1151 Effectiveness of Root Planing with Diode Laser Curettage for Periodontitis

Friday, March 23, 2012: 3:30 p.m. - 4:45 p.m.
Presentation Type: Poster Session
J. ZINGALE, Periodontics, University of the Pacific, San Francisco, L. HARPENAU, Periodontics, University of the Pacific, San Francisco, CA, D. CHAMBERS, Dental School, University of the Pacific, San Francisco, CA, and W. LUNDERGAN, University of the Pacific, San Francisco, CA
Objective: This study investigated the effectiveness of scaling/root planing (SRP) using a closed approach, closed approach with laser-curettage, closed approach with laser-curettage/sealing, and open approach (papillae reflection) in treating moderate-advanced chronic periodontitis.

Methods:   Twenty-five subjects with five probing depths (PD) measuring 5-9mm with bleeding on probing (BOP) participated.  Each site was randomly assigned to one of the following: (1) SRP only; (2) papillae reflection/SRP/flap closure; (3) laser-curettage(Odyssey Navigator)/SRP; (4) laser-curettage/SRP/laser-disinfection/sealing; and (5) no treatment (control).  Using a custom-fabricated vacuform stent, a single examiner measured PD and clinical crown length (CCL).  Sites were re-examined at 3 and 6 months.  Supportive periodontal therapy was provided at 3 months.  Patients followed their usual oral hygiene regimens.  Repeated measure ANOVA and student t-test were used for analysis. 

Results: All treatments resulted in reduction of PD (average=1.74mm) and BOP (100% at baseline/30% at 3 months/31% at 6 months).  The greatest decrease in average PD was at 3 months with Groups 4 and 2.  However, the differences were not significant (p>0.05) between the treatment groups (table).  CCL did not significantly differ among the therapies.  However, Group 2 showed the greatest increase (1.05mm/3 months) (p<0.05) from the control (0.15mm/3 months), while the others showed an average increase of 0.39mm at 3 months.



(1) SRP only


(3) L/SRP

(4) L/SRP/L/S


3 months






6 months











Conclusion: Groups 3 and 4 did not signficantly differ from Groups 1 or 2 in decreasing PD/BOP.  Although there were no significant differences in CCL between therapies, group 2 showed the greatest increase (largest amount of recession).  Groups 1 and 3 healed with minor recession and mostly by soft tissue repair or a long junctional epithelial attachment.  If there is an esthetic concern, the laser curettage would be preferable. 

This abstract is based on research that was funded entirely or partially by an outside source: Ivoclar Vivadent, Inc

Keywords: Clinical trials, Lasers, Periodontal disease and Periodontics
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