Fluorescence visualization improves the detection of oral, potentially malignant, disorders in population screening.

Background: Scientific literature shows the great potential of fluorescence visualization (FV) in the detection of lesions in the skin and mucosa, though its use has been intermitant. Thus, the aim of this study was to compare the detection of oral cancer and oral potentially malignant disorders (OPMD) with and without the use of fluorescence visualization in population screening.

Patients And Methods: During a population screening for oral cancer and OPMD, general practice dentists (GPD) performed conventional oral examination (COE) in the first year, and in the second year the FV was inserted in the oral examination.

Fluorescence visualization efficacy for detecting oral lesions more prone to be dysplastic and potentially malignant disorders: a pilot study.

Background: To analyze the efficacy of fluorescence visualization in early detection of oral early neoplastic processes when used by an inexperienced and an adept oral examiner.

Methods: A dental student and an expert professional in oral diagnosis examined 15 randomly selected patients using conventional oral examination and fluorescence visualization searching for early signs of epithelial dysplasia and oral potentially malignant disorders. Patients detected with oral lesions in any of examinations were submitted to incisional biopsy for definitive diagnosis.

Laser therapy in bone repair in rats: analysis of bone optical density.

Objective: To investigate, by digital radiology, the bone regeneration process in rats submitted to femoral osteotomy and treated with low power laser therapy.

Methods: Forty-five Wistar rats were subjected to transverse osteotomy of the right femur and divided randomly into three experimental groups (n = 15): animals not treated with laser therapy G (C), animals that received laser therapy with λ: 660nm G (660nm) and animals that received laser therapy with λ: 830nm G (830nm). Animals were sacrificed after 7, 14 and 21 days.

Effects of low-level laser therapy (LLLT) on bone repair in rats: optical densitometry analysis.

The aim of this study was to evaluate the process of bone repair in rats submitted to low-level laser therapy using optical densitometry. A total of 45 rats which underwent femoral osteotomy were randomly distributed into three groups: control (group I) and laser-treated groups using wavelengths in the red (λ, 660-690 nm) and in the infrared (λ, 790-830 nm) spectra (group II and group III, respectively). The animals (five per group) were killed after 7, 14, and 21 days and the femurs were removed for optical densitometry analysis.