This prospective randomized clinical study compared the color stability and postoperative tooth sensitivity of provisional restorations fabricated using two CAD/CAM-milled materials (VITA CAD-Temp and Telio CAD) and a conventionally fabricated bis-acryl composite resin (Protemp 4) in patients undergoing fixed prosthodontic treatment. Forty-five participants were randomly allocated in a 1:1:1 ratio to the three provisional restorative material groups, with one restoration evaluated per participant. Color was measured spectrophotometrically at baseline, 2 weeks, 1 month, 2 months, and 3 months, and color change was calculated using the CIEDE2000 formula. Tooth sensitivity was assessed using a 0-10 visual analog scale before treatment, immediately after placement of the provisional restoration, and at 2 weeks, 1 month, 2 months, and 3 months. The study aimed to determine whether these provisional restorative material-workflow combinations differed in longitudinal color stability and postoperative tooth sensitivity during the 3-month clinical follow-up.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
45
A provisional fixed restoration was digitally designed and CAD/CAM-milled from a prefabricated VITA CAD-Temp microfilled reinforced polyacrylic resin block. The restoration was finished and polished according to the manufacturer's recommendations, clinically adjusted as needed, and cemented with Temp-Bond Clear temporary resin cement.
A provisional fixed restoration was digitally designed and CAD/CAM-milled from a prefabricated Telio CAD PMMA block. The restoration was finished and polished according to the manufacturer's recommendations, clinically adjusted as needed, and cemented with Temp-Bond Clear temporary resin cement.
A provisional fixed restoration was conventionally fabricated using Protemp 4 bis-acryl composite resin with a silicone index. The restoration was finished and polished according to the manufacturer's recommendations, clinically adjusted as needed, and cemented with Temp-Bond Clear temporary resin cement.
Gaziantep University Faculty of Dentistry, Department of Prosthodontics
Gaziantep, Gaziantep, Turkey (Türkiye)
Color Change of Provisional Restorations Measured by CIEDE2000 (ΔE00)
Color was measured using a VITA Easyshade spectrophotometer under standardized clinical conditions. Five consecutive measurements were obtained for each provisional restoration at each assessment, and the mean color coordinates were used. Color change relative to baseline was calculated using the CIEDE2000 color-difference formula (ΔE00). Higher ΔE00 values indicate greater color change.
Time frame: Baseline to 2 weeks, 1 month, 2 months, and 3 months
Tooth Sensitivity Measured by Visual Analog Scale (VAS)
Tooth sensitivity was assessed using a 0-10 visual analog scale (VAS), where 0 indicated no pain and 10 indicated unbearable pain. A standardized air stimulus was applied to the treated tooth from approximately 1 cm for a maximum of 3 seconds, and participants rated the intensity of sensitivity immediately after stimulation. Higher VAS scores indicate greater tooth sensitivity.
Time frame: Before treatment, immediately after provisional restoration placement, 2 weeks, 1 month, 2 months, and 3 months
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