Age-Dependent Three-Dimensional Evaluation of Circummaxillary Sutures Maturation in Normal Population Using Cone-Beam Computed Tomography: Early Childhood Through Adolescence.

Introduction: Initiation time of dentofacial orthopedics is as important as the choice of treatment protocol. Morphology and degree of fusion of circummaxillary sutures differ in various populations; hence, the aim of this study was to evaluate the exact age of ossification of the most important maxillary suture using cone-beam computed tomography to find the appropriate age to start orthopedic treatment.

Methods And Materials: This cross-sectional retrospective study was performed on 517 cone-beam computed tomography images of patients aged 6 to 18 years old.

3-DOF Force-Sensing Motorized Micro-Forceps for Robot-Assisted Vitreoretinal Surgery.

In vitreoretinal surgery, membrane peeling is a prototypical task where a layer of fibrous tissue is delaminated off the retina with a micro-forceps by applying very fine forces that are mostly imperceptible to the surgeon. Previously we developed sensitized ophthalmic surgery tools based on fiber Bragg grating (FBG) strain sensors, which were shown to precisely detect forces at the instrument's tip in two degrees of freedom perpendicular to the tool axis. This paper presents a new design that employs an additional sensor to capture also the tensile force along the tool axis.

Theoretical simulation of temperature elevations in a joint wear simulator during rotations.

The objective of this study is to develop a theoretical model to simulate temperature fields in a joint simulator for various bearing conditions using finite element analyses. The frictional heat generation rate at the interface between a moving pin and a stationary base is modeled as a boundary heat source. Both the heat source and the pin are rotating on the base.