Deproteinated bovine bone vs. beta-tricalcium phosphate as bone graft substitutes: histomorphometric longitudinal study in the rabbit cranial vault.

Objectives: This article aims to study differences in the bone formation and the graft resorption of two bone graft substitutes (BGS). Besides, it is our attempt to observe possible qualitative and quantitative differences in the bone reparation of the outer layer covered by collagen membrane and the uncovered inner layer in close contact with dura mater.

Material And Methods: Twelve rabbits were employed.

Maxillary changes and occlusal traits in crania with artificial fronto-occipital deformation.

Artificial fronto-occipital deformation of the cranial vault was typical of pre-Columbian cultures in the central Andean coastal regions. We have studied the influence of this deformation on maxillary and mandibular morphology. Measurements were performed on 86 adult Ancon skulls with anteroposterior deformation.

Speech and swallowing impairment after treatment for oral and oropharyngeal cancer.

Objectives: To assess the prevalence of speech and swallowing impairment after radical surgery for oral and oropharyngeal cancer from the patient's viewpoint and to examine the association of these functional alterations with selected clinical characteristics regarding patients, tumors, and oncologic treatment.

Design: Cross-sectional, multicenter study using a self-administered questionnaire.

Setting: Forty-three hospitals in Germany, Switzerland, and Austria.

Immunohistochemical expression of HIF-1alpha in response to early myocardial ischemia.

This study aims to evaluate the effects of ischemia on the myocardial fibers and the expression of the transcriptional factor for angiogenesis hypoxia-inducible factor-1 alpha (HIF-1alpha) in human heart specimens. We have prospectively analyzed the HIF-1alpha expression in human ischemic hearts with the ABC-inmunohistochemistry technique and amplification by biotinylated tyramide. The relationship between the expression of HIF-1alpha and the temporal evolution of ischemia has also been evaluated.

Predictive value of oral candidiasis as a marker of progression to AIDS.

Objective: To determine the validity of oral candidiasis (OC) as a clinical marker of progression in patients with human immunodeficiency virus infection.

Study Design: In 1992, an oral examination was carried out on a group of 200 HIV-infected patients with a mean age of 36.8 +/- 7 years (range 25-46 years) to establish the diagnosis of OC.

Comparative study of locking plates in mandibular reconstruction after ablative tumor surgery: THORP versus UniLOCK system.

Purpose: This retrospective study compared 2 types of rigid locking plates (THORP and UniLOCK; Stratec Medical, Oberdorf, Switzerland) in 107 patients undergoing reconstruction for bridging mandibular defects following ablative tumor surgery.

Patients And Methods: From January 1993 to December 2000, 107 patients were reconstructed following ablative tumor surgery with 57 THORP plates and 50 UniLOCK plates. Study follow-up ranged from 18 to 87 months (average, 32 months).

Marginal flap versus paramarginal flap in impacted third molar surgery: a prospective study.

Objective: A clinical prospective study was carried out to compare 2 flap designs-marginal and paramarginal-that are used during impacted third molar surgery.

Materials And Methods: Twenty-seven healthy patients (ages 17 to 31 years) who underwent surgical removal of 4 impacted third molars, including 54 lower and 54 upper, were included. A marginal flap was used in 1 randomly chosen half of the jaw, and a paramarginal flap was used in the other half.