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o METHODS OF FILLING TEETH.
3
to make wider than
upon the root, it is necessary spaces ordinary
between the hole in the dam which is to encircle the particular tooth
and those on either side of it. If this precaution is not taken, when
is used, and the dam forced above the the
the clamp up cavity edge,
rubber on each side will have stretched so that the gum between the
teeth will not be covered, and an annoying leak will ensue. A little
teaches one how to the in these cases.
practice easily regulate spacing
In connection with festoon cavities, the gum may be forced back and
away from the edge of the cavity in either of two ways. If it can be
so that it will have a to slide under the a
placed tendency gum, ring
cut from rubber tubing may be placed to encircle the neck, and allowed
to remain in position for twenty-four hours. In this time it will be
found to have forced the gum slightly back, and also by forming a
space between the gum and tooth the free margin is left less resistant
to made by the clamp. Where the rubber would have
pressure ring
a tendency to slip down toward the incisive edge, it cannot be used.
In these cases a roll of cotton should be wrapped around the neck and
forced under the gum as far as possible. A ligature of flax thread
below it will hold it in and in one the of
tied just place, day swelling
the cotton will have accomplished the purpose. Either of these
methods is less cruel than an attempt to force the gum up by use of a
clamp.
Where a mouth is small, or the lips non-yielding, considerable diffi-
culty may be found in placing the dam over posterior teeth. If the
operator has an assistant, his aid is invaluable in placing the clamp,
but in lieu of such help the patient may be made to do service.
Suppose that the tooth be in the lower jaw ; the operator with the
second finger of his left hand can readily keep the dam from sliding
up along the buccal side of the tooth. Momentarily he has the
second finger of his right hand at the lingual side. Now let him say
' '
to the Pass the second of hand down
patient, finger your right
till you feel my finger-nail, then press against your gum, and hold
steadily." Now the operator may remove his right hand, and is at
liberty to place the clamp. The aid of the patient judiciously applied
is as useful to the dentist, and more to the
frequently satisfactory
patient, than the help of a third person. In the upper jaw, however,
the cannot assist so He will his hand in some
patient easily. get
awkward position, which interferes with a clear view of the work.
Having placed the dam, using both hands, the second finger of the
left hand along the buccal side, that hand may be turned so that the
palm is uppermost. In this position, and without moving the second
finger, the forefinger may be passed into the mouth and made to take
the of the of the right hand, which has been
place finger resting
the The dam is thus held with the of one
against palate. fingers
3
to make wider than
upon the root, it is necessary spaces ordinary
between the hole in the dam which is to encircle the particular tooth
and those on either side of it. If this precaution is not taken, when
is used, and the dam forced above the the
the clamp up cavity edge,
rubber on each side will have stretched so that the gum between the
teeth will not be covered, and an annoying leak will ensue. A little
teaches one how to the in these cases.
practice easily regulate spacing
In connection with festoon cavities, the gum may be forced back and
away from the edge of the cavity in either of two ways. If it can be
so that it will have a to slide under the a
placed tendency gum, ring
cut from rubber tubing may be placed to encircle the neck, and allowed
to remain in position for twenty-four hours. In this time it will be
found to have forced the gum slightly back, and also by forming a
space between the gum and tooth the free margin is left less resistant
to made by the clamp. Where the rubber would have
pressure ring
a tendency to slip down toward the incisive edge, it cannot be used.
In these cases a roll of cotton should be wrapped around the neck and
forced under the gum as far as possible. A ligature of flax thread
below it will hold it in and in one the of
tied just place, day swelling
the cotton will have accomplished the purpose. Either of these
methods is less cruel than an attempt to force the gum up by use of a
clamp.
Where a mouth is small, or the lips non-yielding, considerable diffi-
culty may be found in placing the dam over posterior teeth. If the
operator has an assistant, his aid is invaluable in placing the clamp,
but in lieu of such help the patient may be made to do service.
Suppose that the tooth be in the lower jaw ; the operator with the
second finger of his left hand can readily keep the dam from sliding
up along the buccal side of the tooth. Momentarily he has the
second finger of his right hand at the lingual side. Now let him say
' '
to the Pass the second of hand down
patient, finger your right
till you feel my finger-nail, then press against your gum, and hold
steadily." Now the operator may remove his right hand, and is at
liberty to place the clamp. The aid of the patient judiciously applied
is as useful to the dentist, and more to the
frequently satisfactory
patient, than the help of a third person. In the upper jaw, however,
the cannot assist so He will his hand in some
patient easily. get
awkward position, which interferes with a clear view of the work.
Having placed the dam, using both hands, the second finger of the
left hand along the buccal side, that hand may be turned so that the
palm is uppermost. In this position, and without moving the second
finger, the forefinger may be passed into the mouth and made to take
the of the of the right hand, which has been
place finger resting
the The dam is thus held with the of one
against palate. fingers
