Tonsillotomy by a Fractional Carbon Dioxide Laser: A New Technique in the Treatment of Chronic Tonsillitis.

Chronic tonsillitis has a global prevalence, ranging from 5% to 12%. Its clinical manifestations, like recurrent acute tonsillitis, tonsils hypertrophy, caseum and halitosis, can lead adult patients to be submitted to palatine tonsillectomy, surgery that has morbidity and the potential risk of complications, including severe bleeding. This article proposes a new therapy for chronic tonsillitis in adult patients using a fractional carbon dioxide (CO2) laser, which is a fast, minimally invasive procedure capable of removing the need for the traditional tonsillectomy in many patients.

Polyethylene glycol fusion associated with antioxidants: A new promise in the treatment of traumatic facial paralysis.

Background: Recent studies in invertebrates have taught us that early cell membrane regeneration is determinant for axonal recovery and survival after trauma. Many authors obtained extraordinary results in neural regeneration using polyethylene glycol fusion protocols, which also involved microsutures and antioxidants.

Methods: Sixty rats were evaluated with functional and histological protocol after facial nerve neurotmesis.

Mandibular branch of the facial nerve in wistar rats: new experimental model to assess facial nerve regeneration.

Introduction The ideal animal model for nerve regeneration studies is the object of controversy, because all models described by the literature have advantages and disadvantages. Objective To describe the histologic and functional patterns of the mandibular branch of the facial nerve of Wistar rats to create a new experimental model of facial nerve regeneration. Methods Forty-two male rats were submitted to a nerve conduction test of the mandibular branch to obtain the compound muscle action potential.

Combined polyglycolic acid tube and autografting versus autografting or polyglycolic acid tube alone. A comparative study of peripheral nerve regeneration in rats.

Purpose: To compare sciatic nerve regeneration in rats using three different techniques of repair.

Methods: Fifteen isogonics rats were divided into three groups according to the method used to repair a 5-mm long defect created in the sciatic nerve: autogenous graft (Group A), polyglycolic acid tube (PGAt) (Group B), and of the association of PGAt with the graft (Group C). Histological analysis, regenerated myelinated axon number count and functional analysis were used to compare after six weeks.

Mesenchymal bone marrow stem cells within polyglycolic acid tube observed in vivo after six weeks enhance facial nerve regeneration.

Autografting is the gold-standard method for facial nerve repair with tissue loss. Its association with high-quality scaffolds and cell implants has disclosed distinct experimental outcomes. The aim of this study was to evaluate the functional and histological effects of bone marrow stem cells (BMSC) combined with polyglycolic acid tube (PGAt) in autografted rat facial nerves.

Quantitative histological analysis of the mandibular branch of the facial nerve in rats.

Purpose: To establish a model to quantitative histological analysis of the mandibular branch of the facial nerve in rats.

Methods: Eleven Wistar rats had their right and left mandibular branches of the facial nerve surgically removed and were sacrificed afterwards. Quantitative histological analysis was performed with: a) partial number of axons; b) partial area of the transversal cut of the nerve (9000 μm(2)); c) partial density.

Assessment of a neurophysiological model of the mandibular branch of the facial nerve in rats by electromyography.

Objectives: Our objective was to develop an experimental model for the noninvasive and objective evaluation of facial nerve regeneration in rats using a motor nerve conduction test (electromyography).

Methods: Twenty-two rats were submitted to neurophysiological evaluation using motor nerve conduction of the mandibular branch of the facial nerve to obtain the compound muscle action potentials (CMAPs). To record the CMAPs, we used two needle electrodes that were inserted into the lower lip muscle of the rat.

Evaluation of the systemic use of riluzole in post-traumatic facial nerve regeneration: experimental study in rabbits.

Conclusions: Riluzole promoted increase and/or preservation of axon density in the animals treated with this drug as compared to the control group; it did not increase the mean diameter of facial nerve fibres as compared to the non-treated group; and it did not provide a better functional motor recovery than in the control group.

Objective: Traumatic peripheral facial paralysis is a frequent affection. In incomplete nerve injuries, systemic drugs acting on regeneration may decrease the patient's period of morbidity.

Experimental comparative study in rabbits of three different ways of cartilage graft fixation: suture, gelatin-resorcin-formaldehyde and butyl-2-cyanoacrylate.

Conclusion: The compound gelatin-resorcin-formaldehyde (GRF) was a better stabilizing material for cartilage grafts in rabbits than butyl-2-cyanoacrylate. GRF was also better than the suture when comparing fixation of cartilage to the periosteum and inflammatory reaction.

Objective: Cartilage grafting is an interesting option for refinements on rhinoplasties.

Posttraumatic facial nerve regeneration in rabbits.

Unlabelled: Posttraumatic facial paralysis is a frequent disease. This work studies posttraumatic regeneration of the facial nerve in rabbits. Functional and histological analysis compared injured and normal nerves on opposite sides.

Comparison of butyl-2-cyanoacrylate, gelatin-resorcin-formaldehyde (GRF) compound and suture in stabilization of cartilage grafts in rabbits.

Unlabelled: Cartilage grafting is an interesting option for rhinoplasties refinements.

Aim: To compare butyl-2-cyanoacrylate, compound gelatin-resorcin-formaldehyde (GRF) and suture control to determine the efficacy of these tissue glue preparations in securing grafted cartilage.

Study Design: Experimental.