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DENTIN is the dental board preparation  leader for dental students to easily pass the NBDE, NBDHE, ADEX, WREB, and FL Dental Laws. Our awesome study guides are used by thousands of dental students, dental hygiene students, and dentists globally. DENTIN study guides are "high yield" providing dental students and dentists with clear, concise, and current test preparation content to achieve scoring excellence on U.S. dental examinations and dental licensure boards. 

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LOCAL ANESTHETIC NBDE & NBDHE PEARL

Ricky Rubin

Local anesthetics should NEVER be frozen while being shipped or stored. Frozen anesthetic can compromise the seal of the rubber plunger in the carpule and subsequently introduce AIR into the anesthetic solution and degrade the anesthetic. When administering local anesthetic ALWAYS aspirate to ensure that the needle is not entering a blood vessel. If a positive aspiration occurs (blood in the carpule), REDIRECT the syringe and re-aspirate until a negative aspiration is achieved. 

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