Oral squamous cell carcinoma: epidemiological study and risk factor assessment based on a 39-year series.

Oral squamous cell carcinoma (OSCC) remains a challenge for head and neck surgeons, with low 5-year survival rates despite improvements in diagnostic techniques and therapies. This retrospective observational study was performed to evaluate the epidemiology and risk factors in a cohort of 666 patients with invasive OSCC over a 39-year period. Risk factors assessed were age, sex, toxic habits, premalignant lesions, tumour location and size, and neck involvement, and pathological factors such as surgical margins, tumour thickness, perineural invasion, and bone invasion.

Pathological mandibular fracture: A severe complication of periimplantitis.

Nowadays, dental implant treatment is a very common option for patients even in medical compromised conditons. Some complications related to them have been described. Periimplantitis (PI) is one of the biggest concerns complications of these kind of treatments, probably has a multifactorial aethiology.

A 12-year retrospective analytic study of the implant survival rate in 177 consecutive maxillary sinus augmentation procedures.

Purpose: This retrospective study sought to demonstrate the outcome of maxillary sinus elevation surgery in a series of 177 procedures performed over 12 years and to determine the existence of variables that could independently predict implant survival.

Materials And Methods: A retrospective descriptive and analytic study of a series of maxillary sinus elevation procedures performed between 1996 and 2007 was undertaken. The sample was composed of patients with severe atrophy of the posterior maxilla who had been rehabilitated with osseointegrated implants placed in grafted maxillary sinuses.

Influence of the upper joint surface and synovial lining in the outcome of chronic closed lock of the temporomandibular joint treated with arthroscopy.

Purpose: Temporomandibular joint (TMJ) arthroscopy has been reported to be an effective and reliable technique for the treatment of chronic closed lock (CCL) of the TMJ. The purpose of the present study was to evaluate whether the status of the joint surface and the synovial lining directly visualized with arthroscopy could determine postoperative results in patients with CCL of the TMJ.

Materials And Methods: In all, 257 of 500 patients (344 joints) fulfilled the inclusion criteria for CCL of the TMJ.

Bifocal transport osteogenesis for the reconstruction of adult calvarial defects: a new surgical technique.

Calvarial defects are common problems in craniofacial surgery. They may be explained by surgical interventions, infectious processes, cranial trauma or congenital anomalies. Calvarial defects are particularly challenging because they do not heal spontaneously in humans older than 24 months.