Page 34 - My FlipBook

: :
:
::

10 THE TECHNICAL PROCEDUEES IN FILLING TEETH.

Rule: All angles of cavities are named by combining the
names of the walls joining to form the angle. The particular
order in ivhich these are named is not important. Linguo-distal
angle and disto-lingual angle mean the same thing.
Illustrations : (Each angle named is formed by the junction
of the walls, the names of which enter into the name of the angle.)
Occlusal cavities have —
First set of line angles
A mesio-buccal angle,
A mesio-lingual angle,
A disto-buccal angle,
A disto-lingual angle.
Second set of line angles
A bucco-pulpal angle,
A linguo-pulpal angle,
A mesio-pulpal angle,
A disto-pulpal angle.
Point angles
A mesio-bucco-pulpal angle,
A disto-bucco-pulpal angle,
A mesio-linguo-puli^al angle,
A disto-linguo-pulpal angle.
In case the pulp is removed, the pulpal wall is removed
and the floor of the pulp chamber becomes the sub-pulpal wall
of the cavity, and the pulpal angles become sub-pulpal angles.
A buccal or a lingual cavity in molars or bicuspids has —
First set of line angles:
A mesio-gingival angle,
A disto-gingival angle,
A mesio-occlusal angle,
A disto-occlusal angle.
Second set of line angles
An axio-gingival angle.
An axio-mesial angle,
An axio-occlusal angle,
An axio-distal angle.
Point angles
An axio-mesio-gingival angle,
An axio-mesio-occlusal angle,
An axio-disto-occlusal angle.
An axio-disto-gingival angle.
A simple mesial or distal cavity in a bicuspid or molar
has —