A. Forensic science, by definition, is the application of science to those criminal and civil laws that are enforced by police agencies in a criminal justice system [1].orensic science originates from the individuals who developed the principles and techniques needed to identify or compare physical evidence, and from those who recognized the necessity of merging these principles into a coherent discipline that could be practically applied to a criminal justice system.
Marcaine given to numb the lower jaw using an inferior alveolar block technique can last up to six hours and Septocaine given as an inferior alveolar block to numb the lower jaw can cause residual numbness of the tongue which can last up to six months.
Lidocaine mixed with a small amount of epinephrine is available to allow larger doses to be used as numbing and to make it last longer. When used as an injectable it typically begins working within four minutes and lasts for half an hour to three hours. Lidocaine may also be applied directly to the skin for numbing. Common side effects with intravenous use include sleepiness, muscle twitching, confusion, changes in vision, numbness, tingling, and vomiting.