Restoration of single posterior tooth anodontia accompanied tilted distal abutment with resin bonded fixed partial denture / 解放军医学杂志

ABSTRACT

Objective To evaluate the restorative effects of customarily designed resin bonded fixed partial denture(RBFPD) on single posterior tooth anodontia accompanied by tilted distal abutment,and summarize the indications and characteristics of RBFPD.Methods From 2002 to 2003,18 outpatients with single posterior tooth anodontia accompanied by tilted distal abutment were selected for the present study in the Department of Stomatology,General Hospital of People's Liberation Army.The gradient of tilted abutment was less than 50?.All the teeth with abutments were vital without obvious loosening or abnormal periodontal condition.The position and configuration of occlusion rest and retainer of denture were designed according to the inclination of abutment and cast survey.Titanium alloy or cobalt-chromium porcelain fused to metal RBFPD was prescribed,and all patients were followed up for 5 years.The clinical and X-ray examination were performed at each revisit and the subjective experience of patients was inquired.Results The average gradient of tilted distal abutment was 33?.During the period of 5-year follow-up,in all the 18 patients but 2,all the dentures were in function without detachment.The gum of abutment and the bottom of the pontic were in good condition,and no periodontitis in abutment was observed.There was no obvious change of abutment examined by X-ray during the period of follow-up.The patients were satisfactory with the prosthesis,and the success rate was 88.9% during the period of 5-year follow-up.Conclusion RBFDP used to restore the posterior single tooth anodontia with tilted abutment has the merit of less tooth reduction and reliable clinical effects,and root canal therapy is not necessary for tilted abutment.