| Influence of treatment modalities of prepared teeth on retention of cast metal copings bonded with self-adhesive resin cements. | |
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MedLine Citation:
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PMID: 22532962 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Objective: To evaluate the influence of different conditioning methods of prepared teeth on the retention of cast metal copings bonded with two self-adhesive resin cements. Method and Materials: Mandibular first molars (n = 80) were prepared to receive metal copings. Sixteen molars were stored in water without interim copings as a control group (CG), while 64 molars were covered with interim copings. Eighty cast copings were laboratory fabricated from Ni-Cr alloy. Interim copings were removed, and 64 molars were cleaned and divided into four groups (n = 16) according to pretreatment methods of prepared molars: no pretreatment (T-NT) and conditioning with self-etching adhesive (T-SE), polyacrylic acid (T-PA), or ethylenediaminetetraacetic acid (EDTA) (T-ED). Each group was further subdivided into two subgroups (n = 8) according to luting cements. RelyX Unicem and seT self-adhesive resin cements were used for cementation of copings. Specimens were stored in water at 37°C for 6 months and then cyclically loaded and thermal cycled. Retentive stress in N was recorded for each specimen. Statistical analyses were conducted with two- and one-way ANOVA and Tukey HSD test. Results: Retentive stress ranged from 526.7 to 692.9 N for RelyX Unicem and 339.8 to 492.3 N for seT. There were no statistically significant differences between the mean retentive stress of the CG, T-SE, and T-PA groups (P > .05). The mean retentive stress of group CG was significantly higher than mean retentive stress of groups T-NT and T-ED (P < .05). The mean retentive stress of the control and test groups bonded with RelyX Unicem was significantly higher than the mean retentive stress of the same groups bonded with seT. Conclusion: Conditioning of prepared teeth using polyacrylic acid or self-etching adhesive significantly increased the retentive stress of cast metal copings. (Quintessence Int 2012;43:e73-e81). |
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Authors:
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Ahmed Attia |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Quintessence international (Berlin, Germany : 1985) Volume: 43 ISSN: 1936-7163 ISO Abbreviation: Quintessence Int Publication Date: 2012 Jun |
Date Detail:
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Created Date: 2012-04-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0342677 Medline TA: Quintessence Int Country: Germany |
Other Details:
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Languages: eng Pagination: e73-81 Citation Subset: D |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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