In vivo effect of a self-etching primer on dentin

Egle Milia, Maria Rosaria Lallai, Franklin Garcia-Godoy

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Purpose: To determine the ultrastructural aspects of the dentin collagen area in the cavity preparation floor produced in vivo after phosphoric acid acid-etching or after using Clearfil Liner Bond 2 self-etching primer (LB2 Primer). Materials and Methods: Twenty-four non-carious third molars scheduled for extraction from young adult patients (16-30 years old) were used. Conventional Class I cavities (± 2 mm deep) were prepared on the occlusal surfaces of all teeth using a cylindrical diamond bur on a high-speed handpiece with copious water spray. To avoid dehydration of the dentin, the smear layer-covered dentin was briefly air-dried for 2 seconds. Cavities were assigned at random to the following groups: Group A: Dentin etched for 15 seconds with 34% phosphoric acid, rinsed for 20 seconds and then briefly air-dried for 2 seconds with oil-free compressed air leaving the surfaces slightly moist. Group B: LB2 Primer was applied to the cavity surfaces for 30 seconds and then briefly air-dried to remove the solvent. Group C: The untreated dentin smear layer was used as a control. In all three groups, the cavities were filled incrementally with a resin-based composite (APX), light curing every increment for 40 seconds. After 30 minutes, the teeth were extracted atraumatically and the samples immediately prepared for evaluation with the transmission electron microscope. Results: The use of a self-etching primer did not produce significant morphological changes in the moist dentin substrate. Adverse morphological conditions where observed when there was an excess water on the dentin surface. Phosphoric acid altered the collagen more severely than the self-etching primer.

Original languageEnglish (US)
Pages (from-to)167-171
Number of pages5
JournalAmerican journal of dentistry
Volume12
Issue number4
StatePublished - Aug 1 1999

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Dentin
Smear Layer
Air
Tooth
Collagen
Compressed Air
Diamond
Third Molar
Water
Composite Resins
Dehydration
Young Adult
Oils
Electrons
Light
Acids
phosphoric acid

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

In vivo effect of a self-etching primer on dentin. / Milia, Egle; Lallai, Maria Rosaria; Garcia-Godoy, Franklin.

In: American journal of dentistry, Vol. 12, No. 4, 01.08.1999, p. 167-171.

Research output: Contribution to journalArticle

Milia, Egle ; Lallai, Maria Rosaria ; Garcia-Godoy, Franklin. / In vivo effect of a self-etching primer on dentin. In: American journal of dentistry. 1999 ; Vol. 12, No. 4. pp. 167-171.
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