The effect of abutment dis/reconnections on peri-implant bone resorption: A radiologic study of platform-switched and non-platform-switched implants placed in animals

Objectives: The purpose of this animal study was to radiologically measure the influence of abutment disconnection on bone resorption and to compare this influence on platform‐switched vs. non‐platform‐switched implants. Methods: The study design included extraction of all mandibular premolars in fi...

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Bibliographic Details
Published in:Clinical oral implants research 2013-03, Vol.24 (3), p.305-311
Main Authors: Rodríguez, Xavier, Vela, Xavier, Méndez, Víctor, Segalà, Maribel, Calvo-Guirado, Jose L., Tarnow, Dennis P.
Format: Article
Language:English
Subjects:
abutment
Alveolar Bone Loss - diagnostic imaging
Animals
Bicuspid
Bone healing
bone resorption
Dental Abutments
Dental Implantation, Endosseous - methods
Dental Implants
Dental Prosthesis Design
Dentistry
design
disconnection
Dogs
Mandible - diagnostic imaging
Mandible - surgery
platform switching
Radiography
reconnection
Tooth Extraction
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Summary:Objectives: The purpose of this animal study was to radiologically measure the influence of abutment disconnection on bone resorption and to compare this influence on platform‐switched vs. non‐platform‐switched implants. Methods: The study design included extraction of all mandibular premolars in five canines . After 2 months, six implants were placed in each dog. Four of them were platform‐switched (PS) implants and two were non‐platform‐switched (NPS) implants. Some or all of the abutments connected to the implants were disconnected at pre‐ordained post‐surgical intervals. Radiographs were taken at the time of implant placement and at every handling. The values for mesial (horizontal and vertical) and distal (horizontal and vertical) bone resorption were taken and compared for each implant at every abutment dis/reconnection. Results: The average vertical bone resorption around NPS implants after four dis/reconnections was 1.09 mm (SD 0.25 mm), and the average horizontal bone resorption was 0.98 mm (SD 0.27 mm). The average vertical bone resorption around PS implants after four dis/reconnections was 0.24 mm, (SD 0.08 mm) and the average horizontal bone resorption was 0.24 mm (SD 0.13 mm). The difference of the average horizontal and vertical bone resorption around NPS (site D) and PS (site A) implants was statically significant (P 
ISSN:0905-7161
1600-0501
DOI:10.1111/j.1600-0501.2011.02317.x