Stress and displacement of mini-implants and appliance in Mini-implant Assisted Rapid Palatal Expansion: analysis by finite element method.

Objective: In this study, simulations were performed by the finite element method (FEM) to determine the tension and displacement in mini-implants and in expander appliance during rapid maxillary expansion, by varying the number and location of the mini-implants.

Methods: For the computational simulation, a three-dimensional mesh was used for the maxilla, mini-implants and expander appliance. Comparisons were made on six different Mini-implant Assisted Rapid Palatal Expander (MARPE) configurations, by varying the amount and location of mini-implants.

Chlorhexidine gel associated with papain in pulp tissue dissolution.

Objectives: This study aimed to evaluate the capacity of 2% chlorhexidine gel associated with 8% papain gel in comparison with 5.25% sodium hypochlorite in bovine pulp tissue dissolution.

Materials And Methods: Ninety bovine pulps of standardized sizes were used and fragmented into 5-mm sizes.

Cross sectional: perception of children from public and private schools regarding the esthetic impact of different types of face masks.

Purpose: The purpose was to evaluate the esthetic perception among children from public and private schools regarding the use of different types of face masks.

Methods: Six different types of orthopedic face masks made from images of the same patient were evaluated. Initially, the images were standardized with the help of Adobe Photoshop software.