Effects of a calcium phosphate coating on the osseointegration of endosseous implants in a rabbit model.

Objectives: The aim of the present study was to evaluate a Ca-P coated implant surface in a rabbit model. The Ca-P surface (test) was compared to the titanium porous oxide surface (control) in terms of bone-to-implant contact (BIC) and removal torque value.

Materials And Methods: Two hundred and sixteen dental implants were inserted in the tibia and in the femur of 36 rabbits.

Orthodontic treatment of periodontally involved teeth after tissue regeneration.

In this consecutive series, 14 patients with severe intrabony defects and pathologic tooth migration were treated with guided tissue regeneration (GTR) and subsequent orthodontic therapy in an attempt to evaluate the validity of this multidisciplinary approach. Probing pocket depths (PPD), clinical attachment levels (CAL), and gingival recessions were assessed at baseline, 1 year after GTR, and at the end of orthodontic therapy. Radiographs were obtained at all time points.

Fatigue in the masseter and temporalis muscles at constant load.

Fatigue is usually defined as the point at which a particular level of force can be no longer maintained. In the present study, surface EMG of the masseter and temporalis anterior muscles was measured in ten healthy young adults performing a unilateral molar (right side) clench. The subjects clenched on a bite force transducer at a fixed force level of 13 kg (127 N) as long as they could (endurance).

Soft tissue facial areas and volumes in subjects with Down syndrome.

The objective of this study was to supply quantitative information about the facial soft-tissues of a group of subjects with Down syndrome. The three-dimensional coordinates of 28 soft-tissue facial landmarks were obtained by an electromechanic digitizer in 17 male and 11 female subjects with Down syndrome aged 12-45 years, and in 429 healthy individuals of the same age, ethnicity, and sex. From the landmarks, facial areas (eyes, ears, nose, and lips) and volumes (nose and lips) were calculated according to a geometrical model of face.

Maximal bite forces in healthy young adults as predicted by surface electromyography.

Objectives: To assess the repeatability of maximal bite force estimates as obtained by submaximal electromyographic-force relationships performed simultaneously and symmetrically in both sides of the mouth. The protocol could be used in a clinical context to obtain indicative values for the occlusal loads to be resisted by the prosthetic reconstructions.

Methods: Ten young healthy subjects performed; (1) a maximum voluntary clench (MVC) directly on their occlusal surfaces; (2) four simultaneous recording of submaximal bite forces (98, 196, 304 and 392 N on two transducers positioned on the left and right first mandibular molars) and surface EMG potentials of the masseter and temporalis anterior muscles.

Soft tissue facial anthropometry in Down syndrome subjects.

The three-dimensional coordinates of 50 selected soft tissue facial landmarks were digitized on 28 white Italian subjects with Down syndrome (17 male and 11 female subjects aged 12 to 45 years) and 429 healthy controls of comparable ages by an electromechanical instrument. From the landmarks, 16 facial dimensions were calculated. Data were compared with those collected in healthy individuals by computing z-scores.