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Periodontics II
Test Three
Question | Answer |
---|---|
Dental restorations play a significant role in maintaining oral health. | True |
Any trauma from occlusion should be eliminated prior to beginning restorative procedures. | True |
A hard acrylic biteguard should be fabricated for all patients with parafunctional habits. | True |
Temporary restorations should have the same fit and contour as the final restorations. | True |
Stainless steel crowns are not intended for use as permanent restorations in the permanent dentition. | True |
It is essential that margins of dental restorations be kept supra- gingival whenever possible. | True |
Gingival and periodontal disease must be eliminated before restorative procedures are begun | True |
Which of the following is true regarding overhanging margins of restorations? A) Can result in gingival bleeding, increased pocket depth, and bone loss B) May result in recurrent caries C) All of the above D) A contributin factor in perio disease | All of the above |
Long-term temporary restorations A) are called provisional restorations B) may remain in place for weeks C) should have the same fit, contour, occlusion, and margins as the permanent restoration D) all of the above | all of the above |
The finishing and polishing of amalgams is indicated for which circumstances? | surface irregularities |
A restoration that is used when one or more cusps of a tooth are in need of replacement, but a full crown is not indicated is a/an | onlay |
replacement of missing tooth structure, teeth, or oral tissues | restoration |
modifying the occlusal surfaces of the teeth in order to evenly distribute the stress of occlusal forces | equilibration |
approximately 1-2 mm necessary between the apical margin of the restoration and the junctional epithelium and underlying connective tissue fibers | biologic width |
the cellular or tissue response to a material | biocompatibility |
fabrication of the restoration within the confines of the cavity preparation itself | direct restoration |
fabrication of the restoration outside of the mouth, and later placed on/in the tooth | indirect restoration |
When evaluating restorative work there are 4 factors which affect the tooth/tissue relationship | morphology, contour, margins, biocompatibility of materials |
The sequence of therapy is to place temporaries, partial and crowns then remove hopeless teeth | False |
Periodontal disease remains the most frequent reason for loss of tooth structure, and affects the majority of the population | False |
a broad term applied to any material or prosthesis that restores or replaces lost tooth structure, teeth, or oral tissues | restoration |
outside or external to the crown portion of a natural tooth: includes "veneers" | extracoronal restorations |
located "within the confines of the cusps" and normal proximal axial contour | intracoronal restorations |
fabricated "within" the confines of the preparation: typically composed of materials that harden or polymerize after placement in the preparation | direct restorations |
the removal of caries-altered tooth structure to render it capable of receiving a dental restoration | cavity preparation |
those which are "formed partially or wholly outside" the tooth preparation, often from an impression and subsequent cast of the preparation | indirect restorations |
imperfect interface between the margin of a restoration and the tooth | microleakage |
The material with the best marginal quality and lowest microleakage of those not bonded to the teeth is | Gold |
Overdentures can only be placed over implants, not natural teeth | False |
Primary occlusal trauma is normal forces on a healthy periodontium, Secondary occlusal trauma is normal or abnormal forces on already compromised periodontium | The first statement is false and the second statement is true |