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102 PRELIMINARY TECHNICAL PROCEDURES
separation, and that original contours are restored and ideal
contact points built. Nature does not always produce ideal
forms, consequently it is frequently possible for the dentist
to improve on nature in this regard.
Failure to properly restore inter-proximal contours and
contact points is a very frequent cause of gingivitis and
pyorrhea alveolaris, as a result of the packing of food masses
into the spaces, these masses either acting as mechanical
irritants, or later fermenting or putrefying, with resultant
chemical and bacteriological irritation to the highly sensitive
and delicate gum septum.
Dr. G. V. Black has given five reasons for maintenance of
normal V-shaped inter-proximal spaces, as follows
(i) For conservation of healthy gum tissue.
(2) To prevent inpaction of food.
(3) To enable patients to most readily accomplish the
cleansing operation.
To insure permanence of fillings.
(4)
For esthetic appearance.
(5)
Separation of the teeth is a much more important pro-
cedure than it would appear to be on first thought. It is
occasionally necessary for proper examination of interproximal
spaces. Tn the majority of instances, this may be readily
accomplished by means of the rapid separator. It is necessary
for proper restoration of anatomical contours and normal con-
tact points in fillings and also for preservation of healthy
inter-proximal gum tissue.
There are two general methods of producing separation,
one of which is known as slow or previous and the other as
rapid or immediate. Each of these methods has its advocates
and the two are often combined under special circumstances.
The advantages and disadvantages of the slow method are
as follows, viz.
102 PRELIMINARY TECHNICAL PROCEDURES
separation, and that original contours are restored and ideal
contact points built. Nature does not always produce ideal
forms, consequently it is frequently possible for the dentist
to improve on nature in this regard.
Failure to properly restore inter-proximal contours and
contact points is a very frequent cause of gingivitis and
pyorrhea alveolaris, as a result of the packing of food masses
into the spaces, these masses either acting as mechanical
irritants, or later fermenting or putrefying, with resultant
chemical and bacteriological irritation to the highly sensitive
and delicate gum septum.
Dr. G. V. Black has given five reasons for maintenance of
normal V-shaped inter-proximal spaces, as follows
(i) For conservation of healthy gum tissue.
(2) To prevent inpaction of food.
(3) To enable patients to most readily accomplish the
cleansing operation.
To insure permanence of fillings.
(4)
For esthetic appearance.
(5)
Separation of the teeth is a much more important pro-
cedure than it would appear to be on first thought. It is
occasionally necessary for proper examination of interproximal
spaces. Tn the majority of instances, this may be readily
accomplished by means of the rapid separator. It is necessary
for proper restoration of anatomical contours and normal con-
tact points in fillings and also for preservation of healthy
inter-proximal gum tissue.
There are two general methods of producing separation,
one of which is known as slow or previous and the other as
rapid or immediate. Each of these methods has its advocates
and the two are often combined under special circumstances.
The advantages and disadvantages of the slow method are
as follows, viz.
