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Zaaba, Nurul Afiqah Amani Binti
- Corrosion of Orthodontic Metallic Brackets Immersed in Solutions of Salt and Spices in Artificial Saliva
Authors
1 Graduate Student, Saveetha Dental College, Saveetha University, Chennai, IN
2 Department of Orthodontic, Saveetha Dental College, Saveetha University, Chennai, IN
Source
Indian Journal of Forensic Medicine & Toxicology, Vol 14, No 1 (2020), Pagination: 351-355Abstract
Background: Orthodontic treatment is commonly use to treat dental malalignment, especially orthodontic braces as it help to realigned teeth to the normal position as well as for aesthetic purpose. As orthodontic braces is a choice of orthodontic treatment various kind of orthodontic braces had been invented based on the material used, adhesives systems as well as their strengths to bring about tooth movement. As it is placed in the oral cavity, the aggressive environments of the oral cavity, will lead to corrosion of the orthodontic brackets. This may affect it physical properties and clinical performance.
Aim: To study the corrosion of orthodontic brackets that immersed in the solution of artificial saliva and spices.
Materials and Method: Stainless steel orthodontic brackets were used for this studies. Each bracket was placed in the container contain artificial saliva and other agents. Several types of aqueous solutions were prepared for this study by using different agents (spices). They were pure artificial saliva, salt (sodium chloride), black pepper, turmeric and mixture of all of the spices along with salt. After 24 hours, surface changes was seen under the optical microscope.
Results: Based on the study, orthodontic brackets surface immersed in the controlled medium, revealed that more corrosion was seen in the salt medium when compared to pure artificial saliva. More pitting also was seen in the salt medium of the controlled group. Based on the surface analysis of the orthodontic brackets in the studied groups, demonstrate that more corrosion and pitting was seen in the aqueous solution of mixture of artificial saliva with salt and spices and less pitting and corrosion was seen in the turmeric solution.
Conclusion: Based on the study, the finding suggest that the corrosion behaviour of the orthodontic brackets is influenced by the presence of a salt (NaCl) and other spices. Salt and black pepper are responsible for the corrosion of the orthodontic brackets, while turmeric capable in reduction or slowing the process of corrosion.
Keywords
Corrosion of Brackets, Spices, Orthodontic Treatment.
- Cheiloscopy:The Study of Lip Prints in Sex Identification between Indian and Malaysian Population
Authors
1 Graduate Student, Saveetha University, Chennai, IN
2 Department of Oral Pathology, Saveetha Dental College, Saveetha University, Chennai, IN
Source
Indian Journal of Forensic Medicine & Toxicology, Vol 14, No 1 (2020), Pagination: 356-361Abstract
Background: The study of lip prints, is commonly applied in forensic odontology and it is known as cheiloscopy. The term cheiloscopy was derived from Greek words, in which “cheilos” means lip and “scopy” means to examine. In general, cheiloscopy is define as a method of identifying an individual based on the arrangement of lines seen on the red part of the lips or a science dealing with the various line appearing on the red part of the lips. The pattern of wrinkles and grooves that are present on the lips has distinct characteristic features of an individual which are almost similar to the fingerprints. It also will not change throughout the life. Therefore, it can be used for personal identification and sex determination.
Aim: To investigate lip print pattern in males and females and to evaluate them between Malaysian and Indian population.
Materials and Method: There were 40 participants of both gender. 20 of them are from the Malaysian population and another 20 people are from the Indian population. Each participant was instructed to clean their lips with a clean white cloth, before taking the lip print. This was followed by the application of dark coloured lip stick on lips by using the lip stick applicator. Cellophane tape was used to take the negative impression of the lip pattern. The glued portion of the cellophane tape was placed on the lips by giving a light pressure beginning from the centre of the lips till the corner of the mouth. Then, the impression was transferred to a clean white paper and seen under the magnifying glass.
Results: Type I lip pattern was commonly seen in Indian population, followed by type III, II and IV. Whereas for Malaysian population, type III was most common followed by type I, II and IV. There was significant difference between both population. In this study, it showed that type I was the most common lip print pattern seen in both Indian and Malaysian population for females. Whereas for male, type III was more common in Malaysian population, and both type III and IV were more common in Indian population.
Conclusion: There was no significant difference in both population according the general distribution of lip print pattern. There was no correlation or similarity of lip print patterns between each participants in both population. Thus, cheiloscopy can be used for sex determination and also personal identification.