Resistance of two dentin-bonding agents and a dentin densensitizer to acid erosion in vitro.
OBJECTIVE
To determine the resistance of two dentin-bonding agents (DBAs) and a dentin desensitizer to simulated dental erosion.


METHODS
Twenty teeth in each of three groups of selected premolars, with exposed cervical dentin, were treated with one of three dentin surface treatment systems: Gluma Desensitizer (Heraeus Kulzer (UK) Ltd), One Coat Bond (Whaledent (UK) Ltd), and Optibond FL (Kerr (UK) Ltd) and exposed to water (control) and an erosive challenge (Coca Cola) for 14 days. Sequential tracings of the specimens were taken, superimposed and the mean reduction in densensitizer or DBA thickness and or tooth loss determined.


RESULTS
A mean loss of 77 microns (s.d. 14.6 microns) of tooth tissue over the untreated sites following 14 days exposure to Coca Cola was observed. The application of DBAs, as opposed to Gluma Desensistizer alone, over exposed dentin surfaces afforded substantial protection against erosion by Coca Cola over the period of study. The mean change in vertical profile of teeth treated with a DBA was 20 microns (s.d. 14.7 microns), almost four times less than that seen over untreated sites.


CONCLUSIONS
With the exception of Gluma Desensitizer, which was lost completely, One Coat Bond and Optibond FL demonstrated levels of acid dissolution resistance, which would be of potential value clinically.
Unit of Operative Dentistry and Endodontology, University Dental Hospital of Manchester, Higher Cambridge Street, Manchester M15 6FH, UK. paul.brunton@man.ac.uk
P A
PA
Brunton
K S
KS
Kalsi
D C
DC
Watts
N H
NH
Wilson
D000704:Analysis of Variance; D002253:Carbonated Beverages / Q000009:adverse effects; D003738:Dental Cements / Q000737:chemistry / Q000627:therapeutic use; D003807:Dentin Sensitivity / Q000517:prevention & control*; D017220:Dentin-Bonding Agents / Q000737:chemistry* / Q000627:therapeutic use; D005976:Glutaral / Q000737:chemistry / Q000627:therapeutic use; D006801:Humans; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D008689:Methacrylates / Q000737:chemistry / Q000627:therapeutic use; D019279:Resin Cements / Q000737:chemistry / Q000627:therapeutic use; D014077:Tooth Erosion / Q000209:etiology / Q000517:prevention & control*
D003738:Dental Cements; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C426984:One Coat Bond; C092987:Optibond; D019279:Resin Cements; C111486:gluma desensitizer; D005976:Glutaral