Abstract:
:The diamond burs of two dental CAD/CAM systems (GN and CD) were examined if they could be used to fabricate up to 21 ceramic full crowns without fracture. After one, 11, and 21 machining times, the surfaces of the diamond burs were observed and the number of particles captured on SEM pictures was counted. The average surface roughness of the crowns was also measured. All diamond burs could be used to fabricate 21 ceramic crowns without fracture. A significant decrease in the number of diamond particles was found on the surfaces of GN burs after 11 and 21 machining times, but not on those of CD burs. The average surface roughness of GN crowns significantly increased with increase in the number of machining times. A significant positive correlation was found between the average surface roughness and the number of diamond particles.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Yara A,Ogura H,Shinya A,Tomita S,Miyazaki T,Sugai Y,Sakamoto Ydoi
10.4012/dmj.24.134keywords:
subject
Has Abstractpub_date
2005-03-01 00:00:00pages
134-9issue
1eissn
0287-4547issn
1881-1361journal_volume
24pub_type
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