A prospective, controlled clinical trial evaluating the clinical and radiological outcome after 3 years of immediately placed implants in sockets exhibiting periapical pathology.
OBJECTIVE
the aim of the present study was to compare the clinical and radiological outcome of immediately placed implants in sockets with or without periapical pathology 3 years after implant placement.


METHODS
twenty-nine patients with immediate implant placement were clinically and radiologically followed 3 years after implant placement (test group: 16 patients without periapical pathology, control group: 13 patients with periapical pathologies). Clinical (full-mouth bleeding score, full-mouth plaque score, clinical attachment level measurements and width of keratinized mucosa buccaly of the implant) and radiological parameters (vertical distance from the implant shoulder to the first bone-to-implant contact [IS-BIC]) were assessed. Both 95% confidence intervals, as well as results of statistical tests (one-sample, two-sample and paired t-test) were provided.


RESULTS
the implant survival rate was 100% for all 29 implants after 3 years. The clinical and radiological parameters showed no statistically significant difference between the test and the control group at 3 years (two-sample t-test). The IS-BIC was between 1.54 ± 0.88 mm (mesial, test) and 1.69 ± 0.92 mm (distal, test). Between the 1- and 3-year visit the IS-BIC increased in both groups significantly on one side of the implant: 0.30 ± 0.37 mm (mesial, test) and 0.33 ± 0.43 mm (distal, control) (one-sample t-test). None of the 13 examined radiographs of implants immediately placed in sockets with periapical pathologies revealed retrograde peri-implantitis after 3 years.


CONCLUSIONS
it is concluded within the limitations of this study, that after careful debridement of the extraction socket, immediate placement of implants into sites with periapical pathologies can be a successful treatment modality for at least 3 years with no disadvantages in clinical and radiological parameters to immediately placed implants into healthy sockets.
Truninger
Thomas C
TC
Clinic for Fixed & Removable Prosthodontics and Dental Material Science, University of Zürich, Zürich, Switzerland.
Philipp
Alexander O H
AO
Siegenthaler
David W
DW
Roos
Malgorzata
M
Hämmerle
Christoph H F
CH
Jung
Ronald E
RE
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology*; D000075202:Contraindications; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods*; D019232:Dental Restoration Failure; D005500:Follow-Up Studies; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D008875:Middle Aged; D016348:Osseointegration; D057873:Peri-Implantitis / Q000209:etiology; D010485:Periapical Periodontitis / Q000150:complications* / Q000000981:diagnostic imaging; D010512:Periodontal Index; D011446:Prospective Studies; D011859:Radiography; D012390:Root Canal Therapy / Q000009:adverse effects; D018709:Statistics, Nonparametric; D013997:Time Factors; D020390:Tooth Socket / Q000601:surgery*; D016896:Treatment Outcome