IRCT2013061113639N1 IRCT 2013-07-29 Deputy For Research Construction of laser tooth brush ,laser aphthous pen and laser herpetic ulcer pen for improving of gum healthy and mouth wounds Comparision of a newly developed laser pen as a home care device versus conventional treatment in reduction of gingival inflammation reduction and acceleration of aphthous and herpetic lesion in up to 15 years old population 2012-04-20 anticipated 30 Complete https://irct.ir/trial/13444 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment. N/A periodontitis,aphthous ulcer,herpetic ulcer. Intervention 1: intervention lased group:The group one (n = 10) is treated with 660 nm, 40 mW, continuous wave, 566 mw/cm2, class 2M, for five consecutive days (twice per day, 30 seconds each session). Intervention 2: intervention group one (lased grouo):a laser tooth brush with wavelength 660nm, output power 40mw,spot size 3mm, power density 566mw/cm2,irradiation time 10 seconds energy, density5.66 J/cm2, laser tooth brush was perpendicularly applied during laser emission at the labial (buccal) interdental papilla ,every other two days. This method is applied by patient at home, after receiving the face to face education and after getting the best skill training at the office in order to use it at home by wearing eye glasses protector. Intervention 3: intervention lased group:The group one (n = 10) is treated with 655 nm, 40 mW, continuous wave, 655mw/cm2, class 2M, 30 seconds . this intervention is implemented for herpetic lesion in prodromal and vesicular stages but in the crust stage the laser setting will be the power of 40mw and 120 second irradiation time . Intervention 4: in the first control group for aphthous ulcer we will use non laser red light as placebo ,two times per day for 30seconds for 5 days. Intervention 5: inthe first control group for herpetic lesion we will use the nonlaser red light as placebo for30seconds in the primordial and vesicle stage and also for 120 seconds in the crust stage in one week. Intervention 6: in the second control group for aphthous ulcer we will use the adcortyl in orabase ointment,4 times per day for 5 days. Intervention 7: in thefirst control group for reduction of the gingival inflammation we will use the nonlaser red lihgt as placebo ,two times per day at the interdental papilla. Intervention 8: in the second control group for reduction of the gingival inflammation reduction we will use the tooth brush plus tooth paste two times per day. Intervention 9: in the second control group for herpetic lesion we will use the acyclovir ointment in the primordial and vesicle stage four times per day in oneweek.