Impact of adhesive and photoactivation method on sealant integrity and polymer network formation
Braz. oral res
;
26(3): 249-255, May-June 2012. ilus, tab
Article
in English
| LILACS
| ID: lil-622941
ABSTRACT
We evaluated the influence of photoactivation method and hydrophobic resin (HR) application on the marginal and internal adaptation, hardness (KHN), and crosslink density (CLD) of a resin-based fissure sealant. Model fissures were created in bovine enamel fragments (n = 10) and sealed using one of the following protocols no adhesive system + photoactivation of the sealant using continuous light (CL), no adhesive system + photoactivation of the sealant using the soft-start method (SS), HR + CL, or HR + SS. Marginal and internal gaps and KHN were assessed after storage in water for 24 h. The CLD was indirectly assessed by repeating the KHN measurement after 24 h of immersion in 100% ethanol. There was no difference among the samples with regard to marginal or internal adaptation. The KHN and CLD were similar for samples cured using either photoactivation method. Use of a hydrophobic resin prior to placement of fissure sealants and curing the sealant using the soft-start method may not provide any positive influence on integrity or crosslink density.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Pit and Fissure Sealants
/
Dentin-Bonding Agents
/
Composite Resins
/
Polymerization
Type of study:
Evaluation studies
/
Prognostic study
Limits:
Animals
Language:
English
Journal:
Braz. oral res
Journal subject:
Dentistry
Year:
2012
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Bandeirante University of São Paulo/BR
/
Federal University of Rio Grande do Norte/BR
/
Laureate International Universities/BR
/
University of Pernambuco/BR
Similar
MEDLINE
...
LILACS
LIS