2010 RWISO Journal - Roth Williams International Society of ...

Figure 4 Slight attrition occurred during orthodontic treatment.
Case 5: No Attrition Occurred During or Following
Orthodontic Treatment
A 24-year-old female came in for treatment of bimaxillary
dentoalveolar protrusion (June 1998). The canine tip remained
the same immediately after orthodontic treatment
(April 2001) and 7 years posttreatment (April 2008). This patient
had no apparent anterior tooth attrition over the 10-year
observation period (Figure 5). On lateral excursive movement,
canine guidance existed with adequate separation of posterior
teeth on both the chewing and the nonchewing sides.
Figure 5 No attrition occurred during or after orthodontic treatment.
Case 6: Attrition Occurred During Orthodontic Treatment
A 13-year-old male came to the clinic in January 2000 for
treatment of protruding upper incisors. The patient’s face
showed a protrusive upper lip and a normal-size mandible,
with no apparent asymmetry. He had class II malocclusion
with maxillary dentoalveolar protrusion, severe crowding
in the upper and lower arches, and a constricted maxillary
arch. The upper right canine had not erupted due to lack of
space, even though the root had almost formed (Figure 6).
Figure 6 Preorthodontic treatment photographs and x-rays.
Figure 6-a Front facial
smiling photograph.
Figure 6-b Lateral facial
photograph showing lip
protrusion and strained
mentalis muscle.
Figure 6-c Right lateral intraoral photograph
showing class II molar relationship in MIP.
Figure 6-d Front intraoral photograph in MIP showing
crowding and crossbite in the upper right lateral incisor.
RWISO Journal | September 2010
59