Chapter 7 - Rubber Dam Flashcards
the __ of operating field isolation are moisture control, retraction, and harm prevention
goals
- a dry lean field
- improved access/visibility
- potentially improved properties of dental material
- protect to patient and dr.
- operating efficiency
advantages of rubber dam iso
the rubber dam __ consists of 4 prongs and two jaws connected by a bow
retainer
The __ is used to anchor the dam to the most posterior tooth to be isolated
also used to retract gingival tissue
retainer
retainers belong to which tooth: W56 W7 W8 W4 W2 W27
W57-most molar anchor teeth
W7-mandibular molar anchor
W8-maxillary molar anchor
W4-most premolar anchor
W2-small premolar anchor
W27-terminal mandibular molar anchor teeth requiring preparations involving the distal surface
another name for retainer
clamp
The ___ are designed to provide extra retraction of the
rubber dam from the operating field and to allow attachment
of the dam to the retainer before conveying the retainer (with
dam) to the anchor tooth
wings of retainer
proximal cavorsurface margin to axial wall
axial depth
how do we measure axial wall depth
hatchet width
occlusal cavosurface margin to gingival floor
pulpal depth
basic 6 principles of cavity preparation
- outline form
- resistance form
- retention form
- convenience form
- finishing
- debridement
the shape of the cavity prep
perimeter of the tooth prep in width, length, and depth
outline form
factors governing __ form;
~conservation of tooth structure
~location and extent of carious lesion
~position of pit and fissure
outline form
__ form allows the remaining tooth structure and the restoration to withstand forces that are principally directed towards the long axis of the tooth
resistance form
__ form prevents dislodgement of the restoration by uplifting or tipping forces
retention form
__ form allows sufficient access to the cavity to facilitate visibility and instrumentation of the cavity prep and the insertion of the restorative material
convenience form
__ form is to achieve the best marginal seal, the cavorsurface margin to prevent jagged or rough outline
finishing form
__ form is rinsing the cavity with air/water syringe and high suction evacuation
debridement
free the cavity from moisture (1/6 of the principles of cavity prep)
debridement
when the cutting edge and the blade are not 90 degrees
use 4 naming code
when cutting edge and the blade are at 90 degree
use 3 naming code
winged retainer or __ retainer
anterior
wingless retainer will have the letter __ to it, circled in __
W circled in red
__ retainers don’t have a letter W designated to them
wing retainers
