The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是临床治疗后牙稳定性的难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究人后牙段腭弓形态的规律,为临床预成腭杠的制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染透实验和扫描电镜观察对三种牙本质粘结剂粘结离体纵折后牙进行测试，评价其封闭性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是正畸临床治疗后牙稳定性的难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人后牙段腭弓形态的规律,为临床预成腭杠的制作提供础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验电镜观察对三种牙本质粘结剂粘结离体纵折后牙进行微渗漏测试，评价其封闭性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转的复发是正畸临床治疗后稳定性的难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人后段弓形态的规律,为临床杠的制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫描电镜观察对三质粘结剂粘结离体纵折后进行微渗漏测试，评价其封闭性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是正畸临床治疗后牙稳定性的难题。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

究正畸病人后牙段腭弓形态的规律,为临床预成腭杠的制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫描电镜观察对三种牙本质粘结剂粘结离体纵折后牙进行微渗漏测，其封闭性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙复发是正畸临床治疗后牙稳定性之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人后牙段腭弓形态规律,为临床预成腭杠制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫描电镜观察对三种牙本质粘结剂粘结离体纵折后牙进行微渗漏测试，评价性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是正畸临床治疗后牙稳定性的难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人后牙段态的规律,为临床预成杠的制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫描电镜观察对三种牙本质粘结剂粘结离后牙进行微渗漏测试，评价其封闭性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙复发是正畸临床治疗后牙稳难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人后牙段腭弓形态规律,为临床预成腭杠制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫描电镜观察对三种牙本质粘结剂粘结离体纵折后牙进行微渗漏测试，评价其封。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是正畸临床治疗后牙稳定性的难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人后牙段腭弓形态的规律,为临床预成腭杠的制作论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫观察对三种牙本质粘结剂粘结离体纵折后牙进行微渗漏测试，评价其封闭性能。

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是正畸临床牙稳定性的难题之一。

To measure the palatal vault in buccal area,which may be helpful to make preadjustment of palatal bar.

研究正畸病人牙段腭弓形态的规律,为临床预成腭杠的制作提供理论基础。

Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.

通过染渗透实验和扫描电镜观察对三种牙本质粘结剂粘结离体纵折牙进行微渗漏测试，评价其封闭性能。