자가 치아 이식술에 사용되는 Computer Aided Rapid Prototyping model(CARP model)의 실제 치아에 대한 오차
이성재, 김의성, 김기덕, 이승종,
소속 상세정보
이성재 ( Lee Seong-Jae ) - 일산예치과
김의성 ( Kim Eui-Seong ) - 연세대학교 치과대학 보존과학교실
김기덕 ( Kim Kee-Deog ) - 연세대학교 치과대학 구강악안면방사선학교실
이승종 ( Lee Seung-Jong ) - 연세대학교 치과대학 보존학교실
KMID : 0362720060440020115
Abstract
Objective : The purpose of this study was to evaluate the dimensional errors between real tooth, 3D CT image and CARP model.
Materials and Methods : Two maxilla and two mandible block bones with intact teeth were taken from two cadavers. Computed tomography was taken either in dry state and in wet state. After then, all teeth were extracted and the dimensions of the real teeth were measured using a digital caliper at mesio-distal and bucco-lingual width both in crown and cervical portion. 3D CT image was generated using the V-works 4.0TM (Cybermed Inc., Seoul, Korea) software. Twelve teeth were randomly selected for CARP model fabrication. All the measurements of 3D CT images and CARP models were made in the same manner of the real tooth group. Dimensional errors between real tooth, 3D CT image model and CARP model was calculated.
Results : 1) Average of absolute error was 0.199 mm between real teeth and 3D CT image model, 0.169 mm between 3D CT image model and CARP model and 0.291 mm between real teeth and CARP model , respectively. 2) Average size of 3D CT image was smaller than real teeth by 0.149 mm and that of CARP model was smaller than 3D CT image model by 0.067mm.
Conclusion : Within the scope of this study, CARP model with the 0.291 mm average of absolute error can aid to enhance the success rate of autogenous tooth transplantation due to the increased accuracy of recipient bone and donor tooth.
키워드
Absolute error;Autotransplantation;Donor tooth;Rapid prototyping;Recipient bone site preparation;3D CT image model
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