The gap between the teeth becomes larger after cleaning. Generally speaking, the gap between the teeth is not caused by the cleaning, but the gap between the teeth is originally due to the presence of tartar, which causes the gums to shrink. Usually, because the calculus is in the gap between the teeth, it is not felt that the gap between the teeth becomes larger. When the calculus is removed after cleaning the teeth, the gap between the teeth will naturally become larger. Normally, there should be gingival papilla filling between the teeth. When there is dental calculus, it will cause gingival recession. In this case, it is necessary to remove the dental plaque and calculus in time to make the atrophied gingival papilla back to normal.