What step should be completed before tooth preparation when making a custom provisional? What type of tray or mold is used to fabricate a custom provisional? After the acrylic resin is mixed, how would you place it for the prepared tooth?
Added by Stephen C.
Step 1
Before tooth preparation, a preliminary impression of the patient's teeth should be taken. This impression will be used to create a model of the patient's teeth, which will then be used to fabricate the custom provisional. Show more…
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You have been asked to fabricate a custom provisional for tooth #30. Is there a provisional other than a custom that could be used for this procedure? If so, what kind? Describe two techniques to fabricate a custom provisional. What specific areas of the provisional are the most critical when fitting and when trimming? List the specific instruments you would use in trimming and finishing the provisional. After removing the provisional from the prepared tooth, you notice that there is a 1 mm marginal discrepancy. What is your plan of action to improve the provisional so that it fits properly? When the provisional is fitting properly, what is the next step before it is cemented? Describe the setup for cementation of the provisional. List the steps for removal of excess cement around the provisional.
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