Multiloop edgewise archwire in the treatment of a patient with an anterior open bite and a long face.

An adolescent girl with an Angle Class III malocclusion, excessive lower facial height, and anterior open bite sought nonsurgical treatment. She was treated with a multiloop edgewise archwire (MEAW). In association with a chincup, MEAW mechanics allowed the successful correction of the anterior open bite and the molar relationship, without major alterations of the patient's profile.

Influence of natural bovine enamel roughness on bond strength after etching.

Objective: To determine and compare the longitudinal and transverse roughness parameters of the enamel surface of bovine teeth and evaluate the influence of these parameters on bond strength.

Materials And Methods: Ninety bovine incisors were used. The surface roughness of enamel was measured with a profilometer.