Medterm Flashcards
For perfect evaluation of parallelism of preparation of multiple abutment teeth and their inclinations can be done: Select one:
c. On the cast, extra-orally
when preparing chamfer margin, if we enter with the bur deeper than half of the tip of the diamond bur it will
Lead to unsupported lip of enamel
In which conditions we prepare Supra gingival margins?
12 If the tooth is supra-erupted and needs t be prepared for the crown Select one.
a. We may need considerable reduction on occlusal surface
B. This may shorten axial wall height
c.Endodontic treatment may be necessary
Taper is:
The convergence of two opposite facing external walls of a crown preparation
Undercut is: Select one:
a. When cervical margin is narrow than incisal margin
How should we hold the dental handpiece while preparation of axial walls To prevent undercuts or excessive convergence? Select one
a. top surface of the turbine head should be kept parallel to the occlusal surface of the tooth
Which answer is wrong? Why it is so important to Prepare the teeth with the minimum practical convergence angle between axial walls? Select one:
a. Improves properties of artificial crown
Smooth preparation margins can affect on: Select one:
Longevity (durability ) of the final construction
While crown preparation, occlusal reduction should be Select ones
1-2mm
How we manage clinical case if we have Second Molar
tilded to much in medial direction?
Select one:
a. FDP is made after uprighting the tilted abutment
orthodontically
Construction, that relates the maxillary cast to the
opening and closing axis of the articulator in the same way that the maxilla relates to the anatomical hinge axis of the patient is
Facebow
Which answer is not correct - the contour of unprepared
tooth structure cervical to preparation margin is important ?
d. Dentist and lab tech must identify the contours of tooth
and also of prepared surfaces Includes prepared
structures of tooth
