**Simply touching your gums with your fingers is unlikely to explain severely crooked teeth.** Prolonged thumb or finger *sucking*, or sustained pressure against teeth, can affect their position; occasional touching is different. Dental guidance emphasizes how long and how often pressure acts. Your childhood habit alone does not establish the cause. [AAPD guidance](https://www.aapd.org/globalassets/media/policies_guidelines/bp_developdentition25.pdf)

Crooked teeth can develop for several reasons:

- **Inherited traits and insufficient space:** Teeth may be too large for the available jaw space, causing overlap or rotation. Jaw growth and bite patterns can also run in families. Your mother’s similar teeth make an inherited contribution plausible, although that cannot be confirmed from family history alone. [American Association of Orthodontists](https://aaoinfo.org/whats-trending/is-there-a-benefit-to-early-treatment/), [explanation of crowding](https://aaoinfo.org/whats-trending/7-common-bite-problems/)
- **Development and tooth loss:** Extra, missing or unusually positioned teeth, eruption problems, and premature loss of baby teeth can interfere with alignment. [AAPD guidance](https://www.aapd.org/globalassets/media/policies_guidelines/bp_developdentition25.pdf)
- **Persistent oral habits:** Prolonged thumb/finger sucking and pacifier use are associated particularly with front teeth that do not meet and crossbites. Their effects depend on duration, frequency and intensity. [AAPD guidance](https://www.aapd.org/globalassets/media/policies_guidelines/bp_developdentition25.pdf)

**Prevention can reduce some risks, but cannot guarantee straight teeth.** For children, useful measures are:

1. Establish dental care by the first birthday so development, decay and habits can be monitored.
2. Gently help children stop thumb/finger sucking and pacifier habits by about age three, using encouragement rather than punishment. [AAPD recommendations](https://www.aapd.org/research/oral-health-policies--recommendations/p_pacifiers.pdf/)
3. Protect baby teeth from decay and obtain dental advice if one is lost early; some children need an appliance to preserve space for the permanent tooth. [AAPD guidance](https://www.aapd.org/globalassets/media/policies_guidelines/bp_developdentition25.pdf)
4. Arrange an orthodontic assessment by age seven, or sooner if a dentist identifies a concern. An assessment does **not** automatically mean starting braces. [AAO guidance](https://aaoinfo.org/whats-trending/is-there-a-benefit-to-early-treatment/)

Two other common misconceptions are that good brushing alone prevents crowding, and that straightened teeth stay straight permanently. Brushing protects dental health but cannot correct inadequate space; after orthodontic treatment, retainers help prevent teeth from shifting again. [AAO guidance on crowding](https://aaoinfo.org/whats-trending/7-common-bite-problems/), [retainers](https://aaoinfo.org/whats-trending/will-i-need-to-wear-retainers/)

If your teeth remain crooked, a dentist or orthodontist can assess the crowding and bite and discuss whether treatment would help. There is no sound basis, from what you describe, to blame yourself for touching your gums.