Tooth-Colored Preformed Polycarbonate Crowns Quiz

What is a custom provisional?

What term is used for temporary coverage worn during cast-prep?

What is a preformed object?

What material is used for provisional coverage for primary molars?

What type of provisional is tooth-colored and commonly used for anterior teeth?

How long will a patient normally wear a provisional?

Who can legally fabricate and temporarily cement a provisional in the dental office?

What type of provisional is the most natural looking?

What type of provisional can be fabricated for anterior teeth?

What is required before the dentist prepares the tooth for making a custom provisional?

What type of dental material would be selected when making a custom provisional?

What would the dentist select to trim or contour a stainless steel crown outside of the mouth?

When using a polycarbonate crown as a provisional, would the crown remain on the prepared tooth as the temporary, or act as a mold for the provisional?

Where is the acrylic resin extruded when preparing a provisional crown?

Provisional Coverage Overview

Custom provisional refers to temporary coverage created from a preliminary impression or thermoplastic tray, designed to replicate the prepared tooth.
Provisional is the term for temporary coverage to be worn during the cast preparation phase, specifically for single crowns or bridges.

Provisional Materials

Preformed denotes objects shaped beforehand to the required appearance, simplifying the provisional process.
Stainless steel crowns serve as a thin metal option for provisional coverage, primarily for primary molars.
Polycarbonate crowns are tooth-colored provisions commonly used for anterior teeth, offering aesthetic appeal.

Provisional Duration and Fabrication

Provisional coverage is typically worn by patients for 2 to 4 weeks until the final restoration is ready.
An expanded functions assistant is authorized to fabricate and temporarily cement a provisional in the dental office.

Custom Provisional Characteristics

The custom type of provisional provides the most natural appearance, tailored to fit the patient’s unique dental profile.
Preformed polycarbonate crowns can also be fabricated specifically for anterior teeth, combining convenience with aesthetics.

Preparation and Materials

A preliminary impression is essential before a dentist prepares the tooth for a custom provisional, ensuring accurate fit and design.
Acrylic resin is selected as the material for crafting a custom provisional due to its favorable properties.
A sandpaper disk is utilized by the dentist to trim or contour a stainless steel crown outside the patient’s mouth, promoting a precise fit.

Polycarbonate Crown Functionality

When a polycarbonate crown is used as a provisional, it remains on the prepared tooth and serves as a mold for the final restorative material.
The acrylic resin is extruded into the thermoplastic tray during the preparation of a provisional crown, ensuring proper shaping and fit.

This quiz covers the essential concepts of provisional coverage in dentistry, including materials, duration, and fabrication techniques. Learn about custom provisions, their characteristics, and the role of dental assistants in the process. Perfect for dental students and professionals seeking to refresh their knowledge.