Influence of fluorescence-controlled Er:YAG laser radiation, the Vector system and hand instruments on periodontally diseased root surfaces in vivo.
OBJECTIVE
The aim of the present study was to evaluate the effects of fluorescence-controlled Er:YAG laser radiation, an ultrasonic device or hand instruments on periodontally diseased root surfaces in vivo.


METHODS
Seventy-two single-rooted teeth (n=12 patients) were randomly treated in vivo by a single course of subgingival instrumentation using (1-3) an Er:YAG laser (ERL1: 100 mJ; ERL2: 120 mJ; ERL3: 140 mJ; 10 Hz), or (4) the Vector ultrasonic system (VUS) or (5) hand instruments (SRP). Untreated teeth served as control (UC). Areas of residual subgingival calculus (RSC) and depth of root surface alterations were assessed histo-/morphometrically.


RESULTS
Highest values of RSC areas (%) were observed in the SRP group (12.5+/-6.9). ERL(1-3) (7.8+/-5.8, 8.6+/-4.5, 6.2+/-3.9, respectively) revealed significantly lower RSC areas than SRP. VUS (2.4+/-1.8) exhibited significantly lower RSC areas than SRP and ERL(1, 2). Specimens treated with SRP revealed conspicuous root surface damage, while specimens treated with ERL(1-3) and VUS exhibited a homogeneous and smooth appearance.


CONCLUSIONS
Within the limits of the present study, it may be concluded that ERL and VUS enabled (i) a more effective removal of subgingival calculus and (ii) a predictable root surface preservation in comparison with SRP.
Department of Oral Surgery, Heinrich Heine University, Düsseldorf, Germany. info@frank-schwarz.de
F
F
Schwarz
K
K
Bieling
S
S
Venghaus
A
A
Sculean
S
S
Jepsen
J
J
Becker
D000328:Adult; D000538:Aluminum Silicates; D003728:Dental Calculus / Q000532:radiotherapy / Q000628:therapy*; D012534:Dental Scaling / Q000295:instrumentation; D004871:Erbium; D005260:Female; D005453:Fluorescence; D006801:Humans; D053685:Laser Therapy; D008297:Male; D010510:Periodontal Diseases / Q000532:radiotherapy / Q000628:therapy; D010514:Periodontal Pocket / Q000532:radiotherapy / Q000628:therapy; D016745:Root Planing / Q000295:instrumentation; D013357:Subgingival Curettage / Q000295:instrumentation*; D014092:Tooth Root / Q000473:pathology*; D014464:Ultrasonic Therapy / Q000295:instrumentation*; D015019:Yttrium
D000538:Aluminum Silicates; D015019:Yttrium; D004871:Erbium