Depending on your oral restoration's needs, at least 2 dental visits are required. The first visit for tooth preparation usually takes about 30 to 45 minutes. After your first visit, the dental laboratory will be fabricating your permanent custom-made fittings. The waiting period between first and second visit may take up to 3 weeks. Finally, you are required to return to the clinic for your permanent crown/bridge placement. This second visit can usually be concluded in 20 to 30 minutes, excluding the waiting time.