Since the end of the 1970s, various appliances with intramaxillary anchorage for distalization of the upper molars have been described as an alternative to headgear. The major advantages of these innovative appliances are that they act permanently and are independent of patient compliance. The purpose of this study was to compare the efficiency, both quantitatively and qualitatively, of various...

The behaviour of squat shape partially grouted concrete masonry shear walls with fixed-end boundary conditions subjected to constant average axial stress and cyclic lateral loading was investigated. Two replicas were tested each combination horizontal reinforcement ratio (0.12%, 0.06%, 0.03%) four end anchorage (straight, 90°, 180°, studs). the compared in terms strength, ductility, stiffness, ...

INTRODUCTION The purpose of this study was to compare the clinical effectiveness of the midpalatal implant as a method of reinforcing anchorage during orthodontic treatment with that of conventional extraoral anchorage. This was a prospective, randomized, clinical trial at Chesterfield and North Derbyshire Royal Hospital NHS Trust and the Charles Clifford Dental Hospital, Sheffield, in the Unit...

The purpose of this study was to determine whether nickel-transformed Chinese hamster cells exhibit nonrandom chromosomal alterations involving heterochromatic regions, particularly the heterochromatic long arm (q) of the X-chromosome, since nickel was previously shown to induce acute chromosomal damage predominantly in heterochromatin. Early passage male or female Chinese hamster embryo cells ...

Palatal implants have been used over the last two decades to eliminate headgear wear and to establish stationary anchorage. In this case report, the stability of a palatal implant for distalization of molars bodily and for anchorage maintenance was assessed. The implant was a stepped screw titanium (4.5 mm diameter x 8 mm length), and it was placed in the palatal region for orthodontic purposes...

Transfection of activated promotion sensitivity genes(pro genes)con fers on insensitive (P) cells susceptibifity to induction of anchorage Independent growth by tamer-promoting phorbol esters. Promotion-sen sitive (P) JB6 cell variants, from which activated pm-i and pro-2 were cloned, res@ to 12.O-tetradecanoylpborbol-13-acetate (1PA)and var Ions noophorbol tumor promoters with anchorage-Indepe...

The aim of this study was to compare the effects of the Gjessing (PG) retraction spring used with and without the zygoma anchorage system (ZAS) on canine retraction. Thirty patients, with an Angle Class I or Class II malocclusion, whose upper first premolars were scheduled for extraction, were divided into two equal groups. Group 1 comprised maximum anchorage cases (nine females and six males w...

To determine whether methicillin-resistant Staphylococcus aureus (MRSA) USA300 commonly caused infections among Alaska Natives, we examined clinical MRSA isolates from the Alaska Native Medical Center, Anchorage, during 2000–2006. Among Anchorage-region residents, USA300 was a minor constituent among MRSA isolates in 2000–2003 (11/68, 16%); by 2006, USA300 was the exclusive genotype identifi ed...

BACKGROUND AND AIMS The Finite Element Method (FEM) has been used in recent years to simulate overturning processes in trees. This study aimed at using FEM to determine the role of individual roots in tree anchorage with regard to different rooting patterns, and to estimate stress distribution in the soil and roots during overturning. METHODS The FEM was used to carry out 2-D simulations of t...