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• W2885671435 abstract "Abstract A moldable and biodegradable dental material was designed for customized placement and sustained delivery of bupivacaine (BP) within an extraction cavity. Microparticles comprising poly(lactic-co-glycolic acid) (PLGA) containing BP were generated via solvent-evaporation and combined with absorbable hemostat Gelfoam®. Kinetics of drug release were evaluated by in vitro dialysis assays, showing higher release within the first 24 hours, with subsequent tapering of release kinetics. Formulations of Gelfoam® and BP-PLGA microparticles (GelBP), with three targeted dosing profiles (0.25, 0.5, and 1 mg/kg/day), were evaluated alongside acute subcutaneous BP injections (2 mg/kg) to determine analgesic efficacy in a rat model of tooth extraction pain. Molar extraction resulted in mechanical and thermal cold hyperalgesia in male and female rats. GelBP outperformed acute BP in blocking post-surgical dental pain, with the 0.25 mg/kg GelBP dose preventing hypersensitivity to mechanical (p < 0.01) and thermal cold stimuli (p = 0.05). Molar extraction also resulted in decreased food consumption and weight. Males receiving acute BP and 0.25 mg/kg GelBP maintained normal food consumption (p < 0.002) and weight (p < 0.0001) throughout 7 days. Females, receiving 0.25 mg/kg GelBP maintained weight on days 5–7 (p < 0.04). Customized, sustained release formulation of anesthetic within a tooth extraction cavity holds potential to eliminate post-operative dental pain over several days." @default.
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• W2885671435 date "2018-08-15" @default.
• W2885671435 modified "2023-10-12" @default.
• W2885671435 title "A moldable sustained release bupivacaine formulation for tailored treatment of postoperative dental pain" @default.
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• W2885671435 doi "https://doi.org/10.1038/s41598-018-29696-w" @default.
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