Seasonal Changes in the Caste Distribution of Foraging Populations of Formosan Subterranean Termite in New Orleans, Louisiana.

This study examined the relationship between temperature, precipitation, soil composition, levels of feeding damage, and the caste distribution (workers, soldiers, nymphs) of the Formosan subterranean termite, Coptotermes formosanus Shiraki, collected in underground monitoring stations over a 12 mo period. Because nymphs are the caste that develops into alates, the seasonal abundance of nymphs was examined over a 5 yr period. Numbers of workers, soldiers, and soldier/worker ratio were significantly affected by month.

Effect of an intraosseous injection of depo-medrol on pulpal concentrations of PGE2 and IL-8 in untreated irreversible pulpitis.

The purpose of this prospective, randomized, double-blind study was to evaluate the pulpal concentrations of prostaglandin E2 (PGE2) and interleukin-8 (IL-8) in untreated teeth with irreversible pulpitis after the administration of an intraosseous injection of Depo-Medrol. Forty emergency patients with a clinical diagnosis of irreversible pulpitis experiencing moderate to severe pain participated. After receiving local anesthesia, patients randomly received, in a double-blind manner, an intraosseous injection of either 1 ml of Depo-Medrol (40 mg) (20 patients) or 1 ml of sterile saline placebo (control) (20 patients).

Pain reduction in untreated irreversible pulpitis using an intraosseous injection of Depo-Medrol.

The purpose of this prospective, double-blind, randomized study was to evaluate pain reduction using an intraosseous injection of slow-releasing methylprednisolone in teeth with irreversible pulpitis. Forty subjects presenting for emergency treatment completed the study. Each subject had a tooth with a clinical diagnosis of irreversible pulpitis with actively associated moderate to severe pain.

Anesthetic efficacy and heart rate effects of the intraosseous injection of 1.5% etidocaine (1:200,000 epinephrine) after an inferior alveolar nerve block.

Objective: The purpose of this study was to determine the anesthetic efficacy and heart rate effects of an intraosseous (IO) injection of 1.5% etidocaine with 1:200,000 epinephrine after an inferior alveolar nerve block.

Study Design: In a repeated-measures designed study, 48 subjects randomly received 2 combinations of injections at 2 separate appointments.

Anesthetic efficacy and heart rate effects of the intraosseous injection of 3% mepivacaine after an inferior alveolar nerve block.

Objective: The purpose of this study was to determine the anesthetic efficacy and heart rate effects of an intraosseous injection of 3% mepivacaine after an inferior alveolar nerve block.

Study Design: Through use of a repeated-measures design, each of 48 subjects randomly received 2 combinations of injections at 2 separate appointments. The combinations were (1) an inferior alveolar nerve block (with 1.