FULL MOUTH PERIAPICAL
Figure 1-59 shows a full mouth periapical film
mount. The mount contains 14 slots for periapical
radiographs and 2 slots for interproximal (bite-wing)
W h e n m o u n t i n g f u l l m o u t h p e r i a p i c a l
radiographs, you will be working with 14 radiographs;
take care to sort and mount them correctly. To do this,
you must be able to recognize certain maxillary and
mandibular anatomical landmarks.
the teeth (B in fig. 1-60). The wavy white line identifies
the floor of the maxillary sinus. This white line is not
found in radiographs of the mandibular arch.
Mandibular Cuspid and Bicuspid
Radiographs of these areas show a fine network of
tiny white lines around and below the roots and a dark
area in the cuspid area representing the mental foramen
(E in fig. 1-60).
Maxillary Molar Area
During the following discussion, locate each
anatomical landmark on figure 1-60. The landmarks
are indicated by arrows.
Maxillary Incisor Area
Radiographs of this area usually show a large
white region caused by the bone of the nasal septum (A
in fig. 1-60).
Mandibular Incisor Area
Mandibular incisors are smaller than maxillary
incisors. The mandibular incisor area has a network of tiny
white lines around and below the roots (D in fig. 1-60).
Maxillary Cuspid and Bicuspid Areas
Radiographs of these areas usually show a
distinct wavy white line above or near the apices of
Radiographs of these areas show the maxillary
arch and the roots of the maxillary molars curving
slightly toward the rear of the mouth (C in fig. 1-60).
Maxillary molars have three roots, they tend to be
indistinct on radiographs. In addition, the radiographs
will usually show a distinct wavy white line above or
near the apexes of the teeth.
Mandibular Molar Area
Mandibular molars show two roots that are
distinct on radiographs. The mandibular nerve
canal frequently shows as a dark, narrow band
running horizontally under the apexes of the
mandibular molars. The mandibular arch and the
roots of the molars curve slightly toward the rear of
the mouth. An impacted third molar will often be
present on radiographs of the mandibular molar
areas (F in fig. 1-60).
Figure 1-59.Full mouth periapical mount.