American Board of Orthodontics (ABO) Practice Exam 2026 - Free Orthodontics Practice Questions and Study Guide

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In terms of canine substitution in patients missing upper laterals, what is considered ideal?

Large canines with matching shade

Small canines with matching shade

The ideal choice for canine substitution in patients missing upper laterals is small canines with matching shade. This is because small canines are more favorable in terms of esthetics, making them appear more natural when replacing the laterals. The size of the canine is critical; larger canines can disrupt the overall proportions of the dentition and facial aesthetics, especially in the anterior region where the missing laterals are located.

Additionally, matching the shade of the canines to the adjacent teeth is crucial for achieving a harmonious and natural look. This helps blend the substitution with the existing dentition, minimizing the visual discrepancy and ensuring a well-integrated smile. Therefore, small canines that match the shade of the surrounding teeth perfectly maintain the ideal balance in both size and color, leading to the most aesthetically pleasing outcome for the patient.

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Any canine regardless of shade

Canines with a different shade

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