Comparison of intracanal medications for the assessment of pain after root canal treatment

The aim of this study was to compare the analgesic effects of Calcium hydroxide and Chlorhexidine as intracanal medicaments in three different groups of patients. This interventional study was conducted over a period of one year at the Department of Operative Dentistry, Fatima Jinnah Dental Hospital, Karachi. 465 single rooted teeth of patients were divided into three equal groups with 155 teeth in each group.155 canals were filled with Calcium Hydroxide, 155 canals with Chlorhexidine and another 155 canals with cotton pellets. The effectiveness of one intracanal medication versus another was checked in controlling post operative pain after endodontic treatment. The results showed that there was a significant difference between post operative pains in the three different groups. Group B [chlorhexidine] proved to be most effective against pain [22.58%] followed by group A [calcium hydroxide] [9.68%] and group C [cotton pellets] [1.29%] respectively. The McNemar Chi-Square test showed significant result with p-value<0.00. This study showed that Chlorhexidine has better analgesic effects as an intracanal medicament than Calcium hydroxide or no medication

Effect of denture cleansers on the color stability of heat cure acrylic resin

To compare the color stability of heat cure acrylic resin after immersion in distilled water and denture cleansers. In-vitro experimental study. Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences and Al-Karam Textiles, Karachi, from January to April 2012. Seventy two rectangular shaped specimens; 18 specimens were measured at baseline [control group] of the study [0 day], 18 specimens were immersed in distilled water. Eighteen [18] in Fittydent denture cleanser tablets for 10 minutes and eighteen [18] in Dentipur denture cleanser tablets for 10 minutes. Specimens were polished and stored in istilled water for 24 hours prior to experiment. After 60 days of immersion, the specimens were tested for color changes with spectrophotometer. SPSS 16 was used for statistical analysis. There was statistically significant difference in the color change [delta E] among all groups [p < 0.001] after 60 days of immersion. At baseline [0 day], trace amount of color change was observed whereas when specimens were immersed in Fittydent denture cleansers tablets for 60 days noticeable change in color was observed. Very slight change in color was bserved when specimens were immersed in distilled water and dentipur denture cleanser solution. The color stability of denture base acrylic resin was influenced by the type of denture cleansers used

Role of periodontal therapy in type II diabetes mellitus

The purpose of this study was to observe a gender based effect of periodontal therapy on glycaemic control of type II diabetes mellitus. This Interventional study was conducted on one hundred four patients suffering from type II diabetes mellitus, both gender were included from twenty five to sixty five years of age. Periodontal parameters were calculated using the community periodontal index need, bleeding on probing, tooth mobility and furcation involvement. The glycaemic status was evaluated by determining glycosylated haemoglobin [HbA1c] levels at base line before non-surgical periodontal therapy and three months after receiving the treatment. All the examination and data collection were carried out by a single examiner. The data were analysed using the SPSS version 15.It was conducted that the periodontal parameters along with the reduction in the results of glycaemic parameters significantly improved [p 0.005] and more pronounced in female patients than male patients.It was concluded that the severity of the periodontal disease is the most important risk factor related to poor glycaemic control

Sacrificial protection method during disinfection to avoid corrosion

Alloys are used in every aspect of dentistry. Corrosion of an alloy is a major issue during disinfection and method adopted for anti-corrosion treatment is very costly. The purpose of this paper was to demonstrate the sacrificial protection [SP] technique and preventing the corrosion of dental metals. The method used in the present was Sacrificial protection [SP] technique to control the corrosion of a metal surface by attachment of a metal [i.e., aluminum,] with a higher ionization potential to the original metal which acts as the anode of an electrochemical cell. The study was conducted at Dr Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences in September-November 2013. The results of the present were that there is no corrosion found on the surface of the metal while immersing them into electrolyzed water for 7 days. It was concluded that during immersion into functional waters for disinfection, dental metals often undergo tarnishing and corrosion due to which their properties will be compromised. Therefore, to prevent the corrosion of dental metals, the present study revealed an effective and simple method. Sacrificial protection is very simple and cost effective method to prevent the dental material from corrosion

Effect of staining solutions on the colour stability of direct resin composite

Resin-based composite dentures or teeth are used as replacement of missing teeth. Their success depends largely on their colour stability as they undergo discoloration after prolonged exposure in oral environment and therefore, need replacement for esthetic reasons. To evaluate the colour stability of a nanofill composite resin [Filtek Z350] when exposed to different immersion media. Study design and settings: An in-vitro experimental study was carried out at Dr. Ishrat-ul-ebad Khan Institute of Oral Health Sciences and colour testing was done at Al Karam textiles limited. Forty resin-based composite specimens measuring 1 mm. of thickness and 5x5 mm. in length and breadth were prepared using a plastic sheet. Specimens were light-cured for 20 seconds from both sides and were randomized into 4 groups [n=10] according to immersion solutions: distilled water [control], coke, turmeric powder solution and coffee solution. Specimens were left immersed in these solutions for 10 days A digital spectrophotometer was used to evaluate the colour changes after 10-days and the colour differences [deltaE] were analyzed using paired t-test [p < 0.05]. After 10 days of immersion in coffee solution, coke and turmeric powder solution specimens showed significant colour change. The turmeric powder exhibited maximum staining followed by coffee and coke. The composite resin was susceptible to staining by coffee, turmeric powder and coke