Micro-CT analysis of the mandibular bone microarchitecture of rats after radiotherapy and low-power laser therapy.

To investigate whether low-level laser therapy (LLLT), at different times of application (immediate and late) in the region of the parotid glands, has a distance effect on the microarchitecture of the trabecular bone in mandible of rats irradiated by volumetric modular arc therapy (VMAT). Thirty adult Wistar rats were randomly divided into placebo control groups (CG, n = 2), only radiotherapy (RG, n = 2), only LPLT (LG, n = 2), and two other groups using LLLT in the immediate time (24 h) (ILG, n = 12) and late (120 h) (LLG, n = 12) to radiotherapy by VMAT in a single dose of 12 Gy. LLLT with AsGaAl laser (660 nm, 100 mW), a spot size of 0.

Local and systemic tissue response submitted to injection of 2 and 30% polymethylmethacrylate in rats' tongue.

Introduction: Adverse effects on the oral mucosa after the use of dermal fillers have been reported due to their increased use for facial aesthetics.

Objective: This study aimed to evaluate, clinically and histologically, the local and systemic effects of two concentrations of polymethylmethacrylate (PMMA) dermal filler in rats.

Material And Methods: Fifty-four female rats were allocated into three treatment groups (2% PMMA, 30% PMMA and 0.

Collagen and elastic fibers in odontogenic entities: analysis using light and confocal laser microscopic methods.

Dentigerous cyst (DC) and keratocystic odontogenic tumor (KOT) are odontogenic lesions arising from epithelial elements, such as those observed in dental follicles (DF), that have been part of the tooth forming apparatus. These lesions show different clinical and histological characteristics, as well as distinct biological behavior. This study aimed to qualify and quantify collagen and elastic fibers by means of histochemical techniques with light and confocal laser microscopic methods in three odontogenic entities.

Use of polymethylmethacrylate as permanent filling agent in the jaw, mouth and face regions--implications for dental practice.

Objectives: This article is a review of PMMA focusing on its properties, indications, contra-indications and adverse effects.

Background: search to remain young is a constant attitude among Brazilians. The low cost of filling agents have stimulated its indiscriminate use, especially the bioplasty (non-incisional method).

Self-mutilation of tongue and lip in a patient with simple schizophrenia.

Self-inflicted lesions that cause mutilation are observed in schizophrenic patients. This case report describes the diagnosis and treatment of simple schizophrenia in a 31-year-old male patient who bit his own tongue and lower lip. The dental treatment proposed included the construction of a splint to prevent new lesions and to allow healing of existing ones.

Peripheral clear cell variant of calcifying epithelial odontogenic tumor affecting 2 sites: report of a case.

A case of clear cell variant of calcifying epithelial odontogenic tumor (CEOT) affecting 2 different extraosseous sites is described. A 43-year-old female patient presented with 2 gingival lesions (1 in the upper premolar and 1 in the lower incisor area), which were clinically diagnosed as inflammatory hyperplasia and surgically removed. Microscopically, both lesions were composed of polyhedral cells (some with clear cytoplasm); hyaline material and areas of calcification were also observed.