Aluminiumoxid-Keramik, ein bioinertes Material f�r die Mittelohrchirurgie

Jahnke, K.; Plester, D; Heimke, G.

doi:10.1007/bf01109587

Cited by 42 publications

(18 citation statements)

References 5 publications

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“…Dislocation of CORP in the tympanic cavity was found in 3 each of the CORP-P implanted ears (3.4%) and CORP-T-implanted ears (4%) (table IV). (table V) This was noted in a total of 8 cases: expo sure in 3 ears (patients 6-8) and extrusion in 5 ears (patients [1][2][3][4][5]. In all of these ears, extended cholesteatoma was found, with the eustachian tube being affected to some de gree.…”

Section: Postoperative Resultsmentioning

confidence: 99%

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Ossiculoplasty Failure with Ceramic Ossicular Replacement Prosthesis (With 1 color plate)

Yamamoto¹,

Iwanaga²

1986

ORL

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The stability of ceramic ossicular replacement prosthesis (CORP) in the middle ear was evaluated in 162 ears that had been followed for more than 18 months. The CORP extruded from 8 ears (4.9%) and was dislocated in 6 ears (3.7%). These failures were considered to be due mainly to postoperative tubal dysfunction and disease recurrence. CORP should not be used when such conditions can be anticipated.

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Section: Postoperative Resultsmentioning

confidence: 99%

“…Jahnke and Plester [1][2][3][4][5][6] first reported the use of aluminum oxide ceramic implants for ossicular reconstruction with satisfactory results. We also designed new types of colu mella materials made from aluminum oxide ceramics designated ceramic ossicular re placement prosthesis (CORP).…”

Section: Introductionmentioning

confidence: 99%

Ossiculoplasty Failure with Ceramic Ossicular Replacement Prosthesis (With 1 color plate)

Yamamoto¹,

Iwanaga²

1986

ORL

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“…These experimental studies underline the suitability and biocompatibility of Al 2 O 3 as biomaterial for ossicular replacement and reconstruction and go along with clinical experiences of the material which was introduced to otosurgery by Jahnke and coworkers in 1979 [11]: Extrusions are less than 3 % after 4 years of implantion and mainly occur in severely diseased middle ears. Hearing results show air-bone-gaps below 30 dB (so called social hearing level) in more than 90 % of cases both for TORP and PORP [2].…”

Section: Aluminum Oxidementioning

confidence: 95%

Biomaterials for ossicular chain reconstruction. A review

Neumann

Jahnke

2003

Materialwissenschaft Werkst

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This review gives a survey of biomaterials used for ossicular chain reconstruction. The survey is focussed on application, biophysical requirements, properties and goals for future developments. The implantation site middle ear differs from others due to aeration and potential bacterial colonization. As a consequence, implant materials must exhibit excellent biocompatibility, biostabilty and sound conducting properties. In vitro and in vivo biocompatibility investigations and clinical observations determine the choice of material. Additionally the implants must provide the possibilty of intraoperative shaping or should be available in different variations in order to allow reconstruction appropriate to the individual conditions. Ceramics, metals and plastics are materials in current use. Based on thorough experimental and long term clinical experiences, the bioinert aluminum oxide is favorable amoung the ceramics. Bioactive ceramics may have minor biostability and the risk of fixation to surrounding bone which impairs sound conduction. This is also true for hydroxyapatite although biodegradation occurs only rarely. Today, titanium is the metal best established in middle ear implantation, reflected by excellent biocompatibility in vitro and in vivo, and good clinical results. Titanium is preferred by many surgeons, considering that sound transmission properties are mainly dependent on the implant weight. In stapes surgery, when the implant has direct contact to inner fluids, gold was accused to cause granuloma formation with subsequent inner ear damage in selected cases. In frequent past and present use, plastics (porous polyethylene and teflon) have proven to be of limited value in ossicular chain replacement because of high extrusion rates and the observation of material desintegration and bacterial colonization. In order to individually manage the pathological conditions in the middle ear, the implant design is of crucial importance. It is dependent on the ossicle to be replaced and the implant material. Future investigations have to minimize implant extrusions possibly by modifying and improving implant surfaces.

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“…The biocompatibility of Si 3 N 4 has been proven in many studies [6], [41], [75], [88], [114], [115]. So far, experiences with ossicular prostheses made from Al 2 O 3 have shown that ceramic materials have good biocompatibility and mechanical strength even when gaining contact to respiratory mucosa [79], [125]. A ceramic osteosynthesis prototype [117] in the minipig model showed satisfactory intraoperative handling, reliable stabilisation of the fracture gap and good healing attributes for osteosynthesis of the anterior wall of the frontal sinus.…”

Section: Osteosynthesismentioning

confidence: 99%

Biomaterials for craniofacial reconstruction

Neumann

2009

GMS Current Topics in Otorhinolaryngology - Head and Neck Surgery; 8:Doc08; ISSN 1865-1011

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Aluminiumoxid-Keramik, ein bioinertes Material f�r die Mittelohrchirurgie

Cited by 42 publications

References 5 publications

Ossiculoplasty Failure with Ceramic Ossicular Replacement Prosthesis (With 1 color plate)

Ossiculoplasty Failure with Ceramic Ossicular Replacement Prosthesis (With 1 color plate)

Biomaterials for ossicular chain reconstruction. A review

Biomaterials for craniofacial reconstruction

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