Biomedical Engineering Reference
In-Depth Information
d
FIGURE 12.4
Diameter of round wires (d).
h
b
FIGURE 12.5
Rectangular wires' dimension base (b) and height (h).
FIGURE 12.6
Interbracket distance between the maxillary left canine and maxillary left lateral incisor (yellow line) is less
than that between maxillary left central incisor and maxillary left lateral incisor (blue line). The longer wire
segment is more flexible than the shorter one. (For interpretation of the references to color in this
figure legend, the reader is referred to the web version of this topic.)
teeth crown widths, resulting in variation in interbracket wire lengths, and consequently applying
different forces using the same type, shape, and size of wire. What complicates this process further
is that the moments applied to the teeth are the resultant of multiplication of the magnitude of force
times the perpendicular distance between the centers of resistance of the tooth to the line of action
of the applied force (
Figure 12.7
).
