日本語AIでPubMedを検索
象牙質接着性能に及ぼす修復システムの影響
Effect of repair systems on dentin bonding performance.
PMID: 33775983
抄録
本研究の目的は,リン酸エッチング,メタルプライマーまたはシランカップリング剤の塗布が,2段階セルフエッチアドヒーシブシステムの象牙質接着性能に及ぼす影響を検討することである.ヒト象牙質表面を準備し,前処理方法によって,前処理なし(Clearfil SE Bond 2,CONTROL),40%リン酸(K-Etchant GEL,K),金属プライマー(Alloy Primer,AP),シランカップリング剤(Porcelain Bond Activator,PB)の4群に分け,前処理方法を検討した.試験片を梁に切断し,サーモサイクル処理なしとサーモサイクル処理の2つのサブグループ(n=20)に分け,μTBS試験と酸塩基チャレンジを行い,SEM観察を行った。K群とAP群,PB群とCONTROL群,PB群とTC群との間で,統計的に低い結果が得られた(p<0.05).象牙質-接着界面のSEM像から,すべての群で耐酸性領域(ABRZ)が生じ,K群ではABRZの下に漏斗状の侵食が認められた.
The purpose of this study was to investigate the influence of phosphoric acid etching, metal primer or silane coupling agent application on dentin bonding performance of a 2-step self-etch adhesive system. Human dentin surfaces were prepared and divided into four groups depending on the pre-treatment method: no pretreatment (Clearfil SE Bond 2, CONTROL); 40% phosphoric acid (K-Etchant GEL, K); metal primer (Alloy Primer, AP); or silane coupling agent (Porcelain Bond Activator, PB). The specimens were sectioned into beams, separated into 2 subgroups (n=20): no thermocyling or thermocycled (TC), and subjected to a µTBS test and an acid-base challenge for SEM observation. Statistically lower results were observed between K and AP groups, PB and CONTROL, and PB with/without TC (p<0.05). SEM images at the dentin-adhesive interface revealed that all groups produced an acid-base resistant zone (ABRZ), with a funnel-shaped erosion under the ABRZ for the K group.