Cross elastics are orthodontic tools that can correct different types of malocclusions, which are dental misalignments that can affect how a person’s teeth and jaw function. Orthodontists often recommend these elastics as a non-invasive way to help fix various bite problems.

Here’s when to use cross elastics for three specific types of malocclusions: Brody, scissor, and posterior crossbite.

Brody Bite

A brody bite is a type of dental misalignment where a person’s upper teeth are too narrow or constricted, causing them to bite down on the wrong areas of the lower teeth. This can lead to tooth wear and tear, gum damage, and other problems. Cross elastics can help correct this by applying pressure on the upper teeth, widening them, and allowing for a more even bite. The elastics are attached to hooks on the upper teeth and then stretched to hooks on the lower teeth, creating a force that will gradually move the teeth into the correct position.

Scissor Bite

A scissor bite is another type of malocclusion where the upper teeth overlap the lower teeth in a crosswise pattern. This can cause problems with chewing, speaking, and aesthetic concerns. Cross elastics can be used to correct this by applying force to the upper teeth, pulling them forward and down while pushing the lower teeth back and up. This will gradually bring the teeth into the correct position and help improve the patient’s bite.

Posterior Crossbite

A posterior crossbite occurs when the upper teeth are positioned inside the lower teeth when biting down. This can lead to problems with tooth wear and tear, speech difficulties, and other issues. Cross elastics can be used to correct this by applying pressure to the upper teeth and pulling them outwards while pushing the lower teeth inwards. This will gradually bring the teeth into the correct position and help improve the patient’s bite.

Conclusion

Cross elastics can be an effective tool for correcting malocclusions, but it’s important to be aware of the different types and not rush into placing them. For Brody cases, it’s crucial to determine if it’s a dental or skeletal crossbite, and for posterior crossbites, it’s best to leave them alone if skeletal expansion isn’t possible. Coordinating wires can help fix dental crossbites, but always be cautious when selecting cases and integrating the bite gradually. Remember, cross elastics should only be used towards the end of treatment, and if the bones won’t fit together, it’s best to leave the issue. By carefully considering these factors, orthodontists can achieve optimal results for their patients.