Three-dimensional long-term assessment of soft tissue stability after orthognathic mandibular advancement for class II malocclusion correction.

Objectives: This study aims to assess the stability of soft tissues one and three years after orthognathic mandibular advancement surgery by superimposing the cone-beam computed tomography (CBCT) images and quantifying potential soft tissue changes following surgery.

Materials And Methods: In this prospective observational study, changes in the hard and soft tissues of the chin, lower incisors, and lower lip due to displacement and/or bone remodeling were analyzed using three-dimensional models based on CBCT superimposition images acquired before surgery (T0), one year after surgery (T1), and three years after surgery (T3). The cranial base was used as a reference for the superimpositions, which were based on fully automated grayscale voxel-wise registrations.

Articaine versus lidocaine for third molar surgery: a randomized clinical study.

Objective: Pain reduction has been the subject of continuous research in the field of oral and maxillofacial surgery since postoperative pain with ranging of intensity and duration may affects the patient submitted in an oral surgical procedure. The aim of present study was to compare the analgesic effectiveness between two different anesthetic solutions (articaine and lidocaine) in third molar surgery.

Study Design: A prospective, randomized and clinical study with patients submitted to third molar surgery at two distinct times.