Effect of different convergence angles of abutment axial surface on the fracture resistance of GI-Ⅱ all-ceramic crowns;

Laboratory study on abutment displacement of unilateral distal-extension dentures with various cusp inclinations of artificial posterior teeth;

Study on the Maximal Occlusal Force of Abutments before and after Restored with Rigid Fixed Bridge;

Retention,stability,and indices of periodontal health of the abutment teeth were examined after 1 and 6 months.

Methods: Abutment teeth healthily of examined patients status after they had worn RPDs two years with index about the caries, periodontal and oral hygiene habits .

Objective: To observe the clinical therapy effects of loose abutment teeth with the fixed restoration.

Precision of abutment tooth model reconstructed by 3D laser scanner;

Clinical observation on residual root being used for fixed-bridge abutment tooth;

Fabricating an abutment tooth s crown to fit existing removable partial denture;

The clinical application of variant pontic in fixed bridge with tilted abutment without common path of insertion;

Research advancement on the stress analysis and the treatment plans of tilted abutment;

The resultant force of tilted abutment was not axis force ,and medial stress can not be transmitted and disperse through medial teeth, all of which made periodontal tissue stress distribute unevenly and harmed the periodontal tissue.