Abstract
Objective: The objective of this study was to investigate clinical effect of topically administered hyaluronic acid (HA) mouthwash on healing of secondary palatal wound in diabetic (D) rats. 
 Methods: 60 Wistar albino male rats were divided into D and non-diabetic (ND) groups. Diabetes was induced to 30 randomly selected rats by initially administering 110 mg/kg of nicotinamide intraperitoneally, followed by 15 min of intraperitoneal injection of 65 mg/kg of streptozotocin solution. 5 mm excisional wounds were made in the centre of the palate. After that, 6 animals from each group were sacrificed. Then, both groups were subdivided into two groups: 0.12% HA mouthwash and saline (S) (n=12 per group), depending on the agent to be administered to the wound area (WA). On days 7 and 14, six rats from each group were sacrificed, and the WAs were measured through photographic measurements utilizing Image J software.
 Results: The WA decreased with time in each group (p
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