Evaluation of a standard shade guide for color change after disinfection.

Objective: To determine if surface disinfectants cause a change in the shade perception of a standard Classic Vitapan shade guide.

Method And Materials: Consistency in shade selection for dental restorations involves many factors, and one of the most important is the shade tabs used in the selection process. Ten shade tabs each of shades B2, D2, C1, and A3.

Performance of 2 packable composites at 12 months.

Objective: The purpose of this randomized, double-blind, clinical trial was to compare the marginal seal of 2 packable resin composite materials in moderate to large lesions on molars.

Method And Materials: Fifty participants in need of a moderate to large Class 2 or complex Class 1 molar restoration were randomly distributed into 4 groups, to receive either Alert (Jeneric/Pentron) or SureFil (Dentsply/Caulk) resin composite with or without a surface sealer. Each participant received one restoration.

Predictors of non-carious loss of cervical tooth tissues.

This Predictor Variables study is designed to determine which one of 11 factors evaluated may be correlated to Non-carious Loss of Cervical Tooth Tissues (NLCTT) using subjects with and without NLCTT. The ultimate objective is to successfully predict the path toward risky behaviors and reduce the incidence of NLCTT.

Depths of cure and effect of shade using pulse-delay and continuous exposure photo-curing techniques.

This study investigated the extent of cure (monomer conversion into polymer) of a variety of photo-initiated resin composites and different shades. Cure values were measured at the top surface and at simulated lighting conditions 0.5, 1.

Sensitivity and tooth whitening agents.

Purpose: Three commercially available dentist-prescribed home-applied bleaching systems were evaluated to identify the incidence of sensitivity and to compare the efficacy of whitening the maxillary anterior teeth of 18 patients.

Methods: NiteWhite Excel 2Z (Discus Dental), fx (Challenge Products), and Rembrandt Xtra-Comfort (DenMat Corp.) were randomly assigned to six patients each.

Transcutaneous oxygen tension in patients with post-thrombotic leg ulcers: treatment with intermittent pneumatic compression.

Transcutaneous oxygen tension (TcPO2) and the effect of intermittent pneumatic compression on tissue oxygenation were studied in 10 patients with post-thrombotic leg ulcers. Oxygen tension was measured near the edge of the leg ulcer before and after 60 min of intermittent compression at 50 mmHg. The control group consisted of nine subjects with no evidence of peripheral vascular disease.

Acupuncture compared with stomatognathic treatment for TMJ dysfunction. Part III: Effect of treatment on mobility.

The purpose of this study was to compare the effects of acupuncture and stomatognathic treatment on the mobility of the mandible in random samples of patients with TMJ dysfunction. One group of 25 patients was treated with acupuncture performed by a specialist in physical medicine and rehabilitation and a second similar group received standard stomatognathic treatment. All of the patients were evaluated in terms of the Helkimo dysfunction index by a dentist before treatment, within 1 week of treatment, and 3 months after treatment.