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Influence of adhesi...
Influence of adhesive systems on interfacial dentin gap formation in vitro.
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Loguercio, Alessandro Dourado (författare)
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Reis, Alessandra (författare)
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Bortoli, G (författare)
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visa fler...
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Patzlaft, R (författare)
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Kenshima, Silvia (författare)
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Rodrigues Filho, Leonardo Eloy (författare)
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Accorinte Mde, L (författare)
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- van Dijken, Jan (författare)
- Umeå universitet,Tandhygienistutbildning
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visa färre...
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(creator_code:org_t)
- 2006
- 2006
- Engelska.
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Ingår i: Operative dentistry. - 0361-7734 .- 1559-2863. ; 31:4, s. 431-441
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- PURPOSE: This study measured: 1) the interfacial dentin gap formation (IGW) of 2 etch & rinse and 3 self-etch systems with different degrees of acidity and determined the correlation between the smear layer thickness and interfacial gap formation after 1 day and 6 months water storage; 2) the hybrid layer thickness (HLT) produced by the adhesives applied under different smear layer thicknesses. METHODS AND MATERIALS: Three self-etch adhesives, a mild (Clearfil SE Bond; SE), a moderate (Optibond Solo Plus Self-Etch Primer; SO) and a strong (Tyrian Self Priming Etchant + One Step Plus; TY), and 2 etch & rinse systems (Single Bond; SB and Scotchbond Multi-Purpose Plus; SBMP) were studied. After flat grinding of the occlusal surfaces, 30 molars were sectioned longitudinally in 2 halves. Dentin surfaces with thick and thin smear layers were obtained for each tooth after polishing different sections on 60- and 600-grit SiC paper, respectively. A resin composite (Z250) build-up was made on each tooth section after randomized application of the adhesives. After 24-hour storage in water, resin-dentin bonded sticks (0.8 mm2) were prepared and divided for 1-day and 6-month measurements. The IGW was measured in a stereomicroscope under 400x. SEM micrographs were also made in order to measure the HLT provided by each adhesive. RESULTS: The thickness of the smear layer did not influence the mean gap width (p>0.05). The etch & rinse systems showed the lowest mean IGW in the 1-day group. Their IGW remained unchanged after 6 months. The self-etch systems showed wider initial IGW, which diminished after 6 months water storage, to sizes similar to the etch & rinse systems. The hybrid layer was thicker when bonded to #60 SiC-treated dentin; however, this difference was only statistically different for the 3-step etch & rinse system (p=0.001). The thickest hybrid layers were observed for the 2 etch & rinse adhesive systems and the thinnest for the mild self-etch. A negative and strong correlation between IGW and HLT was observed for the self-etching adhesive systems tested (r=80.2, p=0.01).
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Odontologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dentistry (hsv//eng)
Nyckelord
- ODONTOLOGY
- ODONTOLOGI
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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