Luh Wayan Ayu Rahaswanti
Aim: the aim of this study was to investigate the succesful rate between Zinc Oxide Eugenol and Calcium Hydroxide with Iodoform Paste as root canal sealer for necrotic primary teeth. Method: pulpectomy procedures were conducted on 16 maxilary anterior teeth and for the obturation step, they were devided into two groups consist of 8 teeth. The first group of teeth were obturated with Zinc Oxide Eugenol sealer and the second group were obturated with Calcium Hydroxide with Iodoform Paste sealer. The data was taken on one month, two months, and three months after the treatment and then analized with Fisher’s Exact Test. Result: the result shows that there is no significant succesful rate between Zinc Oxide Eugenol and Calcium Hydroxide with Iodoform Paste as root canal sealer for necrotic primary teeth. Conclusion: the conclusion of this study is that both of Zinc Oxide Eugenol and Calcium Hydroxide with Iodoform Paste have similar efficacy in treating necrotic primary teeth.
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Louise Cinthia Hutomo
Introduction: The purpose of this study is to measure the shear bond strength of rebonded mechanically retentive ceramic brackets prior which the base of the brackets was cleaned by two different methods. The first method was burnt out using spirituous lamp, the second method was burnt out using spirituous lamp and eventually sandblasted for 4 second. Methods: Thirty debonded ceramic brackets were prepared as the subject of this experiment. The shear bond strength was measured by Panke Pearson Equipment Limited, whereas the bond failure location of the rebonded brackets were examined using Zoom Stereo Microscope. T test was used to compare of the shear bond strength between two groups, whereas Chi Square analysis was used to determine the bond failure location of rebonded ceramic brackets. Results: Shear bond strength of rebonded ceramic brackets which were cleaned by second method was higher than those by first method, and had significant differences (p<0,01). Although the bond strength of rebonded ceramic brackets which were cleaned by first method was lower than the ones using second method, they were still above the clinical standard for intra oral retention. The bond failure location of rebonded ceramic brackets both by first method and second method after shear bond strength were tested, show no significant differences (p>0,05). The bond failure location of rebonded mechanically retentive ceramic brackets which cleaned by method I were mostly happen in the adhesive (86,7 %), and on the method n all the failure happens in the adhesive (100 %).
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I Gusti Agung Sri Pradnyani
Periodontal disease is an infectious disease, could be result loose of the teeth. This research is to prove that the applying 0.7% tetracycline hcl gel on rat gingival sulcus result higher number of fibroblasts and collagen synthesis which are marked by the thicker of rat periodontal ligament. The study was a randomized post test only control group design experimental study on 32 white male rats which are inducted by lipopolyssaccaride (LPS) for 8 days. And then rats divided into control group were given placebo, and treatment group were given 0.7% tetracycline HCL gel. On 10th days, the rats were euthanazided for taken mandibula alveolar bone tissue sampling and histological preparations were made by HE (Harris Hematoxylin-Eosin) staining. The data were analyzed using SPSS program processed using Shapiro Wilk for normality test and then continued using independent t-test. The result of this research is the mean number of fibroblasts at treatment group by administration of 0.7% tetracycline HCL gel (148.38±5.11 units) was higher than the control group (113.19±5.39 units). The mean of collagen synthesis was showed by the thickness of periodontal ligamen at group treated 0.7% tetracycline HCL gel (338.65±57.28 µm) was higher than the control group (225.50±45.29 µm). The mean number of fibroblast cell and thickness of periodontal ligament were statistically different (p<0.05). Thus, it is concluded that 0.7% tetracycline HCL gel enhance the number of fibroblasts cell and the thickness of periodontal ligament in rat with periodontal disease.
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