The purpose of this preliminary, double-blind, placebo-control study was to evaluate the effect of GaAlAs diode laser on wound healing and pain reduction in patients after extraction of impacted lower third molars by infrared thermography. Material and methods: The study population of two patients was divided into group A treated by GaAlAs diode laser with a wavelength 830 nm and maximal output power of 100 mW and group B treated by placebo laser. Therapeutic Schedule: The energy density per point was 12 J, treatment time 2 minutes, the total energy density for one treatment session was 36 J. Treatment intervals were 10 minutes after extraction, 1 and 3 days after extraction. Patients in group B were treated with a placebo probe in the same schedule. Patients evaluated the level of pain and swelling on 100 mm Visual Analog Scale. Thermographic measurements were performed by ThermaCAMTM SC 2000 before extraction, 30 minutes after extraction and on the 1st, 3rd, 5th, 8th days. Results: The patient treated by active laser reported more pain and swelling during the first week after tooth extraction than the patient treated by placebo laser. However, the comparison of thermograms of patients treated by placebo and active laser showed the acceleration of wound healing after extraction in the patient treated with GaAsAl diode laser. Conclusion: The treatment by GaAlAs diode laser, 830 nm and total energy density for one treatment session 36 J had a stimulation effect on the healing process but did not lead to reduction of pain and swelling in the patient after dental surgery.
GaAlAs diode laser; wound healing; pain; infrared thermography; tooth extraction
Biagioni PA, McGimpsey JG, Lamey P-J: Electronic infrared thermography as a dental research technique. Br Dent J 180:226-230, 1996.
Bonezzi C, Miotti D, Demartini Volta GD: Thermography and chronic pain syndromes. Thermologie Osterreich 6:62-65, 1996.
Garcia GA, Gude FS, Gandara JR, Gandara PV, Somoza MM: Pell-Gregory classification is unreliable as a predictor of difficulty in extracting impacted lower third molars. Br J Oral Maxillofac Surg 38:585-587, 2000.
Gratt BM, Shetty V, Saiar M, Sickles EA: Electronic thetmography for assessment of inferior alveolar nerve deficit. Oral Surg Oral Med Oral Pathol Oral Radiol Endo 80:153-160, 1995.
Mc Gimpsey JG, Vaidya A, Biagiony PA, Lamey P-J: Role of thermography in assesssment of infraorbital nerve injury after malar fractures. Br J Oral Maxillofac Surg 37:581-584, 1999.
Santiago S, Ferrer T, Espinosa ML: Neurophysiological studies of thin myelined (A delta) and unmyelited (C) fibers: application to peripheral neuropathies. Neurophysiol Clin 30:27-42, 2000.
Shetty V, Gratt BM, Flack V: Thermographic assesment of reverzible inferior alveolar nerve deficit. J Orofacial Pain 8:375-383, 1994.
Simunovic Z (ed): Lasers in medicine and dentistry. DTP studio Vitagrad, Rijeka, 2000.
Special report. Joint Council of State Neurosurgical societies of American Association of Neurological Surgeons and the Congress of Neurological surgeons. Available at http://www.thermascan.com
Navratil L, Dylevsky I: Mechanisms of biostimulating effects of therapeutics laser in vivo. Sborn Lek 97:521-527, 1996.
Navratil L (ed): Modern phototherapy and laser therapy (in Czech). MANUS, Praha, 2000.
Navratil L, Navratilova B: Possibilities of the treatment of certain diseases in stomatology with the help of noninvasive laser therapy. Progress in Biomedical Optics and Imaging 37:273-279, 2000.
Navratil L, Navratilova B, Knizek J, Erosova Z, Fikackova H, Kymplova J: Possibilities of current use of non-invasive laser therapy and systemic enzymotherpy in stomatology. J Appl Biomed 1:13-19, 2003.
Tuner J, Hode L (ed): Low level laser therapy. Clinical practice and scientific backgraund. Prima Books, Sweden AB, 1999.
Uematsu S: Thermographic imaging of cutaneus sensory segment in patients with periferal nerve injury: skin - temperature stability between sides of body. J Neurosurg 62:716-720, 1985.
Venta I, Hyrkas T, Paakkari I, Ylipaavalniemi P: Thermographic Imaging of postoperative inflammation modified by anti-inflammatory pretreatment. J Oral Maxillofac Surg 59:145-150, 2001.
Brignardello-Petersen R, Carrasco-Labra A, Araya I, Yanine N, Beyene J, Shah PS. Is Adjuvant Laser Therapy Effective for Preventing Pain, Swelling, and Trismus After Surgical Removal of Impacted Mandibular Third Molars? A Systematic Review and Meta-Analysis. J Oral Maxillofacial Surg. 70: 1789-1801, 2012.
Jovanovic G, Buric N, Krunic N, Tijanic M, Stojanovic S. Assessment of the effectiveness of low level laser in the treatment of alveolar osteitis. Vojnosanitelski Pregled. 68: 506-510, 2011.
Preoteasa E, Iosif L, Amza O, Preoteasa CT, Dumitrascu C. Thermography, an imagistic method in investigation of the oral mucosa status in complete denture wearers. J Oproelectronic Advanced Materials. 12: 2333-2340, 2010.