun 30, 2009·Lasers in Medical Science·Carlo FornainiSamir Nammour
Nov 15, 2018·Micromachines·Asma PerveenCarlo Fornaini
Mar 2, 2011·Brazilian Oral Research·Juliana Maria Costa Nuñez-PantojaMarcelo Ferraz Mesquita
Dec 18, 2008·Journal of Applied Oral Science : Revista FOB·Jens Johannes BockRobert Andreas Werner Fuhrmann

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