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 Indian J Med Microbiol  
 

Figure 1: Premolar mounted on the universal testing machine; the lingual cusp of each specimen is submitted to axial compression up to failure at an angle of 45° to the palatal cusp and 150° to its longitudinal axis

Figure 1: Premolar mounted on the universal testing machine; the lingual cusp of each specimen is submitted to axial compression up to failure at an angle of 45° to the palatal cusp and 150° to its longitudinal axis