Fig.9  Next

Dental Education Lecture: Treatment of Deformed Teeth

Approximately 1-2% of people have abnormally shaped teeth or do not have one to several teeth.  If this happens in the front, we need treatment.

Fig.1 shows six of front teeth (3 on each other) of a normal person: 1: central incisor, 2: lateral incisor, 3: canine (cuspid).  The lateral is slightly smaller than the central.

The lateral incisors most likely have problems: either too small (Fig.2) or do not develop at all (Fig.3).  In the second scenario, the canine teeth have moved forward to the position of the lateral incisors (Fig.3).  On one side, a baby canine tooth (c) does not fall out, treatment of which will be discussed in next lecture.  The small shaped lateral incisor can be corrected with white filling (composite, resin) veneer or porcelain veneer.

Let us look at the other side of the patient of Fig.3.  In Fig.4, the canine (3) is immediately next to the central (1).  There is a big gap behind the canine.  4 stands for the first premolar tooth.  The patient requests closing the gap.  To close the space, we plan to make a bridge.  We have to grind the teeth small on the either side of the space (Fig.5), particularly the shape of the canine changed to that of the lateral (3->2).  When we cement the bridge, that area looks pretty good (Fig.6).

Spencer does not have two laterals.  The canines move forward.  But there is no gap behind.  She does not like the pointed shape of the canines in the front (Fig.7).  So we are going to add white filling material to the either side of pointed tip of the canines (arrows in Fig.8).  The final result is what she expects (Fig.9).

In the next lecture, we are going to discuss another type of tooth make-over, just the opposite to the above: making a pointed tip of a canine tooth.  See you.

Xin Wei, DDS, PhD, MS 1st edition 01/15/2010, last revision 05/29/2016