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대한치과교정학회지 = The Korean journal of orthodontics v.39 no.4, 2009년, pp.225 - 233   피인용횟수: 2

수 종의 도재 수복물에 부착된 세라믹 브라켓의 전단접착강도와 파절양상에 열순환이 미치는 영향
Effect of thermocycling on shear bond strength and mode of failure of ceramic orthodontic brackets bonded to different porcelain restorations

강상욱   (부산대학교 치의학전문대학원 치과교정학교실  ); 손우성   (부산대학교 치의학전문대학원 치과교정학교실  ); 박수병   (부산대학교 치의학전문대학원 치과교정학교실  ); 김성식   (부산대학교 치의학전문대학원 치과교정학교실  );
  • 초록

    본 연구는 도재 수복물에 부착된 단결정 세라믹 브라켓의 전단접착강도와 파절양상에 열순환과 도재 수복물의 종류가 어떤 영향을 미치는지 알아보기 위해 시행되었다. 도재전장관에 사용되는 재료들 중 Ceramco 3, Empress II, Zi-ceram/Vintage ZR 세 가지를 선택하여 각 20개씩 총 60개의 시편을 원반형태(두께 2 mm, 직경 12 mm)로 제작하였다. 동일한 접착 술식으로 세라믹 브라켓을 부착한 후 열순환을 시행한 실험군과 시행하지 않은 대조군, 두 군으로 나누어 전단접착강도와 파절양상을 평가하였다. 열순환을 하지 않은 대조군의 전단접착강도는 Ceramco 3는 $7.06\;{\pm}\;1.76\;MPa$ , Empress II는 $7.55\;{\pm}\;2.38\;MPa$ 그리고 Zi-ceram/Vintage ZR은 $7.19\;{\pm}\;1.38\;MPa$ 로 추천되는 전단접착 강도(6 - 8 MPa)에 적합한 강도를 보였으나 열순환을 시행한 실험군은 전단접착강도가 유의하게 감소하였으며(p $4.88\;{\pm}\;1.00\;MPa$ , Empress II는 $5.46\;{\pm}\;1.35\;MPa$ 그리고 Zi-ceram/Vintage ZR은 $4.84\;{\pm}\;1.01\;MPa$ 로 임상적으로 추천되는 것보다 다소 낮은 값을 보였다. 도재의 종류에 따른 전단접착강도에는 유의한 차이가 없었다. 파절양상은 대조군에서는 모두 브라켓 기저부와 접착제 사이에서 파절이 일어났으며, 실험군에서는 2개의 시편(Ceramco 3과 Zi-ceram/Vintage ZR군에서 각 1개)만이 접착제내 파절을 보였으며 28개의 시편은 브라켓 기저부와 접착제 사이에서 파절이 일어났다. 이상의 연구 결과에서 보았을 때 도재 수복물의 종류에 따른 차이는 없었으나 열순환에 의해 전단접착강도가 약화되므로 실제 임상에서 고려되어야 할 것이다.


    Objective: The purpose of this study was to investigate the effect of thermocycling and type of porcelain restoration on shear bond strength (SBS) and mode of failure of monocrystalline ceramic brackets. Methods: A total of 60 porcelain discs were made and divided into three equal groups as follows: Ceramco 3, IPS Empress II, Zi-ceram/Vintage ZR. ceramic brackets were bonded to the prepared porcelain surfaces in the same manner. Each group was divided randomly into two subgroups: thermocycled group and non-thermocycled group (control). All samples were tested in shear mode on an universal testing machine. Results: SBS of the non-thermocycled group was clinically acceptable (Ceramco 3: $7.06\;{\pm}\;1.76\;MPa$ , IPS Empress II: $7.55\;{\pm}\;2.38\;MPa$ , Zi-ceram/Vintage ZR: $7.19\;{\pm}\;1.38\;MPa$ ). But, SBS of the thermocycled group was significantly reduced (Ceramco 3: $4.88\;{\pm}\;1.00\;MPa$ , IPS Empress II: $5.46\;{\pm}\;1.35\;MPa$ , Zi-ceram/Vintage ZR: $4.84\;{\pm}\;1.01\;MPa$ , p


  • 주제어

    열순환 .   세라믹 브라켓 .   전단접착강도.  

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  • 이 논문을 인용한 문헌 (2)

    1. Lee, Young-Kee ; Cha, Jung-Yul ; Yu, Hyung-Seog ; Hwang, Chung-Ju 2009. "Effect of metal primer and thermocycling on shear bonding strength between the orthodontic bracket and gold alloy" 대한치과교정학회지 = The Korean journal of orthodontics, 39(5): 320~329     
    2. Jeon, Young-Mi ; Son, Woo-Sung ; Kang, Sang-Wook 2010. "Effect of tribochemical silica coating on the shear bond strength of rebonded monocrystalline ceramic brackets" 대한치과교정학회지 = The Korean journal of orthodontics, 40(3): 184~194     

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