title: Different configuration of socket shield technique in peri-implant bone preservation: An experimental study in dog mandible.
abstract: The aim of this study was to evaluate the influence of the residual root and peri implant bone dimensions on the clinical success of the socket shield technique. Thirty-six dental implants were installed in 6 dogs. The clinical crowns of teeth P3, P4 and M1 were beheaded. Afterwards, the roots were worn down 2-3mm in apical direction until they were located at crestal level. Posterior implant beds were prepared in the center of the roots passing by 3mm apically forming 6 groups in accordance to the remaining root thickness. Radiography of the crestal bone level was performed on day 0 and after 12 weeks. Histomorphometric analyses of the specimens were carried out to measure the crestal bone level, the bone to implant contact and the buccal and lingual bone thickness at the implant shoulder portion. Correlations between groups were analyzed through nonparametric Friedman test, statistical significance was set as p<0.05. All 36 implants were osseointegrated, but 3 samples showed a clinical inflammatory reaction and some radicular fragments presented a small resorption process. On the buccal and lingual side, the radicular fragment was attached to the buccal bone plate by a physiologic periodontal ligament. In the areas where there was space between the implant and the fragment, newly formed bone was demonstrated directly on the implant surface. Within the limitations of an animal pilot study, root-T belt technique may be beneficial in preserving and protecting the bundle bone and preservation of soft tissues. If the thickness of the buccal bone is 3mm, and the thickness of the remaining root fragment is 2mm, the socket shield technique is more predictable and the bone contours can be maintained.
authors: International Dentistry Research Cathedra, Faculty of Medicine & Dentistry, San Antonio Catholic University of Murcia (UCAM), Murcia, Spain.
authors: José Luis
authors: JL
authors: Calvo-Guirado
authors: Implant Dentistry, University of Buenos Aires, Argentina.
authors: Miguel
authors: M
authors: Troiano
authors: International Dentistry Research Cathedra, Faculty of Medicine, San Antonio Catholic University of Murcia (UCAM), Murcia, Spain.
authors: P J
authors: PJ
authors: López-López
authors: International Dentistry Research Cathedra, Faculty of Medicine, San Antonio Catholic University of Murcia (UCAM), Murcia, Spain.
authors: María Piedad
authors: MP
authors: Ramírez-Fernandez
authors: International Research Cathedra, UCAM, Universidad Católica San Antonio, Murcia, Spain.
authors: José Eduardo Maté Sánchez
authors: JEMS
authors: de Val
authors: Faculty of Medicine and Dentistry, UCAM, Universidad Católica San Antonio, Murcia, Spain.
authors: Jose Manuel Granero
authors: JMG
authors: Marin
authors: Biotecnos Research Center, Santa Maria, Brazil; Biotechnology Cathedra of the University Catholica San Antonio de Murcia (UCAM), Murcia, Spain. Electronic address: sergio.gehrke@hotmail.com.
authors: Sergio Alexandre
authors: SA
authors: Gehrke
mesh_terms: D000818:Animals; D000069343:Bone-Implant Interface / Q000033:anatomy & histology; D019250:Dental Implants, Single-Tooth; D004285:Dogs; D057893:Immediate Dental Implant Loading / Q000295:instrumentation / Q000379:methods; D058958:Organs at Risk / Q000033:anatomy & histology; D011176:Post and Core Technique / Q000295:instrumentation*; D014081:Tooth Extraction / Q000295:instrumentation* / Q000379:methods; D014092:Tooth Root / Q000166:cytology* / Q000601:surgery*; D020390:Tooth Socket / Q000166:cytology* / Q000601:surgery*; D016896:Treatment Outcome
keywords: Alveolar bone preservation; Crestal bone behavior; Immediate implant; Radicular retention; Socket shield