Tissue healing in implants immediately placed into postextraction sockets: A pilot study in a mini-pig model

Rimondini, Lia; Bruschi, G B; Scipioni, Agostino; Carrassi, Antonio; Nicoli-Aldini, N.; Giavaresi, Gianluca; Fini, Milena; Mortellaro, Carmen; Giardino, Roberto

doi:10.1016/j.tripleo.2005.05.058

Cited by 28 publications

(25 citation statements)

References 26 publications

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“…Nevertheless, other experimental studies that have compared healing at implants placed in a healed ridge and implants immediately placed in fresh extraction sockets have reported, at 8 months, a larger dimension of the soft tissue barrier in implants placed immediately (Schultes & Gaggl, 2001). Similar results were reported in an experimental study in the minipig model (Rimondini et al 2005). They evaluated the epithelial dimensions after placing implants in fresh extraction sockets in minipigs and reported that the epithelial length was 3.02 mm 30 days after implant installation and then remained stable up to 60 days.…”

Section: G) Immediate Post-extractive Insertionsupporting

confidence: 77%

Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection– a dog model study

Alves

Muñoz

González‐Cantalapiedra

et al. 2014

Clinical Oral Implants Res

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Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection -a dog model study PhD THESIS Célia Coutinho AlvesAutorización do Director / Tutor da Tese (RD 778/1998) RESUMENLa literatura científica parece indicar que la conexión/desconexión del pilar protésico puede provocar alteraciones en la inserción epitelial, causando sangrado y ulceración en el mismo. Esta ruptura mecánica se puede considerar como una herida abierta con la exposición del tejido conjuntivo, lo cual puede resultar en una respuesta inflamatoria y consecuentemente en migración apical epitelial.Esta tesis resume un trabajo de investigación experimental "in vivo" diseñado con el objetivo principal de evaluar histológicamente el comportamiento del tejido óseo marginal, cuando se manipula, repetidamente, el pilar de conexión en implantes "switching-platform" colocados en perros Beagle.El objetivo secundario del estudio fue evaluar el comportamiento marginal de tejido blando tanto histológicamente (anchura bilógica) como clínicamente (cambios en el margen de la encía), y radiográficamente el comportamiento marginal de tejido duro (nivel óseo marginal), variando sólo la estabilidad de la conexión del pilar durante el procedimiento estándar de colocación de implantes Straumann® Bone Level la y su rehabilitación protésica.Se seleccionaron seis perros Beagle adultos fueron seleccionados, y se extrajeron los pre-molares en las posiciones Pm3 y Pm4 del ambos lados izquierdo y derecho, dejando un período de cicatrización de 3 meses. En este momento, se colocaron 24 implantes (BL) (Straumann®, Basilea, Suiza) Ø 3.3 / 8 mm, dos en cada lado y en las regiones Pm3 y Pm4. En uno de los lados (grupo control), se colocaron 12 pilares de cicatrización cónicos Ø 3,6 mm, y en el otro lado (grupo teste) lado, se conectaron 12 pilares multibase Narrow CrossFit TM (NC) (Straumann®, Basilea, Suiza) en el momento de la cirugía de colocación de los implantes. En el grupo test, todos los procedimientos de prótesis se realizaron directamente al pilar multibase pilar sin desconectarlo, y en el grupo control, el pilar multibase se conectó / desconectó cinco veces (en las semanas 6/8/10/12/14) durante los procedimientos protésicos.Posteriormente se confeccionaron 12 puentes fijos metálicos y se atornillaron 14 semanas después de la colocación de los implantes. Una visita de higiene / control fue realizada seis meses después de la colocación de los implantes. Los animales fueran sacrificados a los 9 meses del estudio. Los parámetros clínicos y radiográ-ficos (peri-apicales) se registraron en cada visita. El análisis histométrico se realizó para los 24 implantes. La distancia desde el hombro del pilar multibase al primero contacto del implante con hueso (S-BIC) se definió como variable principal. PhD THESIS Célia Coutinho alves PhD THESIS Célia Coutinho alvesMarginal bone and soft tissue behavior following platform switching abutment connection/ disconnection -a dog model study 16Marginal bone and soft tissue behavior following...

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Section: G) Immediate Post-extractive Insertionsupporting

confidence: 77%

Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection– a dog model study

Alves

Muñoz

González‐Cantalapiedra

et al. 2014

Clinical Oral Implants Res

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“…The study protocol was approved by the [11]. Employing an early implant placement approach 4 weeks after removal of all premolars from each maxillary quadrant, four BEGO Semados RI titanium implants (4.1×10 mm, BEGO Implant Systems, Bremen, Germany) were inserted in each maxillary quadrant in all animals (four per side, eight per animal).…”

Section: Methodsmentioning

confidence: 99%

Analysis of inflammatory periimplant lesions during a 12-week period of undisturbed plaque accumulation—a comparison between flapless and flap surgery in the mini-pig

2011

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This study's aim was to clarify the influence of soft tissue management on the development of periimplant infection. Four weeks after removal of all maxillary premolars in 12 mini-pigs, four BEGO Semados RI implants were inserted in each maxillary quadrant. Employing a split-mouth design, one quadrant was randomized to flapless insertion while the contralateral side was chosen for flap surgery. Following 1, 2, 4 and 12 weeks of transmucosal implant, healing biopsies were retrieved from the periimplant soft tissue and subjected to further analysis. Histomorphometrically, a significant reduction of transmigration of polymorphonuclear neutrophils (week 1, p = 0.007; week 2, p = 0.021; week 4, p = 0.023; week 12, p = 0.013) as well as the density of the subepithelial inflammatory infiltrates (week 1, p = 0.007; week 2, p = 0.046; week 4, p = 0.003; week 12, p = 0.032) was verified following flapless surgery. Quantification of inducible nitric oxide synthase showed significantly reduced expression in the flapless group 2 (p = 0.027), 4 (p = 0.005) and 12 (p = 0.004) weeks post-insertion. Analysis of CD31 and collagen I immunostained sections revealed more regular capillary distribution as well as higher vessel and collagen density in the flapless group. The data of the present study indicate that flapless placement reduces the incidence of inflammatory periimplant soft tissue lesions during a 12-week period. Considering the beneficial effects of flapless placement on early soft tissue healing and stability, the technique might be preferred in case of an uncomplicated locoregional anatomy with sufficient hard and soft tissue. However, this positive effect might disappear after manipulation of the implant and soft tissue during impression taking or try in of the prosthodontic supraconstruction.

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“…L' étude de Aloïse et al [11] conclut le contraire. L' étude de Rimondini et al [12], indique qu'une pénétration bactérienne est possible dès lors que la connexion implant-pièce prothétique laisse paraître un microgap de 10 microns. L'étude de Cabratosa Termes sur les connexions coniques des implants Euroteknika montre qu'aucun microgap n'a pu être décelé à l' échelle du micron et qu'aucun assemblage pilier-pièce prothétique n'a laissé pénétrer de fluide à l'intérieur de la connexion.…”

Section: Biocompatibilité Du Pilier Implantaire [6 7]unclassified

La connexion implant-prothèse

Guillaume¹

2013

Actual. Odonto-Stomatol.

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Le succès de nos traitements implantaires à long terme, d'un point de vue biomécanique et d'un point de vue esthétique, dépend de la qualité de l'acte chirurgical implantaire et de la qualité de la réalisation prothétique. Ce dernier critère dépend de la connexion implantprothèse. L'orientation actuelle se fait vers la connexion interne, plus résistante, plus facile à manipuler, le cône-morse semblant présenter moins de micro-hiatus, moins de micromouvement. La connexion supracrestale limite la cratérisation et respecte l'espace biologique.Le choix du système utilisé doit permettre la maintenance à moyen et long terme, et donc être le plus universel possible. Abstract The long-term success of our implant treatments, from both a biomechanical and an aesthetic point of view, depends on the quality of the implantation surgery and of the prosthetics. The latter criterion depends on the implant-prosthesis connection. The current trend is towards an internal connection, which is more resistant and easier to handle. The Morse taper seems to present less of a micro-gap and less micromovement, because the supracrestal connection limits crater formation and preserves the biological space.The choice of which system to use must ensure medium and long-term maintenance, and so must be as universal as possible.

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Tissue healing in implants immediately placed into postextraction sockets: A pilot study in a mini-pig model

Cited by 28 publications

References 26 publications

Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection– a dog model study

Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection– a dog model study

Analysis of inflammatory periimplant lesions during a 12-week period of undisturbed plaque accumulation—a comparison between flapless and flap surgery in the mini-pig

La connexion implant-prothèse

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