Pressable feldspathic inlays in premolars

effect of cementation strategy and mechanical cycling on the adhesive bond between dentin and restoration.

Sabrina Feitosa, Pedro Henrique Corazza, Paulo Francisco Cesar, Marco Antonio Bottino, Luiz Felipe Valandro

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

To evaluate the effect of the cementation strategy and mechanical cycling (MC) on the microtensile bond strength (MTBS) of feldspathic inlays cemented to premolars. Forty-eight human premolars were prepared and porcelain inlays were produced. Specimens were allocated into 3 groups, based on the cementation strategy: 1) conventional adhesive cementation (RelyX ARC, 3M ESPE): application of etch-and-rinse single bottle adhesive to dentin / ceramic surface treated with hydrofluoric acid (HF) and silane (S) / cementation with resin cement; 2) simplified cementation using a self-adhesive resin cement (RelyX U100, 3M ESPE); 3) modified simplified cementation using a self-adhesive resin cement (RelyX U100, 3M ESPE) with HF+S treatment. Half of the specimens from each group were submitted to MC (2x106 pulses, frequency = 4 Hz, load = 100 N). Each specimen was serially sliced for MTBS and the failures were classified. The stress distribution analysis using FEA was verified. All of the bar-samples from G2 were lost during cutting of the specimens. Mechanical-cycling had no significant effect on bond strength, whereas cementation strategy significant affected MTBS results. The most common type of failure was cohesive of cement. FEA showed that stresses were concentrated mainly at the loading region going up to the root fixation. Porcelain inlays cemented with conventional resin cement or self-adhesive resin cement should be associated with ceramic surface treatment. FEA showed the most critical zone for failure is located in the cement region close to the marginal crest.

Original languageEnglish (US)
Pages (from-to)147-154
Number of pages8
JournalThe journal of adhesive dentistry
Volume16
Issue number2
StatePublished - Jan 1 2014
Externally publishedYes

Fingerprint

Cementation
Inlays
Bicuspid
Dentin
Resin Cements
Adhesives
Hydrofluoric Acid
Dental Porcelain
Ceramics
Silanes

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Pressable feldspathic inlays in premolars : effect of cementation strategy and mechanical cycling on the adhesive bond between dentin and restoration. / Feitosa, Sabrina; Corazza, Pedro Henrique; Cesar, Paulo Francisco; Bottino, Marco Antonio; Valandro, Luiz Felipe.

In: The journal of adhesive dentistry, Vol. 16, No. 2, 01.01.2014, p. 147-154.

Research output: Contribution to journalArticle

Feitosa, Sabrina ; Corazza, Pedro Henrique ; Cesar, Paulo Francisco ; Bottino, Marco Antonio ; Valandro, Luiz Felipe. / Pressable feldspathic inlays in premolars : effect of cementation strategy and mechanical cycling on the adhesive bond between dentin and restoration. In: The journal of adhesive dentistry. 2014 ; Vol. 16, No. 2. pp. 147-154.
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abstract = "To evaluate the effect of the cementation strategy and mechanical cycling (MC) on the microtensile bond strength (MTBS) of feldspathic inlays cemented to premolars. Forty-eight human premolars were prepared and porcelain inlays were produced. Specimens were allocated into 3 groups, based on the cementation strategy: 1) conventional adhesive cementation (RelyX ARC, 3M ESPE): application of etch-and-rinse single bottle adhesive to dentin / ceramic surface treated with hydrofluoric acid (HF) and silane (S) / cementation with resin cement; 2) simplified cementation using a self-adhesive resin cement (RelyX U100, 3M ESPE); 3) modified simplified cementation using a self-adhesive resin cement (RelyX U100, 3M ESPE) with HF+S treatment. Half of the specimens from each group were submitted to MC (2x106 pulses, frequency = 4 Hz, load = 100 N). Each specimen was serially sliced for MTBS and the failures were classified. The stress distribution analysis using FEA was verified. All of the bar-samples from G2 were lost during cutting of the specimens. Mechanical-cycling had no significant effect on bond strength, whereas cementation strategy significant affected MTBS results. The most common type of failure was cohesive of cement. FEA showed that stresses were concentrated mainly at the loading region going up to the root fixation. Porcelain inlays cemented with conventional resin cement or self-adhesive resin cement should be associated with ceramic surface treatment. FEA showed the most critical zone for failure is located in the cement region close to the marginal crest.",
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