American Board of Orthodontics (ABO) Practice Exam

When considering the primary concern in handling the buccal corridor in orthodontics, the emphasis is often placed on the anteroposterior (AP) position of the maxilla. The buccal corridor refers to the space between the maxillary posterior teeth and the corners of the mouth when smiling. The appearance of this space plays a significant role in the overall facial aesthetics and smile design.

Ensuring the proper AP position of the maxilla is crucial because it directly affects how wide or narrow the buccal corridor appears. An optimal AP position helps create a balanced smile that harmonizes with the rest of the facial features, enhancing overall dental and facial aesthetics. Inadequate positioning could lead to a smile that appears too narrow or too broad, negatively impacting both function and aesthetics.

While factors such as teeth alignment, facial symmetry, and cultural perceptions of aesthetics are important in orthodontics, the influence of the maxillary position on the buccal corridor is fundamental in achieving an aesthetically pleasing smile that complements facial structure. The positioning of the maxilla can guide the orthodontist in determining how to best manage the buccal corridor, making this consideration central to treatment planning.