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

Figure 10 Mandibular movements.
Figure 10-a Due to wear on the canine tip, there are multiple
tooth contacts on the right chewing side and harmful contacts
on the left nonchewing side during the right chewing movement.
Figure 10-b Incisive movement indicates
multiple contacts on the posterior teeth.
Figure 10-c Due to wear on the canine tip, there are multiple
tooth contacts on the left chewing side and harmful contacts on
the right nonchewing side during the left chewing movement.
64 Linton, Jung | The Effect of Tooth Wear on Postorthodontic Pain Patients: Part 2
The patient’s records were reviewed to compare the
amount of tooth wear at age 15 immediately after orthodontic
treatment (December 2002) with the amount of tooth
wear at age 20 (Figure 11).
Figure 11 Comparison of tooth wear over a 5-year period.
Progression of tooth wear from 1.5 mm of vertical overbite
in the upper and lower canines in December 2002 down to
minimum vertical overbite in April 2008.
(Red arrows indicate flattened anterior teeth.)
The canine tips already showed wear at age 15. Progression
of tooth wear was evident; 1.5 mm of vertical overbite in
the upper and lower canines in December 2002 was reduced
down to minimum vertical overbite in April 2008. The occlusal
views showed the beginning of dentin exposure on the
upper lateral incisors and the canines. The first molar wear
caused no obvious incisal changes but the progression of the
wear was definitely observable as wider wear facets and dimples
on the molar cusp tips in April 2008 (Figure 12).
Figure 12 Occlusal views of tooth wear. Wear on the posterior
teeth is less apparent than wear on the anterior teeth. On close
examination, tooth wear (red arrows) is shown as facets or
dimples on the cusp tips.