Is inflammatory pulpal pain a risk factor for amnesia?
2014
Maryam Raoof | Ramin Raoof | Mehdi Abbasnejad | Saeed Esmaeili Mahani | Mohsen Ramezani | Hamed Ebrahim nejad | Sara Amanpour | Jahangir Haghani
The aim of this study was to investigate the effect of inflammatory pulpal pain on spatial learning and memory in male Wistar rats. Fifty-six adult rats were divided into eight groups as follows (n=7 per group): control, sham-operated group that received normal saline, sham vehicle group that received vehicle of capsaicin, three capsaicin treated groups that received intradental injection of 10, 25 and 100 μg capsaicin, respectively, formalin treated group that received 10 μl formalin 2.5% and ibuprofen treated group that received ibuprofen 20 min before capsaicin (100 μg) injection. After preparing cavities via cutting 2 mm of the distal extremities of the mandibular incisors, the polyethylene crowns were placed on the teeth. Based on the study group, different algesics were administrated under the crowns. After recording the pain scores, spatial learning and memory was assessed using Morris water maze test. Capsaicin 25, 100 μg and formalin 2.5% applications induced significantly more painful stimulation compared with control groups (p< 0.001). Capsaicin 25, 100 μg and also formalin-treated groups significantly showed increased escape latency and traveled distance (p
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