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Lab talk, the good, the bad, and the ugly
Metal
Milled Bridges Rocking Again
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<blockquote data-quote="Solid" data-source="post: 220070" data-attributes="member: 16946"><p>Manufacturers generally note the slow cooling for veneering YSZ, some emphasizes only the last cycle that is the glaze. slow cooling by definition can't be more than 50c/m and mainly to avoid delamination. as for fracturing the framework itself I 'd like you to elaborate more on that since never happened with me and used to do 8-10 units a day including opaque and adjusting frameworks whether 3 unit bridge or full arch. many zirconia porcelains fire at 800c and find it hard to believe if the muffle opens at 800c without slow cooling to 400c then to 23c that will cause fracture</p></blockquote><p></p>
[QUOTE="Solid, post: 220070, member: 16946"] Manufacturers generally note the slow cooling for veneering YSZ, some emphasizes only the last cycle that is the glaze. slow cooling by definition can't be more than 50c/m and mainly to avoid delamination. as for fracturing the framework itself I 'd like you to elaborate more on that since never happened with me and used to do 8-10 units a day including opaque and adjusting frameworks whether 3 unit bridge or full arch. many zirconia porcelains fire at 800c and find it hard to believe if the muffle opens at 800c without slow cooling to 400c then to 23c that will cause fracture [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Metal
Milled Bridges Rocking Again
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