Miniature Dachshund Malocclusion

Andouille, a 6 month old miniature Dachsund visited Veterinary Dental Specialties and Oral Surgery as his permanent canines were erupting. His owner, a veterinary student, and his veterinarian noticed that his left maxillary canine (204) was pointing too much towards his nose, and contacting his lower canine (304), causing discomfort and preventing a normal bite. We decided to move the forward directed canine tooth into a more normal position with an orthodontic elastic band between the canine and the large premolar and molar in the back of the mouth, which we anchored together with wire and acrylic.

When we got Andouille under anesthesia and took dental radiographs, we found another problem: he had THREE canine teeth in his lower jaw! The extra canine tooth on the left side was likely affecting normal eruption of the lower canine and may have been contributing to the malocclusion in the upper canine. The supernumary canine tooth was surgically extracted and the orthodontic appliance placed on the upper teeth.

The appliance was checked, and the band tightened at regular intervals. Once the proper occlusion was achieved, the appliance was to be left in place for approximately 6 weeks to make sure the teeth remained in their proper places. Andouille broke his band a bit early, but the desired dental interlock between the upper and lower canine teeth ensured proper retention of the now normal bite.

Preoperative photograph of “lance” (mesioversed) left maxillary canine (204).

Preoperative photograph of “lance” (mesioversed) left maxillary canine (204).

 

Intraoral radiograph of mandibular incisors and canines, demonstrating the supernumerary left mandibular canine (SN304). Note that the more normal 304 is not erupted to the same extent as the left mandibular canine (404), likely because of the presence of the extra tooth.

Intraoral radiograph of mandibular incisors and canines, demonstrating the supernumerary left mandibular canine (SN304). Note that the more normal 304 is not erupted to the same extent as the left mandibular canine (404), likely because of the presence of the extra tooth.

 

Postoperative intraoral photograph with the elastic band in place, anchored to the fourth premolar (208) and first molar (209), extending to the tip of the canine (204)

Postoperative intraoral photograph with the elastic band in place, anchored to the fourth premolar (208) and first molar (209), extending to the tip of the canine (204)

Corrected occlusion after orthodontic treatment

Corrected occlusion after orthodontic treatment