Influence of the Number of Layers of a One Bottle Adhesive on the Longevity of Composite Restorations in Primary Molars
NCT ID: NCT01680289
Last Updated: 2014-12-02
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
60 participants
INTERVENTIONAL
2012-08-31
2015-08-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
FACTORIAL
TREATMENT
TRIPLE
Study Groups
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Three adhesive coats
Consecutive application of three one-bottle adhesive coats
Two adhesive coats
After caries removal, enamel margins will be conditioned with phosphoric acid gel 37% by 15 seconds and dentin walls by 8 seconds. The etchant will be removed with use of water spray by 30 seconds. The water excess will be removed with a cotton pellet. The first layer of Prime \& Bond 2.1 adhesive will be applied with a microbrush. After 20 seconds a second layer will be applied and after 20 seconds, the layers will be gently air-dried by 5 seconds. The two layers will be photopolymerized by 10 seconds with a LED photoactivation unit.
Two adhesive coats
Consecutive application of two one-bottle adhesive coats
Three adhesive coats
After caries removal, enamel margins will be conditioned with phosphoric acid gel 37% by 15 seconds and dentin walls by 8 seconds. The etchant will be removed with use of water spray by 30 seconds. The water excess will be removed with a cotton pellet. The first layer of Prime \& Bond 2.1 adhesive will be applied with a microbrush. After 20 seconds a second layer will be applied and after a similar period a third layer will be applied over cavity walls. Again, after 20 seconds, the layers will be gently air-dried and photopolymerized by 10 seconds with a LED photoactivation unit.
Interventions
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Three adhesive coats
After caries removal, enamel margins will be conditioned with phosphoric acid gel 37% by 15 seconds and dentin walls by 8 seconds. The etchant will be removed with use of water spray by 30 seconds. The water excess will be removed with a cotton pellet. The first layer of Prime \& Bond 2.1 adhesive will be applied with a microbrush. After 20 seconds a second layer will be applied and after a similar period a third layer will be applied over cavity walls. Again, after 20 seconds, the layers will be gently air-dried and photopolymerized by 10 seconds with a LED photoactivation unit.
Two adhesive coats
After caries removal, enamel margins will be conditioned with phosphoric acid gel 37% by 15 seconds and dentin walls by 8 seconds. The etchant will be removed with use of water spray by 30 seconds. The water excess will be removed with a cotton pellet. The first layer of Prime \& Bond 2.1 adhesive will be applied with a microbrush. After 20 seconds a second layer will be applied and after 20 seconds, the layers will be gently air-dried by 5 seconds. The two layers will be photopolymerized by 10 seconds with a LED photoactivation unit.
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* Bruxism
* Orthodontic appliance
* Absence of occlusal contact in eligible teeth
* Signs and symptoms of pulp infflamation or necrosis
5 Years
8 Years
ALL
Yes
Sponsors
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Universidade Federal do Rio de Janeiro
OTHER
Responsible Party
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Marlus Roberto Rodrigues Cajazeira
Assistant Professor
Principal Investigators
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Marlus RR Cajazeira, MsD
Role: PRINCIPAL_INVESTIGATOR
Universidade Federal do Rio de Janeiro
Lucianne Cople Maia, PhD
Role: STUDY_CHAIR
Universidade Federal do Rio de Janeiro
Eduardo M da Silva, PhD
Role: STUDY_CHAIR
Universidade Federal Fluminense
Alessandro D Loguércio, PhD
Role: STUDY_CHAIR
Universidade Estadual de Ponta Grossa
Michelle M Amari, MsD
Role: STUDY_DIRECTOR
Universidade Federal Fluminense
Locations
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School of Dentistry of Federal University of Rio de Janeiro
Rio de Janeiro, Rio de Janeiro, Brazil
Countries
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Central Contacts
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Facility Contacts
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References
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Hashimoto M, Sano H, Yoshida E, Hori M, Kaga M, Oguchi H, Pashley DH. Effects of multiple adhesive coatings on dentin bonding. Oper Dent. 2004 Jul-Aug;29(4):416-23.
Hashimoto M, De Munck J, Ito S, Sano H, Kaga M, Oguchi H, Van Meerbeek B, Pashley DH. In vitro effect of nanoleakage expression on resin-dentin bond strengths analyzed by microtensile bond test, SEM/EDX and TEM. Biomaterials. 2004 Nov;25(25):5565-74. doi: 10.1016/j.biomaterials.2004.01.009.
Hashimoto M. A review--micromorphological evidence of degradation in resin-dentin bonds and potential preventional solutions. J Biomed Mater Res B Appl Biomater. 2010 Jan;92(1):268-80. doi: 10.1002/jbm.b.31535.
Pashley DH, Tay FR, Yiu C, Hashimoto M, Breschi L, Carvalho RM, Ito S. Collagen degradation by host-derived enzymes during aging. J Dent Res. 2004 Mar;83(3):216-21. doi: 10.1177/154405910408300306.
Hashimoto M, Ohno H, Kaga M, Sano H, Endo K, Oguchi H. The extent to which resin can infiltrate dentin by acetone-based adhesives. J Dent Res. 2002 Jan;81(1):74-8. doi: 10.1177/002203450208100116.
Related Links
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School of Dentistry of Federal University of Rio de Janeiro web site
Other Identifiers
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PRIMEBOND21
Identifier Type: REGISTRY
Identifier Source: secondary_id
Adhesive1
Identifier Type: -
Identifier Source: org_study_id