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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
dentistry
Scanning electron microscopy observations of osseointegration failures of dental implants that support mandibular overdentures
Implant Dentistry, Volume 22, No. 6, Year 2013
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Description
AIM:: Investigating possible failure causes of mandibular implants after their immediate loading with an overdenture retained with bilateral bar attachments, using scanning electron microscope. PATIENTS AND METHODS:: Twenty edentulous male patients were included in the present study. Each patient had 2 fixtures inserted in the canine and the first molar areas on each side of the mandible. After abutments screwing, the 2 fixtures on the same side were splinted with a bar, and immediately loaded with an overdenture. Implants mobility was assessed on weekly basis. Failed implants were removed, and examined by scanning electron microscope. RESULTS:: The failed implants, removed after 4 weeks of treatment, showed an intimate contact of mineralized and osteoid tissues with dense collagen-rich matrix in the apical third of implants. Furthermore, newly developed bone was observed at the same area in implants removed after 7 weeks. However, there was no evidence of such growth at the middle and/or cervical thirds in either case. CONCLUSION:: Lack of osseointegration at the middle and cervical thirds of the root could be a possible cause of implant failure. Early loading by an overdenture retained with bilateral bars is considered a major contributing factor to incomplete osseointegration of the supporting implants. Copyright © 2013 by Lippincott Williams & Wilkins.
Authors & Co-Authors
El-Mekawy, Nesreen Hanm
Egypt, Mansoura
Faculty of Dentistry
Fouad, Mohammed M.
Egypt, Mansoura
Faculty of Dentistry
El-Hawary, Yousry Mahmoud
Egypt, Mansoura
Faculty of Dentistry
Al-Shahat, Mohamed A.
Egypt, Mansoura
Mansoura University
El-Gendy, Reem
United Kingdom, Leeds
University of Leeds
Egypt, Ismailia
Faculty of Dentistry
Statistics
Citations: 5
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1097/01.id.0000433934.99474.75
ISSN:
10566163
Research Areas
Health System And Policy
Participants Gender
Male