title: Sealing smooth enamel surfaces with a newly devised adhesive patch: a radiochemical in vitro analysis.
abstract: OBJECTIVE
  To assess the enamel-protective potential of a newly devised adhesive patch when used as a smooth surface sealant.
  
  
  METHODS
  Eighty enamel discs were prepared from bovine lower central incisors and then irradiated. Twenty specimens were treated with one of three sealing options: enamel bond in a two-step application, the prototype of an adhesive patch, or a flowable resin. Unsealed enamel served as positive controls. Loss of apatite was determined using a radiochemical liquid scintillation method after immersion of the samples in saliva or lactic acid (n=10 per treatment group) each for up to 21 days, during which this experimental and control enamel surfaces were exposed to ten toothbrush strokes per day. Quantitative liquid scintillation data were verified by polarized light microscopy.
  
  
  RESULTS
  With lactic acid exposure, a double layer of enamel bonding showed better enamel protection than untreated controls, but was significantly less effective than the adhesive patch or filled composite (P<0.05). No significant differences were noted between the latter two treatments.
  
  
  CONCLUSIONS
  It was concluded that the adhesive patch under investigation merits further studies to assess its potential as an inter-proximal sealant.
authors.affiliation: Clinic for Preventive Denstistry, Periodontology and Cariology, Center for Dental and Oral Medicine and Cranio-Maxillifacial Surgery, University of Zürich, Plattenstrasse 11, 8028 Zürich, Switzerland. patrick.schmidlin@zzmk.unizh.ch
authors.forename: Patrick R
authors.initials: PR
authors.lastname: Schmidlin
authors.forename: Matthias
authors.initials: M
authors.lastname: Zehnder
authors.forename: May A
authors.initials: MA
authors.lastname: Zimmermann
authors.forename: Jörg
authors.initials: J
authors.lastname: Zimmermann
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Roos
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Roulet
mesh_terms: D000179:Acrylates; D000269:Adhesives / Q000737:chemistry*; D000704:Analysis of Variance; D000818:Animals; D002417:Cattle; D003743:Dental Enamel / Q000000981:diagnostic imaging; D003799:Dental Stress Analysis; D017886:Durapatite / Q000032:analysis; D006244:Hardness; D019344:Lactic Acid; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D008859:Microscopy, Polarization; D010895:Pit and Fissure Sealants; D011877:Radionuclide Imaging; D019279:Resin Cements; D012463:Saliva; D013718:Tensile Strength; D017001:Tooth Demineralization / Q000517:prevention & control; D017155:Wettability
chemical_list: D000179:Acrylates; D000269:Adhesives; D010895:Pit and Fissure Sealants; D019279:Resin Cements; D019344:Lactic Acid; C040415:heliobond; D017886:Durapatite