The Effect of Acid Solution on Dental Magnetic Attachment

Dental magnetic attachments used as a retainer for overdentures are encapsulated with a corrosion resistant casing to prevent corrosion of magnets. However, some studies reported that the casing still has a risk of corrosion. This study aims to determine the effect of acid solutions on magnetic attractive force, dissolving metal ions and corrosion of magnetic attachment surfaces. The dental magnetic attachment material used is Magfit DX 600 (Aichi, Japan). It consists of assembly and keeper. The assembly and keeper immersed in acid solutions with a pH of 3.8 and 5.8 for 7 and 14 days. After immersion, the assembly and keeper were analyzed using SEM, universal testing machine, and the atomic absorption spectrophotometry to determine the surface corrosion, the magnetic attractive force, and dissolved metal ions, respectively. It is found that all assemblies showed signs of corrosion and reduction of magnetic attractive force after immersed in acid solutions with a pH of 3.8 and 5.8 for 7 and 14 days. A greater decrease in magnetic attraction was obtained at 14 days immersion in an acid solution with a pH of 3.8. Fe ion dissolution in the assembly and keeper was found to increase at 14 days of immersion. The lower the pH of the acid solution and the longer the immersion time, the signs of corrosion on the surface of dental magnetic attachment are clearly observed. The magnetic attraction force also decreased with decreasing the value of pH as well as the increase of the content of Fe ion in immersed solution.

Clinical Application of CSC Telescopic Denture with Magnetic Attachment in Treating Class III Molar Furcation Involvement-A Case Report

The clinical observations of periodontal and prosthetic therapies using retrospective and radiographic evaluation have indicated that molars affected with advanced furcation involvement (FI) are more prone to reducing clinical periodontal support and losing clinical attachments. The present case showed approach using molar root separation and the design of unilateral CSCTD and magnetic attachment to treating the right maxillary secondary molar with Class II and III furcation involvement. Result showed a remarkable improvement around periodontal tissue of the inner crowns and infra-furcation and furcation roof 14 years later. It can be concluded that the design of the CSCTD combined with magnetic attachment appears to be an effectiveness method in treating advanced molar furcation problems.

OBTURATOR FABRICATION WITH MAGNET ATTACHMENT

Background: Development of science and technology led to people having birth defects (congenital), trauma or because of there sected tumor can be made of a prosthesis. Purpose: To learn the technique of making obturator with magnet attachment. Review: Assembly of magnet in obturator can improve the stability and retention of the prosthesis. Conclusion: The techniques of making obturator with magnetic attachment begins with making the double impression. The part defect is waxed on a master cast, and the contoured wax lid was fabricated on the master cast to close the hollow obturator. The lid along with the magnetic assembly was attached to the obturator with auto polymerizing resin. Obturator is inserted in the patient and created a master cast for the fabrication of denture. Wax of master cast of denture is assembled magnet for attachment to the obturator, then flasking, wax boil-out of master cast, acrylic processing, deflasking, finishing, and polishing.

Mandibular implant-retained overdenture with magnets in total edentulous patients (case report)

Objective: According to the manufacture, fewer than 1 in 10 capsule associated with overdentures on natural teeth separated from the denture base during an 8-year clinical trial; more interestingly, none experience loss of magnetic attraction.Methods: A 50 year old female patient came to Dental Hospital Makassar Hasanuddin University wanted to fix a loose denture, which has been used for 9 years. Chief complaint was a mobile mandibular denture. Treatment for the restoration of oral function, including mastication, using mandibular implant-retained overdenture with magnets in total edentulous. Implant supported retained with magnetic attachment constitute an accurate and predictable treatment option and achieve a higher patients satisfaction.Results: The surface of both magnet and attachment keeper were coated with titanium nitride (TiN). Self-curing resin was used for luting between magnets and denture base resin.Conclusion: Magnetic attachments can be used to retain mandibular implant overdenture.Key words: Implant supported overdenture with magnets, resorbed alveolar ridge, total edentulous