Effect of an 810 nm Diode Laser on the Healing of a Periapical Abscess

Abstract

Introduction: The golden standard of the treatment of radicular cysts is mainly root canal therapy or surgical excision with apicectomy. The root canals are usually disinfected by the mechanical and chemical actions of instruments and chemical irrigating solutions respectively. To improve the efficacy of the root canal disinfection process, many techniques have been used and many researchers are still trying to reach the quickest and most convenient way to achieve this goal. Diode lasers have shown antibacterial activity on dentinal tubules, and they can penetrate more than 1000 μm into the dentin. Case Presentation: Our patient was a 25-year-old female with an infraorbital abscess caused by a non-vital maxillary canine with periapical radiolucency. After completing the conventional treatment, the optical fiber was inserted into the canal according to the working length previously measured. An 810 nm diode laser at the output power of 4 W was used to irradiate the root canals, with a 300 μm fiber. The patient was free of pain within a few days. The lesion was resolved in radiographic follow-ups, 3 and 6 months after the root canal treatment. Conclusion: A combination of conventional root canal therapy and an 810 nm diode laser is an effective treatment for non-vital teeth with periapical lesions.

Sodium Hypochlorite and Diode Laser in Non-Surgical Treatment of Periodontitis: Clinical and Bacteriological Study with Real Time Polymerase Chain Reaction (PCR)

“…The aim of this protocol was to add to the mechanical debridement, a chemical (NaOCl) disinfection and energy (light) that can penetrate beyond the limit of the mechanical debridement obtained with ultrasonic instrumentation. For instance, irradiation with a diode laser generates thermal and photo-disruptive energy leading to a sublethal damage of the bacteria present in contact with and near the site of irradiation [ 32 ]. The heat and photo-disruptive energy can reach deep areas that the conventional mechanical debridement cannot [ 32 , 33 , 34 ].…”

“…For instance, irradiation with a diode laser generates thermal and photo-disruptive energy leading to a sublethal damage of the bacteria present in contact with and near the site of irradiation [ 32 ]. The heat and photo-disruptive energy can reach deep areas that the conventional mechanical debridement cannot [ 32 , 33 , 34 ]. For instance, this might have increased the disinfection of the epithelial junction, the connective tissue and the periodontal ligaments [ 19 , 32 , 33 , 34 ].…”

“…The heat and photo-disruptive energy can reach deep areas that the conventional mechanical debridement cannot [ 32 , 33 , 34 ]. For instance, this might have increased the disinfection of the epithelial junction, the connective tissue and the periodontal ligaments [ 19 , 32 , 33 , 34 ]. In addition, the 980 nm wavelength is in the near infrared light that was shown to be able to directly kill pigmented bacteria that contain protoporphyrin IX such as Aggregatibacter actinomycetemcomitans [ 35 ].…”

A Comparative Histological Study of Gingival Depigmentation by 808 and 445 nm Diode Lasers

“…16 The most important concern about the clinical application of lasers is the intense heat produced by their irradiation. 17 Heat production can alter soft tissue microscopically through changes such as coagulation, vaporization, necrosis, carbonization, and denaturation. 18 At present, only a few studies have been published regarding assessing the effect of the diode laser histologically.…”