3467 Reversal of Caries Using Airbrasion and Ozone- Nine Month Results
C.P.S. CLIFFORD, Private Practice, Isle of Wight, United Kingdom

Aim: To investigate the effects of air abrasion, ozone application and sealing on carious approximal lesions in posterior teeth. Methods: Deep approximal dentinal carious lesions, that would normally be assessed as ‘requiring drilling and filling', were selected. All lesions were visible on radiographs.. 34 patients involving 34 teeth were treated with airbrasion and Ozone and another 34 control teeth were treated conventionally in the same patients. Treatment times were recorded.Access to the test lesions were obtained (without local analgesia) using airbrasion ( DV1 Crystal Air, Abradent) and after probing, leathery caries was left covering the entire pulpal floor. Once access to the caries was established, ozone was applied for 40 seconds using a HealOzone unit (CurOzone USA and KaVo Germany). A glass ionomer restorative (Fuji 7 (GC) restored the cavities. After 3 months the restoration was carefully disected and the cavity was thoroughly probed again to measure hardness, before a conventional composite resin restoration was placed. All Patients were recalled at 9 months. Results: All Ozone treated restorations were symptomless throughout the 9 months. All 34 Fuji 7 restorations, removed after 3 months recall, showed hard ‘caries' to exploration suggesting remineralisation was successful. All lesions were successfully exposed and a seal established for the delivery of ozone at baseline. The airbrasion and Ozone technique was significantly faster (lesions were exposed, ozonated and sealed in under 7 minutes) than conventional drilling and filling (P<0.05). Conclusions: Approximal lesions can be successfully treated using an airbrasion/ozone combination in less time than conventional drilling and filling.

Seq #359 - Clinical Preventive and Restorative Studies
10:15 AM-11:30 AM, Saturday, 13 March 2004 Hawaii Convention Center Exhibit Hall 1-2

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