[Comparison of treatment effect between periodontal subgingival scaling with the special series of ultrasonic inserts and Gracey curette].

Objective: To compare the special series of ultrasonic inserts with Gracey curettes in the effectiveness and efficiency for non-surgical periodontal treatment.

Methods: A total of 30 patients with moderate to advanced chronic periodontal disease were treated with both ultrasonic inserts (ultrasonic group) and Gracey curettes (Gracey group) according to a prospective, randomized, controlled, one-blind, "split-mouth" design. Twenty-six cases were available for the whole follow-up period.