A study by Drs. Hu and Zhu investigating the effect of an adhesive (Prime & Bond [DENTSPLY Calk]) on preventing postcementation hypersensitivity was published in the International Journal of Prosthodontics. The study involved vital abutment teeth which were restored with a full-coverage restoration using the immediate dentin sealing (IDS) technique. Twenty-five male patients received 25 3-unit fixed partial dentures. The study used a split-mouth design was used and 2 vital abutment teeth in each patient were allocated randomly into 2 groups (A or B). Teeth in Group A were treated with Prime & Bond using the IDS technique; teeth in Group B were left untreated and used as a control. Hypersensitivity was evaluated using the discomfort interval scale, ranging from zero to 4. The double-blind method was applied during the operation so that neither the patient nor the clinician knew which abutment had been treated. The sensitivity assessment was performed one week after cementation, and again at 1, 6, 12, and 24 months after cementation. Results were analyzed using the sign test. The study found that scores for teeth in Group A were statistically significantly lower than those in Group B at one week and one month postcementation (P < .05), considering that there was no significant difference between Groups A and B at the end of 6, 12, and 24 months (P > .05). The study authors concluded that preventive treatment with Prime & Bond using the IDS technique can significantly reduce postcementation hypersensitivity.
(Source: International Journal of Prosthodotics, January-February 2010, Volume 23, Issue 1)