KR20180078624A - 돼지 진피-유래 치과용 차폐막 및 이의 제조방법 - Google Patents
돼지 진피-유래 치과용 차폐막 및 이의 제조방법 Download PDFInfo
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- KR20180078624A KR20180078624A KR1020160183576A KR20160183576A KR20180078624A KR 20180078624 A KR20180078624 A KR 20180078624A KR 1020160183576 A KR1020160183576 A KR 1020160183576A KR 20160183576 A KR20160183576 A KR 20160183576A KR 20180078624 A KR20180078624 A KR 20180078624A
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- Prior art keywords
- membrane
- collagen
- frame member
- crosslinking
- dental
- Prior art date
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Images
Classifications
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- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0003—Not used, see subgroups
- A61C8/0004—Consolidating natural teeth
- A61C8/0006—Periodontal tissue or bone regeneration
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2/2846—Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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Abstract
Description
도 2는 본 개시 내용의 다른 구체예에 따라 차폐막을 제조하는 일련의 공정을 예시적으로 도시하는 공정 순서도이고;
도 3은 실시예 1에서 돼지 진피층을 탈핵산 용액으로 처리하기 전후의 핵산성분의 함량을 평가하기 위하여 H&E 염색 조직 슬라이스를 제조하여 광학 현미경(40배 및 100배)으로 관찰한 결과를 나타내는 사진이고;
도 4는 실시예 1에서 2단계 감압 필터링(적층)을 거쳐 동결 건조된 멤브레인 형상의 복합 구조물 중 멤브레인 부재의 단면에 대한 주사전자현미경 사진이고;
도 5는 실시예 1에 따라 제조된 차폐막의 멤브레인 부재에 대한 세포독성 평가 결과를 나타내는 광학 현미경 사진이고;
도 6은 실시예 1에 따라 제조된 차폐막의 멤브레인 부재 및 상용 멤브레인 제품 간의 흡수도를 대비한 결과를 나타내는 그래프이고; 그리고
도 7a 및 도 7b 각각은 실시예 1에 따라 제조된 차폐막의 멤브레인 부재 및 상용 멤브레인 제품 간의 기계적 물성(인장강도 및 인장신장율)을 대비한 결과를 나타내는 그래프이다.
시료 번호 | 시료중량 (g) | 시료 중량 합계 (g) |
플라스크 중량 (g) |
측정 후 플라스크 중량 (g) | 조지방 함량 (%) |
1 | 0.0905 | 0.2465 | 3회 측정 평균 135.8132g |
4회 측정 135.8167g |
0.002% |
2 | 0.0729 | ||||
3 | 0.0831 | ||||
4 | 0.0623 | 0.2662 | 3회 측정 평균 129.4189g |
4회 측정 평균 129.4209g |
0.001% |
5 | 0.0916 | ||||
6 | 0.1123 |
시험 방법 | 실시예 1 | 비교예 1 내지 5 | ||||||
시편 정보 |
가교방법 | 2단 가교 (DHT/EDC) |
화학가교 (EDC/NHS) |
열처리 가교 | 비가교 | 비가교 | ||
분해기간 | 6개월 이상 | 6개월 이상 | 3~5개월 | 3~4개월 | 3~5개월 | |||
No. | 시험 평가 항목 | 원자재 | 돈피 | 소 힘줄 | 돈피 | 소 심막 | ||
1 | 두께 (mm) | - | 0.50 | 0.45 | 0.24 | 0.48 | - | 0.45 |
2 | 밀도 (g/cm3) | - | 0.51 | 0.34 | 0.66 | 0.08 | - | 0.26 |
3 | 흡수도 (%) | ISO 13726-1 | 165.1 | 169 | 567 | 1689.04 | - | - |
4 | 효소분해저항성 (%) (Collagenase 50U, 8h) |
ASTM F2212 | 82.73 (10h) 67.79 (8h) |
43.05 (10h) | 8.00 (8h) | - | 0.00 (8h) | 6.00 (8h) |
5 | 인장강도 (MPa) | ASTM D638 | 5.63 | 3.27 | 4.69 | 0.74 | - | - |
6 | 인장신장율 (%) | 33.12 | 14.4 | 14.8 | 14.1 | - | - |
Claims (22)
- 소정 패턴 형상을 갖도록 구성된 흡수성 또는 비흡수성 프레임 부재;
상기 프레임 부재의 상측 면 및 하측 면에 밀착하면서 둘러싸는 멤브레인 부재;
를 포함하는 치과용 차폐막으로서,
상기 멤브레인 부재는 판상형의 복수 콜라겐 층의 적층 구조를 갖고, 하기의 물성을 충족하는 치과용 차폐막:
(i) 적어도 0.4 g/㎤의 밀도,
(ii) ISO 13726-1에 따라 측정되는 흡수도가 100 내지 2,000%,
(iii) ASTM F2212에 따라 측정되는 효소분해저항성(8h)이 40 내지 80%, 그리고
(iv) ASTM D638에 따라 측정되는 인장강도 및 인장신장율 각각이 적어도 0.5 MPa 및 적어도 5%임. - 제1항에 있어서, 상기 복수 콜라겐 층은 가교된 콜라겐 구조를 갖는 것을 특징으로 하는 치과용 차폐막.
- 제1항에 있어서, 상기 차폐막은 프레임 부재의 벤딩에 의한 3차원적 구조에 의하여 골재생 공간을 형성하는 것을 특징으로 하는 치과용 차폐막.
- 제1항에 있어서, 상기 차폐막은 2차원적 구조에 의하여 골재생 공간을 형성하는 것을 특징으로 하는 치과용 차폐막.
- 제1항에 있어서, 상기 프레임 부재는 티타늄 또는 티타늄 합금 재질인 것을 특징으로 하는 치과용 차폐막.
- 제1항에 있어서, 상기 프레임 부재는 결손된 치조골의 상부에 위치하게 되는 환형부 및 상기 결손된 치조골의 측부 또는 그 일부가 상부에 위치하는 다리부를 구비하는 것을 특징으로 하는 치과용 차폐막.
- 제1항에 있어서, 상기 판상형의 복수 콜라겐 층 각각의 두께는 1 내지 50 ㎛ 범위인 것을 특징으로 하는 치과용 차폐막.
- 제2항에 있어서, 상기 가교 구조를 갖는 복수 콜라겐 층의 총 아미노산 조성 중 히드록시프롤린(hydroxyproline) 내 히드록시기(-OH)의 량이 가교되지 않은 경우에 비하여 90% 이하인 것을 특징으로 하는 치과용 차폐막.
- 제1항 또는 제2항에 있어서, 상기 차폐막의 두께는 0.4 내지 1.5 mm 범위인 것을 특징으로 하는 치과용 차폐막.
- (I) 돼지 진피로부터 유래된 콜라겐-함유 진피층을 물과 함께 분쇄 처리하는 단계;
(II) 상기 진피층 분쇄물을 감압 필터링에 의하여 성형하여 제1 멤브레인 구조물을 형성하는 단계;
(III) 상기 제1 멤브레인 구조물 상에 소정 패턴 형상을 갖도록 구성된 흡수성 또는 비흡수성 프레임 부재를 부착하는 단계;
(IV) 상기 프레임 부재가 부착된 제1 멤브레인 구조물 상에 상기 단계 (I)에서 얻어진 진피층 분쇄물을 첨가하고 감압필터링에 의하여 형성되는 제2 멤브레인 구조물이 상기 제1 멤브레인 구조물과 함께 상기 프레임 부재를 밀착하면서 둘러싸는 복합 구조물을 형성하는 단계;
(V) 상기 복합 구조물에 대하여 물리적 가교 및 화학적 가교로 이루어지는 2중 가교를 수행하는 단계;
를 포함하고,
상기 제1 및 제2 멤브레인 구조물 각각은 판상형의 복수 콜라겐 층의 적층 구조를 갖는 치과용 차폐막의 제조방법. - 제10항에 있어서, 상기 단계 (IV)와 상기 단계 (V) 사이에 상기 복합 구조물을 동결 건조하는 단계를 더 포함하는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항 또는 제11항에 있어서, 상기 단계 (I)에 앞서 돈피를 탈지질 처리하여 돼지 진피를 얻는 단계; 및
상기 돼지 진피를 탈핵산화 처리하는 단계;
를 더 포함하는 것을 특징으로 하는 치과용 차폐막의 제조방법. - 제12항에 있어서, 상기 탈핵산화 처리된 돼지 진피를 동결 건조시킨 다음, 상기 단계 (I)을 수행하는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항 또는 제11항에 있어서, 상기 진피층 분쇄물의 입자 사이즈는 0.7 내지 2 ㎛ 범위인 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항에 있어서, 상기 단계 (I)에서 물의 량은 상기 진피층 100 중량부에 대하여 500 내지 1000 중량부 범위인 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항 또는 제11항에 있어서, 상기 감압 필터링을 위하여 가해지는 압력은 600 Torr 이하인 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제11항에 있어서, 상기 복합 구조물을 동결 건조하는 단계는 -90 내지 -50℃ 범위의 온도 및 600 Torr 이하의 압력 조건 하에서 수행되는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항 또는 제11항에 있어서, 상기 물리적 가교는 열처리 가교로서 80 내지 130℃ 및 감압 조건 하에서 12 내지 30 시간 동안 수행되는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제18항에 있어서, 상기 열처리 가교 반응에 의하여 가교도가 5 내지 30%로 증가하는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항 또는 제11항에 있어서, 상기 화학적 가교는 카르보디이미드 화합물을 사용하여 수행되는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제20항에 있어서, 항기 화학적 가교 반응에 의하여 가교도가 90%까지 증가하는 것을 특징으로 하는 치과용 차폐막의 제조방법.
- 제10항에 있어서, 상기 제1 및 제2 멤브레인 구조물 각각은 하기의 물성을 갖는 것을 특징으로 하는 치과용 차폐막의 제조방법:
(i) 적어도 0.4 g/㎤의 밀도,
(ii) ISO 13726-1에 따라 측정되는 흡수도가 100 내지 2,000%,
(iii) ASTM F2212에 따라 측정되는 효소분해저항성(8h)이 40 내지 80%, 그리고
(iv) ASTM D638에 따라 측정되는 인장강도 및 인장신장율 각각이 적어도 0.5 MPa 및 적어도 5%임.
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US20130288199A1 (en) * | 2012-04-27 | 2013-10-31 | Shih-Cheng Wen | Composite regeneration membrane |
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KR20150098889A (ko) * | 2014-02-21 | 2015-08-31 | 주식회사 네오바이오텍 | 치과용 혼합 차폐막 |
KR20160069949A (ko) * | 2014-12-09 | 2016-06-17 | 오스템임플란트 주식회사 | 치주 재생용 멤브레인 및 이의 제조방법 |
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