ABSTRACT
The aim of this study was to compare the accuracy of working length measured by electronic apex locator andperiapical radiograph. This cross sectional analytical study was conducted at Department of Operative Dentistry, Dental section, Dow International Medical College, DUHS from November 2014 till December 2014. Thirteen teeth with twenty three canals were selected in patients having age between 18 to 60 years, who were advised extraction of teeth due to any reason. Access opening was performed and working lengths of all canals were measured using Kfile with apex locator and periapical radiographs. Access opening was filled with restorative GIC with the files present in canals. Teeth were then subjected to extraction. All extracted teeth were evaluated by sectioning the lower half or lower one third of the apices longitudinally. The distance of the file tip from the minor constriction was measured and recorded. Data were analyzed by using SPSS version 16. Intraclass co-efficient test was applied to see the agreement between the lengths measured with radiograph and apex locator than compared to the actual lengths as noted after sectioning. P-value of <0.05 was considered as significant. The results of the study showed that accuracy of apex locator were 65% [n=15] with the file tip at minor constriction, while 22% [n=5] for periapical radiograph. Thus it is concluded that electronic apex locator is more accurate and reliable then periapical radiograph
ABSTRACT
Dental anxiety is a fear of visiting a dental health care provider for preventive or therapeutic care that leads to deterioration in oral health. The aim of this study was to measure the dental anxiety levels of patients presenting to the Operative dentistry department of Dental Section Dow International Medical College. It was a cross sectional study conducted between December 2014 and February 2015. Norman Corah's dental anxiety scale was used to measure the anxiety levels of patients.1 A questionnaire was developed based on this scale and a valid record of 383 forms was obtained. Amongst 383 patients, 125 were male patients [32%] while 258[67%] were female. Descriptive analysis was performed. Frequencies and cross tab calculations were carried out using SPSS version 20. Among other stressors, dental handpiece stood out as the most frightening. 12% of the respondents replied that they would get extremely anxious, making them feel physically sick while anticipating the use of a dental drill. Result showed that most of the patients [49%] had moderate dental anxiety that could be managed by simple non pharmacological means and counselling. While only 5% and 8% of the patients had high and severe [phobia] dental anxiety respectively. The mean dental anxiety level was 9.35 with Standard Deviation of +/- 3.06. More females had severe dental anxiety as compared to males [9% as compared to 5%]
ABSTRACT
The objective of the study was to compare the post instrumentation pain in teeth undergoing root canal treatment with or without occlusal tooth reduction. This randomized control trial was conducted at Outpatient Department of Operative Dentistry at Altamash Institute of Dental Medicine from September 2011 to March 2014. A total of 402 patients with irreversible pulpitis and normal periapical radiographic appearance of posterior teeth were included in this study. Patients were randomly allocated into two groups i.e occlusal tooth reduction [OTR] group and no occlusal tooth reduction [NOTR] group. After root canal instrumentation, patients were instructed to complete a Visual Analogue Scale [VAS] to score their pain at 6 hours, 12 hours, 18 hours, 24 hours, 2 days, 3 days, 4 days, 5 days, and 6 days. The final outcome that is mean post instrumentation pain score was measured at 6 days of post instrumentation. This randomized control trial was conducted at Outpatient Department of Operative Dentistry at Altamash Institute of Dental Medicine from September 2011 to March 2014. A total of 402 patients with irreversible pulpitis and normal periapical radiographic appearance of posterior teeth were included in this study. Patients were randomly allocated into two groups i.e occlusal tooth reduction [OTR] group and no occlusal tooth reduction [NOTR] group. After root canal instrumentation, patients were instructed to complete a Visual Analogue Scale [VAS] to score their pain at 6 hours, 12 hours, 18 hours, 24 hours, 2 days, 3 days, 4 days, 5 days, and 6 days. The final outcome that is mean post instrumentation pain score was measured at 6 days of post instrumentation. Mean post instrumentation pain score at 6 days was significantly low in OTR group than NOTR groups [2.44 +/- 0.86 vs. 3.24 +/- 0.89; p=0.0005]. Thus, it is concluded that occlusal reduction help in the prevention of post instrumentation pain in teeth with irreversible pulpitis, sensitivity to purcussion, pre- treatment pain and absence of periradicular radiolucency. Whereas the presence of all four conditions are the strong predictors, the presence of any one or more of the conditions is enough to indicate a need for occlusal reduction
ABSTRACT
The debonding of acrylic resin teeth with the denture base resin has been related to several different factors of which contamination of the bonding surfaces with wax has been suggested as the major cause. The purpose of this study was to determine the efficient method of wax removal from denture teeth using hot water at different temperatures ranges. Acrylic rods were used as tooth analogues and Raman spectroscopy was used to detect the presence of wax on the surfaces of the specimens. It was found that none of the techniques studied was able to remove all of the wax. Abraded ridge-lap surface showed least wax contamination when dewaxed at 100 degree C as compared to dewaxed at 85 degreeC and 65 degree C respectively. The spectrum for each specimen demonstrated peaks at different wavelengths and varying intensities, the spectra demonstrated traces of wax on abraded surfaces showed least wax when dewaxed at 100 degreeC as compared abraded surfaces dewaxed at 65 degree C and 85 degree C temperatures respectively