Guided bone regeneration using beta-tricalcium phosphate with and without fibronectin-An experimental study in rats.

Objective: This histomorphometric study compared bone regeneration potential of beta-tricalcium phosphate with fibronectin (β-TCP-Fn) in critical-sized calvarial defects (CSDs) in rats to assess whether fibronectin (Fn) improved new bone formation.

Material And Methods: Critical-sized calvarial defects were created in 30 adult male Sprague Dawley rats, which were divided into four groups according to the time of euthanasia (6 or 8 weeks of healing) and type of filling (β-TCP-Fn/6 weeks, β-TCP/6 weeks, β-TCP-Fn/8 weeks and β-TCP/8 weeks). The primary variables related to new bone formation were augmented area (AA) and gained tissue (GT; sum of mineralized bone matrix [MBM] and bone substitute [BS]).

Bone Regeneration Using Adipose-Derived Stem Cells with Fibronectin in Dehiscence-Type Defects Associated with Dental Implants: An Experimental Study in a Dog Model.

Purpose: To determine the bone regeneration potential of a ceramic biomaterial coated with fibronectin and adipose-derived stem cells covered in three-wall critical-size defects associated with dental implants.

Materials And Methods: In a total of 18 dogs, four dehiscence-type and critical-size defects were created surgically in the edentulous alveolar ridge with the simultaneous placement of dental implants. Defects were randomly regenerated using biomaterials coated with particulate ß-tricalcium phosphate (β-TCP), β-TCP with fibronectin (Fn) (β-TCP-Fn), and β-TCP with a combination of Fn and autologous adipose-derived stem cells (ADSCs) (β-TCP-Fn-ADSCs), leaving one defect as the control.

Wearability and physiological effects of custom-fitted vs self-adapted mouthguards.

Objectives: The purpose of this study was to measure the comfort, wearability, physiological effects and its influence on athletes' physical performance, of custom-fitted compared with self-adapted mouthguards (MGs).

Methods: Eleven rugby players were put under specific efforts similar to those of the competition. Each player made three consecutive tests randomly wearing a commercially available 'boil-and-bite' self-adapted mouthguard (MG2), a custom-fitted mouthguard (MG3), and no mouthguard (reference).