A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up
Stainless steel alloys containing 8% to 12% nickel and 17% to 22% chromium are generally used in orthodontic appliances. A major concern has been the performance of alloys in the environment in which they are intended to function in the oral cavity. Biodegradation and metal release increase the risk...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Case Reports in Dentistry |
| Online Access: | http://dx.doi.org/10.1155/2017/1583403 |
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| author | Maen Zreaqat Rozita Hassan Abdul Fatah Hanoun |
| author_facet | Maen Zreaqat Rozita Hassan Abdul Fatah Hanoun |
| author_sort | Maen Zreaqat |
| collection | DOAJ |
| description | Stainless steel alloys containing 8% to 12% nickel and 17% to 22% chromium are generally used in orthodontic appliances. A major concern has been the performance of alloys in the environment in which they are intended to function in the oral cavity. Biodegradation and metal release increase the risk of hypersensitivity and cytotoxicity. This case report describes for the first time a CAD/CAM zirconium bar as a bonded mandibular fixed retainer with 2-year follow-up in a patient who is subjected to long-term treatment with fixed orthodontic appliance and suspected to have metal hypersensitivity as shown by the considerable increase of nickel and chromium concentrations in a sample of patient’s unstimulated saliva. The CAD/CAM design included a 1.8 mm thickness bar on the lingual surface of lower teeth from canine to canine with occlusal rests on mesial side of first premolars. For better retention, a thin layer of feldspathic ceramic was added to the inner surface of the bar and cemented with two dual-cured cement types. The patient’s complaint subsided 6 weeks after cementation. Clinical evaluation appeared to give good functional value where the marginal fit of digitized CAD/CAM design and glazed surface offered an enhanced approach of fixed retention. |
| format | Article |
| id | doaj-art-bf7184e42aee4f0dae95e18e144ba100 |
| institution | DOAJ |
| issn | 2090-6447 2090-6455 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Dentistry |
| spelling | doaj-art-bf7184e42aee4f0dae95e18e144ba1002025-08-20T03:22:39ZengWileyCase Reports in Dentistry2090-64472090-64552017-01-01201710.1155/2017/15834031583403A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-UpMaen Zreaqat0Rozita Hassan1Abdul Fatah Hanoun2Orthodontic Department, Universiti Sains Malaysia, 15160 Kubang Kerian, Kelantan, MalaysiaOrthodontic Department, Universiti Sains Malaysia, 15160 Kubang Kerian, Kelantan, MalaysiaOrthodontic Department, Universiti Sains Malaysia, 15160 Kubang Kerian, Kelantan, MalaysiaStainless steel alloys containing 8% to 12% nickel and 17% to 22% chromium are generally used in orthodontic appliances. A major concern has been the performance of alloys in the environment in which they are intended to function in the oral cavity. Biodegradation and metal release increase the risk of hypersensitivity and cytotoxicity. This case report describes for the first time a CAD/CAM zirconium bar as a bonded mandibular fixed retainer with 2-year follow-up in a patient who is subjected to long-term treatment with fixed orthodontic appliance and suspected to have metal hypersensitivity as shown by the considerable increase of nickel and chromium concentrations in a sample of patient’s unstimulated saliva. The CAD/CAM design included a 1.8 mm thickness bar on the lingual surface of lower teeth from canine to canine with occlusal rests on mesial side of first premolars. For better retention, a thin layer of feldspathic ceramic was added to the inner surface of the bar and cemented with two dual-cured cement types. The patient’s complaint subsided 6 weeks after cementation. Clinical evaluation appeared to give good functional value where the marginal fit of digitized CAD/CAM design and glazed surface offered an enhanced approach of fixed retention.http://dx.doi.org/10.1155/2017/1583403 |
| spellingShingle | Maen Zreaqat Rozita Hassan Abdul Fatah Hanoun A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up Case Reports in Dentistry |
| title | A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up |
| title_full | A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up |
| title_fullStr | A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up |
| title_full_unstemmed | A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up |
| title_short | A CAD/CAM Zirconium Bar as a Bonded Mandibular Fixed Retainer: A Novel Approach with Two-Year Follow-Up |
| title_sort | cad cam zirconium bar as a bonded mandibular fixed retainer a novel approach with two year follow up |
| url | http://dx.doi.org/10.1155/2017/1583403 |
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