1 CostHelper readers report paying $1,000-$5,000 for an implant with an average cost of $2,488.  Placing an abutment and a dental crown on a single implant typically adds $500-$3,000 to the cost of just the implant, for a total of $1,500-$13,000 or more. CostHelper readers report paying $1,750-$8,270 for an implant, flipper tooth, abutment, crown and all needed procedures, with an average cost of $4,263.
Paralytic polio is divided into three categories, according to the level of severity. The first type is called spinal polio. About 79% of paralytic cases are from spinal polio, and it is characterized by asymmetrical paralysis of the legs. The second type is called bulbar polio and it accounts for 2% of polio infections.
Salk's Impact. There were 28,985 cases of polio in 1955, and there were only 14,647 cases in 1956. The Salk vaccine, also called the inactivated polio vaccine (IPV), is credited with the enormous decrease in cases.The vaccine contained three strains of the polio virus, and it provided at least partial immunity.here were 28,985 cases of polio in 1955, and there were only 14,647 cases in 1956. The Salk vaccine, also called the inactivated polio vaccine (IPV), is credited with the enormous decrease in cases.