National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Closure of a 2mm midline diastema by orthodontics is best accomplished at which stage?

Immediately after the eruption of lateral incisors
After complete eruption of maxillary canines
Before the eruption of premolars
After the teenage growth spurt

The correct answer is: After complete eruption of maxillary canines

Closing a gap between teeth, also known as a diastema, can be achieved through orthodontic treatment. However, in order to achieve the best results, it is important to time the treatment correctly. Option A may not be the best choice as lateral incisors usually erupt before the development of a diastema. Option C may also not be ideal as it may delay the natural closure of the gap by the eruption of premolars. Option D may not be the most efficient as it is after the peak of the teenage growth spurt and the jawbones have already reached their maximum size. Option B, after the complete eruption of maxillary canines, is the best stage for closure of a 2mm midline diastema as this is when most of the permanent teeth have grown in and the jawbones have reached their full size, allowing for more precise and stable results.