압자의 압입에 의한 치관 전장용 복합레진의 기계적 성질 평가 = An Evaluation of Mechanical Properties of Veneering Resin Composites by Indentation Method

다국어 초록 (Multilingual Abstract)

This study was performed to evaluate the mechanical properties of four commercially available veneering resin composites
for crown (Dentacolor: DC, Artglass: AG, Esternia: ET and Targis: TG). According to the manufacturer's instructions, disc
specimens were fabricated in a teflon mold giving 12mm in diameter and 1 mm in thickness. All specimens were immersed
in distilled water at 37℃ for 30 days. An indentation test of 68-degree trigonal diamond pyramid was made under 98.06 mN
load for 15 seconds. Hardness numbers, charateristic indentation depths, flow and permanent deformation were measured and
compared statistically by ANOVA and Tukey's multiple range test.
The results obtained were summarized as follows;
1.The highest hardness value of 87.4 was observed in the ET group and the lowest value of 11.8 was observed in the DC
group. Hadness values showed no sinificant difference between the AG group and TG group, but others showed the
significant difference beween groups (p<0.5).
2.Flow value of the ET group was significantly lower than those of the AG and TG groups of hybrid composite for crowns.
3.Percent strain during the indentation was the lowest in the DC group and the highest in the AG group, but there was no
significant difference in each experimental group (p>0.05).
4.The relationship between the hardness number and flow during the indentation was a negative linear on a logarithmic scale.

목차 (Table of Contents)

• 서론
• 재료 및 방법
• 1.연구재료
• 2.연구방법
• 결과
• 고찰
• 결론