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What does vertical overbite refer to?

  1. The horizontal overlap of cusp tips

  2. The vertical overlap of the incisal edges of anterior teeth

  3. The spacing between molars

  4. The alignment of the dental arches

The correct answer is: The vertical overlap of the incisal edges of anterior teeth

Vertical overbite specifically refers to the vertical overlap between the incisal edges of the upper and lower anterior teeth. In a healthy occlusion, the upper incisors naturally overlap the lower incisors vertically to a certain degree, which is measured in millimeters. This parameter is crucial for evaluating how well the upper and lower teeth align during functional movements such as chewing and speaking. A proper vertical overbite ensures that the anterior teeth function effectively while protecting the posterior teeth and maintaining the overall harmony and aesthetics of the smile. Too much vertical overlap (deep overbite) or too little (open bite) can lead to complications or discomfort, thus underscoring the importance of assessing this measurement during orthodontic examinations.