A clinical comparison of two cements for levels of post-operative sensitivity in a practice-based setting.
This study compared the post-operative results of cementing full crowns (all metal or PFM) with either a conventional (Fuji I, GC; n=102) or a resin modified GI luting cement (Rely X, 3M/ESPE; n=107).


METHODS
Ten private practitioners fabricated 209 crowns using standardized preparation/luting criteria and randomly assigned cements. Patients self-reported temperature and biting sensitivity, on a 0-10 scale at 24 hours, one week, one month and three months post-cementation. Data were analyzed using t-tests, confirmatory Mann-Whitney tests and Pearson correlations, with a significance level of p < or = 0.05.


RESULTS
Of all patients, 50.7% reported any sensitivity at any time period. Mean sensitivity for all patients on the 10-point scale was 0.52 for temperature and 0.23 for biting. Cements did not differ in cold or biting sensitivity at any time. There were many significant (though low) correlations between the sensitivity measures and age (inverse relationship) and dentin area of preparation (direct). The practice-based format provided a viable alternative to performing clinical research.
Hilton
Thomas
T
Department of Restorative Dentistry, OHSU School of Dentistry, Portland, OR, USA. hiltont@ohsu.edu
Hilton
Deanna
D
Randall
Ros
R
Ferracane
Jack L
JL
D000367:Age Factors; D000704:Analysis of Variance; D002484:Cementation / Q000009:adverse effects*; D003188:Composite Resins / Q000009:adverse effects; D003442:Crowns; D003807:Dentin Sensitivity / Q000209:etiology*; D017220:Dentin-Bonding Agents / Q000009:adverse effects*; D005899:Glass Ionomer Cements / Q000009:adverse effects*; D006801:Humans; D016015:Logistic Models; D016876:Metal Ceramic Alloys; D008670:Metals; D018709:Statistics, Nonparametric; D019231:Tooth Preparation, Prosthodontic
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D016876:Metal Ceramic Alloys; D008670:Metals; C084550:Vitremer; C084541:Fuji glass-ionomer lining cement