Abstract
Introduction
The aim of the present study was to evaluate endodontic status and diagnosis of teeth
before extraction and their impact on treatment planning and treatment outcomes of
dental implant therapy.
Methods
Data were retrieved from patient files and radiographs of 596 Swedish individuals
provided with implant therapy. Patients were categorized according to diagnosis in
conjunction with tooth extraction as follows: PERIO (reason for extraction: periodontitis),
CARIES (reason for extraction: caries, apical periodontitis, and/or root fracture),
OTHER (reason for extraction: trauma and other), and MIX (a combination of these).
Details on treatment planning (timing of implant installation and use of prophylactic
antibiotics) and outcomes (early/late implant loss and peri-implantitis) were assessed
from patient records or by clinical examination. Tooth status (endodontically treated:
yes/no; apical lesion: yes/no) and diagnosis category were explored as independent
parameters by logistic regression analyses.
Results
For the majority of patients (64%), tooth extraction was based on a caries or caries-related
diagnosis. Fifty-one percent of all extracted teeth were endodontically treated. Every
third tooth showed radiographic signs of an apical lesion. Immediate implant installation
at such sites was less common. Endodontic status before extraction was not associated
with the use of antibiotics or with treatment outcomes. The diagnosis category MIX
was associated with early implant loss. PERIO was indicative of a higher risk for
peri-implantitis.
Conclusions
Endodontic status before extraction had a limited impact on treatment planning and
was not associated with early/late implant loss or peri-implantitis. Immediate implant
installation after tooth extraction was less commonly performed at sites with apical
lesions.
Key Words
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Article info
Publication history
Published online: March 08, 2019
Identification
Copyright
© 2019 American Association of Endodontists.
