title: Laser irradiation inhibition of open gingival embrasure space after orthodontic treatment.
abstract: The purpose of this study was to investigate the inhibitory effect of low-energy laser irradiation on an incidence of open gingival embrasure space after orthodontic treatment. The patient was a 20-year, 7-month-old Japanese female with an Angle Class I malocclusion and crowding in the mandible. Treatment consisted of extraction of maxillary and mandibular first premolars and use of the Edgewise technique. A Ga-Al-As diode laser was used to irradiate an area of 0.5 cm2 at the labial and lingual gingival papilla between the canines. The time of exposure was 6 minutes for 3 days, carried out between the relevelling and en masse stages of movement. The total energy corresponding to 6 minutes of exposure varied from 1.90 J/cm2. There was no further evidence of open gingival embrasure space, except at the mandibular central incisor. Further: an improvement in the gingival inflammation caused by a periodontal disease was observed, and periodontal pocket depth was maintained. These results suggest that low-energy laser irradiation may inhibit the incidence of open gingival embrasure space after orthodontic treatment.
authors.affiliation: Department of Orthodontics, School of Dentistry, Nihon University, Japan. meguro@mascat.nihon-u.ac.jp
authors.forename: Daijiro
authors.initials: D
authors.lastname: Meguro
authors.forename: Masaru
authors.initials: M
authors.lastname: Yamaguchi
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Kasai
mesh_terms: D000328:Adult; D003481:Cuspid / Q000473:pathology; D005260:Female; D005881:Gingiva / Q000473:pathology* / Q000528:radiation effects; D005882:Gingival Diseases / Q000517:prevention & control*; D005891:Gingivitis / Q000517:prevention & control; D006801:Humans; D028022:Low-Level Light Therapy; D008311:Malocclusion, Angle Class I / Q000628:therapy*; D009971:Orthodontics, Corrective; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000517:prevention & control; D011879:Radiotherapy Dosage; D012690:Serial Extraction; D014087:Tooth Movement Techniques / Q000295:instrumentation