ABSTRACT
<p><b>OBJECTIVE</b>This study aimed to evaluate the success and survival rate of endodontically treated premolars restored by ceramic onlays by comparing restored by quartz fiber posts and metal ceramic crowns.</p><p><b>METHODS</b>Ninety-four patients with 126 endodontically treated premolars were enrolled in this study and divided into 4 groups according to the remaining axial walls and restorative methods. The observation time was 36 months. The success and survival rates of the restorations, as well as causes of failures, were analyzed.</p><p><b>RESULTS</b>At the final follow-up, the success and survival rates of the mild defect endodontically treated premolars were restored by quartz fiber posts and the crowns were at 96.3% and 98.1%; the success and survival rates of the severe defect premolars restored by quartz fiber posts and crowns were at 88.5% and 96.2%. The success and survival rates of the mild defect premolars restored by cast ceramic onlays were both at 96.6%, the success and survival rates of the severe defect premolars restored by cast ceramic onlays were at 94.1% and 100%, respectively. The success and survival rates of the different groups were no significant difference (P>0.05).</p><p><b>CONCLUSION</b>Based on the results and within the limits of this study, cast ceramic onlays is a very reliable method to restore endodontically treated premolars.</p>
Subject(s)
Humans , Bicuspid , Ceramics , Crowns , Inlays , Post and Core Technique , Retrospective Studies , Tooth, NonvitalABSTRACT
<p><b>OBJECTIVE</b>To evaluate the adjunctive effect of diode laser irradiation for the treatment of periodontal-endodontic combined lesions.</p><p><b>METHODS</b>30 cases with periodontal-endodontic combined lesions were selected. All cases were randomly divided into experimental group and control group (n=15). In the control group, patients were treated with root canal therapy and conservative periodontal treatment (scaling and root planning), and patients in the experimental group were treated with root canal therapy and conservative periodontal treatment followed by diode laser irradiation. Clinical measurements including pocket probing depth (PPD), clinical attachment level (CAL), modified bleeding index (mBI), periapical index (PAI) were taken before treatment (baseline). Three and six months after the treatment, the adjunctive effects of diode laser in the treatment of periodontal-endodontic combined lesions were evaluated.</p><p><b>RESULTS</b>Three months after the treatment, the average PPD, CAL and mBI levels were reduced significantly in both groups. But the average PPD reduction in the experimental group was significantly greater (P<0.05) than in control group. However the average CAL and mBI reduction were not significantly different between two groups. Six months after the treatment, the average PPD, CAL and mBI levels were further reduced in the experiment group, but not in the control group. The average PAI levels were reduced significantly in both groups, but the PAI reduction was not significantly different between two groups.</p><p><b>CONCLUSION</b>The use of diode laser as an adjunct procedure in the treatment of periodontal-endodontic combined lesions can aid in achieving success.</p>