الفهرس 
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Abstract
The aim of this study was to assess the patients’ satisfaction after the
injection of hyaluronic acid gel for the reconstruction of deficient interdental papilla compared to saline solution as a placebo.
The secondary outcomes included change in surface area and height of
black triangle, clinical periodontal parameters such as probing depth, plaque index and gingival index at deficient papilla site and pain level 4 hours after injection.