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  Indian J Med Microbiol
 

Figure 6 Representative samples of sandblasting and oxidation subgroups (a and b), showing cohesive failure mode within the porcelain and laser-etching subgroups (c and d), showing mixed failure mode.

Figure 6 Representative samples of sandblasting and oxidation subgroups (a and b), showing cohesive failure mode within the porcelain and laser-etching subgroups (c and d), showing mixed failure mode.