Unintentional drug overdose deaths have increased exponentially in the last decade, both nationally. and statewide. In Ohio, there has been a 366% increase in drug overdose deaths from 2000 to 2012. Unintentional drug overdoses caused 1,914 deaths in 2012. deaths. opioid-related overdose deaths contrasted with a large increase in heroin-related deaths. Figure 1.
The biological reason behind teeth sensitivity to cold starts in the pulp of the tooth. The nerves in the pulp make teeth sensitive to cold when tooth roots become exposed due to receding gums or gum disease.
Sensitivity. Sensitivity can occur when the underlying layer of your teeth becomes exposed as a result of receding gum tissue. The roots of your teeth, which are not covered by protective hard enamel, contain thousands of tiny tubules leading to the tooth's nerve center (the pulp).When exposed, these tubules allow stimuli â such as hot or cold food â to stimulate the nerve in your tooth, causing the pain you feel.he roots of your teeth, which are not covered by protective hard enamel, contain thousands of tiny tubules leading to the tooth's nerve center (the pulp). When exposed, these tubules allow stimuli â such as hot or cold food â to stimulate the nerve in your tooth, causing the pain you feel.