a bibeveled or single beveled cutting dental instrument having its cutting edge in line with the axis of its blade; used
for breaking down tooth structures undermined by caries
, for smoothing cavity walls, and for sharpening line and point angles.
What is GMT in dentistry?
Gingival Marginal Trimmer
(GMT)
What is a gingival margin trimmer?
Margin trimmers, also known as gingival margin trimmers, are
restorative cutting instruments used to cut enamel and produce a bevel on enamel margins
. These dental instruments have slightly curved blades with sharp beveled cutting edges to provide mesial or distal access into the preparation.
What is the purpose of hand cutting instruments during a cavity preparation?
Used
to cut the enamel margin of the tooth preparation
, form sharp lines, point angles, and place retention grooves.
What is dental instrument bevel?
Each blade has a cutting edge which is the working part of the instrument. It is usually in the form of a bevel (
acute angle
) that cuts into the tooth structure. On non cutting instruments e.g. condensers the part corresponding to the blade is called the nib or face.
What is a dental hoe?
Hoes and chisels are often overlooked in the general practice. The hoe can be very useful to
remove large ledges of calculus and stain
from supra-gingival areas on the facial and lingual surfaces (Figure 48). The hoe is used with a pull stroke. The blade is straight, and the toe has a 45o bevel.
Which handpiece is available in speeds between 10000 and 30000 rpm?
| What is the definition of the term Mandrel? A metal shaft on which a sandpaper disc or abrasive material is mounted | The low speed handpiece is available in speed ranging from 10,000 RPM to: 30,000 RPM | Which handpiece is used by the dentist in every Restorative procedure? High speed handpiece |
|---|
What does a spoon excavator do?
Spoon-excavator meaning
A curette with
hooklike ends used to remove soft carious decay in dentistry
.
When should a preset sterile tray be taken to the treatment area?
A dental practice will have sufficient types of cassettes for most common procedures to allow adequate sterilization and preparation time before the tray is needed. Sterile trays or cassettes are taken into the treatment area as
part of the advanced preparation of the treatment room before the patient is seated
.
What instrument is used to place and remove items from the oral cavity?
| Instrument Use | ScissorsStraight (A); curved (B) Used for cutting, shaping, and trimming items in the dental procedure | 110 pliers Carry, place, and remove items in the mouth | Matrix retainer (A) and band (B) Provides an artificial wall around the tooth for placing dental materials in posterior teeth |
|---|
What is the area called between a multi rooted tooth?
| Term how to divide the teeth into thirds Definition [image] | Term what is the furcation on a three-rooted tooth called? Definition trifurcation | Term what is the region or space between two or more roots, apical to the place where the roots divide from the root trunk? Definition furcal region /interradicular space |
|---|
Which type of teeth is least in mouth?
The last molars to erupt are
wisdom teeth
, or third molars, which usually come through between the ages of 17–21. These sit at the end of the row of teeth, in the far corners of the jaw. Some people do not have all four wisdom teeth, or the teeth may stay unerupted in the bone and never appear in the mouth.
What are the three parts of a dental instrument?
Each hand instrument is composed of three parts:
the handle, the shank, and the blade
.
What is the ball burnisher used for?
Burnishers are dental hand instruments, normally used at the end of dental restoration procedures or operations. They are used for
polishing and contouring amalgam fillings and to polish composite fillings
. It is a process to emphasize grooves and to shave off surplus fins.
