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What is If during rubber dam application, you see the gingiva is protruding out of margins; what can be the cause for it? and explain in detail?
Holes punched too close together - holes pull away from teeth causing leakage.
Holes punched too far apart- dam bunches up between teeth.
Holes position too low on the dam - dam covers patient's eyes or nose.
Holes position too high on dam - dam does not extend over upper lip.