scholarly journals JUMLAH ION KROMIUM (Cr) DAN NIKEL (Ni) KAWAT ORTODONTIK STAINLESS STEEL YANG TERLEPAS DALAM PERENDAMAN SALIVA

e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Ciendy O. Jura ◽  
Lydia E. N. Tendean ◽  
P. S. Anindita
Keyword(s):  
Stainless Steel ◽  
Oral Cavity ◽  
Artificial Saliva ◽  
Steel Wire ◽  
Stainless Steel Wire ◽  
Control Group ◽  
Ion Release ◽  
Control Group Design ◽  
Orthodontic Wire ◽  
Experimental Laboratory

Abstract: Orthodontic stainless steel wire is one of the instrument components oftenly used in orthodontic treatment and may persist in the oral cavity for a long period of time. Orthodontic stainless steelwire in the oral cavity can be corrosive in the presence of Cr and Ni ion release which can be harmful to the human body and the stainless steel wire itself. This study aimed to determine the amount of Cr and Ni ions released from the stainless steel orthodontic wire that was immersed in artificial saliva. This was an experimental laboratory study with a posttest only control group design. Samples were analyzed by using a UV-Vis spectrophotometry to determine the released Cr and Ni ions in the saliva. Samples consisted of 4 brands of orthodontic stainless steel wires immersed in artificial saliva for 30 days with a temperature of 370C. Data were analyzed by using a computer program. The results showed that the release of Cr ions in samples A, B, C, and D respectively were: 0.302 ppm, 0.331ppm, 0,311 ppm, and 0.483 ppm meanwhile of Ni ions were 1.930 ppm, 1.778 ppm, 1.654 ppm, and 1.391ppm. Conclusion: The release of Cr and Ni ions varied in each sample of orthodontic stainless steel wire .Keywords: orthodontic stainless steel, Cr, Ni, artificial saliva, UV-Vis spectrophotometryAbstrak: Kawat ortodontik stainless steel merupakan salah satu komponen alat yang sering digunakan dalam perawatan ortodontik dan dapat bertahan dalam rongga mulut untuk jangka waktu yang lama. Kawat ortodontik stainless steel yang berada di dalam rongga mulut dapat mengalami korosi dengan adanya pelepasan ion Cr dan Ni yang bersifat merugikan bagi tubuh manusia dan kawat ortodontik itu sendiri. Penelitian ini bertujuan untuk mengetahui besarnya jumlah pelepasan ion Cr dan Ni dari kawat ortodontik stainless steel yang direndam dalam saliva buatan. Penelitian ini menggunakan metode eksperimental laboratorium dengan rancangan posttest only control group. Sampel diuji dengan menggunakan spektrofotometri UV-Vis untuk mengetahui pelepasan ion Cr dan Ni dalam saliva. Sampel terdiri dari 4 merek kawat ortodontik stainless steel direndam dalam saliva buatan selama 30 hari dengan suhu 370C. Data hasil penelitian dianalisis menggunakan program komputer. Hasil penelitian menunjukkan pelepasan ion Cr pada sampel A, B, C, dan D berturut-turut 0,302 ppm; 0,331 ppm; 0,311 ppm; dan 0,483 ppm sedangkan pelepasan ion Ni 1,930 ppm; 1,778 ppm; 1,654 ppm; dan 1,391 ppm. Simpulan: Pelepasan ion Cr dan Ni bervariasi dari masing-masing sampel kawat ortodontik stainless steel.Kata kunci : Kawat ortodontik stainless steel, Cr, Ni, saliva buatan, spektrofotometri UV-Vis

scholarly journals PELEPASAN ION NIKEL DAN KROMIUM BRAKET STAINLESS STEEL YANG DIRENDAM DALAM MINUMAN BERKARBONASI

e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Indri Sumule ◽  
P. S. Anindita ◽  
Olivia A. Waworuntu
Keyword(s):  
Stainless Steel ◽  
Treatment Group ◽  
Control Group ◽  
Ion Release ◽  
Corrosive Media ◽  
Control Group Design ◽  
Post Test ◽  
Experimental Laboratory ◽  
Uv Visible ◽  
Carbonated Drink

Abstract: Stainless steel bracket is one of metal components which is used in oral cavity. Metal substance that is implied can be corroded if it is placed in corrosive media, like carbonated drink. The corrosion can be seen from the release of Ni and Cr ions which are harmful for our bodies. This study aimed to obtain the release of Ni and Cr from stainless steel bracket after being immersed in carbonated drink. This was an experimental laboratory study with a post test only control group design. Samples were tested with spectrometry uv-visible to determine the release of Ni and Cr ions. There were 8 brackets as samples, divided into 2 groups, each of 4 samples. Stainless steel brackets were immersed in non-carbonated drink saliva and carbonated-drink saliva for 312 minutes. The results showed a difference of Ni and Cr ion release of both groups, but the group of brackets immersed in carbonated drink showed a greater release than the other group. The release of Ni ions in the control group had an average of 1.556 ppm and in the treatment group of 2.624 ppm meanwhile the release of Cr ions in the control group had an average of 0.038 ppm and in the treatment group of 0.109 ppm.Keywords: stainless steel bracket, ion Ni and Cr, carbonated drinkAbstrak: Braket stainless steel merupakan salah satu komponen logam yang digunakan didalam rongga mulut. Bahan logam tersebut dapat mengalami korosi bila berada di media korosif seperti minuman berkarbonasi. Korosi dapat dilihat dari pelepasan ion Ni dan Cr yang bersifat merugikan bagi tubuh. Penelitian ini bertujuan untuk mengetahui jumlah pelepasan ion Ni dan Cr dari braket stainless steel yang direndam dalam minuman berkarbonasi. Jenis penelitian ini ialah eksperimental laboratorik dengan rancangan post test only control group. Sampel dilakukan uji dengan alat spektrofotometri uv-visible untuk mengetahui pelepasan ion Ni dan Cr. Delapan buah sampel berupa larutan dibagi menjadi dua kelompok masing-masing dengan empat buah sampel. Braket stainless steel direndam dalam saliva tanpa minuman berkarbonasi dan saliva dengan minuman berkarbonasi selama 312 menit. Hasil penelitian menunjukkan terdapat perbedaan pelepasan ion Ni dan Cr pada kedua kelompok. Pada kelompok yang direndam dengan minuman berkarbonasi terjadi pelepasan ion Ni dan Cr lebih besar dengan rerata pelepasan ion Ni pada kelompok kontrol 1,556 ppm dan pada kelompok perlakuan 2,624 ppm, sedangkan rerata pelepasan ion Cr pada kelompok kontrol 0,038 ppm dan pada kelompok perlakuan 0,109 ppm. Kata kunci: braket stainless steel, ion Ni dan Cr, minuman berkarbonasi

Comparison of Chemical Properties and Ni Release of Stainless Steel and Nickel Titanium Wires

2014 ◽  
Vol 884-885 ◽  
pp. 560-565 ◽  
Author(s):  
Wassana Wichai ◽  
Niwat Anuwongnukroh ◽  
Surachai Dechkunakorn
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Artificial Saliva ◽  
Steel Wire ◽  
Nickel Titanium ◽  
The Other ◽  
Stainless Steel Wire ◽  
Niti Wire ◽  
Titanium Wire ◽  
Niti Wires

Objective: This study aimed to determine the composition and corrosion resistance of stainless steel and nickel titanium (NiTi) archwires and to compare Ni released from simulated standard fixed orthodontic appliances ligated with stainless steel and NiTi wires in artificial saliva at pH 5.14 and pH 6.69. in 4 weeks at 37oC. Materials and Method: Two commercial rectangular wires, 0.016 x 0.022 in size were studied, one Ormco stainless steel wire and another Ormco nickel titanium wire. Their composition was analyzed by an energy disporsive X-ray spectrometer (ESC) and their corrosion resistance was evaluated by a potentiodynamic polarization technique. For Ni release, the twenty-eight simulated fixed appliance sample sets were used, each corresponding to one half-maxillary arch. The samples were divided in 2 groups (14 sets per group). The first one was ligated to Ormco stainless steel archwires and the other one to Ormco NiTi archwires with elastomeric ligatures. Half sets of each group were immersed in 50 ml artificial saliva at pH 5.14 and the other half were immersed at pH 6.69. Ni release was quantified using flame atomic absorption spectrophotometry. Statistical analysis of variance (t-test) was determined on days 1, 4, 7, 9, 14, 21 and 28 comparing the amount of Ni released between groups. Results: Stainless steel wire was composed of Ni, Cr, Si, Mn and Fe while the nickel titanium wire was composed of Ti, Ni and Cr. NiTi wire has more percentage of Ni and therefore has less corrosion resistance than stainless steel wire. For Ni release, stainless steel and NiTi continuously increased at the time intervals for both pH levels. For group one, stainless steel wire had more Ni release at pH 5.14 and for the other group, NiTi wire had more Ni-release at pH 6.69. At 4 weeks, the Ni release of one half-maxillary arch was 1.383 ppm (1383 μg/l) at pH 5.14 and 1.079 ppm (1078 μg/l) at pH 6.69 for stainless steel wire while it was 1.221 ppm (1221 μg/l) at pH 5.14 and 1.267 ppm (1267μg/l) at pH 6.69 for NiTi wire. No significant difference was found in the amount of Ni release from stainless steel and NiTi wires at pH 5.14 and pH 6.69 in the different time intervals except on day 1 wherein the stainless steel archwire was significantly different (p<0.05) at pH 5.14 and pH 6.69. Conclusions: The NiTi wire had more Ni contain and less corrosion resistance than stainless steel wire. Stainless steel had more Ni release at pH 5.14 than pH 6.69 but NiTi had greater Ni release at pH 6.69 than pH 5.14.

scholarly journals Evaluation and Comparison of Two Different Mouthwashes on Frictional Resistance Between Orthodontic Bracket and Archwire: An in Vitro Study

2019 ◽  
Vol 53 (2) ◽  
pp. 117-125
Author(s):  
Jayanti Choudhary ◽  
B Shashikumar ◽  
Anand K Patil
Keyword(s):  
Stainless Steel ◽  
Artificial Saliva ◽  
Steel Wire ◽  
Testing Machine ◽  
Frictional Resistance ◽  
Control Group ◽  
Tea Tree ◽  
Custom Made ◽  
Significant Difference

Aims: This study aimed to evaluate and compare the effect of tea tree oil (TTO) mouthwash and chlorhexidine (CHX) mouthwash on frictional resistance. Settings and Design: In vitro. Materials and Methods: In total, 60 extracted premolars were mounted on a custom-made acrylic fixture. These 60 premolars were randomly divided into 3 groups of 20 each, on which 0.022″ × 0.028″ slot MBT stainless steel brackets were bonded and 0.019″ × 0.025″ rectangular stainless steel wire was ligated with an elastomeric module. The 3 groups included a control group where the samples were immersed in artificial saliva and 2 experimental groups immersed in 0.2% CHX and TTO mouthwash, respectively, for 1.5 hours. Postimmersion static frictional resistance was evaluated on a universal testing machine at crosshead speed of 0.5 mm/min. Statistical Analysis Used: Tukey’s post hoc procedure. Results: This study showed a statistically significant difference in the frictional resistance between saliva and CHX groups and CHX and TTO groups ( P < .05). No statistically significant difference was observed between saliva and TTO groups ( P > .05). The frictional resistance was more in the CHX mouthwash group than in the TTO mouthwash group. Conclusions: Frictional resistance was lesser in the TTO mouthwash than in the CHX mouthwash. Based on this result, TTO mouthwash can be used instead of CHX mouthwash as an oral hygiene aid in patients with orthodontic treatments.

scholarly journals A Simplified Spring winder For Clinical Application

2021 ◽  
Vol 6 (1) ◽  
pp. 24-26
Author(s):  
Abhik Purkayastha ◽  
◽  
Mahamad Irfanulla Khan ◽  
Nayeem Unnisa ◽  
◽  
...  
Keyword(s):  
Stainless Steel ◽  
Clinical Application ◽  
Treatment Time ◽  
Steel Wire ◽  
Stainless Steel Wire ◽  
Force Application ◽  
Effective Force ◽  
Orthodontic Wire ◽  
Functional Appliances ◽  
Gauge Stainless Steel

Introduction: The fabrication of coils using heavy gauge stainless steel wire for use in appliances such as the Churro Jumper can be a tedious task and can often result in spaced coils that lead to more flexibility than can be desired, leading to a decreased force application and hence overall lengthened treatment time. Using well placed, tightly adherent coils the force of which can be controlled by placement of the desired number of coils can help to mitigate this shortcoming. Technique: The spring winder described here is easy to fabricate using easily available stationary articles which can be repurposed to form an efficient winder that can coil springs with reduced effort as compared to that would have been required when using orthodontic pliers only. The stationary repurposed for this winder is the electric etching pen which provides a good framework for fabricating the winder. In addition, clear acrylic is used along with a syringe body to hold the winding components. The syringe is filled up with clear acrylic and winding rods are laid down within the acrylic which holds it firmly in place. In addition, the syringe body is embedded into the electric pen handle which allows for easy turning the winder so as to exert effective force while reducing operator effort and fatigue. This also allows for winding of heavy gauge orthodontic wire with little effort. Conclusion: A simplified spring winder can be best indicated for the fabrication of coils for fixed functional appliances like Churro Jumper.

scholarly journals Mandibular Symphysis Stabilization after Traumatic Disjunction in a Crab-Eating Fox (Cerdocyon thous)

2018 ◽  
Vol 46 ◽  
pp. 5
Author(s):  
Bruna Zafalon-Silva ◽  
Laurenn Bittencourt Silva ◽  
Priscila Medina Da Costa ◽  
Miúrel De Aquino Goulart ◽  
Victória Regina Queiroz Schmidt ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Oral Cavity ◽  
Soft Tissues ◽  
Steel Wire ◽  
Recovery Period ◽  
Stainless Steel Wire ◽  
Ventral Region ◽  
Mandibular Symphysis ◽  
Hospitalization Period ◽  
Cerdocyon Thous

Background: Fractures and dislocations are common orthopedic conditions arising from traumas from anthropic interaction on wild species, such as those caused by road trampling, being the mandibular separation with great frequency of occurrence in dogs and cats. The procedures for mandibular symphysis stabilization are described as of low complexity in the literature, however no reports of this procedure in wild canids were found. The purpose of this study is to report a surgical procedure of mandibular symphysis disjunction stabilization in an individual of the species Cerdocyon thous (crab-eating fox) through the technique of cerclage fixation using stainless steel wire.Case: An adult male individual of the free-living specie weighing 5.6 kg was referred to veterinary care after having been run-over. General physical examination showed abrasions in the ventral region of the jaw, discreet bleeding in the oral cavity, and mandibular instability. Subsequently, the patient underwent radiographic examination that revealed mandibular disjunction. The patient was therefore referred to the surgical unit for stabilization. During surgical anesthesia, two 12-gauge hypodermic needles (40x12 mm) were inserted percutaneously through the ventral region of the mandible, protruding into the oral cavity immediately caudal to the canine teeth. Next, both extremities of a 0.5 mm stainless steel wire were introduced into the interior of the needles and, when both ends extruded through the other end of the needles, the latter were removed, leaving only the steel wire uniting both rostral rami of the mandible. Using a twisting apparatus, the steel wire was twisted until the disjunction was completely stabilized and mandibular occlusion was deemed appropriate. Lastly, the surplus steel wire was sectioned, leaving a small segment that remained exposed to surface in the ventral region of the mandible. During the patient’s recovery period no complications or recurrence were observed, signifying a successful stabilization procedure by the chosen technique. Thirty-four days postoperatively, the metallic implant was removed under radiographic guidance, and the patient discharged after confirming adequate oral occlusion. After recuperation, the animal was referred to the responsible environmental agencies to be released back into the wild, 55 days postoperatively.Discussion: Among the several techniques described for mandibular symphysis stabilization, success was obtained in this case using the technique of cerclage fixation using stainless steel wire. The procedure in question was chosen for its easy implantation, low cost, and short time of permanence of the implant, which led to a reduction in the patient’s stay in captivity, favoring his rehabilitation and aiming at an early return of the individual to its habitat. There is no consensus of mean healing time of the mandibular symphysis or the period the implant should stay in situ, with reported periods varying from three to four weeks to six to eight weeks. Several factors may influence the formation of the bone callus, including proper stabilization of the hemimandible, occlusal alignment, preservation of hard and soft tissues, and preservation of the dentition, which can lead to quicker return of mandibular function. During the hospitalization period, no surgical complications were observed on periodic clinical evaluations. Thus, we conclude that this stabilization of mandibular symphysis in an individual of the species Cerdocyon thous with cerclage using steel wire, with adequate preoperative and postoperative management, was successful in the treatment of traumatic disjunction.

scholarly journals Perbedaan Pelepasan Ion Nikel (Ni) dan Kromium (Cr) Kawat Ortodonti Stainless Steel pada Perendaman Pasta Gigi Ortodonti dan Non-Ortodonti

e-GIGI ◽  
2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Loisaviny H. D. Wondal ◽  
P. S. Anindita ◽  
Elita Tambunan
Keyword(s):  
Stainless Steel ◽  
Citric Acid ◽  
Artificial Saliva ◽  
Control Group ◽  
Control Group Design ◽  
Chromium Ion ◽  
Group Design ◽  
Chromium Ions ◽  
Post Test ◽  
Orthodontic Archwires

Abstract: Recently, orthodontic toothpaste with colostrum has been introduced which is different from non-orthodontic toothpaste. Albeit, orthodontic and non-orthodontic toothpastes contain citric acid and some kinds of sodium compounds that can initiate corrosion of stainless steel orthodontic archwire indicated by the release of nickel and chromium ions. This study was aimed to determine the difference in nickel and chromium ion releases from the stainless steel orthodontic archwires immersed in artificial saliva plus orthodontic toothpaste or non-orthodontic toothpaste. This was a true experimental study with a post-test only control group design. Samples were stainless steel orthodontic archwires immersed in artificial saliva plus orthodontic toothpaste or non-orthodontic toothpaste. Released nickel and chromium ions were analyzed with atomic absorption spectrometer (AAS). In both treatment groups (orthodontic and non-orthodontic pastes), the independent t-test showed that the P value of released nickel ions was 0.572 and of released chromium ions was 0.059 (P >0.05). Conclusion: There were no significant differences between the release of nickel and chromium ions of stainless steel orthodontic archwires immersed in artificial saliva plus orthodontic toothpaste and in artificial saliva plus non-orthodontic toothpaste.Keywords: stainless steel orthodontic archwire, nickel and chromium ion, orthodontic and non-orthodontic toothpaste. Abstrak: Dewasa ini sudah tersedia pasta gigi ortodonti dengan kandungan colostrum yang membedakannya dengan pasta gigi non-ortodonti. Pasta gigi ortodonti dan non-ortodonti mengandung citric acid dan beberapa jenis senyawa sodium yang dapat memicu terjadinya korosi pada kawat ortodonti stainless steel yang ditandai dengan pelepasan ion nikel dan kromium. Penelitian ini bertujuan untuk mengetahui apakah terdapat perbedaan jumlah pelepasan ion nikel dan kromium kawat ortodonti stainless steel yang direndam dalam pasta gigi ortodonti dan non-ortodonti. Jenis penelitian ialah eksperimental murni dengan post-test only control group design. Sampel yang digunakan yaitu kawat ortodonti stainless steel yang direndam dalam saliva artifisial ditambahkan pasta gigi ortodonti atau yang non-ortodonti. Pelepasan ion nikel dan kromium dianalisis menggunakan Spektrometri Serapan Atom (SSA). Hasil uji t tidak berpasangan pada kelompok perlakuan baik larutan pasta gigi ortodonti maupun yang non-ortodonti menunjukkan pelepasan ion nikel dengan P=0,572 dan pelepasan ion kromium dengan P=0,059 (P >0,05). Simpulan: Tidak terdapat perbedaan bermakna pelepasan ion nikel dan kromium pada kawat ortodonti stainless steel yang direndam dalam saliva artifisial ditambahkan pasta gigi ortodonti dibandingkan pasta non ortodonti.Kata kunci: kawat ortodonti stainless steel, nikel, kromium, pasta gigi ortodonti dan non ortodonti

scholarly journals Torque Expression in Stainless Steel Orthodontic Brackets

2010 ◽  
Vol 80 (1) ◽  
pp. 201-210 ◽  
Author(s):  
Amy Archambault ◽  
Ryan Lacoursiere ◽  
Hisham Badawi ◽  
Paul W. Major ◽  
Jason Carey ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Steel Wire ◽  
Orthodontic Brackets ◽  
Stainless Steel Wire ◽  
Measuring Device ◽  
Measuring Devices ◽  
Orthodontic Wire ◽  
Engagement Angle ◽  
Slot Size

Abstract Objective: To evaluate the quantitative effects on torque expression of varying the slot size of stainless steel orthodontic brackets and the dimension of stainless steel wire, and to analyze the limitations of the experimental methods used. Materials and Methods: In vitro studies measuring torque expression in conventional and self-ligating stainless steel brackets with a torque-measuring device, with the use of straight stainless steel orthodontic wire without second-order mechanics and without loops, coils, or auxiliary wires, were sought through a systematic review process. Results: Eleven articles were selected. Direct comparison of different studies was limited by differences in the measuring devices used and in the parameters measured. On the basis of the selected studies, in a 0.018 inch stainless steel bracket slot, the engagement angle ranges from 31 degrees with a 0.016 × 0.016 inch stainless steel archwire to 4.6 degrees with a 0.018 × 0.025 inch stainless steel archwire. In a 0.022 inch stainless steel bracket slot, the engagement angle ranges from 18 degrees with a 0.018 × 0.025 inch stainless steel archwire to 6 degrees with a 0.021 × 0.025 inch stainless steel archwire. Active stainless steel self-ligating brackets demonstrate an engagement angle of approximately 7.5 degrees, whereas passive stainless steel self-ligating brackets show an engagement angle of approximately 14 degrees with 0.019 × 0.025 inch stainless steel wire in a 0.022 inch slot. Conclusions: The engagement angle depends on archwire dimension and edge shape, as well as on bracket slot dimension, and is variable and larger than published theoretical values. Clinically effective torque can be achieved in a 0.022 inch bracket slot with archwire torsion of 15 to 31 degrees for active self-ligating brackets and of 23 to 35 degrees for passive self-ligating brackets with a 0.019 × 0.025 inch stainless steel wire.

scholarly journals The toxicity of brown algae (Sargassum sp) extract to mice (Mus muscullus)

2016 ◽  
Vol 1 (2) ◽  
pp. 250 ◽  
Author(s):  
Rahmat Wariz ◽  
Nur Wahidah Asfar ◽  
Abul Fauzi
Keyword(s):  
Treatment Group ◽  
Oral Cavity ◽  
Group Treatment ◽  
Laboratory Research ◽  
Control Group ◽  
Control Group Design ◽  
Group 4 ◽  
Experimental Laboratory ◽  
Group 2 ◽  
Printed Materials

<span>Indonesian is a country with very large and overflow marine biological resources. Utilization of seaweed has been developed and become a source of revenue for Indonesian who live in coastal areas with high potential for seaweed.</span><span>The demand of seaweed in the world increases </span><span lang="EN-US">as</span><span> increas</span><span lang="EN-US">ing</span><span> in the use of seaweed for various purpose</span><span>among others in the fields of industry, food, textile, paper, paints, cosmetics, medical and pharmaceutical</span><span lang="EN-US"> field</span><span>. Alginate is one of materials that commonly used in the field of dentistry as printed materials to create study models. Materials in the field of dentistry must be biocompatible to the oral cavity tissues. The materials should be stable, safe, comfortable, and certainly doesn’t have a toxicity character to the oral cavity tissues and other tissues in human body. The purpose of this study </span><span lang="EN-US">is </span><span>to know the toxicity of extract brown </span><span lang="EN-US">algae</span><em><span>Sargassum sp</span></em><span> given orally to mice.</span><span>The research </span><span lang="EN-US">perform</span><span> experimental laboratory research type with</span><span>experimental post-tes-only control group design. The reseach samples </span><span lang="EN-US">apply</span><span>females white mice (<em>Mus muscullus</em>)</span><span lang="EN-US">. </span><span>Research samples d</span><span lang="EN-US">i</span><span>vided into 5 groups of 5 female mices for each treatment group. Treatment group 1 was given 500mg/</span><span lang="EN-US">kgBW </span><span>doses of <em>Sargassum sp</em>, group 2 was given 1000mg/KgBW doses of <em>Sargassum sp</em>, group 3 was given 1500mg/KgBW doses of <em>Sargassum sp</em>, group 4 were 2000mg/KgBW doses of <em>Sargassum sp</em>, and a control group was given only dose of Na CMC. The result of this study is</span><span>dose in humans are converted into 2000mg/KgBW in mice, is a doses that doesn’t cause the death of whole animals. Based of acute toxicity category, the extracts of <em>Sargassum sp</em> that obtained from Punaga Takalar Regency, South Sulawesi includes in the mild toxic.</span>

scholarly journals The toxicity of brown algae (sargassum sp) extract to mice (mus muscullus)

2016 ◽  
Vol 1 (2) ◽  
pp. 109
Author(s):  
Rahmat Wariz ◽  
Nur WR. Asfa ◽  
Abul Fauzi
Keyword(s):  
Treatment Group ◽  
Oral Cavity ◽  
Group Treatment ◽  
Laboratory Research ◽  
Control Group ◽  
Control Group Design ◽  
Group 4 ◽  
Experimental Laboratory ◽  
Group 2 ◽  
Printed Materials

Indonesian is a country with very large and overflow marine biological resources. Utilization of seaweed has been developed and become a source of revenue for Indonesian who live in coastal areas with high potential for seaweed.The demand of seaweed in the world increases as increasing in the use of seaweed for various purposeamong others in the fields of industry, food, textile, paper, paints, cosmetics, medical and pharmaceutical field. Alginate is one of materials that commonly used in the field of dentistry as printed materials to create study models. Materials in the field of dentistry must be biocompatible to the oral cavity tissues. The materials should be stable, safe, comfortable, and certainly doesn’t have a toxicity character to the oral cavity tissues and other tissues in human body. The purpose of this study is to know the toxicity of extract brown algaeSargassum sp given orally to mice.The research perform experimental laboratory research type withexperimental post-tes-only control group design. The reseach samples applyfemales white mice (Mus muscullus). Research samples divided into 5 groups of 5 female mices for each treatment group. Treatment group 1 was given 500mg/kgBW doses of Sargassum sp, group 2 was given 1000mg/KgBW doses of Sargassum sp, group 3 was given 1500mg/KgBW doses of Sargassum sp, group 4 were 2000mg/KgBW doses of Sargassum sp, and a control group was given only dose of Na CMC. The result of this study isdose in humans are converted into 2000mg/KgBW in mice, is a doses that doesn’t cause the death of whole animals. Based of acute toxicity category, the extracts of Sargassum sp that obtained from Punaga Takalar Regency, South Sulawesi includes in the mild toxic.

scholarly journals UJI PELEPASAN LOGAM KROMIUM (Cr) DAN NIKEL (Ni) BEBERAPA MEREK BRAKET STAINLESS STEEL DALAM CAIRAN SALIVA ARTIFISIAL

e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Chealsea J. Siwy ◽  
Lydia E. N. Tendean ◽  
P. S. Anindita
Keyword(s):  
Stainless Steel ◽  
Artificial Saliva ◽  
Saliva Sample ◽  
Corrosion Process ◽  
The Body ◽  
Metal Corrosion ◽  
Control Group ◽  
Control Group Design ◽  
Group Design ◽  
Nickel Sample

Abstract: Stainless steel bracket, a popular fixed orthodontic appliance containing chromium and nickel, is used most frequently in fixed orthodontic treatment. Stainless steel bracket interacts with oral cavity environment and causes metal corrosion process. The released chromium and nickel due to the corrosion process can get into the body and cause hypersensitivity reactions. This study aimed to determine the release of chromium and nickel from stainless steel bracket in artificial saliva. This was an experimental laboratory study with a quasy experimental and nonequivalent control group design. Samples were analyzed by using spectrophotometry ultraviolet visible (UV-Vis) to determine the releasing of chromium and nickel. There were 4 kinds of stainless steel bracket immersed and stored in artifisial saliva at 37oC for 30 days. The result showed that each sample varied in the release of chromium and nickel from stainless steel brackets in the artificial saliva. Sample A had 0.025 ppm chromium and 0.689 ppm nickel; sample B had 0.002 ppm chromium and 1.012 ppm nickel; sample C had 0.008 ppm chromium and 1.130 ppm nickel; and sample D had 0.027 ppm chromium and 1.176 ppm nickel. The release of nickel of each sample was higher than of chromium. There was no specific pattern of the release of chromium and nickel due to the different composition of stainless steel brackets which depend on the manufacturers.Keywords: stainless steel bracket, chromium, nickel, spectrophotometry UV-Vis, artificial salivaAbstrak: Braket stainless steel sering digunakan dalam perawatan ortodonti cekat yang umumnya mengandung kromium dan nikel. Braket stainless steel akan berinteraksi dengan lingkungan dalam rongga mulut sehingga menyebabkan proses korosi. Pada proses korosi terjadi pelepasan logam kromium dan nikel yang dapat masuk ke dalam tubuh dan dapat mengakibatkan reaksi hipersensitivitas. Penelitian ini bertujuan untuk mengetahui besarnya logam kromium dan nikel yang terlepas dari braket stainless steel dalam cairan saliva artifisial. Penelitian ini menggunakan metode eksperimental laboratorik dengan jenis penelitian pra eksperimental serta desain penelitian nonequivalent control group design. Sampel diuji menggunakan spektrofotometri UV-Vis untuk mengetahui pelepasan logam kromium dan nikel. Sampel terdiri dari 4 macam merek braket direndam dalam larutan saliva artifisial selama 30 hari pada suhu 37oC. Data hasil penelitian diolah menggunakan komputerisasi. Hasil penelitian menunjukkan terdapat pelepasan logam kromium dan nikel dalam saliva artifisial yang bervariasi di tiap sampel. Sampel A memiliki pelepasan kromium 0,025 ppm dan nikel 0,689 ppm; sampel B memiliki pelepasan kromium 0,002 ppm dan nikel 1,012 ppm; sampel C memiliki pelepasan kromium 0,008 ppm dan nikel 1,130 ppm; dan sampel D memiliki pelepasan kromium 0,027 ppm dan nikel 1,176 ppm. Pelepasan nikel pada tiap sampel lebih tinggi dibandingkan dengan pelepasan kromium. Hasil penelitian tidak menunjukan pola tertentu, hal ini dapat disebabkan karena komposisi yang berbeda-beda dari braket stainless steel tergantung ketentuan masing-masing pabrik pembuatnya.Kata kunci: braket stainless steel, kromium dan nikel, spektrofotometri UV-Vis, saliva artifisial

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