Abstract | AIM: MATERIALS AND METHODS: Twelve extracted teeth were selected. Three etching acids were used to prepare the dentin surfaces. Scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDX) were used to analyze the chemical and morphological changes of the dentinal surfaces, including the depth of demineralization. Collected data were statistically analyzed by the one-way analysis of variance test. RESULTS: Dentin etched with phosphoric acid gel or liquid showed greater peritubular dentin dissolution, including complete removal of the smear layer. In addition, there were many silica particles on the dentin etched by phosphoric acid gel 37%. The dentin that was etched with 25% polyacrylic acid for 15 seconds showed no smear layer removal. Chemical analysis (EDX) showed that dental surfaces etched with phosphoric acid liquid 37% for 15 seconds showed the strongest mineral dissolution at the calcium surface, with a calcium content of 5.25%. On the other hand, EDX analysis of the dental surface etched with 25% polyacrylic acid showed more surface enrichment in calcium (17.19%). CONCLUSION: CLINICAL SIGNIFICANCE: The clinician should use phosphoric acid (gel or liquid) to clean dental surfaces to prepare them for the bonding process. The low demineralizing effects of the polyacrylic acid permits its use near the pulp.
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Authors | Naji Kharouf, Davide Mancino, Asâd Naji-Amrani, Ammar Eid, Youssef Haikel, Joseph Hemmerle |
Journal | The journal of contemporary dental practice
(J Contemp Dent Pract)
Vol. 20
Issue 8
Pg. 915-919
(Aug 01 2019)
ISSN: 1526-3711 [Electronic] India |
PMID | 31797847
(Publication Type: Journal Article)
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Chemical References |
- Dentin-Bonding Agents
- Phosphoric Acids
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Topics |
- Acid Etching, Dental
- Dental Bonding
- Dentin
- Dentin-Bonding Agents
- Humans
- Microscopy, Electron, Scanning
- Phosphoric Acids
- Smear Layer
- Surface Properties
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