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The average pull-off force for a pyramidal silicon nitride probe with ELAC at different collagen to DS-SILY molar ratios. The pull-off force was effectively equal for collagen control and 30 to 1 Collagen:DS-SILY threads. The pull-off force for 10 to 1 was lower by nearly a factor of 5. The horizontal lines connecting groups indicate statistical significance (p < 0.05).
