[논문]Characteristics according to the Amount of HAp Added in Resin for Tooth Repair

Hwang, Sungu; Lim, Jinhyuck; Ryu, Suchak

doi:10.4191/kcers.2019.56.6.02

[국내논문] Characteristics according to the Amount of HAp Added in Resin for Tooth Repair 원문보기

한국세라믹학회지 = Journal of the Korean Ceramic Society, v.56 no.6, 2019년, pp.521 - 525

Hwang, Sungu (Department of Nanomechatronics Engineering, Pusan National University) , Lim, Jinhyuck (Department of Nanomechatronics Engineering, Pusan National University) , Ryu, Suchak (Department of Nanomechatronics Engineering, Pusan National University)

Abstract ▼ AI-Helper

A study was conducted to investigate the possibility of a composite material containing a composite resin as a matrix and hydroxyapatite (HAp) powder as a substitute material for tooth repair. As the content of HAp increased, hardness value (111.9 HV at 9%) increased and flexural strength (73.3 MPa at 9%) decreased. Observation of the microstructure after immersion in a simulated body fluid (SBF) solution confirmed a dense structure due to mutual coagulation and curing. It was thought that fine HAp recrystals were formed with the lapse of time, and they were entangled to form a condensation structure and had a dense structure. In addition, since the activity was shown by the ion migration on the surface of a tooth, it was highly likely that a biocompatible bond occurred during tooth contact. Therefore, it could be used as a substitute material for tooth repair.

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가설 설정

1. The results of the Vickers hardness test showed that hardness increased with increasing HAp contents. It was found that the addition of HAp increased the abrasion resistance of the resin composite surface.
3. Observation of the microstructure showed that dissolved HAp was filling the pores. It was believed to have been deposited on the tooth surface by recrystallization and entangled to form a condensation structure and have a dense structure.

제안 방법

In this study, Vickers hardness and strength were measured to investigate the material properties after mixing HAp powder with the composite resin as a substrate and after immersion in the SBF solution.

대상 데이터

On the glass, frames were made with rubber tape with lengths of 3 cm, widths of 1 cm, and heights of 2 mm each. The mixture of 0.
27. A Universal Testing Machine (SM Tester, SME-001- 05T, Korea) was used, and the distance between the specimen supports was 18 mm. The three-point bending strength (δ, MPa) was calculated as follows.

성능/효과

1. The results of the bending strength test showed that the specimens with 0 wt% HAp and 1 wt% HAp showed the highest average values (117.3 MPa), and the specimens with 9 wt% HAp content showed the lowest average values (73.3 MPa). In the case of the specimens with 0 wt% HAp and 1 wt% HAp content, the bending strength was the same (117.
2. The results showed that the HV increased as the content of the HAp increased, compared to a standard specimen containing 0 wt% HAp. The specimens with 0 wt% HAp had the lowest value (83.
9 HV). The HV of the specimens with a content of 1 wt% HAp and 5 wt% HAp were not significantly changed, but the HV of the specimens with more than 5 wt% HAp content significantly increased. Therefore, it was found that the hardness increased with an increasing HAp content.
2. As a result of the bending strength measurement, the strength decreased as the HAp content was increased over 1 wt%. In this case, the optimum bending strength was 80 MPa as recommended by the ISO.

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원문보기 상세보기
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원문보기 상세보기
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원문보기 상세보기
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원문보기 상세보기
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원문보기 상세보기
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원문보기 상세보기
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상세보기
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