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Journal of Oral Science & Rehabilitation Issue 01/2016

14 Volume 2 | Issue 1/2016 Journal of Oral Science & Rehabilitation I m pla n t pos ition in g wi thi n e xtracti o n so cke ts Influence of the position of implants placed immediately into extraction sockets: An experimental study in dogs Abstract O bj e cti ve The objective of this studywas to evaluate the influence of implant positioningwithinanextractionsocketonthedepthoftheimplantat the time of surgery and on the buccal supracrestal exposure of the implantsurfaceafterhealing. Mate r i als and me tho ds Eight Labrador dogs were used. Their fourth mandibular premolars were first hemisectioned and the distal roots removed. The distal alveoli were subsequently prepared bilaterally at the apex for im- plant placement. The implants were placed tilted either in contact withthebuccal(buccalposition;B-sites)orthelingual(lingualposi- tion; L-sites) walls of the alveoli. After four months, biopsies were collectedandprocessedforhistomorphometricanalysis. Re su lts The implants were found to be approximately 1 mm deeper at the L-sitesthanattheB-sites.Atthebuccalaspect,averticalresorption of1.6 ± 1.9 mm atthe B-sites and of0.4 ± 0.7 mm atthe L-siteswas observed. The absolute vertical lingual bone resorption was 0.6 ± 0.5 mm and 0.7 ± 0.4 mm at the B- and L-sites, respectively. Thepercentageofbone-to-implantcontactwassimilaratbothsites, as well as buccolingually, and ranged between 31.2% and 35.2%. The width of the buccal bony ridge was larger at the L-sites com- pared with the B-sites. The periimplant mucosa was wider and lo- catedmorecoronallyattheL-sitescomparedwiththeB-sites. Co nclu si o n At implants placed immediately into extraction sockets, smaller buccal exposure above the bone crest occurred when they were placed tilted lingually instead of buccally. The implants placed lin- gually resulted in a deeper position within the extraction socket comparedwiththoseplacedbuccally. Ke y wo rds Animal study, bone healing, extraction socket, defect, implant den- tistry,osseointegration,histology,IPIES. Enzo De Santis,* Luiz A. Salata,† Flávia Priscila Pereira,‡ Sara Ferraris,§ Fabio Pantani,** Giacomo Favero†† & Daniele Botticelli‡‡ * Ariminum Research and Dental Education Center, Ariminum Odontologica, Rimini, Italy † Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil ‡ Faculdade de Odontologia de Araçatuba, Universi- dade Estadual Paulista, Araçatuba, Brazil § Institute of Materials Physics and Engineering, Department of Applied Science and Technology, Politecnico di Torino, Turin, Italy ** Private practice, San Marino, Republic of San Marino †† Faculty of Dentistry, University of Medical Science, Havana, Cuba ‡‡ Ariminum Research and Dental Education Center, Ariminum Odontologica, Rimini, Italy; Faculdade de Odontologia de Araçatuba, Universidade Estadual Paulista, Araçatuba, Brazil; Faculty of Dentistry, University of Medical Science, Havana, Cuba; Programa Odontológico Internacional, Cartagena de Indias, Colombia Corresponding author: Dr. Daniele Botticelli Programa Odontológico Internacional Av. Venezuela CL 35 CR 8B-05 Edificio Citibank Piso 5, Oficina 5G Cartagena de Indias Colombia T & F + 57 5 646 8359 M +57 300 283 5720 daniele.botticelli@gmail.com How to cite this article: De Santis E, Salata LA, Pereira FP, Ferraris S, Pantani F, Favero G, Botticelli D. Influence of the position of implants placed immediately into extraction sockets: An experimental study in dogs. J Oral Science Rehabilitation. 2016 Mar;2(1):14–21. T & F + 5756468359 M +573002835720

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