ABSTRACT
揋uitar pick sign,� also referred to as posterior globe tenting, is a radiological surrogate marker of tense orbit and profound vision loss. It is seen commonly in traumatic retrobulbar hemorrhage and carotico-cavernous fistula and less frequently in orbital cellulitis, subperiosteal abscess, and invasive fungal infections. We report a case series of Coronavirus disease-19朼ssociated rhino-orbito-cerebral mucormycosis with guitar pick sign, of which none survived, and discuss the causative pathomechanisms, severity grade, and the clinical relevance of this unique radiological finding.
ABSTRACT
Background: Orthodontic pain usually appears hours after the force is applied. Methods employed for pain relief include nonsteroidal anti-inflammatory drugs, vibratory stimulation, chewing gum, anaesthetic gel, bite wafers, transcutaneous electrical nerve stimulation, and low level laser therapy. Aims and Objectives: To evaluate the effect of a single dose of low level laser therapy on pain associated with elastomeric separators. Methods: The sample comprised 30 patients. Elastomeric separators were placed mesial and distal to the permanent first molars in all quadrants. Both arches were divided into experimental and control sides. The experimental sides were treated with low-level laser therapy. The other side received placebo laser therapy without turning on the laser. A numeric rating scale was used to assess the intensity of spontaneous pain, pain after chewing, brushing, drinking water and warm drinks for five days. Results: There was a significant difference (P<0.05) between the laser and the placebo groups on spontaneous pain perceived by the patients for all 5 days. Conclusion: A single application of laser with a gallium aluminium- arsenic diode laser with a 980-nm wavelength can reduce orthodontic pain associated with the placement of separators
ABSTRACT
Aim: The aim of the study was to determine the extent of genetic influence and environmental contribution to dentofacial growth and development. Materials and methods: 15 pairs twins were selected and divided into monozygotic (8) and dizygotic(7) with the help of DNA finger printing analysis. Study models of the twins were taken. The parameters like overjet, overbite, U/L inter premolar width, U/L inter molar width, U/L arch length and palate depth were recorded on study cast. Results: Statistical analysis reveals that significant hereditary component for the parameters-overjet, overbite, U/L Inter premolar width, U/L Inter molar width and palate depth. No significant heritability was observed for U/L arch length. Conclusion: A significant heritability values were obtained for seven out of nine parameters studied. overjet, overbite, both upper and lower inter premolar width and inter molar width, palate depth were showing a significant genetic variability where as upper and lower arch length showed insignificant genetic influence, indicating environmental influences substantially.
ABSTRACT
Growing skeletal class II malocclusions with mandibular deficiency have been treated for more than a century with different types of functional appliances. Removable or fixed functional appliances are available to advance the mandible. Fixed functional appliances have the advantage of not requiring patient compliance. They can also be used concurrently with brackets. This case report documents the successful treatment of mild skeletal class II in late stages of puberty by using Forsus fatigue resistance appliance. The Forsus appliance is a three-piece, semi-rigid telescoping system incorporating a super-elastic nickel -titanium coil spring that can effectively brings the mandible forward in a relatively shorter treatment time. It is compatible with complete fixed orthodontic appliances and can be incorporated into preexisting appliances.
ABSTRACT
An invitro study was conducted to determine a simple and effective method for reconditioning stainless steel orthodontic brackets in the orthodontic office. In total, 120 new brackets were direct bonded using light cure composite to extracted human premolar teeth, then debonded and the shear bond strength recorded as a control for the reconditioning process. The debonded brackets were divided into four groups containing 30 brackets each and each group reconditioned using different techniques as follows: (1) roughened with green stone, (2) direct flamed, (3) flamed followed by ultrasonically cleaned, (4) sandblasted. After reconditioning, the brackets were then rebonded to the premolar teeth after the enamel surfaces had been re-prepared, and their bond strengths measured. The results showed that bracket reconditioned by sandblasting had the highest mean shear bond strength among the reconditioning methods tested, indicated that sandblasting was the most effective in removing composite. Brackets that had only been roughened with green stone and direct flamed had the lowest bond strength, followed by that had been flamed followed by ultrasonic cleaning.