Intracanal Microbiological Contamination Reduction Using Low-intensity Laser Associated with a Photosensitizer - In Vivo Study in Teeth of Dogs.

This study evaluated the efficacy of photodynamic therapy using the photosensitizer azulene and low-intensity laser associated with standard root chemical-surgical preparation (performed with 0.5% sodium hypochlorite) in dogs. Twenty animals from the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, University of São Paulo (HOVET-FMVZ/USP) and treated at the Compared Dentistry Laboratory (Laboratório de Odontologia Veterinária [LOC]-FMVZ/USP) were included. Each subject possessed one single rooted tooth with complete root formation, pulp necrosis, complicated crown fracture and periapical bone rarefaction at the time of the radiographic examination. The endodontic treatment was performed in all dogs, which were divided into two equal groups. For group one, the standard chemical-surgical preparation was followed by the photodynamic therapy to evaluate the role of azulene after instrumentation. For group two, the photodynamic therapy was followed by the standard chemical-surgical preparation to evaluate the antimicrobial action of azulene before instrumentation. The results show that intracanal photodynamic therapy is efficient in eliminating unspecified bacterial and Enterococcus organism loads. In addition, this therapeutic modality reduces yeast contamination. The photodynamic therapy showed similar efficacy compared to standard chemical-surgical preparation. The application order of therapeutic modalities does not influence intracanal disinfection in both cases. This study shows that photodynamic therapy with low-intensity laser and azulene as a photosensitizer is a feasible alternative for improving treatment outcomes in routine practice of veterinary dentistry.

Endodontia, anatomia, fisiopatologia e terapia para afecções dos tecidos internos do dente / Endodontics, anatomy, phisiopatology and therapy of dental internal tissues lesions

A Endodontia é definida como o ramo da Odontologia que estuda a anatomia, função, fisiopatologia e terapia das afecções dos tecidos internos ao canal radicular do dente. Dentes que apresentem lesões do tecido pulpar necessitam de tratamento adequado, com base em alguns fatores, como idade, interpretação radiográfica, grau de contaminação e envolvimento do tecido periodontal, ou mesmo complicações iatrogênicas. A extração de um dente afetado é preferível a ignorar o problema; porém, atualmente, o Clínico pode oferecer ao cliente a opção de manter o dente, tanto pela função quanto estética, através de técnicas endodônticas

Endodontics is defined as the branch of Dentistry concerned with the study of anatomy, function, phisiopatology and therapy internal tissues within the root canal. Teeth that present endodontic lesion need adequate treatment, based on some factors such as age, radiographic interpretation, degree of infection, periodontal involvement and iatrogenic complications. The extraction of an affected tooth is preferable to ignoring the problem, but nowadays the Clinician can ofter the client the option of maintaining a tooth for both function and esthetics, using the endodontic tecniques

Endodontia, anatomia, fisiopatologia e terapia para afecções dos tecidos internos do dente / Endodontics, anatomy, phisiopatology and therapy of dental internal tissues lesions

A Endodontia é definida como o ramo da Odontologia que estuda a anatomia, função, fisiopatologia e terapia das afecções dos tecidos internos ao canal radicular do dente. Dentes que apresentem lesões do tecido pulpar necessitam de tratamento adequado, com base em alguns fatores, como idade, interpretação radiográfica, grau de contaminação e envolvimento do tecido periodontal, ou mesmo complicações iatrogênicas. A extração de um dente afetado é preferível a ignorar o problema; porém, atualmente, o Clínico pode oferecer ao cliente a opção de manter o dente, tanto pela função quanto estética, através de técnicas endodônticas(AU)

Endodontics is defined as the branch of Dentistry concerned with the study of anatomy, function, phisiopatology and therapy internal tissues within the root canal. Teeth that present endodontic lesion need adequate treatment, based on some factors such as age, radiographic interpretation, degree of infection, periodontal involvement and iatrogenic complications. The extraction of an affected tooth is preferable to ignoring the problem, but nowadays the Clinician can ofter the client the option of maintaining a tooth for both function and esthetics, using the endodontic tecniques(AU)