근관충전용 실러의 물리적 성질에 관한 연구
A study on the physical properties of root canal sealers
최인, 홍정표,
소속 상세정보
최인 ( ) - 경희대학교
홍정표 ( ) - 경희대학교
KMID : 0362319950200010142
Abstract
The purpose of this study was to compare and estimate the physical properties of five root caal sealers classified Calciobiotic root canals sealer as calcium hydroxide based sealer, Apatite root sealer type II as calcium phosphate based sealer,
AH-26
as resin based sealer, Canals and Pulpdent root canals sealer as zinc oxide eugenol based sealer.
The author investigated dimensional change and flow rate of cnaal sealers, diametral tensile strength and shear bond strength of sealers to dentin to evaluate the physical properties on affect of complete obturation of root canal ad performed the
total
100 specimens of each 25 sealers under the condition of root temperature according to manufacturer's instructions. All specimens were stored at 37±1℃ in 100% relative humidity.
A microscope for measurement of micro distance is used for the dimensional change test and evacuation methods using vaccum were used for the flow rate test. The result differed by the storage time measured on the tests of diametral tensile
strength
and
shear bond strength to dentin.
@ES The following results were obtained ;
@EN 1. On the test of dimensional change, Canals and Pulpdent expanded slightly, AH-26 and Apatite showed the severe shrinkage after 48 hours.
2. AH-26 and Apatite were the excellent with each 24.59mm, 31.19mm after 3 minutes in the aspect of flow property.
3. On the diametral tensile strength, Calciobiotic root canals sealer showed the highest strength with 27.13kg/cm?after 48 hours, Apatite root sealer type II showed highest strength with 84.57kg/cm?after 120 hours.
4. On the shear bond strength to dentin, AH-26 was most excellent with 55.37kgf/cm?after 24 hours and with 134.71kgf/cm?after 120 hours.
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