evaluation of microleakage under orthodontic brackets bonded with different adhesive systems.

Objective: Adhesives systems have a drawback when utilized for bonding orthodontic brackets: they shrink during photopolymerization creating microleakage. The aim of this study was to assess the stability of different orthodontic adhesives around brackets and enamel.

Materials And Methods: Sixty noncarious mandibular premolars extracted for orthodontic reasons were randomly divided into six groups of adhesives used for bonding brackets to dental enamel: NeoBond Light Cure Adhesive Kit, Transbond™ Plus Self-Etching, Victory V-Slot APC PLUS + Transbond™ MIP, Rely-A-Bond Kit, Light Cure Orthodontic Adhesive Kit (OptiBond), and Transbond™ MIP.

Impact of dental and skeletal movements on the facial profile within the framework of orthodontic and surgical treatments.

The impact of dental and skeletal movements on the soft tissues during orthodontic and surgical treatments is widely known. Most studies are limited to examining the repercussions of a dental or skeletal movement on a given soft tissue point. The uniqueness of the present study, carried out on 95 patients, lies in the examination of the impact of movements of various landmarks--2 dental points (incision superius and incision inferius) and 4 skeletal points (anterior nasal spine, point A, point B, andpogonion)--on 7 soft tissue landmarks (from the tip of the nose to soft tissue pogonion).