1362 Ozone and Sealent Treatment of Root Caries
L. STEIER, Private Practice, Mayen, Germany, and G. STEIER, Tufts University, Medford, MA, USA

Arrested root caries may need the use of flowable composite resins to improve esthetics. Objectives: To assess the efficacy of ozone (HealOzone, KaVo) to reverse shallow, non cavitated, leathery primary root caries lesions (PRCL's) which were approaching a hard consistency (J Dent Res 1993,73: 623-629) in an ageing patient group (>60, mean 72.3yrs, SD 5) and to subsequently assess the retention of a flowable composite resin to the ozone arrested lesions. Methods: A total of 62 subjects with 2 lesions each (124 PRCL's in total) were recruited. The lesions were randomly assigned into two groups; treated with ozone, or air. The Ozone treatment was applied by a different operator to the one recording the clinical criteria used to define the severity of the lesions. At baseline and at 1 month, the lesions were clinically assessed as soft, leathery or hard and received treatment as at baseline. At one month, all PRCL's were etched, and sealed using Bond-It and Flow-It (Pentron) and the subjects were recalled after a further 12 months. Results: After 1 month, 61 patients reattended. There were no observed adverse events. 60 of the ozone treated PRCL's had become hard and were therefore arrested, whilst only 24 of the control lesions arrested (p < 0.05). 56 subjects attended the 13 month recall. In the control group, 8 out of the 32 sealed non arrested PRCL's had a partial or complete loss of their sealant whilst in the test group only 2 of the 55 arrested PRCL's had a partial or complete loss of their sealant. Conclusions: Leathery non cavitated primary root caries, approaching a hard consistency can be arrested within one month after the use of ozone and the retention of sealants on these arrested lesions is very promising at 12 month recall.

Seq #155 - Clinical Research and Interventions
9:00 AM-10:30 AM, Friday, 11 March 2005 Baltimore Convention Center 328

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