Supernumerary Roots

Similar to supernumerary teeth, an extra root or several more can develop beyond the normal number of root(s) typical for the specific tooth type (Figures 51-53). Whether primary or permanent, any tooth can form an accessory root.⁵ Third molars are especially prone to supernumerary roots, but the other molars from either arch may be involved as well as mandibular canine and premolar teeth.^5,10 At times, the extra root is easily seen radiographically while in other instances it may be fused to the other root(s) or so small as not to be visible.^5,10 Although not typically a problem, the extra root may present a challenge if endodontic treatment or extraction is indicated.^5,10

Figure 51.

Figure 51.

Periapical radiograph of a supernumerary tooth root on mandibular right first molar, #30

Figure 52.

Figure 52.

Periapical radiograph of a supernumerary root on mandibular left canine tooth #22.

Figure 53.

Figure 53.

Cropped panoramic radiograph showing supernumerary roots on the mandibular premolar teeth, #21 and #28.