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Novel Implant Design Improves Implant Survival in Multirooted Extraction Sites: A Preclinical Pilot Study
Author(s) -
SivanGildor Adi,
Machtei Eli E.,
Gabay Eran,
Frankenthal Shai,
Levin Liran,
Suzuki Marcelo,
Coelho Paulo G.,
ZigdonGiladi Hadar
Publication year - 2014
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.2014.140042
Subject(s) - implant stability quotient , resonance frequency analysis , implant , medicine , dentistry , radiography , osseointegration , nuclear medicine , orthodontics , surgery
Background: The primary aim is to evaluate clinical, radiographic, and histologic parameters of novel implants with “three roots” design that were inserted into fresh multirooted extraction sockets. A secondary aim is to compare this new implant to standard root‐form dental implants. Methods: Immediate implantation of novel or standard design 6 × 6‐mm implants was performed bilaterally into multirooted sockets in mandibles of mini‐pigs. Twelve weeks later, clinical, radiographic, stability, histomorphometric, and microcomputed tomography (micro‐CT) analyses were performed. Results: Survival rates were significantly higher in the test implants compared with control (92.8% versus 33.3%, respectively; P <0.001). Bone loss was greater in the control compared with the test by sounding (mean 3.42 ± 0.68 versus 1.96 ± 0.34 mm) and radiography (mean 3.35 ± 0.62 versus 2.27 ± 0.33 mm). Histologic and micro‐CT analyses demonstrated bone fill in the inner part of the test implants. Moreover, bone‐to‐implant contact was higher in the test implants (55.50% ± 3.68% versus 42.47% ± 9.89%). Contrary to the clinical, radiographic, and histomorphometric results, resonance frequency analysis measurements were greater in the control group (77.74 ± 3.21 implant stability quotient [ISQ]) compared with the test group (31.09 ± 0.28 ISQ), P = 0.008. Conclusions: The novel design implants resulted in significantly greater survival rate in multirooted extraction sites. Further studies will be required to validate these findings.