Laser welding and syncristallization techniques comparison: “Ex vivo” study
Identifieur interne : 001075 ( Main/Curation ); précédent : 001074; suivant : 001076Laser welding and syncristallization techniques comparison: “Ex vivo” study
Auteurs : Carlo Fornaini ; Marco Meleti ; Paolo Vescovi ; Elisabetta Merigo ; Jean-Paul RoccaSource :
- Laser Therapy [ 0898-5901 ] ; 2013.
Abstract
In 2009, the same procedure was performed through the use of laser (laser welding)
The aim of this study is to compare electrowelding and laser welding for intra-oral implant abutments stabilization on “ex vivo models” (pig jaws).
The strength of the welded joints was evaluated by a traction test after the removal of the implants. For temperature measurements a descriptive analysis and for traction test “values unpaired t test with Welch's correction” were performed: the significance level was set at P<0.05.
Url:
DOI: 10.5978/islsm.13-OR-23
PubMed: 24511205
PubMed Central: 3916668
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<author><name sortKey="Fornaini, Carlo" sort="Fornaini, Carlo" uniqKey="Fornaini C" first="Carlo" last="Fornaini">Carlo Fornaini</name>
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<front><div type="abstract" xml:lang="en"><p><bold>Background and aims:</bold>
Stabilization of implant abutments through electric impulses at high voltage for a very short time (electrowelding) was developed in the Eighties.</p>
<p>In 2009, the same procedure was performed through the use of laser (laser welding)</p>
<p>The aim of this study is to compare electrowelding and laser welding for intra-oral implant abutments stabilization on “ex vivo models” (pig jaws).</p>
<p><bold>Materials and methods:</bold>
Six bars were welded with two different devices (Nd:YAG laser and Electrowelder) to eighteen titanium implant abutment inserted in three pig jaws. During the welding process, thermal increase was recorded, through the use of k-thermocouples, in the bone close to the implants.</p>
<p>The strength of the welded joints was evaluated by a traction test after the removal of the implants. For temperature measurements a descriptive analysis and for traction test “values unpaired t test with Welch's correction” were performed: the significance level was set at P<0.05.</p>
<p><bold>Results:</bold>
Laser welding gives a lower thermal increase than Electrowelding at the bone close to implants (Mean: 1.97 and 5.27); the strength of laser welded joints was higher than that of Electrowelding even if nor statistically significant. (Mean: 184.75 and 168.29)</p>
<p><bold>Conclusion:</bold>
Electrowelding seems to have no advantages, in term of thermal elevation and strength, while laser welding may be employed to connect titanium implants for immediate load without risks of thermal damage at surrounding tissues.</p>
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