There are a variety of situations that require a tooth to be restored with a dental crown. The following are the most common: Large filling: When a tooth has a cavity or fracture that involves half the width of the tooth or more, it needs to be covered with a crown. This is because the remaining tooth around the large filling is so weak that it is prone to fracture. Sometimes a large filling that has been in the mouth for a while will need to be replaced with a crown because the tooth shows signs of stress and cracks around the filling.
How marijuana affects the mind. Marijuana reaches the same pleasure centers in the brain that are targeted by heroin, cocaine and alcohol. Depending on the quantity, quality and method of consumption, marijuana can produce a feeling of euphoria â or high â by stimulating brain cells to release the chemical dopamine.
Physical Effects. Marijuana comes from the hemp plant Cannabis sativa. It has an active ingredient called THC that makes you feel high. THC and other compounds in marijuana can also affect the way your body works.Most people smoke the plant's dried leaves, flowers, stems, and seeds.n this article. If youâve ever smoked a joint or eaten a pot-laced brownie, youâre hardly alone: More than 1 in 3 people in America have tried marijuana at one point in their lives. Though occasional use isnât usually harmful, pot can affect your body and mind any time it gets into your system.