Both inlays and onlays are pre-formed in a lab before being bonded to the damaged or decayed tooth. The difference of use depends on the amount of tooth structure that has been lost to wear or decay. Your dentist will help you decide which is most appropriate for you.
Predetermined overhead rate is a rate used to charge overhead cost to jobs in production; the rate is established in advance for each period by use of estimates of total manufacturing overhead cost and of the total allocation base for the period.redetermined overhead rate is a rate used to charge overhead cost to jobs in production; the rate is established in advance for each period by use of estimates of total manufacturing overhead cost and of the total allocation base for the period.
If $420,000 is estimated manufacturing overhead cost for a period and the company uses machine hours as the activity driver (see first paragraph of the main article), then you need to divide $420,000 by 60,000 hours. The predetermined overhead rate would be $7.00 per machine hour as calculated below:redetermined overhead rate is used to apply manufacturing overhead to products or job orders and is usually computed at the beginning of each period by dividing the estimated manufacturing overhead cost by an allocation base (also known as activity base or activity driver).