상아질 접착제의 전단결합강도와 미세누출에 관한 연구
A STUDY ON THE SHEAR BOND STRENGTHS AND MICROLEAKAGES OF THREE BONDING AGENTS ON DENTIN
소속 상세정보
김정호/Jeong Ho Kim
조영곤/문주훈/Young Gon Cho/Joo Hoon Moon
KMID : 0362319970220020680
Abstract
New bonding agent systems have been supplied which operators can simply apply to
conditioned tooth surfaces. The purpose of this study was to evaluate the shear bond
strengths and the microleakages of three bonding agents and composite resins to dentin.
Seventy-five extracted human maxillary and mandibular molar teeth were used in this
study. For the shear bond strength test, the entire occlusal dentin surfaces of thirty
teeth were exposed with Diamond Wheel Saw and smoothed with Lapping and Polishing
Machine (South Bay Technology Co., U.S.A.).
For the microleakage test, Class V cavities were prepared in the buccal surfaces of
forty-five teeth. They were randomly assigned into 3 groups according to dentin
bonding agents (ScotchbondTM Multi-Purpose plus,
ONE-STEPTM and Prime & BondTM) and composite resins
(Z-100, AelitefilTM and TPH SpectrumTM) to be used.
Bonding agents and composite resins were bonded to exposed dentin surfaces of the
tooth crown and to Class V cavities on the buccal surfaces respectively according to
manufacturer's directions.
The shear bond strengths were measured by universal testing
machine(UTM AGS-100, Japan). In addition, the degree of microleakage at
the occlusal and gingival margin was examined by 2% methylene blue and
stereomicroscope(Olymous SZH 10, Japan).
The results were as follows : 1. The shear bond strength to dentin was the highest
value in SBMP-Plus group(16.68±7.38 MPa) and the lowest value in Prime & Bond
group(11.61±5.82 MPa), but there was no significant difference of shear bond strength
among three groups.
2. The degree of microleakage at both occlusal and gingival margin was showed the
lowest in SBMP-Puls group and the highest in ONE-STEP group.
3. At both occlusal and gingival margin, there was significant difference of microleakage
between SBMP-Plus and ONE-STEP/Prime & Bond groups(p<0.05), but no significant
difference of microleakage between ONE-STEP and Prime & Bond group(p>0.05)
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