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OP 74<br />

Title<br />

RADIOGRAPHIC ANALySIS ON PERIIMPLANT bONE SubJECTED TO VARIOuS IMPLANT<br />

PROTOCOLS<br />

Authors<br />

y. HuANG 1 , J. VAN DESSEL 1 , W. zHONG 2 , M. DEPyPERE 3 , N. KOu 2 , G. MA 2 , X. LIANG 2 ,<br />

I. LAMbRICHTS 4 , F. MAES 3 , R. JACObS 1<br />

Affiliations<br />

1 Oral Imaging Center, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium, Leuven,<br />

BELGIUM, 2 School of Stomatology, Dalian Medical University, Dalian, CHINA, 3 ESAT/PSI,<br />

Medical Image Computing, KU Leuven, Leuven, BELGIUM, 4 Department of Morphology, Faculty<br />

of Medicine, University of H<strong>as</strong>selt, Diepenbeek, BELGIUM<br />

Body<br />

Objectives: To compare bone structure parameters at immediate and delayed implant treatment<br />

protocols on CBCT images.<br />

Materials and Methods: Ethical approval w<strong>as</strong> obtained to carry out a split mouth study in 6<br />

mongrel dogs. The 3rd maxillary incisor besides the 3rd and 4th mandibular premolar were extracted.<br />

The dogs randomly received one out of 3 treatment protocols: normal extraction socket<br />

healing (serving <strong>as</strong> control); immediate implant placement and immediate loading (IIP+IL);<br />

delayed implant placement and delayed loading (DIP+DL). Thirty-six alveolar bone biopsies<br />

were scanned using high resolution Cone Beam Computed Tomography (Accuitomo 170 CBCT).<br />

The bone structural parameters were calculated in a 1mm circular-shaped region around the<br />

middle of the implant by CTAn software (SkyScan). The results were analyzed using R software<br />

(v2.8.1).<br />

Results: T<strong>here</strong> were significant differences (p

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