Roozbeh Rashed

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INTRODUCTION Although various aspects of smile esthetics have been considered in many studies, few of them have compared laypeople's preferences for an esthetic smile with regard to the shape of the anterior teeth. The aim of this study was to evaluate the effects of the shapes of the maxillary anterior teeth in men and women on the perception of an(More)
BACKGROUND Enamel cracks, which may develop during debonding orthodontic brackets, may jeopardise the integrity of the enamel and detract from the appearance of the teeth. AIM To compare the adhesive remnant scores (ARI), the number, lengths and directions of enamel cracks before bonding and after debonding metal orthodontic brackets with three different(More)
Facial soft tissue cephalometric parameters are specific to each society. These measurements should be considered during planning treatment for orthodontic patients. We establish lateral cephalometric facial soft tissue norms in adolescent boys and girls with normal occlusion in Mashhad in the northeast of Iran, and compare them with those of other(More)
Success in endodontic treatment depends on various factors. One of the most important is appropriate preparation of the root canal system, in addition to keeping the periapical region intact as much as possible. This is achieved by determining the penetration depth of the instruments into the canal or the "working" length. Several methods are introduced for(More)
Anthropometry, a useful method for evaluating craniofacial soft tissues, makes the quantitative description of the face possible. It also assesses the degree of disharmony and imbalance in the growth and development of the face. The aim of this study was to examine the overall common age-related changes of nasomaxillary complex of adolescent boys in(More)
BACKGROUND Few studies have focused on the impact of malocclusion on lip - tooth relationships during smiling and speech. AIM To evaluate the impact of different malocclusions on lip - tooth relationships during smiling and speech, using video images. METHODS One hundred and three subjects with Class I (N = 31), Class II division 1 (N = 26), Class II(More)
BACKGROUND Marking pencils which are frequently used in orthodontics may cause microbial contamination. The purpose of this study was to evaluate and compare the effectiveness of three disinfection and sterilization methods (autoclave, glutaraldehyde solution, and Deconex spray) on orthodontic markers. MATERIALS AND METHODS One hundred and twenty(More)
OBJECTIVES The objective of this study was to assess the effect of new bonding techniques on enamel surface. MATERIALS AND METHODS Sixty upper central incisors were randomly divided into two equal groups. In the first group, metal brackets were bonded using TransbondXT and, in the second group, the same brackets were bonded with Maxcem Elite. The shear(More)
BACKGROUND Elastomeric chains are commonly used in orthodontics. Force decay in these materials poses clinical problems. The aim of this study was to evaluate the effects of three different mouthwashes on the force decay of orthodontic chains. MATERIALS AND METHODS In this experimental study, elastomeric chains with two different configurations were(More)
PURPOSE The use of cell-based therapies represents one of the most advanced methods for enhancing the regenerative response in craniofacial abnormalities. The main aim of this study was to evaluate the regenerative potential of human dental pulp stem cells, isolated from deciduous teeth, for reconstructing maxillary alveolar defects in Wistar rats. (More)