title: Non-surgical periodontal treatment with a new ultrasonic device (Vector-ultrasonic system) or hand instruments.
abstract: OBJECTIVE
  The aim of this prospective, randomized, controlled clinical study was to compare the effectiveness of a newly developed ultrasonic device to that of scaling and root planing for non-surgical periodontal treatment.
  
  
  METHODS
  Thirty-eight patients with moderate to advanced chronic periodontal disease were treated according to an "one-stage procedure" with either a newly developed ultrasonic device (VUS) (Vector-ultrasonic system) or scaling and root planing (SRP) using hand instruments. Clinical assessments by plaque index (PlI), gingival index (GI), bleeding on probing (BOP), probing depth (PD), gingival recession (GR), and clinical attachment level (CAL) were made prior to and at 6 months after treatment. Differences in clinical parameters were analyzed using the Wilcoxon signed ranks test and Mann and Whitney U-test.
  
  
  RESULTS
  No differences in any of the investigated parameters were observed at baseline between the two groups. The mean value of BOP decreased in the VUS group from 32% at baseline to 20% after 6 months (p<0.001) and in the SRP group from 30% at baseline to 18% after 6 months (p<0.001). The results have shown that at moderately deep sites (initial PD 4-5 mm) mean CAL changed in the test group from 4.6+/-1.2 to 4.2+/-1.6 mm (p< 0.001) and in the control group from 4.8+/-1.3 to 4.4+/-1.5 mm (p<0.001). At deep sites (initial PD>6 mm) mean CAL changed in the test group from 8.5+/-1.9 to 7.9+/-2.4 mm (p<0.001) and in the control group from 7.9+/-1.6 to 7.2+/-2.2 mm (p<0.001). No statistically significant differences in any of the investigated parameters were found between the two groups.
  
  
  CONCLUSIONS
  Non-surgical periodontal therapy with the tested ultrasonic device may lead to clinical improvements comparable to those obtained with conventional hand instruments.
authors.affiliation: Department of Periodontology and Operative Dentistry, Johannes Gutenberg-University, Mainz, Germany. anton.sculean@gmx.de
authors.forename: Anton
authors.initials: A
authors.lastname: Sculean
authors.forename: Frank
authors.initials: F
authors.lastname: Schwarz
authors.forename: Mohammad
authors.initials: M
authors.lastname: Berakdar
authors.forename: Georg E
authors.initials: GE
authors.lastname: Romanos
authors.forename: Michel
authors.initials: M
authors.lastname: Brecx
authors.forename: Britta
authors.initials: B
authors.lastname: Willershausen
authors.forename: Jürgen
authors.initials: J
authors.lastname: Becker
mesh_terms: D002908:Chronic Disease; D003774:Dental Plaque Index; D012534:Dental Scaling / Q000295:instrumentation; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000628:therapy; D005889:Gingival Recession / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D017622:Periodontal Attachment Loss / Q000628:therapy; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000628:therapy; D010518:Periodontitis / Q000628:therapy*; D011446:Prospective Studies; D015203:Reproducibility of Results; D016745:Root Planing / Q000295:instrumentation; D018709:Statistics, Nonparametric; D016896:Treatment Outcome; D014464:Ultrasonic Therapy / Q000295:instrumentation*