0080 Clinical Assessment of Ozone on Root Caries
A. BAYSAN, University of Birmingham, Dental School, United Kingdom, and E. LYNCH, Queens University Belfast

Objectives: The objective was to assess the safety and efficacy of a ozone delivery system1 with or without a root sealant2 for the management of root caries.

Methods: A total of 80 patients with 226 PRCLs were selected. Group 1 had only ozone treatment, Group 2 had neither ozone nor root sealant, whilst Group 3 had both ozone and sealant and Group 4 had only sealant. At baseline, and after 1, 3, 6, 9 and 12 months, the Electrical Caries Monitor3(ECM)and DIAGNOdent4 were employed. Lesions were clinically assessed. Modified USPHS criteria were also performed.

Results: After 12 months, 75 patients completed. There were no observed adverse events. 47% of PRCLs reversed from severity index 1 to 0 (i.e., hard) in the ozone only group, whilst none of the lesions became hard in the control group (p < 0.001) and 52% of lesions reversed from severity index 2 to 1 in the ozone group compared to only 11.6% in the control group (p < 0.001). Modified USPHS criteria revealed that there were 61% of intact sealants in the ozone and sealant group and 26.1% of intact sealants in the sealant only group (p < 0.05). After 1, 3, 6, 9 and 12 months, the ECM and DIAGNOdent readings showed improvements in the ozone only group when compared to the control group (p < 0.001). The ozone and sealant group also had greater improvements in the ECM and DIAGNOdent values when compared to the sealant only group (p < 0.05). Conclusions: Leathery root caries can be managed non-operatively using ozone. The sealant was retained better on ozone treated lesions. Ozone treatment is a cost-effective, easy and rapid method on root caries.

1HealOzone unit, CurOzone USA,2Seal and Protect, Dentsply, Germany,3LODE Diagnostics, Netherlands, 4Kavo,Germany

Seq #15 - Keynote Address and Clinical Care
2:00 PM-4:00 PM, Wednesday, 10 March 2004 Hawaii Convention Center 305-A

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