Sectional prostheses connected by samarium-cobalt magnets

Sasaki, Hidetada; Kinouchi, Yohsuke; Tsutsui, Hideo; Yoshida, Yukiko; Karv, M.; Ushita, Tomiyuki

doi:10.1016/0022-3913(84)90345-7

Cited by 21 publications

(8 citation statements)

References 10 publications

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“…This led to considerable loss of weight of acrylic framework and also there is no need to fabricate the whole prosthesis again in case of discoloration or damage of the silicone layer as the outer silicone layer can be removed and repacked with the new silicon on the acrylic resin framework if the mold is preserved The resin framework obtained was trimmed, finished, and was then adjusted clinically with the aid of pressure indicating paste to allow complete seating on the face. Facial moulage was then made again to pick up the resin framework in alginate impression material (so as to allow maximum adaptation of prosthesis to tissues for retention and to restore facial features in correct alignment during sculpting in wax and later on in final silicone prosthesis) and was poured to obtain a new working model [Figure 3a and b ] The three Cobalt-Samarium magnets, 2.5 mm in thickness (Jobmasters, Randallstown, MD, USA)[ 6 ] were embedded in acrylic framework [ Figure 4 ]. The counter magnets and modified stock eye prosthesis were then securely positioned with wax on resin framework.…”

Section: Case Reportmentioning

confidence: 99%

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Prosthetic rehabilitation of large mid-facial defect with magnet-retained silicone prosthesis

Shrivastava

Agarwal

et al. 2015

J Indian Prosthodont Soc

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Rehabilitation of maxillofacial defect patients is a challenging task. The most common prosthetic treatment problem with such patients is, getting adequate retention, stability, and support. In cases of large maxillofacial defect, movement of the prosthesis is inevitable. The primary objectives in rehabilitating the maxillofacial defect patients are to restore the function of mastication, deglutition, speech, and to achieve normal orofacial appearance. This clinical report describes maxillofacial prosthetic rehabilitation of large midfacial defect including orbit along with its contents, zygoma and soft tissues including half of the nose, cheeks, upper lip of left side, accompanying postsurgical microstomia and orofacial communication, which resulted from severe fungal infection mucormycosis. The defect in this case was restored with magnet retained two piece maxillofacial prosthesis having hollow acrylic resin framework and an overlying silicone facial prosthesis. The retention of prosthesis was further enhanced with the use of spectacles. This type of combination prosthesis enhanced the cosmesis and functional acceptability of prosthesis.

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Section: Case Reportmentioning

confidence: 99%

“…The three Cobalt-Samarium magnets, 2.5 mm in thickness (Jobmasters, Randallstown, MD, USA)[ 6 ] were embedded in acrylic framework [ Figure 4 ]. The counter magnets and modified stock eye prosthesis were then securely positioned with wax on resin framework.…”

Section: Case Reportmentioning

confidence: 99%

Prosthetic rehabilitation of large mid-facial defect with magnet-retained silicone prosthesis

Shrivastava

Agarwal

et al. 2015

J Indian Prosthodont Soc

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“…[7] The use of magnets is one of the most efficient means of providing sectional prosthesis with adequate retention and stability in patients with deformities requiring complex rehabilitations. [8,9] Magnets are attached to each section, when the sections are assembled properly; the magnets are attracted to each other and retain the sections. [9] The aim of this article is to describe the prosthetic treatment for a head and neck cancer patient with a segmental mandibular and facial defect and the contribution of this prosthesis in improving the patients QOL.…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation of a mandibular segmental defect with magnet retained maxillofacial prosthesis

Mantri¹,

Mantri

Rathod³

et al. 2013

Indian J Cancer

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Resection or loss of a portion of the mandible can result in a variety of functional, cosmetic and psychological deficits that are dependent on the extent of the defect, the concomitant therapy and the timing of rehabilitative efforts. These impairments greatly affect the patient's Quality of life (QOL). The thrust in cancer care is not simply on survival but on rehabilitation, which aims to improve multiple impairments and QOL. This article describes a case of a 58-year-old female with segmental resection of the anterior mandible, extending to lower lip, resulting in a large intraoral as well extra oral defect. Prosthodontics rehabilitation was done using a two-piece intra oral and extra oral prosthesis oriented to each other using magnets. Use of magnets for retaining the extra oral prosthesis simplifies the clinical and laboratory phase enhancing patient's comfort and psychological morale.

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“…In edentulous patients with maxillectomy defects, effective retention, support and stability of an obturator prosthesis must be obtained from residual palatal structures and by engaging suitable undercuts within the defect. A sectional magnetically retained, hollow obturator prosthesis is beneficial to patients to permit easy insertion and removal and to minimize weight ( Sasaki et al ., 1984 ; Mitchell, Gary & Khan, 1989; Devlin & Barker, 1992). The obturator portion is made of resilient silicone material that appropriately engages undercuts within the defects which can not be utilized by a rigid obturator, thus providing retention, support and stability of the prosthesis ( Beumer, Curtis & Firtell, 1979; Finlay, 1994).…”

Section: Introductionmentioning

confidence: 99%

Sectional prosthesis with hollow obturator portion made of thin silicone layer over resin frame

Kanazawa¹,

Yoshida²,

Shimodaira³

2000

J of Oral Rehabilitation

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Magnetically retained sectional obturator prostheses, consisting of a hollow obturator portion made of thin silicone layer over a resin frame and a denture portion, were fabricated to alleviate some of the limitations of silicone materials, and applied to two edentulous patients with maxillectomy defects. The silicone obturator allowed profound engagement of undercuts within the defect, resulting in adequate retention, support and stability of the prostheses for over 3 years. The patients have achieved improvement in speech and mastication without complications, by use of the obturator prostheses.

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Sectional prostheses connected by samarium-cobalt magnets

Cited by 21 publications

References 10 publications

Prosthetic rehabilitation of large mid-facial defect with magnet-retained silicone prosthesis

Prosthetic rehabilitation of large mid-facial defect with magnet-retained silicone prosthesis

Rehabilitation of a mandibular segmental defect with magnet retained maxillofacial prosthesis

Sectional prosthesis with hollow obturator portion made of thin silicone layer over resin frame

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