The long-term effect of a composite resin restoration on proximal contact tightness.
OBJECTIVE
The aim of this study was to investigate changes in proximal contact tightness up to 6 months after the restorative treatment.


METHODS
In a randomised clinical trial Class II composite resin restorations were placed in 52 patients. Proximal contact tightness was measured before, directly after, and 6 months after treatment. These data were analysed statistically using linear regression and t-tests.


RESULTS
Proximal contacts, that increased in tightness as result of the treatment tend to loose tightness after a 6-months period but remain tighter than before treatment. Proximal contacts, that decreased after treatment hardly change after 6 months.


CONCLUSIONS
A change in contact tightness after restorative treatment will not always remain stable over time.
Loomans
B A C
BA
Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands. b.loomans@dent.umcn.nl
Opdam
N J M
NJ
Roeters
F J M
FJ
Bronkhorst
E M
EM
Plasschaert
A J M
AJ
D000328:Adult; D000368:Aged; D003188:Composite Resins / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000145:classification* / Q000295:instrumentation; D005260:Female; D005500:Follow-Up Studies; D017276:Friction; D006801:Humans; D008297:Male; D008434:Matrix Bands; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D019279:Resin Cements / Q000737:chemistry; D013499:Surface Properties; D013997:Time Factors
C112828:Clearfil AP-X; C438313:Clearfil SE Bond; D003188:Composite Resins; D008689:Methacrylates; D019279:Resin Cements; C074669:Clearfil Photo Bond