Crowns in One Hour, Can it Really be done? Do you need s temporary crown for 14 days before you get a permanent crown? Dr. Marko Kamel of Woodbury Dental Arts in Woodbury, MN says "NO!". No more temporary crowns for Dr. Kamel's patients! His patients just need one sitting for a crown. http://www.woodburydentalarts.com/ 651-436-7559