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Finite element method usage in determining pressure distribution of periodontal tissues on maxillary canine as result of orthodontic force Elih, E.; Hambali, Tono S.; Salim, Jono; Mardiati, Endah
Padjadjaran Journal of Dentistry Vol 23, No 2 (2011): July
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.81 KB) | DOI: 10.24198/pjd.vol23no2.14016

Abstract

The purpose of this study is to obtain data of pressure distribution on canine periodontal tissues due to the orthodontic force generated by various types of motion using the Finite Element Method. The development of digital technology creates a numerical analysis for orthodontic treatment that can be done by performing 3-D reconstruction by scanning the maxillary canine teeth with a CT scan so that 255 cross-sectional images is obtained. 3 D model is then processed using the Finite Element Method to obtain the pressure distribution on the periodontal tissues caused by tipping movements, bodily, torque, roots, rotation, and extrusion. The analysis used was the analysis of qualitative and quantitative analysis. The results showed that the maximum pressure that occurs in the periodontal tissues caused by a variety of movements ranging from 3.3 x 10-3MPa to 2.9 x 10-2 MPa. This indicates that the force exerted on each movement produces maximum pressure that exceeds capillary pressure was 2 x 10-3 MPa.
Nickel induced allergic contact stomatitis in treatment using fixed orthodontic appliance Elih, E.
Padjadjaran Journal of Dentistry Vol 19, No 3 (2007): November
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1458.7 KB) | DOI: 10.24198/pjd.vol19no3.14164

Abstract

Hypersensitivity towards the metals used in fixed orthodontic is sometimes seen in patients who receive orthodontic treatment with clinical symptoms found intraorally. Nickel is the metal that may cause sensitivity and often causes slow hypersensitivity reaction (immune response type IV) because nickel is the main component of orthodontic alloy. The allergic reaction is found in the form of oral inflammation triggered by the corrosion of orthodontic alloy. The allergic reaction is seen in the form of oral inflammation triggered by corrosion of orthodontic materials and continuous nickel particle release. Young patients, especially female patients, with allergic reaction show a predisposition of NiACS (Nickel Induced Allergic Contact Stomatitis) clinical symptoms. Therefore, dentists and orthodontists should be more careful and cautious in doing a clinical examination to patients through data collecting data on history of abnormalities and health history in the effort of making diagnosis and plan appropriate treatment.
Nickel induced allergic contact stomatitis in treatment using fixed orthodontic appliance Elih, E.
Padjadjaran Journal of Dentistry Vol 19, No 3 (2007): November 2007
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1458.7 KB) | DOI: 10.24198/pjd.vol19no3.14164

Abstract

Hypersensitivity towards the metals used in fixed orthodontic is sometimes seen in patients who receive orthodontic treatment with clinical symptoms found intraorally. Nickel is the metal that may cause sensitivity and often causes slow hypersensitivity reaction (immune response type IV) because nickel is the main component of orthodontic alloy. The allergic reaction is found in the form of oral inflammation triggered by the corrosion of orthodontic alloy. The allergic reaction is seen in the form of oral inflammation triggered by corrosion of orthodontic materials and continuous nickel particle release. Young patients, especially female patients, with allergic reaction show a predisposition of NiACS (Nickel Induced Allergic Contact Stomatitis) clinical symptoms. Therefore, dentists and orthodontists should be more careful and cautious in doing a clinical examination to patients through data collecting data on history of abnormalities and health history in the effort of making diagnosis and plan appropriate treatment.