Why Teeth Shift in Adulthood

Understanding the Causes and How to Maintain a Straight Smile

Many adults are surprised to notice that their teeth seem to have moved over time, even years after orthodontic treatment. Whether your teeth were naturally straight or professionally aligned with braces or clear aligners when you were younger, it’s common for some shifting to occur later in life.

At L&L Orthodontics, we frequently speak with patients who are concerned about changes in their smile or increasing crowding. Below, we explore the common causes of adult teeth movement and how orthodontic treatment can help.

1. The Ageing Process

As part of the natural ageing process, the structure of your jaw and facial bones changes over time. This can lead to a gradual shift in tooth position, particularly in the lower front teeth, which are more prone to crowding as we age.

2. Teeth Grinding and Clenching

Many adults grind or clench their teeth, often without realising it, especially while asleep. This pressure places significant strain on the teeth and jaw, contributing to unwanted movement and alignment issues.

3. Tooth Loss

When a tooth is lost or extracted and not replaced, adjacent teeth may begin to move into the space. This can result in changes to your bite and overall alignment, especially if left unaddressed over time.

4. Gum Disease

Advanced gum disease affects the supporting structures of the teeth, including the bone and connective tissues. As these foundations weaken, teeth may become loose or begin to shift from their original positions.

5. Everyday Habits

Small, repeated behaviours such as nail-biting, chewing on objects, or sleeping consistently on one side of your face can apply uneven pressure on the teeth and contribute to gradual movement.

6. Not Wearing Your Retainer

Retainers are a vital part of maintaining results after orthodontic treatment. If retainers are not worn as directed, particularly in the years following treatment, teeth can relapse and return to their previous alignment. Remember to wear your retainers after orthodontic treatment.

What Are Your Options?

If you’ve noticed changes in your smile, you’re not alone, and treatments are available. At L&L Orthodontics, we provide tailored treatment options for adult patients, including clear aligners and fully customised LightForce 3D braces.

Whether your tooth movement is minor or more advanced, our Specialist Orthodontists can assess your bite, identify the underlying cause, and develop a treatment plan to realign your smile comfortably and efficiently. Book a consultation today.