A Comparison of Bubbles in Mixed Alginate Impression Materials between Alginate and Artificial Alginate Practicing Groups
Article Sidebar
Main Article Content
Abstract
A novel, inexpensive, material has been developed from diatomaceous earth and glutinous rice starch as an alternative to dental alginate to aid students in practice of alginate hand mixing. This study aimed to compare the performance of students who practiced with alginate to those practiced with artificial alginate in regards to air bubble formation on surface of alginate samples. Study participants included 40 first year dental students at the Faculty of Dentistry, Khon Kaen University who never practiced alginate mixing previously. All participants received information about alginate mixing via video instruction media. They were then randomly assigned into 2 groups with 20 participants each: alginate practicing group and artificial alginate practicing group. Surface air bubble formation in alginate samples was measured before and after practice for each participant. Differences between two groups were compared using Mann-Whitney U test, Shapiro-Wilk testing show non-normal distribution of data then non-parametric statistic was required to compare median instead. Mean of difference in group 1 is 5.3 mm2 and interquartile range is -2.0 to 15.9 mm2, Median of difference in group 2 is 5.5 mm2 and interquartile range is -3.9 to 19.5 mm2. Mann-Whitney U test show that median of difference in before and after practice of bubbles area on surface of alginate sample between group 1 and group 2 were no significant differences (p=0.96). The findings suggest that there is no difference in alginate mixing performance between students who practiced with alginate and those who practiced with artificial alginate.
Article Details
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการลงตีพิมพ์ในวิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นถือเป็นลิขสิทธิ์เฉพาะของคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือเพื่อกระทำการใด ๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษร จากคณะทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่นก่อนเท่านั้น
References
Arwatchanakan S, Rattanakanokchai K, Luengpailin S, Saikaew C, Sooksuntisakoonchai N. Effect of hand mixing and automatic machine mixing of alginate impression material of the existence of air bubbles and mechanical properties. Khon Kaen Dent J 2012;15(1):29-41.
Arwatchanakan S, Wiboonpin T, Luengpailin S, Sooksuntisakoonchai N, Arwatchanagarn M, Hovichitr W. The existence of air bubbles and mechanical properties of alginate impression material mixed by hand mixing, automatic machine invented automatic machine prototype 1 and 2. Khon Kaen Dent J 2014;17(2):133-43.
Powers JM, Wataha JC. Dental Materials: Properties and Manipulation. 10thed. St.Louis: Mosby Elsevier; 2013. 172-85.
Oermann MH, De Gagne JC, Phillips BC. Teaching in Nursing and Role of the Educator, 2nd ed.: The Complete Guide to Best Practice in Teaching, Evaluation, and Curriculum Development. Vol Second edition. New York, NY: Springer Publishing Company; 2018.47-74.
Kaewkumnerd K. Production of diatomaceous earth filter media in industrial filtration: research report. Chiang Mai: Science and Technology Service Center, Faculty of Science Chiang Mai University; 1992.
Atthaaroon C. Survey and research of Properties of Lampang diatomaceous earth for environmental work. Bangkok, Mineral Resources Analysis and Identification Division Department of Mineral Resources; 2001.24-9.
Inoue K, Song YX, Fujii K, Kadokawa A, Kanie T. Consistency of alginate impression materials and their evaluation. J Oral Rehabil 1999;26(3):203-7.
Guiraldo RD, Berger SB, Consani RL, Consani S, de Carvalho RV, Lopes MB, et al. Characterization of morphology and composition of inorganic fillers in dental alginates. Biomed Res Int 2014;24:1-6.
Nattrass C, Horwell CJ, Damby DE, Kermanizadeh A, Brown DM, Stone V. The global variability of diatomaceous earth toxicity: a physicochemical and in vitro investigation. J Occup Med Toxicol 2015;10:23-39.
Prajummueng P, Leelawatcharamart W. Starch digestive enzymes. J Acad Ser KKU 2003;11(4):28-31.
Satang N, Srijessadaruk V, Nantachai K, Voraputhaporn W. Acetylation and Cross-link Modification of Waxy Rice Starch to be used as Thickening Agent. KKU Res J 2002;2(2):1-5.
Reisbick MH, Garrett R, Smith DD. Some effects of device versus hand mixing of irreversible hydrocolloids. J Prosthet Dent 1982;47(1):92-4.
American dental association. American Dental Association Specification No. 18 Alginate Impression Materials. United States: American Dental Association;1992.