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Sealing manifest occlusal caries in permanent teeth -- 2.5-year results

San Diego, Calif., USA Today, during the 89th General Session & Exhibition of the International Association for Dental Research, held in conjunction with the 40th Annual Meeting of the American Association for Dental Research and the 35th Annual Meeting of the Canadian Association for Dental Research, lead researcher V. Qvist will hold an oral presentation on a research study titled "Sealing Manifest Occlusal Caries in Permanent Teeth - 2-year Results."

This research was performed under the objective of investigating the possibility of non-operative sealing of manifest occlusal caries lesions which otherwise would have been treated with conventional restoration. This prospective, randomized study was performed in the young permanent dentition with two parallel treatment arms. The material includes 523 occlusal caries lesions in 523 patients aged 6-17 years. All lesions were assessed to be in need of operative treatment and were limited to the outer half of the dentin. Informed consent was obtained from the patients/parents.

After randomization in the ratio of 2:1, 370 resin sealants and 153 resin restorations were carried out by 72 public dentists from August 2006 to November 2009. The treatments were followed by annual clinical and radiographic control examinations. Chi-square tests were applied for statistical comparisons between sealants and restorations.

After an average observation period of 2 years, the dropout rate was 3 percent. Of the sealants 76 percent were well-functioning, 10 percent were repaired or renewed, and 15 percent were replaced by restorations. Of the restorations, 96 percent were well-functioning and 4 percent were extended or replaced, which was significantly different compared with the sealant group (p<0.001). The radiographic assessment showed caries progression in 11 percent of the sealed teeth and 1 percent of the restored teeth (p<0.001).

The majority of the sealed lesions were successfully arrested during the first 2 years. Thus, the results indicate the possibility of extending the criteria for non-operative sealing of occlusal caries lesions in the young permanent dentition. However, a longer observation period is needed for final conclusion, and treatments will be followed for at least 5 years.


Contact: Ingrid L. Thomas
International & American Association for Dental Research

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