THE EFFECT OF ANTERIOR-POSTERIOR SPREAD AND CANTILEVER LENGTH ON THE SUPPORTING STRUCTURES OF MAXILLARY SCREW RETAINED PROSTHESIS
Khorshid, H., Sheta, N. (2017). THE EFFECT OF ANTERIOR-POSTERIOR SPREAD AND CANTILEVER LENGTH ON THE SUPPORTING STRUCTURES OF MAXILLARY SCREW RETAINED PROSTHESIS. EKB Journal Management System, 63(Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), 1955-1964. doi: 10.21608/edj.2017.75174
Heba E. Khorshid; Nora M. Sheta. "THE EFFECT OF ANTERIOR-POSTERIOR SPREAD AND CANTILEVER LENGTH ON THE SUPPORTING STRUCTURES OF MAXILLARY SCREW RETAINED PROSTHESIS". EKB Journal Management System, 63, Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), 2017, 1955-1964. doi: 10.21608/edj.2017.75174
Khorshid, H., Sheta, N. (2017). 'THE EFFECT OF ANTERIOR-POSTERIOR SPREAD AND CANTILEVER LENGTH ON THE SUPPORTING STRUCTURES OF MAXILLARY SCREW RETAINED PROSTHESIS', EKB Journal Management System, 63(Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), pp. 1955-1964. doi: 10.21608/edj.2017.75174
Khorshid, H., Sheta, N. THE EFFECT OF ANTERIOR-POSTERIOR SPREAD AND CANTILEVER LENGTH ON THE SUPPORTING STRUCTURES OF MAXILLARY SCREW RETAINED PROSTHESIS. EKB Journal Management System, 2017; 63(Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)): 1955-1964. doi: 10.21608/edj.2017.75174

THE EFFECT OF ANTERIOR-POSTERIOR SPREAD AND CANTILEVER LENGTH ON THE SUPPORTING STRUCTURES OF MAXILLARY SCREW RETAINED PROSTHESIS

Egyptian Dental Journal
Article 36, Volume 63, Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), April 2017, Page 1955-1964  XML PDF (1.52 MB)
Document Type: Original Article
DOI: 10.21608/edj.2017.75174
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Authors
Heba E. Khorshid; Nora M. Sheta
Lecturer, Department of Prosthodontics, Faculty of Oral and Dental Medicine, Cairo University.
Abstract
Purpose: The Target of this work was to study the effect of three different ratios of anterior-posterior spread to the cantilever length on the supporting structures of implant- screw retained maxillary prosthesis ;
Materials and Methods: In this study, maxillary implant screw retained prostheses were placed in fifteen completely edentulous patients. Each patient received six implants in the maxilla. Patients were divided into three equal groups; Group I, II & III according to the ratio of anterior-posterior implant spread to the cantilevers lengths (CL/ AP). The / CL AP ratio was 1:1, 1:2 and 1:3 in the three groups respectively. In this Study, crestal bone height changes around each implant were evaluated at time of prostheses insertion, four, eight and twenty-four months later using CBCT.
Results: The results of this study revealed that the least bone height loss was noticed in
Group III. Statistically significant difference was reported between Groups I, II& III in bone height loss.
Conclusion: Within the limitation of this study, it might be concluded that the cantilever extension to antero-posterior implant spread with 1:3 ratio might have induced the least crestal bone height loss around each implant in maxillary screw retained prostheses.
Keywords
edentulous maxillae; screw retained restorations; anterio-posterior spread; cantilever length
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