Volume 19, Issue 1, Winter and Spring 2019, Page 1-100

Efficacy of Local Haemostatic Agent Following Minor Surgery (An Experimental and Clinical Study)

Alyaa Naser; Huda Salim; Rayan hamed

Al-Rafidain Dental Journal, Volume 19, Issue 1, Pages 1-10
DOI: 10.33899/rden.2019.126152.1005

Aims : This study aims to estimate the efficacy of Ostene as bone hemostatic agent clinically and experimentally and their effect on the ease of operation in clinical dental practice. Materials and Methods: For experimental part: Fifteen males rabbits were divided into three groups according to the time interval for hemostasis measurement, five rabbits in each group. Each group subdivides into other three groups according to study material "ostene, gelfoam, control". On femoral bone, three holes were made. After bleeding started, study material was placed inside holes, then a uniform piece of cotton was applied with gentle pressure, then hemostasis measured using the gravimetric method. For the clinical part: after complete extraction, a piece of study material was implanted inside the tooth socket and covered with uniform cotton for hemostasis, then hemostasis measured using the gravimetric method. Results and Discussion: For experimental part: study result revealed that the comparison between two local hemostatic agents (ostene and gelfoam) groups for hemostatic effect show Ostene has superiority effect over gelfoam in control bleeding at all interval times. Friedman test revealed a significant difference between study materials P =0.00 (P ≤ 0.05). For the clinical part: clinical measurement, ostene showed significant over gelfoam at 1min, 30 min While there were no significances between ostene and gelfoam at 5min,10min. Regarding visual analog scales for assessing bleeding and ease of operation, ostene, when comparing it with gelfoam, appeared better than gelfoam. Conclusion: Hemostatic effect of ostene is superior to gelfoam experimentally and after tooth extraction.

Evaluation of Apical Microleakage of Endodontically Treated Teeth Sealed With Three Different Root Canal Sealers

Omar Rahawi; Manaf Ahmad; Sabah Ismail

Al-Rafidain Dental Journal, Volume 19, Issue 1, Pages 11-19
DOI: 10.33899/rden.2019.126101.1004

Aims: Different materials can be used during endodontic treatment of teeth as a root canal sealer. Thus, this study was done to evaluate the sealing ability of three different types of root canal sealer in the apical part of canals. Materials and Methods: 50 sound human teeth can instrumented by using a rotary ProTaper nickel-titanium files under crown down technique. The samples was divided randomly into 3 groups (n=10), Additionally two groups were used for controls, first group use Endofill sealer ( PD product dentaires SA,Switzerland), and group two used Tagadseal sealer (technical general United kingdom), third group used AH plus sealer (Dentsply, Switzerland). All teeth were obturated using single cone technique with sealers, then the whole root surface layered with two layer of special type of nail varnish except apical 1 mm, then all teeth were placed into 2 % methylene blue dye liquid for one week at 37o C. After that removed from dye liquid, the nail varnish was removed. The positive controls (n=10) were left unfilled and coated as described earlier. Then the teeth was split longitudinally and each half examined under a stereomicroscope with magnification: 10 X. Then using computer software on the photo taken by a digital camera. Analyzing of data was done by One-Way Anova and Duncan,s Test analysis among the means of microleakage of the three types of sealers. All tests were computed at 5% significance level. Results: show statistically significant difference among groups.

Water sorption and solubility of two acrylic resin denture base materials polymerized by Infrared radiation

Aliaa Alomari; Nagham Kassab; Nada Mohammed

Al-Rafidain Dental Journal, Volume 19, Issue 1, Pages 20-31
DOI: 10.33899/rden.2019.126003.1003

Aims: To determine the effect of different curing times of a new method of polymerization by infrared radiation on the absorption and solubility in water of acrylic resin materials for denture base. Materials and Methods: In this study two types of denture base materials cured by heat were used (Traditional or Conventional and High Impact), the entire number of prepared specimens were (80) which grouped into: A- Control group: Consisted of two types of acrylic resin specimens polymerized by conventional water bath .B- Experimental group: Consisted of two types acrylic resin specimens polymerized by infrared radiation (IR) at different times of curing cycles. In each group; specimens were divided equally, some related to water sorption test others for solubility test. The mean of mass change of the material after they saturated with water and dried out of it was used, then analysis of data was done using one-way analysis of variance and Duncan test. Results: Statistically, no significant differences existed between Traditional and High Impact acrylic resin cured by water bath in water sorption and solubility tests. The means values for previously mentioned tests in two types of acrylic resin had been decreased significantly by changing type of curing from conventional water bath to (IR) method. Conclusions: The selection of appropriate time and type of curing method may optimize the level of absorption and solubility in water for previously mentioned materials.

Evaluation of the Effect of Physically Magnetized Water on Some Properties of Dental Stone

Ahmed Al-Khyeat

Al-Rafidain Dental Journal, Volume 19, Issue 1, Pages 32-41
DOI: 10.33899/rden.2019.163420

Aims: to study the effect of interaction of dental stone with tap water and physically magnetized water on two periods of time 24h. and 12h to study the change in the physical properties of final product. Materials and Methods: We started prepair no. of control samples and other of samples interacted with physically magnetized water for two periods of time 24h and 12h, then we studied the liner setting expansion and compressive strength.. Results: results obtained from comparing control sample with that treated with physically magnetized water showed an increase in the compressive strength of physically magnetized group and decrease of linear setting expansion in comparison with that of control sample. Conclusion: Reaction of dental stone with physically magnetized water lead to change in some physical properties of dental stone.

The Topical Effect of Coenzyme Q10 on Wound Healing in Mice

Ibtisam Al-Jureisy; Wael Al-Wattar; Ghada Taqa

Al-Rafidain Dental Journal, Volume 19, Issue 1, Pages 42-51
DOI: 10.33899/rden.2018.163600

Aims: the current paper examines the topical effect of Coenzyme Q10 ointment in mice. Materials and Methods: Fifteen well male albino mice with equivalent age were designated for this research. The animals were divided into 3 clusters of five animals for each group. Group one worked as a control and was applied Vaseline ointment topically on skin wound. Groups; two and three were applied topically Coenzyme Q10 ointment 4%, 8% respectively on skin wound. These applications were repeated every day. The wound size and wound contraction ratios were measured in 1st, 4th, 7th days of the experimental procedure. Result: There were significant differences between groups in wound size and wound contraction ratios. The groups were treated with Coenzyme Q10 in different concentrations. They are better in rating the wound healing. Conclusion: The topical application of CoQ10 in different concentrations encourages the wound curing in the soft tissue of mice.