Enamel cracks in debonded, debanded, and orthodontically untreated teeth

Area of Science:

• Dental Research
• Orthodontics
• Enamel Integrity

Background:

• Enamel cracks are a potential concern during orthodontic treatment.
• Understanding crack prevalence and characteristics is crucial for clinical practice.

Purpose of the Study:

• To assess the prevalence, localization, expression, and direction of enamel cracks.
• To compare enamel cracks in debonded, debanded, and untreated teeth in adolescents.

Main Methods:

• Fiber-optic transillumination was used for clinical assessment.
• Three groups of adolescent teeth were examined: debonded, debanded, and orthodontically untreated.

Main Results:

• Enamel cracks are highly prevalent across all groups.
• Most cracks are subtle and vertical, often located in the gingival two-thirds of facial surfaces.
• Marked cracks predominantly affect maxillary canines and central incisors.

Conclusions:

• Enamel crack prevalence is high and not significantly increased by careful bonding/debonding.
• Pronounced cracks may necessitate re-evaluation of bonding/debonding techniques.
• Informing patients about existing cracks before treatment is advisable.