Evaluation of the viability of the use of the medium power diode laser in Periodontics: physical and biological aspects

Author(s)

Carla Raquel Fontana Mendonça

• Document type: Master's Dissertation
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC/BT)
• Defense date: 2003-02-25

Examining board members

Vanderlei Salvador Bagnato; Antônio José da Costa Filho; Benedicto Egbert Corrêa de Toledo

• Advisor: Vanderlei Salvador Bagnato

Abstract

Diode lasers are modern devices still searching application in dentistry. As an alternative to be applied in periodontal treatment, diode laser can substitute the conventional solid state lasers like Nd:YAG and Er:YAG with tremendous advantage in cost and facility of use. This work has the aim to demonstrate the use of medium power diode laser in the treatment of periodontal disease. For this purpose a sequence of experiments were carried out using (Diodo FTC 1200, OPTO® São Carlos − Brasil). First we investigated the thermal effect on the adjacent tissue when the laser is used having the periodontal chamber as a target. Second, using an animal model we explored the efficiency of bacteria elimination when diode laser is used. Several types of bacterias as Streptococcus betahemolitica, Prevotella sp, Fusobacterium sp, Pseudomonas sp, Escherichia coli, Proteus mirabilis, Enterobacter sp, Candida sp were investigated. In a final observation, the histological exam was performed. A good preservation as well as evidence of strange bodies were observed. In conclusion we established that diode lasers are an appropriate tool for periodontal care (AU)