Document Detail

Do angulated implants increase the amount of bone loss around implants in the anterior maxilla?
MedLine Citation:
PMID:  23351760     Owner:  NLM     Status:  In-Data-Review    
PURPOSE: The aim of this study was to evaluate the relation between angulated implants and the bone loss around implants in the anterior maxilla.
MATERIALS AND METHODS: The subjects studied had a missing tooth in the anterior maxilla and a bone deficiency that required restoration with an angulated dental implant. After mounting the casts on the articulator, the amount of direction was measured with a facebow by calculating the difference between the mean buccopalatal angulation of the 2 adjacent natural teeth and the buccopalatal angulation of the implant abutment to the occlusal plane. Radiography was performed in each patient immediately after loading and repeated a minimum of 36 months after loading.
RESULTS: Fifty-eight subjects who received delayed-loading angulated implants were studied. The results showed that the mean implant angulation was 15.2° and the mean bone resorption was 0.87 mm. Analysis of the data showed a significant correlation between implant follow-up time and bone loss. No correlation was seen between the implant angulation and bone loss. An assessment of predictive factors showed a relation between the implant type and bone loss. The follow-up time had a significant effect on bone loss. The implant angulation did not change bone resorption on the mesial and distal surfaces of the implants.
CONCLUSIONS: The angulation of implants was not associated with an increased risk for bone loss, and angulated implants may be a satisfactory alternative to vertical implants to avoid grafting procedures. The type of implant may be an important factor that affects bone resorption, although follow-up time was the strongest predictive factor.
Reza Tabrizi; Freydoun Pourdanesh; Samira Zare; Hosein Daneste; Nasim Zeini
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons     Volume:  71     ISSN:  1531-5053     ISO Abbreviation:  J. Oral Maxillofac. Surg.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8206428     Medline TA:  J Oral Maxillofac Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  272-7     Citation Subset:  AIM; D; IM    
Copyright Information:
Copyright © 2013 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
Assistant Professor, Department of Maxillofacial Surgery, Shiraz University of Medical Science, Shiraz, Iran. Electronic address:
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