Rao B.,Saveetha Dental College |
Reddy S.N.,Lenora Dental College |
Mujeeb A.,Bapuji Dental College and Hospital |
Mehta K.,Dr DY Patil Dental College |
Saritha G.,Pullareddy Dental College
Journal of Contemporary Dental Practice | Year: 2013
Aim: To determine the shear bond strength of self-etch adhesive G-bond on pre-etched enamel. Materials and methods: Thirty caries free human mandibular premolars extracted for orthodontic purpose were used for the study. Occlusal surfaces of all the teeth were flattened with diamond bur and a silicon carbide paper was used for surface smoothening. The thirty samples were randomly grouped into three groups. Three different etch systems were used for the composite build up: group 1 (G-bond self-etch adhesive system), group 2 (G-bond) and group 3 (Adper single bond). Light cured was applied for 10 seconds with a LED unit for composite buildup on the occlusal surface of each tooth with 8 millimeters (mm) in diameter and 3 mm in thickness. The specimens in each group were tested in shear mode using a knife-edge testing apparatus in a universal testing machine across head speed of 1 mm/ minute. Shear bond strength values in Mpa were calculated from the peak load at failure divided by the specimen surface area. The mean shear bond strength of all the groups were calculated and statistical analysis was carried out using one-way Analysis of Variance (ANOVA). Results: The mean bond strength of group 1 is 15.5 Mpa, group 2 is 19.5 Mpa and group 3 is 20.1 Mpa. Statistical analysis was carried out between the groups using one-way ANOVA. Group 1 showed statistically significant lower bond strength when compared to groups 2 and 3. No statistical significant difference between groups 2 and 3 (p < 0.05). Conclusion: Self-etch adhesive G-bond showed increase in shear bond strength on pre-etched enamel.
Nimonkar P.V.,Dental College and Research Center |
Waknis P.P.,Dental College and Research Center |
Waknis P.P.,Deenanth Mangeshkar Hospital |
Waknis P.P.,Dr Dy Patil Dental College
Asian Journal of Oral and Maxillofacial Surgery | Year: 2011
Pulmonary oedema following general anaesthesia or extubation is an uncommon and unpredictable clinical entity. This unusual disease is actually attributed to pulmonary and haemodynamic changes engendered by high negative intra-thoracic pressures during the state of obstructed respiration. We report a case of postoperative pulmonary oedema in a previously healthy 35-year-old female with post-extubation laryngospasm. The patient responded rapidly to conservative management including removal of secretions, re-intubation, oxygen therapy with positive pressure ventilation and administration of diuretics with short term antibiotics. This report emphasizes the importance of rapid identification and proper management of this serious condition. © 2010 Asian Association of Oral and Maxillofacial Surgeons.
Gidwani K.V.,Dr Dy Patil Dental College
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2015
Human saliva plays a vital role in maintaining the integrity of oral tissues and its composition changes during childhood due to maturation of the salivary glands thus indicating the need of age-matched controls for the clinical use of saliva as a diagnostic tool for diseases. Thus this study aims at analyzing physiologic variability of naturally occurring electrolytes in unstimulated whole saliva of children as a function of age. For this study unstimulated whole saliva specimens were collected from 20 healthy children equally divided into: Deciduous dentition (3-5 years) 5 males and 5 females and Mixed dentition (6-11) 5 males and 5 females. The samples were studied for estimation of electrolytes by inductively coupled plasma emission spectrometer. The electrolytes detected in this study were sodium, potassium, calcium and chlorine showing linear increase with age from deciduous to mixed dentition with potassium concentration highest in the mixed dentition group. Thus this study establishes a correlation between age and salivary composition. Hence constructing a comprehensive catalogue which is physiologic for salivary electrolytes with newer biochemical aids is necessary for saliva to serve as a diagnostic aid.
PubMed | Dr Dy Patil Dental College
Type: Journal Article | Journal: Indian journal of dental research : official publication of Indian Society for Dental Research | Year: 2015
Various agents are studied for their remineralization potential.To evaluate the effect of GC Tooth Mousse and Toothmin Tooth Cream on microhardness of bleached enamel.In vitro- study.Twenty freshly extracted anterior teeth were cut sagittally and impregnated in cold cure acrylic resin. Specimens were kept in artificial saliva to prevent from dehydration. After measuring baseline hardness, teeth were randomly divided into two groups. Everbrite In - Office Tooth whitening kit (Dentamerica) was used to demineralize the teeth following which hardness was measured again. Teeth in group one (n=10) and group two (n=10) were treated with GC tooth mousse (Recaldent) and Toothmin tooth cream (Abbott Healthcare Pvt.Ltd) daily for seven days and microhardness of enamel surface was measured.Mean, SD, and percentage change in the microhardness were calculated. Students paired t-test was used to evaluate the signifi cance of change from initial, after bleaching for 5 min and after 1-week remineralization Unpairedt test was used to compare difference between groups.Microhardness significantly decreased in both groups after bleaching (% change group one: 3.24% group two: 3.26% in group; P<0.01 in both groups). Both products significantly increased mineralization after seven days of treatment (P<0.01). Remineralization was numerically better in Toothmin group (Abbott Healthcare Pvt.Ltd ) compared to GC Mousse(Recaldent) (% change 3.27% vs 6.34%). However, difference was not significant (P >0.05).Both GC Tooth Mousse (Recaldent) and Toothmin Tooth cream (Abbott Healthcare Pvt.Ltd) increase the microhardness of bleached enamel. Toothmin tooth cream is a better agent for increasing microhardness, although difference is not significant.