Journal of Conservative Dentistry
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Year : 2014  |  Volume : 17  |  Issue : 5  |  Page : 427-431

Effect of oxalic acid pre-treatment in restorations of non-carious cervical lesions: A randomized clinical trial

1 Faculty of Pharmacy, Dentistry and Nursing, Post Graduate Program in Dentistry, Department of Restorative Dentistry, Federal University of Ceara, Brazil
2 Faculty of Pharmacy, Dentistry and Nursing, Post Graduate Program in Dentistry, Department of Restorative Dentistry, Federal University of Ceara; School of Dentistry, University of Fortaleza, Fortaleza-Ce, Brazil

Correspondence Address:
Sergio Lima Santiago
Rua Monsenhor Furtado, s/n Rodolfo Teófilo, 60.430-355, Fortaleza-CE
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.139825

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Context: Non-carious cervical lesions are usually associated with dentin hypersensitivity. The use of oxalic acid in restorations of these lesions could be beneficial in relieving pain. Aims: To evaluate the use of oxalic acid in restorations of non-carious cervical lesions. Settings and Design: A randomized clinical trial. Subjects and Methods: One operator placed 90 restorations in 20 volunteers of both sexes, with at least two lesions to be restored with the techniques: Control - Restoration with total-etch technique and Experimental - Restoration with pretreatment with oxalic acid followed by application of adhesive system. The restorative adhesive system used was XP Bond/Durafill. The restorations were directly assessed by two independent examiners using a modified United States Public Health Service (USPHS) method at baseline, 6 and 12 months, taking into account the following criteria: Retention (R), marginal integrity (MI), marginal discoloration (MD), postoperative sensitivity (S), caries (C), and anatomic form (AF). Statistical analysis used: The data were statistically analyzed using the Fisher exact and McNemar tests. The level of significance was set at 5%. Results: After 1 year, the results of restorations clinically satisfactory obtained for the control and experimental group respectively were: R (97% / 89%), MI (100% / 100%), MD (100% / 100%), S (100% / 100%), C (100% / 100%), and AF (100% / 100%). Conclusions: The use of oxalic acid as an agent of dentin pretreatment did not influence the clinical performance of restorations in non-carious cervical lesions after 1 year.

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