After the first expansion, each team had nine rivals rather than seven, and the 154-game season made for bad math, MLB's official historian, John Thorn, explains. To play 22 games against each rival would require an 198-game season, so MLB settled on 18 games per rival for nine rivals, for a total of 162 games. (Thorn clarifies that yes, in 1961, after the AL had expanded but the NL had not, the leagues played seasons of different lengths.
Sometimes called sleep dentistry, IV dental sedation provides moderate to deep sedation, and can cost $250-$900 or more but is typically $500-$700, depending on the dentist, length of the appointment and location. Dentists must meet specific board requirements to do IV sedation.
Sedation dentistry uses a mild calming drug while your son or daughter receives a dental care procedure. The medicine may last up to six hours. One of the most common forms of sedating a dental patient is the use of nitrous oxide â also commonly referred to as laughing gas.