The measurement of retentive force of laser-melted and cast post-keepers of Magfit magnetic attachments / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 386-388, 2003.
Article
in Chinese
| WPRIM
| ID: wpr-283570
ABSTRACT
<p><b>OBJECTIVE</b>In order to compare the influence of casting and laser welding on magnetic retentive force, the magnetic retentive forces of laser-melted and cast post-keepers of the magnetic attachments were measured in vitro.</p><p><b>METHODS</b>5 cast and 6 laser-melted post-keeper specimens (Magfit MD800) were formed, respectively. Using untreated keeper as control group, the vertical magnetic retentive forces were measured by a universal testing machine.</p><p><b>RESULTS</b>The average vertical magnetic retentive force of the laser-melted post-keeper group and the cast post-keeper group in vitro were (4.223 +/- 0.217,0)N, (3.792,9 +/- 0.296,4)N, respectively. Compared with the cast post-keeper group, the average vertical magnetic retentive force of the laser-melted post-keeper groups was much higher in vitro (P < 0.05).</p><p><b>CONCLUSION</b>Laser welding had less influence on the magnetic retentive force of the magnetic attachments than casting.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Dental Soldering
/
Stainless Steel
/
Welding
/
Dental Casting Technique
/
Post and Core Technique
/
Dental Prosthesis Retention
/
Dental Alloys
/
Dental Casting Investment
/
Denture Precision Attachment
/
Electromagnetic Fields
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2003
Type:
Article
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