48817
document
Controlled , prospective , randomized , clinical evaluation of partial ceramic crowns inserted with RelyX Unicem with or without selective enamel etching . 1-year results . PURPOSE To compare the performance of partial ceramic crowns ( PCCs ) inserted with RelyX Unicem ( RXU ) either with ( RXU+E ) or without ( RXU ) selective enamel etching . METHODS 34 patients ( 15 male , 19 female ) participated in the investigation , with a total of 68 PCC restorations . In each patient , one PCC was randomly assigned to insertion with RXU , the second PCC was assigned to insertion with RXU+E . The PCCs were CAD/CAM fabricated using the Cerec 3 system . RXU : 25 PCCs were placed in molars , nine in premolars . RXU+E : 26 PCCs were placed in molars , eight in premolars . The restorations were clinically rated using modified United States Public Health Service ( USPHS ) criteria at baseline , 6 and 12 months after placement . The median patient age was 41 years ( 24-59 years ) . The median ( 25-75 % ) PBI was 6 % ( 3-9 % ) . RESULTS All patients were available for the three recall appointments . One PCC ( RXU ) debonded after 11 months in situ , one PCC ( RXU+E ) fractured after 12 months in situ . Both restorations had to be replaced . At the 12 months recall , 66 of 68 controlled restorations were functional without need of replacement . The evaluation using USHPS criteria revealed a significant decrease of alfa ratings over time with respect to criteria marginal adaptation and marginal discoloration . No statistically significant differences between the two luting techniques , RXU and RXU+E , we reobserved during the observation period of 1 year . Within the limitations of the present study , adhesive luting with RXU with or without selective enamel etching can be recommended .
48818
Intervention_Physical
partial ceramic crowns
48819
Intervention_Physical
RelyX Unicem with or without selective enamel etching
48820
Intervention_Physical
partial ceramic crowns ( PCCs ) inserted with RelyX Unicem ( RXU )
48821
Intervention_Physical
with ( RXU+E ) or without ( RXU ) selective enamel etching
48822
Intervention_Physical
PCC
48823
Intervention_Physical
RXU
48824
Intervention_Physical
PCC
48825
Intervention_Physical
RXU+E
48826
Intervention_Physical
Cerec 3 system
48827
Intervention_Physical
RXU
48828
Intervention_Physical
RXU+E
48829
Intervention_Physical
RXU
48830
Intervention_Physical
RXU+E
48831
Intervention_Physical
RXU
48832
Intervention_Physical
RXU+E
48833
Intervention_Physical
RXU
48834
Outcome_Other
partial ceramic crowns ( PCCs )
48835
Outcome_Physical
debonded
48836
Outcome_Pain
fractured
48837
Outcome_Other
restorations
48838
Outcome_Other
replaced
48839
Outcome_Other
functional
48840
Outcome_Physical
alfa ratings over time
48841
Outcome_Other
with respect to criteria marginal adaptation and marginal discoloration