Wear resistance and surface roughness of a newly devised adhesive patch for sealing smooth enamel surfaces.
A laboratory study assessed the wear resistance and surface roughness after chemical and mechanical wear of a newly devised adhesive patch when used as a smooth surface sealant. Forty-eight enamel discs were prepared from bovine lower central incisors. Sixteen specimens were treated with one of two sealing options: the prototype of an adhesive patch or a flowable resin. Unsealed enamel served as the positive control. Wear and surface roughness was measured at baseline and after all the samples were immersed in saliva or lactic acid (n=8 per treatment group) for up to 21 days, during which the experimental and control enamel surfaces were exposed to 10 double-stroke toothbrush cycles per day. In saliva and lactic acid, the sealed specimens showed no significant wear during the observation period (p=0.1841). Only untreated specimens exposed to lactic acid showed a significant substance loss after 14 and 21 days (p=0.0186). The patch and flowable resin showed no differences in surface roughness values at respective times (p=0.385); whereas the surface roughness of the unsealed specimens in lactic acid was significantly higher (p<0.0001). It was concluded that the adhesive patch under investigation merits further study to assess its potential as a sealant for smooth enamel surfaces.
Department of Preventive Dentistry, Periodontology and Cariology, Dental Institute, University of Zurich, Zurich, Switzerland. patrick.schmidlin@zzmk.unizh.ch
Patrick R
PR
Schmidlin
Till N
TN
Göhring
Malgorzata
M
Roos
Matthias
M
Zehnder
D000269:Adhesives / Q000737:chemistry*; D000818:Animals; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure*; D007091:Image Processing, Computer-Assisted; D019344:Lactic Acid / Q000737:chemistry; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D013499:Surface Properties; D014099:Toothbrushing
D000269:Adhesives; D003188:Composite Resins; D010895:Pit and Fissure Sealants; D019279:Resin Cements; D012464:Saliva, Artificial; C078484:Syntac dentine adhesive; C452226:tetric flow composite resin; D019344:Lactic Acid