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<![CDATA[Differences in nickel ions released from nickel-titanium arch wire after immersion in detergent and non-detergent toothpaste ]]>
<![CDATA[Hilda Fitria Lubis]]>;
<![CDATA[Kholidina Imanda Harahap]]>;
<![CDATA[Nadia Tamari Lubis]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.41564
<![CDATA[Nickel-titanium (NiTi) arch wire has properties that favor its use during the leveling and aligning phase of orthodontic treatment. This NiTi orthodontic arch wire has the potential to experience nickel ion release. One factor that can cause the release of nickel ions is toothpaste. Nickel ions released can enter the body and cause carcinogenic, mutagenic, cytotoxic, and allergic effects. The purpose of this study was to see the differences of nickel ions released from NiTi orthodontic arch wire after immersion in detergent and non-detergent toothpaste. This was a laboratory experimental research to draft a comparative design. The sample size was 40 pieces of NiTi orthodontic arch wire which were divided into 2 groups, immersion in detergent toothpaste and immersion in non-detergent toothpaste. The sample used was NiTi arch wire solution immersed in toothpaste and distilled water for 24 hours in an incubator at 37 °C then measured using inductively coupled plasma (ICP) mass spectrometer to determine the released nickel ions. Data were analyzed usingMann-Whitney test. The Mann-Whitney test resulted in a value of 0.872 (p≥0.05) which indicates no significant difference between the two groups. The study concluded that there is no difference in the nickel ions released from NiTi orthodonticarchwire after immersion in detergent and non-detergent toothpaste.]]>
<![CDATA[Effectivity of ozone water application on the socket after posterior tteeth extraction to accelerate clotting time phase ]]>
<![CDATA[Isnandar Isnandar]]>;
<![CDATA[Rahmi Syaflida]]>;
<![CDATA[Abdullah Oes]]>;
<![CDATA[Yuni Nurul Fairuz]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.42461
<![CDATA[After tooth extraction, dentists always place sterile tampons on the extracted socket to stop bleeding, to prevent infection and to reduce patients’ discomfort. Ozone is a biocompatible, bactericidal gas that can accelerate the healing of wounded soft tissue. In addition, it comes up with hemostasis effect to stop bleeding and may accelerate the clotting time and wound healing. Another advantage of ozone therapy is that it can be treated without making any trauma. The purpose of this research is to evaluate the effectivity of ozone water application in the socket to accelerate clotting time phase after posterior teeth extraction in 3 minutes, 6 minutes, and 10 minutes. This research was clinical experimental research with post-test only control group design. The research sampling was done through non-probability sampling. Then, sample was divided into two groups, each of which consisted of 15 patients treated with ozone tampons and 15 patients treated with sterile tampons after tooth extraction. Data were analyzed using chi-square test, and results showed a significant difference between the two groups. Ozone tampons show better result in accelerating clotting time after posterior teeth extraction than sterile tampons.]]>
<![CDATA[Enhancing the impact strength of acrylic resin base plate by adding non-dental E-glass fiber ]]>
<![CDATA[Mara Gustina]]>;
<![CDATA[Widjijono Widjijono]]>;
<![CDATA[Endang Wahyuningtyas]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.42939
<![CDATA[Non-dental glass fiber is one of the materials that can be used to increase the impact strength of a acrylic resin base plate, containing a similar composition to that of dental e-glass fiber. Orientation and positions of fiber affect the reinforcement effectiveness. This research aimed to examine the effect of the orientation of non-dental glass fiber in the compression position on the impact strength of an acrylic resin base plate. The research was conducted on 16 acrylic resin plates with fiber (65 mm x 10 mm x 2.5 mm) addition. The samples were divided into 4 groups (combination of different woven orientation unidirectional, bidirectional woven in the compression position, and control). The material used in this study was heat-cured acrylic resin QC-20 brand, non-dental glass fiber (without any brand). Impact strength was tested using an impact testing machine. The data obtained were analyzed using one-way ANOVA test and LSD (p<0.05). In this research the impact strength of the base plate with the addition of fiber increased 8.54 ± 2.21; 13.21 ± 2.34; 16.81 ± 2.80 kJ/m2 compared to that of the control group, i.e. 4.98 ± 1.05 kJ/m2. One-way ANOVA test showed a significant effect (p<0.05) of the fiber orientation variations on the compression position. This research concluded that the addition of nondental e-glass fiber (composed of SiO252.56-56.88%), diameter 17.12–20.03 µm) in the compression zone increases theimpact strength of acrylic resin base plate. Fibers with unidirectional orientationprovides the highest increase in the impact strength of acrylic resin base plate.]]>
<![CDATA[The use of carbonate apatite bioglass cement as pulp capping material examined from reparative dentin ]]>
<![CDATA[Indah Puti Rahmayani Sabirin]]>;
<![CDATA[Myrna Nurlatifah Zakaria]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.43469
<![CDATA[Root canal infection potentially develops to periapical infection as a result of opening of pulp chamber as a pathway for irritants to periapical area. Proper pulp capping procedure can be done to prevent root canal infection by preserving the vitality of the pulp and inducing reparative dentin. Generally, calcium hydroxide (Ca(OH2)) is used as pulp capping material although it stil3Ap) and CO3Ap bioglass cement are bioceramic materials proven for their ability to form new bone structure upon a research on bone tissue. These materials have better mechanical strength than Ca(OH2) and have the ability to set in humid environment similar to the body’s physiological condition. This study was a preclinical trial of CO3Ap and CO3Ap bioglass cement as pulp capping material. The materials were applied on a perforation site of 24 Wistar rat teeth, divided into 4 groups of different treatments, negative control (no treatment), positive control (Ca(OH2)), CO3Ap, and CO3Ap bioglass, respectively. Following the application of the pulp capping materials, the perforation sites were covered with light-cured glass ionomer cement. Evaluation of reparative dentin was performed after 21 days, where the rats were euthanized, and histopathological specimens were stained using hematoxylin and eosin. The results of the study revealed that dentinal bridge was formed on all the treatment and positive control groups (p=0.000) but not on the negative control. We concluded that CO3Ap as well as CO3Ap bioglass cement have the ability to induce the formation of reparative dentin, therefore both materials can be considered as pulp capping material for open pulp or thin dentin condition on pulp chamber roof.]]>
<![CDATA[The effect of Zirconium Dioxide nanoparticles concentrations as filler on heat cured acrylic resin denture base toward viability of fibroblast cells (in vitro study) ]]>
<![CDATA[Rudy S]]>;
<![CDATA[Titik Ismiyati]]>;
<![CDATA[Endang Wahyuningtyas]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.44345
<![CDATA[Heat cured acrylic resin is the most commonly used denture base materials. Zirconium dioxide (ZrO2) nanoparticles can be applied as additional filler to increase mechanical strength and to reduce the amount of residual monomer. The aim of this research is to analyze the effect of ZrO2 nanoparticles concentrations as filler on heat cured acrylic resin denture base toward viability of fibroblast cells. Twenty four disc-shaped heat cured acrylic resin plate (diameter 5 mm; width 2 mm), were divided into 4 groups (n=6), they were consisted of group I control (acrylic resin), group II acrylic resin with 2.5% ZrO2, group III acrylic resin with 5% ZrO2, and group IV acrylic resin with 7.5% ZrO2. Cell viability was obtained using MTT assay and ELISA plate reader. The result is examined with one way ANOVA followed by LSD post hoc assessment. The result showed highest cell viability percentage on experimental group of 2.5% ZrO2 with value as high as 97.49%. One way ANOVA test and LSD post hoc test showed a significant difference between groups (p<0.05). The conclusion of this research is ZrO2 nanoparticles concentration utilized as filler on heat cured acrylic resin denture base is effect to viability of fibroblast cells, and ZrO2 nanoparticles 2.5% shows the highest viability of fibroblast cell compared to 5% and 7.5% ZrO2 nanoparticles concentrations ]]>
<![CDATA[Correlation of saliva characteristics and caries in beta-thalassemia major patients ]]>
<![CDATA[Siti Rusdiana Puspa Dewi]]>;
<![CDATA[Sherly Septhimoranie]]>;
<![CDATA[Suryadi Muchzal]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.45969
<![CDATA[A patient with beta-thalassemia major is known to have poor oral hygiene and a high risk of caries. Some studies showed that patients with beta-thalassemia have low salivary flow rate and acidic saliva. A reduction in salivary flow rate and pH would increase caries susceptibility. The aim of this study was to determine the correlation between salivary flow rate and pH with DMFT index in patients with beta-thalassemia major. This study was a cross-sectional design. A total of 38 patients with beta-thalassemia major aged more than 12 years old at Dr. Mohammad Hoesin Palembang Hospital were included in this study. Their unstimulated saliva was collected by spitting methods, and the teeth were examined with DMFT Index. The salivary flow rate was expressed as ml/min and the pH was measured using a saliva pH indicator paper. Data were analyzed using Pearson correlation test to determine the correlation between variables. The result showed that the mean age of the patients in this study was 16.6 years old, with a higher number of female patients than males. Patients with beta-thalassemia major had low salivary flow rate (0.72 ml/5 min), acidic saliva (6.34), and high DMFT index (8.34). This correlation was statistically significant (p<0.01). It can be concluded that there is a strong negative relation between DMFT index with salivary flow rate and salivary pH in patients with beta-thalassemia major.]]>
<![CDATA[Chewing gum supplemented with Brassica oleracea var. capitata f. rubra extract for pH detecting of artificial saliva ]]>
<![CDATA[Fifit Indriyantari]]>;
<![CDATA[Aprilia Nur Pratiwi]]>;
<![CDATA[Rizky Septiano Andian]]>;
<![CDATA[Ida Bagus Alit Rai Sugiharta]]>;
<![CDATA[Archadian Nuryanti]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 3 (2020): December ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.37145
<![CDATA[The prevalence of oral diseases in Indonesia is 25,9% in 2018, the highest percentage is recorded being caused to dental caries. Oral condition which may be acidic due to foods is potential to cause dental caries, as oral bacteria activities such as S. mutans may transform foods into becoming acids. In current condition, it is difficult for people to detect their own acid and base oral condition independently. This study aimed to create an innovation of a chewing gum supplemented with red cabbage (Brassica oleracea var. capitata f. rubra) extract which has functions as oral pH detector. The chewing gum was made by mixing the maceration extract of red cabbage and gumbase. This study was performed by using a qualitative test of pH 1-13 buffer solution colour change and pH 5-9 artificial saliva which was added by the extract, and then tested with manufactured chewing gum. Anthocyanin level was tested by using a 520 and 700 nm UV-Vis spectrophotometer. The study resulted in colour change in colour qualitative test. On pH 5-9 artificial saliva, colour change happened in order of orange, orange-brown, brown, brown-green, and green, after it was mixed with chewing gum. Colour compatibility test on chewing gum and artificial saliva showed a compatibility percentage of 80. Chewing gum supplemented with red cabbage can be used as pH detector of pH 5-9 artificial saliva.]]>
<![CDATA[Surface roughness and colour changes of nanofilled composite resin after immersion in yogurt drink ]]>
<![CDATA[Sindy Widyaningrum]]>;
<![CDATA[Purwanto Agustiono]]>;
<![CDATA[Harsini Harsini]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 3 (2020): December ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.41479
<![CDATA[Nanofilled composite resin is one of restorative materials with some weaknesses, such as changes of colour and surface roughness. These weaknesses are attributed to some factors, including frequent consumption some beverages, including yoghurt drinks. This study aims to determine the effect of long immersion of nanofilled composite resin in guava yogurt drink on discoloration and changes in surface roughness. Subjects of the study were nanofilled composite resin materials (3M Filtek Z350XT shade A3) in cylindrical shape with a diameter of 10 mm and 2 mm thickness. Study was conducted by immersing nanofilled resin composites in 10 mL of guava yogurt drink at 37 °C. Twelve specimens were divided into 3 groups with immersion duration of 12 hours, 24 hours, and 36 hours. Surface roughness measurements were carried out using a profilometer Starrett SR300 surface roughness tester, while the colour measurement parameters according to the system L * a * b * was measured using chromameter Konica Minolta CR-400 before and after treatment. Data of changes in surface roughness and colour changes data (ΔE) were calculated and analysed using one-way ANOVA. The results showed insignificant surface roughness changes but significant colour changes in nanofilled composite resin in the groups of 12 hours, 24 hours, and 36 hours. It is concluded that immersion duration in guava yoghurt drink significantly affects the colour of nanofilled composite resin.]]>
<![CDATA[Differences in maturity pattern between mandibular posterior teeth and sagittal skeletal malocclusion ]]>
<![CDATA[Shinta Amini Prativi]]>;
<![CDATA[Ria Noor Firman]]>;
<![CDATA[Belly Sam]]>;
<![CDATA[Avi Laviana]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 3 (2020): December ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.43798
<![CDATA[The availability of X-rays in dentistry may help visualize the stage of development of dental maturity. The high prevalence of malocclusion in a population and contradictory research results on dental maturation in each skeletal malocclusion encourage the authors to know the maturity pattern of the posterior mandibular teeth in each skeletal relation and the difference in women and men. A cross-sectional study was conducted with a sample size of 214 panoramic and cephalometric radiographs from skeletal malocclusion patients based on ANB angle (class I: 73, class II: 75, class III: 56) with an age ranging from 8 to16 years old. Maturation of the second premolar and second molar was assessed using Demirjian method. Statistical analysis used the non-parametric Kruskal Wallis test to show the difference in maturity patterns in each class of skeletal relations and Mann Whitney test to show the difference in females’ and males’ maturity patterns. There were significant differences in females and males dental maturity patterns in which female dental maturation was advanced than male. Differences in each skeletal relationare not significant.]]>
<![CDATA[The retention difference between cobalt chromium and zirconia coping in different angulations on telescopic overdenture ]]>
<![CDATA[Kevin Christopher Kawilarang]]>;
<![CDATA[Heriyanti Amalia Kusuma]]>;
<![CDATA[Murti Indrastuti]]>
<![CDATA[ Majalah Kedokteran Gigi Indonesia Vol 6, No 3 (2020): December ]]>
Publisher : <![CDATA[Faculty of Dentistry, Universitas Gadjah Mada ]]>
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DOI: 10.22146/majkedgiind.44383
<![CDATA[Telescopic overdenture is one type of removable denture that uses dual coping system that consists of primary and secondary coping. Retention of telescopic overdenture is obtained from the friction between primary and secondary coping, which is mainly influenced by the type of material and coping angulation. The purpose of this study is to determine the retention differences between CoCr and zirconia coping with 0°, 1°, and 2° angulations. Twenty four pairs of telescopic overdenture coping samples with 6 mm length were divided into 6 groups (n = 4), CoCr 0°, CoCr 1°, CoCr 2°, zirconia 0°, zirconia 1°, and zirconia 2°. Measurement of retention between coping is done by pull-off test using universal testing machine (UTM) and data were analyzed by two way ANOVA. The results showed that the largest average retention was found in zirconia coping with 0° angulation group (22.48 N), while the smallest average retention was found in CoCr coping with 2° angulation group (10.28 N). Two way ANOVA revealed that there were significant differences among groups (p<0.05). LSD tests showed that there were significant differences among all of groups. This study concludes that zirconia coping has higher retention than CoCr coping and coping with 0° angulation has the highest retention.]]>
