Effect of 980-nm diode laser–aided circumferential supracrestal fiberotomy on fluorosed root surfaces

Abstract

Objective: To evaluate and compare the root surface morphological changes after 980-nm diode laser-aided circumferential supracrestal fiberotomy (CSF) on fluorosed and non-fluorosed teeth. Materials and Methods: The sample comprised 27 orthodontic patients (14 males and 13 females; mean age 5 17.3 years) with and without fluorosis, from whom 40 fluorosed and 40 nonfluorosed premolar teeth were extracted for orthodontic reasons. Conventional (control group) and laser-aided (experimental group) CSF was performed on fluorosed and non-fluorosed teeth indicated for orthodontic extraction, using a scalpel and a 980-nm diode laser at 2.5 W power, respectively. Subsequently, teeth were extracted, sectioned, and examined by scanning electron microscope to assess the ultrastructural changes. Results: There were differences in surface morphology among fluorosed and non-fluorosed roots in the control group. The root specimens of both fluorosed and non-fluorosed teeth irradiated by diode laser exhibited no evidence of smear layer, laser-induced pitting or cavitation, linear cuts/ markings, carbonization of surface, and heat-induced surface cracking. However, a glazed or slightly melted appearance was observed in root specimens of fluorosed teeth after diode laser irradiation. Conclusions: These findings suggest that the diode laser-aided CSF procedure is free from thermal hazard on non-fluorosed root surfaces but may provoke some thermal changes on fluorosed root surfaces. (Angle Orthod. 2013;83:425-430.)

Rotational relapse of anterior teeth following orthodontic treatment and circumferential supracrestal fiberotomy

“…The present findings are consistent with previous reports of a significant reduction in the relapse of orthodontically rotated teeth following CSF performed as an adjunct to mechanical retention ( Dhingra et al, 2013 , Littlewood et al, 2006 , Young et al, 2013 , Pinson and Strahan, 1974 , Taner et al, 2000 ). Interestingly, by 12 months after retention, we found a mean relapse rate of 10.8% for teeth subjected to fiberotomy; this was similar to the rate in a controlled study reported by Crum and Andreasen ( Crum and Andreasen, 1974 ), indicating the potentially stabilizing effect of fiberotomy on orthodontically rotated teeth.…”

“…These findings led us to speculate that circumferential supracrestal fiberotomy (CSF) would release the tension on the supra-alveolar fibers following tooth rotation, thereby reducing the risk of rotational relapse ( Lv et al, 2009 ). Further studies have validated the effect of CSF on reducing this type of relapse ( Block et al, 1998 , Dhingra et al, 2013 , Littlewood et al, 2006 ). However, it is important to note the amount and location of relapse for proper clinical evaluation.…”

Fluorosis and periodontium: A report of our institutional studies

“…[18] and showed that there were differences in surface morphology among fluorosed and nonfluorosed roots in the control group. The root specimens of both fluorosed and nonfluorosed teeth irradiated by diode laser exhibited no evidence of smear layer, laser-induced pitting or cavitation, linear cuts/ markings, carbonization of surface, and heat-induced surface cracking.…”

“…[16] Effect of desensitizing agents on fluorosed and nonfluorosed teeth-in vitro Scanning electron microscope analysis • SEM study to evaluate the effect of densitizing agents on dentinal tubular morphology in fluorosed teeth. [17] Effect of 980-nm diode laser-aided circumferential supracrestal fiberotomy (CSF) on fluorosed root surfaces [18] Ongoing Projects • Effect of topical application of guduchi gel (herbal extract) in the treatment of periodontitis in fluorosed and nonfluorosed patients. Clinical studies to evaluate the peridontal changes caused by fluorosis [2] Though the effect of fluoride on reduction of dental caries is well-established, its effect on periodontal tissues is obscure.…”

Un enfoque actual sobre la fibrotomía como terapia para evitar recidiva en los tratamientos de ortodoncia. Una revisión

“…En la actualidad, han sido propuestos nuevos métodos para llevar a cabo la FCS, entre los cuales están la terapia láser de bajo nivel, la electrocirugía y la asistida con láser, mas los resultados aún no son del todo claros ( [16][17][18][19][20][21][22][23][24][25] ). Por tanto, el objetivo de la presente revisión es conocer una visión actual de la técnica de FSC, la evolución de esta técnica y las nuevas tendencias para realizarla a través de una evaluación contemporánea de la literatura científica.…”