Archive for 'research'
Effects of the Removable and Fixed Twin block on the C- Axis, G- Axis and CG angle – A growth vector for the dento-maxillary complex and the mandible
February 2012
The growth and development of the maxilla and the mandible is being considered as an important part in orthodontics. So, normal growth of the maxilla and the mandible is considered in this study with the help of the C- axis and G- axis. Also, an angle between the C-axis and G- axis (CG angle) is introduced after setting the normal standards for 300 patients, 150 males and 150 females in 3 growth patterns.
CO2 Lazer etching: An efficient alternative to conventional acid etching technique
February 2012
Laser etching has been tried as an alternative method to acid etching. An ultra pulse and a continuous pulse CO2 laser were used to carry out enamel etching in vitro. The shear bond strength of brackets bonded to extracted premolars after etching with conventional acid etching technique, laser etching and laser etching followed by conventional acid etching technique was evaluated.
Osteoporosis – An Orthodontic Challenge
February 2012
Osteoporosis has been shown to affect periodontium and orthodontic tooth movement. There are also reports of Osteonecrosis related to oral bisphosphonate therapy during treatment for Osteoporosis. Hence an Orthodontist should be aware of the possible risks involved in osteoporotic patients undergoing Orthodontic treatment. Hence, certain recommendations are being suggested while doing Orthodontic treatment of an Osteoporotic patient.
Diagnosis of Facial Asymmetry Using Conventional PA Cephalometric Analysis and a Maxillofacial 3-Demensional CT Analysis: A Comparative Study
January 2012
The advent of computed tomography has greatly reduced magnification errors from geometric distortions that are common in conventional radiographs. Recently introduced 3-dimensional (3D) software enables 3D reconstruction and quantitative measurement of the maxillofacial complex.
Effects of Recycling on the Tensile Strength of Beta Titanium and Nickel Titanium Wires
January 2012
The ability to recycle orthodontic wires relies on effective sterilization prior to re-use without resulting in deterioration of their clinical properties and without causing health hazard to the patient. The present study was undertaken to evaluate the changes in the tensile strength of Beta titanium and Nickel Titanium wires after recycling.
Treatment Effects in an Anterior Open Bite Class II Malocclusion with Two Different Functional Appliances
January 2012
Malocclusions characterized by anterior open bite are often difficult to treat successfully. Anterior open bite is a malocclusion characterized by a deviation in the vertical relationship between the maxillary and mandibular dental arches, with absence of contact between the incisal edges of the maxillary and mandibular teeth in the vertical plane. The severity varies, from an almost edge-to-edge relationship to a severe handicapping open bite
Morphological study of temporomandibular joint in orthodontically treated patients by using pre-treatment and post treatment orthopantomographs
December 2011
The comparison of the condylar morphology was done in individuals before and after orthodontic treatment and the relationship between the orthodontic treatment and temporomandibular joint dysfunction (TMD) was assessed. There was no statistical association in the morphology of condylar among the groups. It was concluded that orthodontic treatment does not cause TMD.
An in-vitro study to assess the biohostability of Orthodontic arch wires to Hepatitis B virus
October 2011
The risk of occupationally acquiring infection is significant among orthodontic professionals because orthodontic treatment procedures involves the use of arch wires, ligature wires, band material and other sharp cutting instruments constantly in contact with saliva and blood. Any percutaneous injuries by these sharp materials can be the principal source of transfer of Hepatitis B virus. The quantum of blood required to transmit Hepatitis B virus is 0.0004ml while for HIV it is only 0.1ml Hepatitis B virus is perhaps the most common blood-borne infection in the world.
