You searched for: “malocclusions”
malocclusion (mal" uh KLOO zhuhn) (s) (noun), malocclusions (pl)
Faulty alignment of the teeth: Eugene's neighbor had to wear a retainer to overcome the malocclusions of her teeth so she could chew her food properly.

The antonym for malocclusion is the rarely used term of "benocclusion" or "good alignments of the teeth.

Word Entries at Get Words: “malocclusions”
malocclusion (s) (noun), malocclusions (pl)
An abnormality in the way the a dog's teeth come together: A malocclusion is a misalignment of the lower and upper sets of teeth.
This entry is located in the following unit: Dog or Canine Terms + (page 7)