• Title/Summary/Keyword: Ear prosthesis

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A Study on the Development of a Human Middle Ear Implant (인체 중이 임플란트 개발에 관한 연구)

  • Yoo, Seung-Hyun;Kim, Hak-Kyun;Kim, Jong-Bum;Song, Joon-Ho;Oh, Dae-Jin
    • Korean Journal of Computational Design and Engineering
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    • v.14 no.2
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    • pp.87-95
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    • 2009
  • This paper describes the design of the ossicular replacement prosthesis for the people who have problem of hearing because of middle ear disease. Also the simulation results of the designed product for verification by finite element analysis software (ABAQUS) are presented. New model is applied to middle ear FE analysis which was generated in previous study. The full replacements of ossicular prosthesis for ossicles (malleus, incus and stapes) are made of Hydroxyapatite and Titanium. Although other existing prosthesis models consider only sound amplification effect, current type has damper system which is operating on the audible frequencies. High frequency sound transmitted to inner ear can be reduced and the prosthesis and inner ear can be prevented from damage.

Prosthodontic rehabilitation of a patient with bilateral auricular deformity

  • Mantri, Sneha Shivkumar;Thombre, Ram U.;Pallavi, Daigavane
    • The Journal of Advanced Prosthodontics
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    • v.3 no.2
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    • pp.101-105
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    • 2011
  • Maxillofacial prosthodontics is an art and science which provides life like appearance to the person with facial deformity. Maxillofacial prosthetic rehabilitation for acquired defects has become more complex and sophisticated with advancement in techniques and materials. This case report describes the clinical and laboratory procedure for fabricating an auricular prosthesis for a patient with trauma related bilateral auricular deformity. Ear prosthesis was fabricated in two parts taking retention from external auditory canal.

RECONSTRUCTION OF EXTERNAL EAR WITH BONE-ANCHORED AURICULAR PROSTHESIS : A CASE REPORT AND LITERATURE REVIEW (골 부착형 악안면 보철물을 이용한 외이의 재건:증례보고 및 문헌고찰)

  • Kim, Hak-Kyun;Kim, Eun-Seok
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.26 no.1
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    • pp.93-96
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    • 2000
  • Bone-anchored auricular prosthesis have been proved that was another apporach to the treatment of the defective external ear. A 19years old woman with hemifacial microsomia was treated with osseointegrated implants for the support of craniofacial prosthesis. 3 implants were placed in temporal region and craniofacial prosthesis was retained with telescopic magnet retention system. The literatures and surgical technique are reviewed and our experience is presented.

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A COMPARATIVE STUDY ON THE SEVERAL FACIAL MEASUREMENT METHOD FOR VERTICAL DIMENSION (수직고경 설정을 위한 안면 계측방법에 관한 비교 연구)

  • Park, Jong-Hwan;Oh, Sang-Chun;Dong, Jin-Keun
    • The Journal of Korean Academy of Prosthodontics
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    • v.33 no.1
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    • pp.75-84
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    • 1995
  • This study was designed as a reference of vertical dimension in prosthetic treatment. The author analyzed six facial measurements, namely, (1) the height of lower face at maximum intercuspal position, (2) the height of lower face at resting position, (3) midface, (4) external ear and lateral wall of orbit, (5) interpupillary distance, (6) distance between pupil and mouth in the 100 Won-kwang Univ. Dental collage students(50 : male, 50 : female), who have normal occlusion, no posterior prosthesis, no experience of orthodontic treatment, and no deformity of facial soft tissue and no temporomandibular dysfunction. The results of this study were as follows : 1. The length of midface was shortest and the inter-pupillary distance was longest in both male and female. 2. The length difference with the length of midface and lower face at maximum intercuspal position was 5.64mm in male and 2.23mm in female, so the lower face was longer, 3. The facial measuring component, similar to lower face at maximum intercuspation, was the length of between medial wall of external ear and lateral wall of orbit. It's difference was 1.3mm in male, 1.77mm in female, and the lower face was shorter. 4. The difference of lower facial length in resting position and maximum intercuspation was 2.48mm in male, 2.24mm in female, the length of resting position was therefore longer. 5. The most clost correlation with the height of maximum intercuspal positioning lower face was resting lower face in both groups.

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A Case of Granulomatosis with Polyangiitis with IgG4-Related Disease Expressed by Facial Paralysis and Hearing Loss (안면 마비와 난청으로 진단된 면역글로불린 G4 연관질환 동반 육아종성 다발 혈관염 1예)

  • Kim, Hyung-sik;Doo, Jeon Gang;Yeo, Seung Geun;Kim, Sang Hoon
    • Journal of Clinical Otolaryngology Head and Neck Surgery
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    • v.29 no.2
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    • pp.240-244
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    • 2018
  • Granulomatosis with polyangiitis (GPA) and Immunoglobulin (Ig) $G_4$-related disease ($IgG_4$-RD) are rare diseases and early diagnosis and proper management are imperative to prevent multi-organ damage. The authors present a case of a 60 years old woman who had facial paralysis and hearing loss. Lt intact canal wall tympanomastoidectomy, Lt facial nerve decompression and ossiculoplasty with partial ossicular replacement prosthesis (PORP) was done. During operation, middle ear tissue was biopsied and GPA with $IgG_4$-RD was diagnosed. After methyl prednisolone (MPD) pulse therapy and azathioprine therapy, the severity of paralysis was improved. We present this case because common otologic symptoms like facial palsy and hearing loss could be initial symptoms of rare systemic disease.